Update Files

.editorconfig

@@ -0,0 +1,11 @@
+root = true
+
+[*]
+charset = utf-8
+tab_width = 4
+indent_style = tab
+
+[*.py]
+indent_size = 4
+tab_width = 4
+indent_style = space

.vscode/settings.json

@@ -0,0 +1,8 @@
+{
+	"editor.detectIndentation": false,
+	"editor.tabSize": 4,
+	"editor.insertSpaces": false,
+	"[python]": {
+		"editor.insertSpaces": true
+	}
+}

Kha/.clang-format

@@ -0,0 +1,79 @@
+Language:        Cpp
+BasedOnStyle:  LLVM
+AccessModifierOffset: -4
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlinesLeft: false
+AlignOperands:   true
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: true
+AllowShortLoopsOnASingleLine: true
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: false
+BinPackArguments: true
+BinPackParameters: true
+BraceWrapping:   
+  AfterClass:      false
+  AfterControlStatement: false
+  AfterEnum:       false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  BeforeCatch:     false
+  BeforeElse:      true
+  IndentBraces:    false
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Custom
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+ColumnLimit:     160
+CommentPragmas:  '^ IWYU pragma:'
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DerivePointerAlignment: false
+DisableFormat:   false
+FixNamespaceComments: false
+IndentCaseLabels: false
+IndentWidth:     4
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: true
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: All
+ObjCBlockIndentWidth: 4
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: true
+PenaltyBreakBeforeFirstCallParameter: 19
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 60
+PointerAlignment: Right
+ReflowComments:  true
+SortIncludes:    true
+SpaceAfterCStyleCast: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Cpp03
+TabWidth:        4
+UseTab:          ForIndentation

Kha/.vscode/settings.json

@@ -0,0 +1,6 @@
+{
+	"[haxe]": {
+		"editor.formatOnSave": true,
+		"editor.formatOnPaste": false
+	},
+}

Kha/Backends/Empty/kha/Blob.hx

@@ -0,0 +1,3 @@
+package kha;
+
+typedef Blob = kha.internal.BytesBlob;

Kha/Backends/Empty/kha/Display.hx

@@ -0,0 +1,75 @@
+package kha;
+
+class Display {
+	static var instance: Display = new Display();
+
+	function new() {}
+
+	public static function init(): Void {}
+
+	public static var primary(get, never): Display;
+
+	static function get_primary(): Display {
+		return instance;
+	}
+
+	public static var all(get, never): Array<Display>;
+
+	static function get_all(): Array<Display> {
+		return [primary];
+	}
+
+	public var available(get, never): Bool;
+
+	function get_available(): Bool {
+		return true;
+	}
+
+	public var name(get, never): String;
+
+	function get_name(): String {
+		return "Display";
+	}
+
+	public var x(get, never): Int;
+
+	function get_x(): Int {
+		return 0;
+	}
+
+	public var y(get, never): Int;
+
+	function get_y(): Int {
+		return 0;
+	}
+
+	public var width(get, never): Int;
+
+	function get_width(): Int {
+		return 1920;
+	}
+
+	public var height(get, never): Int;
+
+	function get_height(): Int {
+		return 1080;
+	}
+
+	public var frequency(get, never): Int;
+
+	function get_frequency(): Int {
+		return 60;
+	}
+
+	public var pixelsPerInch(get, never): Int;
+
+	function get_pixelsPerInch(): Int {
+		return 96;
+	}
+
+	public var modes(get, never): Array<DisplayMode>;
+
+	function get_modes(): Array<DisplayMode> {
+		return [];
+	}
+}

Kha/Backends/Empty/kha/DisplayImpl.hx

@@ -0,0 +1,27 @@
+package kha;
+
+class DisplayImpl {
+	public static function count(): Int {
+		return 1;
+	}
+
+	public static function width(index: Int): Int {
+		return -1;
+	}
+
+	public static function height(index: Int): Int {
+		return -1;
+	}
+
+	public static function x(index: Int): Int {
+		return -1;
+	}
+
+	public static function y(index: Int): Int {
+		return -1;
+	}
+
+	public static function isPrimary(index: Int): Bool {
+		return true;
+	}
+}

Kha/Backends/Empty/kha/EnvironmentVariables.hx

@@ -0,0 +1,7 @@
+package kha;
+
+class EnvironmentVariables {
+	public static function get(name: String): String {
+		return null;
+	}
+}

Kha/Backends/Empty/kha/Font.hx

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+package kha;
+
+typedef Font = kha.Kravur;

Kha/Backends/Empty/kha/Image.hx

@@ -0,0 +1,173 @@
+package kha;
+
+import haxe.io.Bytes;
+import kha.graphics4.DepthStencilFormat;
+import kha.graphics4.TextureFormat;
+import kha.graphics4.Usage;
+
+class Image implements Canvas implements Resource {
+	public static function create(width: Int, height: Int, format: TextureFormat = null, usage: Usage = null): Image {
+		return null;
+	}
+
+	public static function create3D(width: Int, height: Int, depth: Int, format: TextureFormat = null, usage: Usage = null): Image {
+		return null;
+	}
+
+	public static function createRenderTarget(width: Int, height: Int, format: TextureFormat = null,
+			depthStencil: DepthStencilFormat = DepthStencilFormat.NoDepthAndStencil, antiAliasingSamples: Int = 1): Image {
+		return null;
+	}
+
+	public static function fromBytes(bytes: Bytes, width: Int, height: Int, format: TextureFormat = null, usage: Usage = null): Image {
+		return null;
+	}
+
+	public static function fromBytes3D(bytes: Bytes, width: Int, height: Int, depth: Int, format: TextureFormat = null, usage: Usage = null): Image {
+		return null;
+	}
+
+	public static var maxSize(get, never): Int;
+
+	static function get_maxSize(): Int {
+		return 0;
+	}
+
+	public static var nonPow2Supported(get, never): Bool;
+
+	static function get_nonPow2Supported(): Bool {
+		return false;
+	}
+
+	public static function renderTargetsInvertedY(): Bool {
+		return false;
+	}
+
+	public function isOpaque(x: Int, y: Int): Bool {
+		return false;
+	}
+
+	/**
+	 * Returns the color of a pixel identified by its x/y-coordinates. This only works for images for which
+	 * the readable flag is set to true because by default images only exist in video-memory. To load images
+	 * which are readable use a line ala project.addAssets('Assets/image.png', { readable: true }); in
+	 * your khafile.
+	 * For reading the content of render-targets use getPixels() instead.
+	 */
+	public function at(x: Int, y: Int): Color {
+		return Color.Black;
+	}
+
+	public function unload(): Void {}
+
+	/**
+	 * Returns a writable Bytes object. Once unlock() is called the content of the Bytes object
+	 * is written into the image.
+	 * This can not be used to read the current content of an image - for this use at() or getPixels() instead.
+	 */
+	public function lock(level: Int = 0): Bytes {
+		return null;
+	}
+
+	public function unlock(): Void {}
+
+	/**
+	 * Returns the content of an image. This only works if the image is a render-target and it is very slow
+	 * because data will be copied from video-memory to main-memory. This is useful for making screenshots
+	 * but please avoid using it for regular rendering.
+	 * For reading the content of images which are not render-targets use at() instead.
+	 */
+	public function getPixels(): Bytes {
+		return null;
+	}
+
+	public function generateMipmaps(levels: Int): Void {}
+
+	public function setMipmaps(mipmaps: Array<Image>): Void {}
+
+	public function setDepthStencilFrom(image: Image): Void {}
+
+	public function clear(x: Int, y: Int, z: Int, width: Int, height: Int, depth: Int, color: Color): Void {}
+
+	/**
+	 * Returns the original width of the image.
+	 */
+	public var width(get, never): Int;
+
+	function get_width(): Int {
+		return 0;
+	}
+
+	/**
+	 * Returns the original height of the image.
+	 */
+	public var height(get, never): Int;
+
+	function get_height(): Int {
+		return 0;
+	}
+
+	public var depth(get, never): Int;
+
+	function get_depth(): Int {
+		return 1;
+	}
+
+	public var format(get, never): TextureFormat;
+
+	function get_format(): TextureFormat {
+		return TextureFormat.RGBA32;
+	}
+
+	/**
+	 * Very old GPUs only supported power of two texture-widths.
+	 * When an Image is created on such a GPU, Kha automatically increases
+	 * its size to a power of two and realWidth returns this new, internal
+	 * size. Knowing the real size is important for calculating
+	 * texture-coordinates correctly but all of this is irrelevant unless
+	 * you really want to support very very old GPUs.
+	 */
+	public var realWidth(get, never): Int;
+
+	function get_realWidth(): Int {
+		return 0;
+	}
+
+	/**
+	 * Very old GPUs only supported power of two texture-heights.
+	 * When an Image is created on such a GPU, Kha automatically increases
+	 * its size to a power of two and realHeight returns this new, internal
+	 * size. Knowing the real size is important for calculating
+	 * texture-coordinates correctly but all of this is irrelevant unless
+	 * you really want to support very very old GPUs.
+	 */
+	public var realHeight(get, never): Int;
+
+	function get_realHeight(): Int {
+		return 0;
+	}
+
+	public var stride(get, never): Int;
+
+	function get_stride(): Int {
+		return 0;
+	}
+
+	public var g1(get, never): kha.graphics1.Graphics;
+
+	function get_g1(): kha.graphics1.Graphics {
+		return null;
+	}
+
+	public var g2(get, never): kha.graphics2.Graphics;
+
+	function get_g2(): kha.graphics2.Graphics {
+		return null;
+	}
+
+	public var g4(get, never): kha.graphics4.Graphics;
+
+	function get_g4(): kha.graphics4.Graphics {
+		return null;
+	}
+}

Kha/Backends/Empty/kha/LoaderImpl.hx

@@ -0,0 +1,31 @@
+package kha;
+
+import kha.FontStyle;
+import kha.Blob;
+import kha.Kravur;
+import haxe.io.Bytes;
+import haxe.io.BytesData;
+
+class LoaderImpl {
+	public static function getImageFormats(): Array<String> {
+		return ["png", "jpg"];
+	}
+
+	public static function loadImageFromDescription(desc: Dynamic, done: kha.Image->Void, failed: AssetError->Void) {}
+
+	public static function getSoundFormats(): Array<String> {
+		return ["mp4", "ogg"];
+	}
+
+	public static function loadSoundFromDescription(desc: Dynamic, done: kha.Sound->Void, failed: AssetError->Void) {}
+
+	public static function getVideoFormats(): Array<String> {
+		return ["mp4", "webm"];
+	}
+
+	public static function loadVideoFromDescription(desc: Dynamic, done: kha.Video->Void, failed: AssetError->Void): Void {}
+
+	public static function loadBlobFromDescription(desc: Dynamic, done: Blob->Void, failed: AssetError->Void) {}
+
+	public static function loadFontFromDescription(desc: Dynamic, done: Font->Void, failed: AssetError->Void): Void {}
+}

Kha/Backends/Empty/kha/Storage.hx

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+package kha;
+
+import haxe.io.Bytes;
+import haxe.io.BytesBuffer;
+import haxe.io.BytesData;
+
+class Storage {
+	public static function namedFile(name: String): StorageFile {
+		return null;
+	}
+
+	public static function defaultFile(): StorageFile {
+		return namedFile("default.kha");
+	}
+}

Kha/Backends/Empty/kha/SystemImpl.hx

@@ -0,0 +1,139 @@
+package kha;
+
+import kha.graphics4.TextureFormat;
+import kha.input.Gamepad;
+import kha.input.Keyboard;
+import kha.input.Mouse;
+import kha.input.MouseImpl;
+import kha.input.Surface;
+import kha.System;
+
+class SystemImpl {
+	public static function init(options: SystemOptions, callback: Window->Void): Void {}
+
+	public static function getScreenRotation(): ScreenRotation {
+		return ScreenRotation.RotationNone;
+	}
+
+	public static function getTime(): Float {
+		return 0;
+	}
+
+	public static function windowWidth(id: Int): Int {
+		return 640;
+	}
+
+	public static function windowHeight(id: Int): Int {
+		return 480;
+	}
+
+	public static function screenDpi(): Int {
+		return 96;
+	}
+
+	public static function getVsync(): Bool {
+		return true;
+	}
+
+	public static function getRefreshRate(): Int {
+		return 60;
+	}
+
+	public static function getSystemId(): String {
+		return "Empty";
+	}
+
+	public static function vibrate(ms: Int): Void {}
+
+	public static function getLanguage(): String {
+		return "en";
+	}
+
+	public static function requestShutdown(): Bool {
+		return true;
+	}
+
+	public static function getMouse(num: Int): Mouse {
+		return null;
+	}
+
+	public static function getKeyboard(num: Int): Keyboard {
+		return null;
+	}
+
+	public static function lockMouse(): Void {}
+
+	public static function unlockMouse(): Void {}
+
+	public static function canLockMouse(): Bool {
+		return false;
+	}
+
+	public static function isMouseLocked(): Bool {
+		return false;
+	}
+
+	public static function notifyOfMouseLockChange(func: Void->Void, error: Void->Void): Void {}
+
+	public static function removeFromMouseLockChange(func: Void->Void, error: Void->Void): Void {}
+
+	static function unload(): Void {}
+
+	public static function canSwitchFullscreen(): Bool {
+		return false;
+	}
+
+	public static function isFullscreen(): Bool {
+		return false;
+	}
+
+	public static function requestFullscreen(): Void {}
+
+	public static function exitFullscreen(): Void {}
+
+	public static function notifyOfFullscreenChange(func: Void->Void, error: Void->Void): Void {}
+
+	public static function removeFromFullscreenChange(func: Void->Void, error: Void->Void): Void {}
+
+	public static function changeResolution(width: Int, height: Int): Void {}
+
+	public static function setKeepScreenOn(on: Bool): Void {}
+
+	public static function loadUrl(url: String): Void {}
+
+	public static function getGamepadId(index: Int): String {
+		return "unknown";
+	}
+
+	public static function getGamepadVendor(index: Int): String {
+		return "unknown";
+	}
+
+	public static function setGamepadRumble(index: Int, leftAmount: Float, rightAmount: Float) {}
+
+	public static function getPen(num: Int): kha.input.Pen {
+		return null;
+	}
+
+	public static function safeZone(): Float {
+		return 1.0;
+	}
+
+	public static function login(): Void {}
+
+	public static function automaticSafeZone(): Bool {
+		return true;
+	}
+
+	public static function setSafeZone(value: Float): Void {}
+
+	public static function unlockAchievement(id: Int): Void {}
+
+	public static function waitingForLogin(): Bool {
+		return false;
+	}
+
+	public static function disallowUserChange(): Void {}
+
+	public static function allowUserChange(): Void {}
+}

Kha/Backends/Empty/kha/Window.hx

@@ -0,0 +1,134 @@
+package kha;
+
+class Window {
+	static var windows: Array<Window> = [];
+
+	var defaultWidth: Int;
+	var defaultHeight: Int;
+
+	@:noCompletion
+	@:noDoc
+	public function new(defaultWidth: Int, defaultHeight: Int) {
+		windows.push(this);
+	}
+
+	public static function create(win: WindowOptions = null, frame: FramebufferOptions = null): Window {
+		return null;
+	}
+
+	public static function destroy(window: Window): Void {}
+
+	public static function get(index: Int): Window {
+		return windows[index];
+	}
+
+	public static var all(get, never): Array<Window>;
+
+	static function get_all(): Array<Window> {
+		return windows;
+	}
+
+	public function resize(width: Int, height: Int): Void {}
+
+	public function move(x: Int, y: Int): Void {}
+
+	public function changeWindowFeatures(features: Int): Void {}
+
+	public function changeFramebuffer(frame: FramebufferOptions): Void {}
+
+	public var x(get, set): Int;
+
+	function get_x(): Int {
+		return 0;
+	}
+
+	function set_x(value: Int): Int {
+		return 0;
+	}
+
+	public var y(get, set): Int;
+
+	function get_y(): Int {
+		return 0;
+	}
+
+	function set_y(value: Int): Int {
+		return 0;
+	}
+
+	public var width(get, set): Int;
+
+	function get_width(): Int {
+		return 800;
+	}
+
+	function set_width(value: Int): Int {
+		return 800;
+	}
+
+	public var height(get, set): Int;
+
+	function get_height(): Int {
+		return 600;
+	}
+
+	function set_height(value: Int): Int {
+		return 600;
+	}
+
+	public var mode(get, set): WindowMode;
+
+	function get_mode(): WindowMode {
+		return Windowed;
+	}
+
+	function set_mode(mode: WindowMode): WindowMode {
+		if (mode == Fullscreen || mode == ExclusiveFullscreen) {
+			if (!isFullscreen()) {
+				requestFullscreen();
+			}
+		}
+		else {
+			if (isFullscreen()) {
+				exitFullscreen();
+			}
+		}
+		return mode;
+	}
+
+	function isFullscreen(): Bool {
+		return false;
+	}
+
+	function requestFullscreen(): Void {}
+
+	function exitFullscreen(): Void {}
+
+	public var visible(get, set): Bool;
+
+	function get_visible(): Bool {
+		return true;
+	}
+
+	function set_visible(value: Bool): Bool {
+		return true;
+	}
+
+	public var title(get, set): String;
+
+	function get_title(): String {
+		return "Kha";
+	}
+
+	function set_title(value: String): String {
+		return "Kha";
+	}
+
+	public function notifyOnResize(callback: Int->Int->Void): Void {}
+
+	public var vSynced(get, never): Bool;
+
+	function get_vSynced(): Bool {
+		return true;
+	}
+}

Kha/Backends/Empty/kha/arrays/ByteArray.hx

@@ -0,0 +1,153 @@
+package kha.arrays;
+
+import kha.FastFloat;
+
+class ByteArray {
+	public var buffer(get, never): ByteBuffer;
+
+	inline function get_buffer(): ByteBuffer {
+		return null;
+	}
+
+	public function new(buffer: ByteBuffer, ?byteOffset: Int, ?byteLength: Int) {}
+
+	static public function make(byteLength: Int): ByteArray {
+		return null;
+	}
+
+	public var byteLength(get, never): Int;
+
+	inline function get_byteLength(): Int {
+		return 0;
+	}
+
+	public var byteOffset(get, never): Int;
+
+	inline function get_byteOffset(): Int {
+		return 0;
+	}
+
+	public inline function getInt8(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getUint8(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getInt16(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getUint16(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getInt32(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getUint32(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getFloat32(byteOffset: Int): FastFloat {
+		return 0;
+	}
+
+	public inline function getFloat64(byteOffset: Int): Float {
+		return 0;
+	}
+
+	public inline function setInt8(byteOffset: Int, value: Int): Void {}
+
+	public inline function setUint8(byteOffset: Int, value: Int): Void {}
+
+	public inline function setInt16(byteOffset: Int, value: Int): Void {}
+
+	public inline function setUint16(byteOffset: Int, value: Int): Void {}
+
+	public inline function setInt32(byteOffset: Int, value: Int): Void {}
+
+	public inline function setUint32(byteOffset: Int, value: Int): Void {}
+
+	public inline function setFloat32(byteOffset: Int, value: FastFloat): Void {}
+
+	public inline function setFloat64(byteOffset: Int, value: Float): Void {}
+
+	public inline function getInt16LE(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getUint16LE(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getInt32LE(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getUint32LE(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getFloat32LE(byteOffset: Int): FastFloat {
+		return 0;
+	}
+
+	public inline function getFloat64LE(byteOffset: Int): Float {
+		return 0;
+	}
+
+	public inline function setInt16LE(byteOffset: Int, value: Int): Void {}
+
+	public inline function setUint16LE(byteOffset: Int, value: Int): Void {}
+
+	public inline function setInt32LE(byteOffset: Int, value: Int): Void {}
+
+	public inline function setUint32LE(byteOffset: Int, value: Int): Void {}
+
+	public inline function setFloat32LE(byteOffset: Int, value: FastFloat): Void {}
+
+	public inline function setFloat64LE(byteOffset: Int, value: Float): Void {}
+
+	public inline function getInt16BE(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getUint16BE(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getInt32BE(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getUint32BE(byteOffset: Int): Int {
+		return 0;
+	}
+
+	public inline function getFloat32BE(byteOffset: Int): FastFloat {
+		return 0;
+	}
+
+	public inline function getFloat64BE(byteOffset: Int): Float {
+		return 0;
+	}
+
+	public inline function setInt16BE(byteOffset: Int, value: Int): Void {}
+
+	public inline function setUint16BE(byteOffset: Int, value: Int): Void {}
+
+	public inline function setInt32BE(byteOffset: Int, value: Int): Void {}
+
+	public inline function setUint32BE(byteOffset: Int, value: Int): Void {}
+
+	public inline function setFloat32BE(byteOffset: Int, value: FastFloat): Void {}
+
+	public inline function setFloat64BE(byteOffset: Int, value: Float): Void {}
+
+	public inline function subarray(start: Int, ?end: Int): ByteArray {
+		return new ByteArray(buffer, start, end != null ? end - start : null);
+	}
+}

Kha/Backends/Empty/kha/arrays/ByteBuffer.hx

@@ -0,0 +1,9 @@
+package kha.arrays;
+
+class ByteBuffer {
+	public static function create(length: Int): ByteBuffer {
+		return null;
+	}
+
+	function new(length: Int) {}
+}

Kha/Backends/Empty/kha/audio1/Audio.hx

@@ -0,0 +1,23 @@
+package kha.audio1;
+
+import kha.Sound;
+
+class Audio {
+	/**
+	 * Plays a sound immediately.
+	 * @param sound
+	 * The sound to play
+	 * @param loop
+	 * Whether or not to automatically loop the sound
+	 * @return A channel object that can be used to control the playing sound. Please be a ware that Null is returned when the maximum number of simultaneously played channels was reached.
+	 */
+	public static function play(sound: Sound, loop: Bool = false): AudioChannel {
+		return null;
+	}
+
+	public static function stream(sound: Sound, loop: Bool = false): kha.audio1.AudioChannel {
+		return null;
+	}
+
+	public static function _playAgain(channel: kha.audio2.AudioChannel): Void {}
+}

Kha/Backends/Empty/kha/audio2/Audio.hx

@@ -0,0 +1,14 @@
+package kha.audio2;
+
+import kha.Sound;
+import kha.internal.IntBox;
+
+class Audio {
+	public static var disableGcInteractions = false;
+	public static var samplesPerSecond: Int;
+	public static var audioCallback: IntBox->Buffer->Void;
+
+	public static function stream(sound: Sound, loop: Bool = false): kha.audio1.AudioChannel {
+		return null;
+	}
+}

Kha/Backends/Empty/kha/graphics4/CubeMap.hx

@@ -0,0 +1,47 @@
+package kha.graphics4;
+
+import haxe.io.Bytes;
+
+class CubeMap implements Canvas implements Resource {
+	public static function createRenderTarget(size: Int, format: TextureFormat = null, depthStencil: DepthStencilFormat = null): CubeMap {
+		return null;
+	}
+
+	public function unload(): Void {}
+
+	public function lock(level: Int = 0): Bytes {
+		return null;
+	}
+
+	public function unlock(): Void {}
+
+	public var width(get, never): Int;
+
+	function get_width(): Int {
+		return 0;
+	}
+
+	public var height(get, never): Int;
+
+	function get_height(): Int {
+		return 0;
+	}
+
+	public var g1(get, never): kha.graphics1.Graphics;
+
+	function get_g1(): kha.graphics1.Graphics {
+		return null;
+	}
+
+	public var g2(get, never): kha.graphics2.Graphics;
+
+	function get_g2(): kha.graphics2.Graphics {
+		return null;
+	}
+
+	public var g4(get, never): kha.graphics4.Graphics;
+
+	function get_g4(): kha.graphics4.Graphics {
+		return null;
+	}
+}

Kha/Backends/Empty/kha/graphics4/FragmentShader.hx

@@ -0,0 +1,19 @@
+package kha.graphics4;
+
+class FragmentShader {
+	public var sources: Array<String>;
+	public var type: Dynamic;
+	public var shader: Dynamic;
+	public var files: Array<String>;
+
+	public function new(sources: Array<Blob>, files: Array<String>) {}
+
+	public static function fromSource(source: String): FragmentShader {
+		return null;
+	}
+
+	public function delete(): Void {
+		shader = null;
+		sources = null;
+	}
+}

Kha/Backends/Empty/kha/graphics4/IndexBuffer.hx

@@ -0,0 +1,19 @@
+package kha.graphics4;
+
+import kha.graphics4.Usage;
+
+class IndexBuffer {
+	public function new(indexCount: Int, usage: Usage, canRead: Bool = false) {}
+
+	public function lock(?start: Int, ?count: Int): Array<Int> {
+		return null;
+	}
+
+	public function unlock(?count: Int): Void {}
+
+	public function set(): Void {}
+
+	public function count(): Int {
+		return 0;
+	}
+}

Kha/Backends/Empty/kha/graphics4/PipelineState.hx

@@ -0,0 +1,24 @@
+package kha.graphics4;
+
+import kha.graphics4.FragmentShader;
+import kha.graphics4.VertexData;
+import kha.graphics4.VertexShader;
+import kha.graphics4.VertexStructure;
+
+class PipelineState extends PipelineStateBase {
+	public function new() {
+		super();
+	}
+
+	public function compile(): Void {}
+
+	public function set(): Void {}
+
+	public function getConstantLocation(name: String): kha.graphics4.ConstantLocation {
+		return null;
+	}
+
+	public function getTextureUnit(name: String): kha.graphics4.TextureUnit {
+		return null;
+	}
+}

Kha/Backends/Empty/kha/graphics4/VertexBuffer.hx

@@ -0,0 +1,28 @@
+package kha.graphics4;
+
+import kha.arrays.Float32Array;
+import kha.graphics4.Usage;
+import kha.graphics4.VertexStructure;
+import kha.graphics4.VertexData;
+
+class VertexBuffer {
+	public function new(vertexCount: Int, structure: VertexStructure, usage: Usage, instanceDataStepRate: Int = 0, canRead: Bool = false) {}
+
+	public function lock(?start: Int, ?count: Int): Float32Array {
+		return null;
+	}
+
+	public function unlock(?count: Int): Void {}
+
+	public function stride(): Int {
+		return 0;
+	}
+
+	public function count(): Int {
+		return 0;
+	}
+
+	public function set(offset: Int): Int {
+		return 0;
+	}
+}

Kha/Backends/Empty/kha/graphics4/VertexShader.hx

@@ -0,0 +1,19 @@
+package kha.graphics4;
+
+class VertexShader {
+	public var sources: Array<String>;
+	public var type: Dynamic;
+	public var shader: Dynamic;
+	public var files: Array<String>;
+
+	public function new(sources: Array<Blob>, files: Array<String>) {}
+
+	public static function fromSource(source: String): FragmentShader {
+		return null;
+	}
+
+	public function delete(): Void {
+		shader = null;
+		sources = null;
+	}
+}

Kha/Backends/Empty/kha/input/MouseImpl.hx

@@ -0,0 +1,7 @@
+package kha.input;
+
+class MouseImpl extends kha.input.Mouse {
+	public function new() {
+		super();
+	}
+}

Kha/Backends/Empty/kha/netsync/Network.hx

@@ -0,0 +1,11 @@
+package kha.netsync;
+
+import haxe.io.Bytes;
+
+class Network {
+	public function new(url: String, port: Int, errorCallback: Void->Void, closeCallback: Void->Void) {}
+
+	public function send(bytes: Bytes, mandatory: Bool): Void {}
+
+	public function listen(listener: Bytes->Void): Void {}
+}

Kha/Backends/Empty/kha/network/Http.hx

@@ -0,0 +1,8 @@
+package kha.network;
+
+import haxe.io.Bytes;
+
+class Http {
+	public static function request(url: String, path: String, data: String, port: Int, secure: Bool, method: HttpMethod, headers: Map<String, String>,
+		callback: Int->Int->String->Void /*error, response, body*/): Void {}
+}

Kha/Backends/HTML5-Worker/kha/Blob.hx

@@ -0,0 +1,3 @@
+package kha;
+
+typedef Blob = kha.internal.BytesBlob;

Kha/Backends/HTML5-Worker/kha/Display.hx

@@ -0,0 +1,77 @@
+package kha;
+
+import js.Browser;
+
+class Display {
+	static var instance: Display = new Display();
+
+	function new() {}
+
+	public static function init(): Void {}
+
+	public static var primary(get, never): Display;
+
+	static function get_primary(): Display {
+		return instance;
+	}
+
+	public static var all(get, never): Array<Display>;
+
+	static function get_all(): Array<Display> {
+		return [primary];
+	}
+
+	public var available(get, never): Bool;
+
+	function get_available(): Bool {
+		return true;
+	}
+
+	public var name(get, never): String;
+
+	function get_name(): String {
+		return "Display";
+	}
+
+	public var x(get, never): Int;
+
+	function get_x(): Int {
+		return 0;
+	}
+
+	public var y(get, never): Int;
+
+	function get_y(): Int {
+		return 0;
+	}
+
+	public var width(get, never): Int;
+
+	function get_width(): Int {
+		return 800;
+	}
+
+	public var height(get, never): Int;
+
+	function get_height(): Int {
+		return 600;
+	}
+
+	public var frequency(get, never): Int;
+
+	function get_frequency(): Int {
+		return 60;
+	}
+
+	public var pixelsPerInch(get, never): Int;
+
+	function get_pixelsPerInch(): Int {
+		return 96;
+	}
+
+	public var modes(get, never): Array<DisplayMode>;
+
+	function get_modes(): Array<DisplayMode> {
+		return [];
+	}
+}

Kha/Backends/HTML5-Worker/kha/Font.hx

@@ -0,0 +1,3 @@
+package kha;
+
+typedef Font = kha.Kravur;

Kha/Backends/HTML5-Worker/kha/Image.hx

@@ -0,0 +1,222 @@
+package kha;
+
+import haxe.io.Bytes;
+import kha.graphics4.Graphics;
+import kha.graphics4.DepthStencilFormat;
+import kha.graphics4.TextureFormat;
+import kha.graphics4.Usage;
+
+class Image implements Canvas implements Resource {
+	public var id: Int;
+	public var _rtid: Int;
+
+	public static var _lastId: Int = -1;
+	static var lastRtId: Int = -1;
+
+	var w: Int;
+	var h: Int;
+	var rw: Int;
+	var rh: Int;
+	var myFormat: TextureFormat;
+	var bytes: Bytes = null;
+
+	public function new(id: Int, rtid: Int, width: Int, height: Int, realWidth: Int, realHeight: Int, format: TextureFormat) {
+		this.id = id;
+		this._rtid = rtid;
+		w = width;
+		h = height;
+		rw = realWidth;
+		rh = realHeight;
+		myFormat = format;
+	}
+
+	public static function create(width: Int, height: Int, format: TextureFormat = null, usage: Usage = null, readable: Bool = false): Image {
+		if (format == null)
+			format = TextureFormat.RGBA32;
+		if (usage == null)
+			usage = Usage.StaticUsage;
+		var id = ++_lastId;
+		Worker.postMessage({
+			command: 'createImage',
+			id: id,
+			width: width,
+			height: height,
+			format: format,
+			usage: usage
+		});
+		return new Image(id, -1, width, height, width, height, format);
+	}
+
+	public static function create3D(width: Int, height: Int, depth: Int, format: TextureFormat = null, usage: Usage = null, readable: Bool = false): Image {
+		return null;
+	}
+
+	public static function createRenderTarget(width: Int, height: Int, format: TextureFormat = null,
+			depthStencil: DepthStencilFormat = DepthStencilFormat.NoDepthAndStencil, antiAliasingSamples: Int = 1): Image {
+		if (format == null)
+			format = TextureFormat.RGBA32;
+		var rtid = ++lastRtId;
+		Worker.postMessage({
+			command: 'createRenderTarget',
+			id: rtid,
+			width: width,
+			height: height
+		});
+		return new Image(-1, rtid, width, height, width, height, format);
+	}
+
+	public static function fromBytes(bytes: Bytes, width: Int, height: Int, format: TextureFormat = null, usage: Usage = null, readable: Bool = false): Image {
+		return null;
+	}
+
+	public static function fromBytes3D(bytes: Bytes, width: Int, height: Int, depth: Int, format: TextureFormat = null, usage: Usage = null,
+			readable: Bool = false): Image {
+		return null;
+	}
+
+	public static var maxSize(get, never): Int;
+
+	static function get_maxSize(): Int {
+		return 1024 * 4;
+	}
+
+	public static var nonPow2Supported(get, never): Bool;
+
+	static function get_nonPow2Supported(): Bool {
+		return true;
+	}
+
+	public static function renderTargetsInvertedY(): Bool {
+		return true;
+	}
+
+	public function isOpaque(x: Int, y: Int): Bool {
+		return false;
+	}
+
+	public function unload(): Void {}
+
+	public function lock(level: Int = 0): Bytes {
+		if (bytes == null) {
+			switch (myFormat) {
+				case RGBA32:
+					bytes = Bytes.alloc(4 * width * height);
+				case L8:
+					bytes = Bytes.alloc(width * height);
+				case RGBA128:
+					bytes = Bytes.alloc(16 * width * height);
+				case DEPTH16:
+					bytes = Bytes.alloc(2 * width * height);
+				case RGBA64:
+					bytes = Bytes.alloc(8 * width * height);
+				case A32:
+					bytes = Bytes.alloc(4 * width * height);
+				case A16:
+					bytes = Bytes.alloc(2 * width * height);
+			}
+		}
+		return bytes;
+	}
+
+	public function unlock(): Void {
+		Worker.postMessage({command: 'unlockImage', id: id, bytes: bytes.getData()});
+	}
+
+	public function getPixels(): Bytes {
+		return null;
+	}
+
+	public function generateMipmaps(levels: Int): Void {}
+
+	public function setMipmaps(mipmaps: Array<Image>): Void {}
+
+	public function setDepthStencilFrom(image: Image): Void {}
+
+	public function clear(x: Int, y: Int, z: Int, width: Int, height: Int, depth: Int, color: Color): Void {}
+
+	public var width(get, never): Int;
+
+	function get_width(): Int {
+		return w;
+	}
+
+	public var height(get, never): Int;
+
+	function get_height(): Int {
+		return h;
+	}
+
+	public var depth(get, never): Int;
+
+	function get_depth(): Int {
+		return 1;
+	}
+
+	public var format(get, never): TextureFormat;
+
+	function get_format(): TextureFormat {
+		return myFormat;
+	}
+
+	public var realWidth(get, never): Int;
+
+	function get_realWidth(): Int {
+		return rw;
+	}
+
+	public var realHeight(get, never): Int;
+
+	function get_realHeight(): Int {
+		return rh;
+	}
+
+	static function formatByteSize(format: TextureFormat): Int {
+		return switch (format) {
+			case RGBA32: 4;
+			case L8: 1;
+			case RGBA128: 16;
+			case DEPTH16: 2;
+			case RGBA64: 8;
+			case A32: 4;
+			case A16: 2;
+			default: 4;
+		}
+	}
+
+	public var stride(get, never): Int;
+
+	function get_stride(): Int {
+		return formatByteSize(myFormat) * width;
+	}
+
+	var graphics1: kha.graphics1.Graphics;
+	var graphics2: kha.graphics2.Graphics;
+	var graphics4: kha.graphics4.Graphics;
+
+	public var g1(get, never): kha.graphics1.Graphics;
+
+	function get_g1(): kha.graphics1.Graphics {
+		if (graphics1 == null) {
+			graphics1 = new kha.graphics2.Graphics1(this);
+		}
+		return graphics1;
+	}
+
+	public var g2(get, never): kha.graphics2.Graphics;
+
+	function get_g2(): kha.graphics2.Graphics {
+		if (graphics2 == null) {
+			graphics2 = new kha.graphics4.Graphics2(this);
+		}
+		return graphics2;
+	}
+
+	public var g4(get, never): kha.graphics4.Graphics;
+
+	function get_g4(): kha.graphics4.Graphics {
+		if (graphics4 == null) {
+			graphics4 = new kha.html5worker.Graphics(this);
+		}
+		return graphics4;
+	}
+}

Kha/Backends/HTML5-Worker/kha/LoaderImpl.hx

@@ -0,0 +1,80 @@
+package kha;
+
+import haxe.io.Bytes;
+import kha.graphics4.TextureFormat;
+
+class LoaderImpl {
+	static var loadingImages: Map<Int, Image->Void> = new Map();
+	static var loadingSounds: Map<Int, Sound->Void> = new Map();
+	static var soundId = -1;
+	static var loadingVideos: Map<Int, Video->Void> = new Map();
+	static var videoId = -1;
+	static var loadingBlobs: Map<Int, Blob->Void> = new Map();
+	static var blobId = -1;
+	static var sounds: Map<Int, Sound> = new Map();
+
+	public static function getImageFormats(): Array<String> {
+		return ["png", "jpg", "hdr"];
+	}
+
+	public static function loadImageFromDescription(desc: Dynamic, done: kha.Image->Void, failed: AssetError->Void) {
+		++kha.Image._lastId;
+		loadingImages[kha.Image._lastId] = done;
+		Worker.postMessage({command: 'loadImage', file: desc.files[0], id: kha.Image._lastId});
+	}
+
+	public static function _loadedImage(value: Dynamic) {
+		var image = new Image(value.id, -1, value.width, value.height, value.realWidth, value.realHeight, TextureFormat.RGBA32);
+		loadingImages[value.id](image);
+		loadingImages.remove(value.id);
+	}
+
+	public static function getSoundFormats(): Array<String> {
+		return ["mp4"];
+	}
+
+	public static function loadSoundFromDescription(desc: Dynamic, done: kha.Sound->Void, failed: AssetError->Void) {
+		++soundId;
+		loadingSounds[soundId] = done;
+		Worker.postMessage({command: 'loadSound', file: desc.files[0], id: soundId});
+	}
+
+	public static function _loadedSound(value: Dynamic) {
+		var sound = new kha.html5worker.Sound(value.id);
+		loadingSounds[value.id](sound);
+		loadingSounds.remove(value.id);
+		sounds.set(value.id, sound);
+	}
+
+	public static function _uncompressedSound(value: Dynamic): Void {
+		cast(sounds[value.id], kha.html5worker.Sound)._callback();
+	}
+
+	public static function getVideoFormats(): Array<String> {
+		return ["mp4"];
+	}
+
+	public static function loadVideoFromDescription(desc: Dynamic, done: kha.Video->Void, failed: AssetError->Void): Void {
+		++videoId;
+		loadingVideos[videoId] = done;
+		Worker.postMessage({command: 'loadVideo', file: desc.files[0], id: videoId});
+	}
+
+	public static function loadBlobFromDescription(desc: Dynamic, done: Blob->Void, failed: AssetError->Void) {
+		++blobId;
+		loadingBlobs[blobId] = done;
+		Worker.postMessage({command: 'loadBlob', file: desc.files[0], id: blobId});
+	}
+
+	public static function _loadedBlob(value: Dynamic) {
+		var blob = new Blob(Bytes.ofData(value.data));
+		loadingBlobs[value.id](blob);
+		loadingBlobs.remove(value.id);
+	}
+
+	public static function loadFontFromDescription(desc: Dynamic, done: Font->Void, failed: AssetError->Void): Void {
+		loadBlobFromDescription(desc, function(blob: Blob) {
+			done(new Kravur(blob));
+		}, failed);
+	}
+}

Kha/Backends/HTML5-Worker/kha/Starter.hx

@@ -0,0 +1,89 @@
+package kha;
+
+import kha.Game;
+import kha.input.Gamepad;
+import kha.input.Keyboard;
+import kha.js.WorkerGraphics;
+import kha.Key;
+import kha.Loader;
+
+class Starter {
+	var gameToStart: Game;
+
+	static var frame: Framebuffer = null;
+	static var keyboard: Keyboard;
+	static var mouse: kha.input.Mouse;
+	static var gamepad: Gamepad;
+
+	public static var mouseX: Int;
+	public static var mouseY: Int;
+
+	public function new() {
+		Worker.handleMessages(messageHandler);
+		keyboard = new Keyboard();
+		mouse = new kha.input.Mouse();
+		gamepad = new Gamepad();
+
+		Loader.init(new kha.js.Loader());
+		Scheduler.init();
+	}
+
+	public function start(game: Game): Void {
+		gameToStart = game;
+		Configuration.setScreen(new EmptyScreen(Color.fromBytes(0, 0, 0)));
+		Loader.the.loadProject(loadFinished);
+	}
+
+	public function loadFinished() {
+		Loader.the.initProject();
+
+		gameToStart.width = Loader.the.width;
+		gameToStart.height = Loader.the.height;
+
+		Sys.init(gameToStart.width, gameToStart.height);
+		frame = new Framebuffer(new WorkerGraphics(gameToStart.width, gameToStart.height), null);
+		Scheduler.start();
+
+		Configuration.setScreen(gameToStart);
+
+		gameToStart.loadFinished();
+	}
+
+	public function lockMouse(): Void {}
+
+	public function unlockMouse(): Void {}
+
+	public function canLockMouse(): Bool {
+		return false;
+	}
+
+	public function isMouseLocked(): Bool {
+		return false;
+	}
+
+	public function notifyOfMouseLockChange(func: Void->Void, error: Void->Void): Void {}
+
+	public function removeFromMouseLockChange(func: Void->Void, error: Void->Void): Void {}
+
+	function messageHandler(value: Dynamic): Void {
+		switch (value.data.command) {
+			case 'loadedBlob':
+				cast(Loader.the, kha.js.Loader).loadedBlob(value.data);
+			case 'loadedImage':
+				cast(Loader.the, kha.js.Loader).loadedImage(value.data);
+			case 'loadedSound':
+				cast(Loader.the, kha.js.Loader).loadedSound(value.data);
+			case 'loadedMusic':
+				cast(Loader.the, kha.js.Loader).loadedMusic(value.data);
+			case 'frame':
+				if (frame != null) {
+					Scheduler.executeFrame();
+					Configuration.screen().render(frame);
+				}
+			case 'keyDown':
+				Configuration.screen().keyDown(Key.createByIndex(value.data.key), value.data.char);
+			case 'keyUp':
+				Configuration.screen().keyUp(Key.createByIndex(value.data.key), value.data.char);
+		}
+	}
+}

Kha/Backends/HTML5-Worker/kha/Storage.hx

@@ -0,0 +1,15 @@
+package kha;
+
+import haxe.io.Bytes;
+import haxe.io.BytesData;
+import js.lib.ArrayBuffer;
+
+class Storage {
+	public static function namedFile(name: String): StorageFile {
+		return null;
+	}
+
+	public static function defaultFile(): StorageFile {
+		return namedFile("default.kha");
+	}
+}

Kha/Backends/HTML5-Worker/kha/SystemImpl.hx

@@ -0,0 +1,241 @@
+package kha;
+
+import kha.input.Gamepad;
+import kha.input.Keyboard;
+import kha.input.KeyCode;
+import kha.input.Mouse;
+import kha.input.Surface;
+import kha.System;
+
+class GamepadStates {
+	public var axes: Array<Float>;
+	public var buttons: Array<Float>;
+
+	public function new() {
+		axes = new Array<Float>();
+		buttons = new Array<Float>();
+	}
+}
+
+class SystemImpl {
+	static var options: SystemOptions;
+	@:allow(kha.Window)
+	static var width: Int = 800;
+	@:allow(kha.Window)
+	static var height: Int = 600;
+	static var dpi: Int = 96;
+	static inline var maxGamepads: Int = 4;
+	static var frame: Framebuffer;
+	static var keyboard: Keyboard = null;
+	static var mouse: kha.input.Mouse;
+	static var surface: Surface;
+	static var gamepads: Array<Gamepad>;
+
+	public static function init(options: SystemOptions, callback: Window->Void) {
+		Worker.handleMessages(messageHandler);
+
+		Shaders.init();
+		var shaders = new Array<Dynamic>();
+		for (field in Reflect.fields(Shaders)) {
+			if (field != "init" && field != "__name__" && field.substr(field.length - 5, 4) != "Data") {
+				var shader = Reflect.field(Shaders, field);
+				shaders.push({
+					name: field,
+					files: shader.files,
+					sources: shader.sources
+				});
+			}
+		}
+		Worker.postMessage({command: 'setShaders', shaders: shaders});
+
+		SystemImpl.options = options;
+
+		// haxe.Log.trace = untyped js.Boot.__trace; // Hack for JS trace problems
+
+		keyboard = new Keyboard();
+		mouse = new Mouse();
+		surface = new Surface();
+		gamepads = new Array<Gamepad>();
+		for (i in 0...maxGamepads) {
+			gamepads[i] = new Gamepad(i);
+		}
+		var window = new Window();
+
+		var g4 = new kha.html5worker.Graphics();
+		frame = new Framebuffer(0, null, null, g4);
+		frame.init(new kha.graphics2.Graphics1(frame), new kha.graphics4.Graphics2(frame), g4);
+
+		Scheduler.init();
+		Scheduler.start();
+
+		callback(window);
+	}
+
+	public static function windowWidth(windowId: Int = 0): Int {
+		return Window.get(0).width;
+	}
+
+	public static function windowHeight(windowId: Int = 0): Int {
+		return Window.get(0).height;
+	}
+
+	public static function screenDpi(): Int {
+		return dpi;
+	}
+
+	public static function getScreenRotation(): ScreenRotation {
+		return ScreenRotation.RotationNone;
+	}
+
+	public static function getTime(): Float {
+		return js.Syntax.code("Date.now()") / 1000;
+	}
+
+	public static function getVsync(): Bool {
+		return true;
+	}
+
+	public static function getRefreshRate(): Int {
+		return 60;
+	}
+
+	public static function getSystemId(): String {
+		return "HTML5-Worker";
+	}
+
+	public static function vibrate(ms: Int): Void {
+		js.Browser.navigator.vibrate(ms);
+	}
+
+	public static function getLanguage(): String {
+		final lang = js.Browser.navigator.language;
+		return lang.substr(0, 2).toLowerCase();
+	}
+
+	public static function requestShutdown(): Bool {
+		return false;
+	}
+
+	public static function getMouse(num: Int): Mouse {
+		if (num != 0)
+			return null;
+		return mouse;
+	}
+
+	public static function getKeyboard(num: Int): Keyboard {
+		if (num != 0)
+			return null;
+		return keyboard;
+	}
+
+	public static function lockMouse(): Void {}
+
+	public static function unlockMouse(): Void {}
+
+	public static function canLockMouse(): Bool {
+		return false;
+	}
+
+	public static function isMouseLocked(): Bool {
+		return false;
+	}
+
+	public static function notifyOfMouseLockChange(func: Void->Void, error: Void->Void): Void {}
+
+	public static function removeFromMouseLockChange(func: Void->Void, error: Void->Void): Void {}
+
+	static function unload(_): Void {}
+
+	public static function canSwitchFullscreen(): Bool {
+		return false;
+	}
+
+	public static function isFullscreen(): Bool {
+		return false;
+	}
+
+	public static function requestFullscreen(): Void {}
+
+	public static function exitFullscreen(): Void {}
+
+	public static function notifyOfFullscreenChange(func: Void->Void, error: Void->Void): Void {}
+
+	public static function removeFromFullscreenChange(func: Void->Void, error: Void->Void): Void {}
+
+	public static function changeResolution(width: Int, height: Int): Void {}
+
+	public static function setKeepScreenOn(on: Bool): Void {}
+
+	public static function loadUrl(url: String): Void {}
+
+	public static function getGamepadId(index: Int): String {
+		return "unknown";
+	}
+
+	public static function getGamepadVendor(index: Int): String {
+		return "unknown";
+	}
+
+	public static function setGamepadRumble(index: Int, leftAmount: Float, rightAmount: Float) {}
+
+	static function messageHandler(value: Dynamic): Void {
+		switch (value.data.command) {
+			case 'patch':
+				js.Lib.eval(value.data.source);
+			case 'loadedImage':
+				LoaderImpl._loadedImage(value.data);
+			case 'loadedSound':
+				LoaderImpl._loadedSound(value.data);
+			case 'loadedBlob':
+				LoaderImpl._loadedBlob(value.data);
+			case 'uncompressedSound':
+				LoaderImpl._uncompressedSound(value.data);
+			case 'frame':
+				if (frame != null) {
+					Scheduler.executeFrame();
+					Worker.postMessage({command: 'beginFrame'});
+					System.render([frame]);
+					Worker.postMessage({command: 'endFrame'});
+				}
+			case 'setWindowSize':
+				width = value.data.width;
+				height = value.data.height;
+			case 'keyDown':
+				keyboard.sendDownEvent(cast value.data.key);
+			case 'keyUp':
+				keyboard.sendUpEvent(cast value.data.key);
+			case 'keyPress':
+				keyboard.sendPressEvent(value.data.character);
+			case 'mouseDown':
+				mouse.sendDownEvent(0, value.data.button, value.data.x, value.data.y);
+			case 'mouseUp':
+				mouse.sendUpEvent(0, value.data.button, value.data.x, value.data.y);
+			case 'mouseMove':
+				mouse.sendMoveEvent(0, value.data.x, value.data.y, value.data.mx, value.data.my);
+			case 'mouseWheel':
+				mouse.sendWheelEvent(0, value.data.delta);
+		}
+	}
+
+	public static function safeZone(): Float {
+		return 1.0;
+	}
+
+	public static function login(): Void {}
+
+	public static function automaticSafeZone(): Bool {
+		return true;
+	}
+
+	public static function setSafeZone(value: Float): Void {}
+
+	public static function unlockAchievement(id: Int): Void {}
+
+	public static function waitingForLogin(): Bool {
+		return false;
+	}
+
+	public static function disallowUserChange(): Void {}
+
+	public static function allowUserChange(): Void {}
+}

Kha/Backends/HTML5-Worker/kha/Window.hx

@@ -0,0 +1,119 @@
+package kha;
+
+class Window {
+	static var instance: Window;
+
+	@:allow(kha.SystemImpl)
+	function new() {
+		instance = this;
+	}
+
+	public static function create(win: WindowOptions = null, frame: FramebufferOptions = null): Window {
+		return null;
+	}
+
+	public static function destroy(window: Window): Void {}
+
+	public static function get(index: Int): Window {
+		if (index == 0) {
+			return instance;
+		}
+		else {
+			return null;
+		}
+	}
+
+	public static var all(get, never): Array<Window>;
+
+	static function get_all(): Array<Window> {
+		return [instance];
+	}
+
+	public function resize(width: Int, height: Int): Void {}
+
+	public function move(x: Int, y: Int): Void {}
+
+	public function changeWindowFeatures(features: Int): Void {}
+
+	public function changeFramebuffer(frame: FramebufferOptions): Void {}
+
+	public var x(get, set): Int;
+
+	function get_x(): Int {
+		return 0;
+	}
+
+	function set_x(value: Int): Int {
+		return 0;
+	}
+
+	public var y(get, set): Int;
+
+	function get_y(): Int {
+		return 0;
+	}
+
+	function set_y(value: Int): Int {
+		return 0;
+	}
+
+	public var width(get, set): Int;
+
+	function get_width(): Int {
+		return SystemImpl.width;
+	}
+
+	function set_width(value: Int): Int {
+		return SystemImpl.width;
+	}
+
+	public var height(get, set): Int;
+
+	function get_height(): Int {
+		return SystemImpl.height;
+	}
+
+	function set_height(value: Int): Int {
+		return SystemImpl.height;
+	}
+
+	public var mode(get, set): WindowMode;
+
+	function get_mode(): WindowMode {
+		return Windowed;
+	}
+
+	function set_mode(value: WindowMode): WindowMode {
+		return Windowed;
+	}
+
+	public var visible(get, set): Bool;
+
+	function get_visible(): Bool {
+		return true;
+	}
+
+	function set_visible(value: Bool): Bool {
+		return true;
+	}
+
+	public var title(get, set): String;
+
+	function get_title(): String {
+		return "Kha";
+	}
+
+	function set_title(value: String): String {
+		return "Kha";
+	}
+
+	public function notifyOnResize(callback: Int->Int->Void): Void {}
+
+	public function notifyOnPpiChange(callback: Int->Void): Void {}
+
+	public var vSynced(get, never): Bool;
+
+	function get_vSynced(): Bool {
+		return true;
+	}
+}

Kha/Backends/HTML5-Worker/kha/Worker.hx

@@ -0,0 +1,16 @@
+package kha;
+
+class Worker {
+	public static function postMessage(m: Dynamic): Void {
+		try {
+			js.Syntax.code("self.postMessage(m)");
+		}
+		catch (e:Dynamic) {
+			trace(e);
+		}
+	}
+
+	public static function handleMessages(messageHandler: Dynamic->Void) {
+		untyped js.Syntax.code("self.onmessage = messageHandler");
+	}
+}

Kha/Backends/HTML5-Worker/kha/arrays/ByteArray.hx

@@ -0,0 +1,187 @@
+package kha.arrays;
+
+import js.lib.DataView;
+import kha.FastFloat;
+
+@:forward
+abstract ByteArray(DataView) to DataView {
+	static final LITTLE_ENDIAN: Bool = js.Syntax.code("new Uint8Array(new Uint32Array([0x12345678]).buffer)[0] === 0x78");
+
+	public var buffer(get, never): ByteBuffer;
+
+	inline function get_buffer(): ByteBuffer {
+		return cast this.buffer;
+	}
+
+	public function new(buffer: ByteBuffer, ?byteOffset: Int, ?byteLength: Int) {
+		this = new DataView(buffer, byteOffset, byteLength);
+	}
+
+	static public function make(byteLength: Int): ByteArray {
+		return new ByteArray(ByteBuffer.create(byteLength));
+	}
+
+	public inline function getInt8(byteOffset: Int): Int {
+		return this.getInt8(byteOffset);
+	}
+
+	public inline function getUint8(byteOffset: Int): Int {
+		return this.getUint8(byteOffset);
+	}
+
+	public inline function getInt16(byteOffset: Int): Int {
+		return this.getInt16(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function getUint16(byteOffset: Int): Int {
+		return this.getUint16(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function getInt32(byteOffset: Int): Int {
+		return this.getInt32(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function getUint32(byteOffset: Int): Int {
+		return this.getUint32(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function getFloat32(byteOffset: Int): FastFloat {
+		return this.getFloat32(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function getFloat64(byteOffset: Int): Float {
+		return this.getFloat64(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function setInt8(byteOffset: Int, value: Int): Void {
+		this.setInt8(byteOffset, value);
+	}
+
+	public inline function setUint8(byteOffset: Int, value: Int): Void {
+		this.setUint8(byteOffset, value);
+	}
+
+	public inline function setInt16(byteOffset: Int, value: Int): Void {
+		this.setInt16(byteOffset, value, LITTLE_ENDIAN);
+	}
+
+	public inline function setUint16(byteOffset: Int, value: Int): Void {
+		this.setUint16(byteOffset, value, LITTLE_ENDIAN);
+	}
+
+	public inline function setInt32(byteOffset: Int, value: Int): Void {
+		this.setInt32(byteOffset, value, LITTLE_ENDIAN);
+	}
+
+	public inline function setUint32(byteOffset: Int, value: Int): Void {
+		this.setUint32(byteOffset, value, LITTLE_ENDIAN);
+	}
+
+	public inline function setFloat32(byteOffset: Int, value: FastFloat): Void {
+		this.setFloat32(byteOffset, value, true);
+	}
+
+	public inline function setFloat64(byteOffset: Int, value: Float): Void {
+		this.setFloat64(byteOffset, value, LITTLE_ENDIAN);
+	}
+
+	public inline function getInt16LE(byteOffset: Int): Int {
+		return this.getInt16(byteOffset, true);
+	}
+
+	public inline function getUint16LE(byteOffset: Int): Int {
+		return this.getUint16(byteOffset, true);
+	}
+
+	public inline function getInt32LE(byteOffset: Int): Int {
+		return this.getInt32(byteOffset, true);
+	}
+
+	public inline function getUint32LE(byteOffset: Int): Int {
+		return this.getUint32(byteOffset, true);
+	}
+
+	public inline function getFloat32LE(byteOffset: Int): FastFloat {
+		return this.getFloat32(byteOffset, true);
+	}
+
+	public inline function getFloat64LE(byteOffset: Int): Float {
+		return this.getFloat64(byteOffset, true);
+	}
+
+	public inline function setInt16LE(byteOffset: Int, value: Int): Void {
+		this.setInt16(byteOffset, value, true);
+	}
+
+	public inline function setUint16LE(byteOffset: Int, value: Int): Void {
+		this.setUint16(byteOffset, value, true);
+	}
+
+	public inline function setInt32LE(byteOffset: Int, value: Int): Void {
+		this.setInt32(byteOffset, value, true);
+	}
+
+	public inline function setUint32LE(byteOffset: Int, value: Int): Void {
+		this.setUint32(byteOffset, value, true);
+	}
+
+	public inline function setFloat32LE(byteOffset: Int, value: FastFloat): Void {
+		this.setFloat32(byteOffset, value, true);
+	}
+
+	public inline function setFloat64LE(byteOffset: Int, value: Float): Void {
+		this.setFloat64(byteOffset, value, true);
+	}
+
+	public inline function getInt16BE(byteOffset: Int): Int {
+		return this.getInt16(byteOffset);
+	}
+
+	public inline function getUint16BE(byteOffset: Int): Int {
+		return this.getUint16(byteOffset);
+	}
+
+	public inline function getInt32BE(byteOffset: Int): Int {
+		return this.getInt32(byteOffset);
+	}
+
+	public inline function getUint32BE(byteOffset: Int): Int {
+		return this.getUint32(byteOffset);
+	}
+
+	public inline function getFloat32BE(byteOffset: Int): FastFloat {
+		return this.getFloat32(byteOffset);
+	}
+
+	public inline function getFloat64BE(byteOffset: Int): Float {
+		return this.getFloat64(byteOffset);
+	}
+
+	public inline function setInt16BE(byteOffset: Int, value: Int): Void {
+		this.setInt16(byteOffset, value);
+	}
+
+	public inline function setUint16BE(byteOffset: Int, value: Int): Void {
+		this.setUint16(byteOffset, value);
+	}
+
+	public inline function setInt32BE(byteOffset: Int, value: Int): Void {
+		this.setInt32(byteOffset, value);
+	}
+
+	public inline function setUint32BE(byteOffset: Int, value: Int): Void {
+		this.setUint32(byteOffset, value);
+	}
+
+	public inline function setFloat32BE(byteOffset: Int, value: FastFloat): Void {
+		this.setFloat32(byteOffset, value);
+	}
+
+	public inline function setFloat64BE(byteOffset: Int, value: Float): Void {
+		this.setFloat64(byteOffset, value);
+	}
+
+	public inline function subarray(start: Int, ?end: Int): ByteArray {
+		return new ByteArray(buffer, start, end != null ? end - start : null);
+	}
+}

Kha/Backends/HTML5-Worker/kha/arrays/ByteBuffer.hx

@@ -0,0 +1,14 @@
+package kha.arrays;
+
+import js.lib.ArrayBuffer;
+
+@:forward
+abstract ByteBuffer(ArrayBuffer) from ArrayBuffer to ArrayBuffer {
+	public static function create(length: Int): ByteBuffer {
+		return new ByteBuffer(length);
+	}
+
+	function new(length: Int) {
+		this = new ArrayBuffer(length);
+	}
+}

Kha/Backends/HTML5-Worker/kha/audio1/Audio.hx

@@ -0,0 +1,13 @@
+package kha.audio1;
+
+class Audio {
+	public static function play(sound: Sound, loop: Bool = false): kha.audio1.AudioChannel {
+		Worker.postMessage({command: 'playSound', id: cast(sound, kha.html5worker.Sound)._id, loop: loop});
+		return null;
+	}
+
+	public static function stream(sound: Sound, loop: Bool = false): kha.audio1.AudioChannel {
+		Worker.postMessage({command: 'streamSound', id: cast(sound, kha.html5worker.Sound)._id, loop: loop});
+		return null;
+	}
+}

Kha/Backends/HTML5-Worker/kha/audio2/Audio.hx

@@ -0,0 +1,13 @@
+package kha.audio2;
+
+import kha.Sound;
+
+class Audio {
+	public static var disableGcInteractions = false;
+	public static var samplesPerSecond: Int;
+	public static var audioCallback: Int->Buffer->Void;
+
+	public static function stream(sound: Sound, loop: Bool = false): kha.audio1.AudioChannel {
+		return null;
+	}
+}

Kha/Backends/HTML5-Worker/kha/graphics4/CubeMap.hx

@@ -0,0 +1,44 @@
+package kha.graphics4;
+
+import haxe.io.Bytes;
+
+class CubeMap implements Canvas implements Resource {
+	public static function createRenderTarget(size: Int, format: TextureFormat, depthStencil: DepthStencilFormat = NoDepthAndStencil): CubeMap {
+		return null;
+	}
+
+	public function unload(): Void {}
+
+	public function lock(level: Int = 0): Bytes {
+		return null;
+	}
+
+	public function unlock(): Void {}
+
+	public var width(get, never): Int;
+	public var height(get, never): Int;
+
+	function get_width(): Int {
+		return 512;
+	}
+
+	function get_height(): Int {
+		return 512;
+	}
+
+	public var g1(get, never): kha.graphics1.Graphics;
+	public var g2(get, never): kha.graphics2.Graphics;
+	public var g4(get, never): kha.graphics4.Graphics;
+
+	function get_g1(): kha.graphics1.Graphics {
+		return null;
+	}
+
+	function get_g2(): kha.graphics2.Graphics {
+		return null;
+	}
+
+	function get_g4(): kha.graphics4.Graphics {
+		return null;
+	}
+}

Kha/Backends/HTML5-Worker/kha/graphics4/FragmentShader.hx

@@ -0,0 +1,27 @@
+package kha.graphics4;
+
+class FragmentShader {
+	public var sources: Array<String>;
+	public var shader: Dynamic;
+	public var files: Array<String>;
+
+	public function new(sources: Array<Blob>, files: Array<String>) {
+		this.sources = [];
+		for (source in sources) {
+			this.sources.push(source.toString());
+		}
+		this.shader = null;
+		this.files = files;
+	}
+
+	public static function fromSource(source: String): FragmentShader {
+		var shader = new FragmentShader([], ["runtime-string"]);
+		shader.sources.push(source);
+		return shader;
+	}
+
+	public function delete(): Void {
+		shader = null;
+		sources = null;
+	}
+}

Kha/Backends/HTML5-Worker/kha/graphics4/IndexBuffer.hx

@@ -0,0 +1,51 @@
+package kha.graphics4;
+
+import kha.arrays.Uint32Array;
+import kha.graphics4.Usage;
+
+class IndexBuffer {
+	static var lastId: Int = -1;
+
+	public var _id: Int;
+	public var _data: Uint32Array;
+
+	var mySize: Int;
+	var usage: Usage;
+	var lockStart: Int = 0;
+	var lockEnd: Int = 0;
+
+	public function new(indexCount: Int, usage: Usage, canRead: Bool = false) {
+		this.usage = usage;
+		mySize = indexCount;
+		_data = new Uint32Array(indexCount);
+		_id = ++lastId;
+		Worker.postMessage({
+			command: 'createIndexBuffer',
+			id: _id,
+			size: indexCount,
+			usage: usage
+		});
+	}
+
+	public function delete(): Void {
+		_data = null;
+	}
+
+	public function lock(?start: Int, ?count: Int): Uint32Array {
+		lockStart = start != null ? start : 0;
+		lockEnd = count != null ? start + count : mySize;
+		return _data.subarray(lockStart, lockEnd);
+	}
+
+	public function unlock(?count: Int): Void {
+		if (count != null)
+			lockEnd = lockStart + count;
+		Worker.postMessage({command: 'updateIndexBuffer', id: _id, data: _data.subarray(lockStart, lockEnd).buffer});
+	}
+
+	public function set(): Void {}
+
+	public function count(): Int {
+		return mySize;
+	}
+}

Kha/Backends/HTML5-Worker/kha/graphics4/PipelineState.hx

@@ -0,0 +1,117 @@
+package kha.graphics4;
+
+import kha.graphics4.FragmentShader;
+import kha.graphics4.VertexData;
+import kha.graphics4.VertexShader;
+import kha.graphics4.VertexStructure;
+
+class PipelineState extends PipelineStateBase {
+	static var lastId: Int = -1;
+
+	public var _id: Int;
+
+	var textures: Array<String>;
+	var textureValues: Array<Dynamic>;
+
+	public function new() {
+		super();
+		_id = ++lastId;
+		textures = new Array<String>();
+		textureValues = new Array<Dynamic>();
+	}
+
+	public function delete(): Void {}
+
+	public function compile(): Void {
+		var index = 0;
+		for (structure in inputLayout) {
+			for (element in structure.elements) {
+				if (element.data == VertexData.Float4x4) {
+					index += 4;
+				}
+				else {
+					++index;
+				}
+			}
+		}
+
+		var layout = new Array<Dynamic>();
+		for (input in inputLayout) {
+			var elements = new Array<Dynamic>();
+			for (element in input.elements) {
+				elements.push({
+					name: element.name,
+					data: element.data
+				});
+			}
+			layout.push({
+				elements: elements
+			});
+		}
+
+		var stencilValue = -1;
+		switch (stencilReferenceValue) {
+			case Static(value):
+				stencilValue = value;
+			case Dynamic:
+				stencilValue = -1;
+		}
+
+		var state = {
+			cullMode: cullMode,
+			depthWrite: depthWrite,
+			depthMode: depthMode,
+			stencilFrontMode: stencilFrontMode,
+			stencilFrontBothPass: stencilFrontBothPass,
+			stencilFrontDepthFail: stencilFrontDepthFail,
+			stencilFrontFail: stencilFrontFail,
+			stencilBackMode: stencilBackMode,
+			stencilBackBothPass: stencilBackBothPass,
+			stencilBackDepthFail: stencilBackDepthFail,
+			stencilBackFail: stencilBackFail,
+			stencilReferenceValue: stencilValue,
+			stencilReadMask: stencilReadMask,
+			stencilWriteMask: stencilWriteMask,
+			blendSource: blendSource,
+			blendDestination: blendDestination,
+			alphaBlendSource: alphaBlendSource,
+			alphaBlendDestination: alphaBlendDestination,
+			colorWriteMaskRed: colorWriteMaskRed,
+			colorWriteMaskGreen: colorWriteMaskGreen,
+			colorWriteMaskBlue: colorWriteMaskBlue,
+			colorWriteMaskAlpha: colorWriteMaskAlpha,
+			conservativeRasterization: conservativeRasterization
+		};
+
+		Worker.postMessage({
+			command: 'compilePipeline',
+			id: _id,
+			frag: fragmentShader.files[0],
+			vert: vertexShader.files[0],
+			layout: layout,
+			state: state
+		});
+	}
+
+	public function getConstantLocation(name: String): kha.graphics4.ConstantLocation {
+		var loc = new kha.html5worker.ConstantLocation();
+		Worker.postMessage({
+			command: 'createConstantLocation',
+			id: loc._id,
+			name: name,
+			pipeline: _id
+		});
+		return loc;
+	}
+
+	public function getTextureUnit(name: String): kha.graphics4.TextureUnit {
+		var unit = new kha.html5worker.TextureUnit();
+		Worker.postMessage({
+			command: 'createTextureUnit',
+			id: unit._id,
+			name: name,
+			pipeline: _id
+		});
+		return unit;
+	}
+}

Kha/Backends/HTML5-Worker/kha/graphics4/VertexBuffer.hx

@@ -0,0 +1,115 @@
+package kha.graphics4;
+
+import kha.arrays.Float32Array;
+import kha.graphics4.Usage;
+import kha.graphics4.VertexStructure;
+import kha.graphics4.VertexData;
+
+class VertexBuffer {
+	static var lastId: Int = -1;
+
+	public var _id: Int;
+	public var _data: Float32Array;
+
+	var mySize: Int;
+	var myStride: Int;
+	var sizes: Array<Int>;
+	var offsets: Array<Int>;
+	var usage: Usage;
+	var instanceDataStepRate: Int;
+	var lockStart: Int = 0;
+	var lockCount: Int = 0;
+
+	public function new(vertexCount: Int, structure: VertexStructure, usage: Usage, instanceDataStepRate: Int = 0, canRead: Bool = false) {
+		this.usage = usage;
+		this.instanceDataStepRate = instanceDataStepRate;
+		mySize = vertexCount;
+		myStride = 0;
+		for (element in structure.elements) {
+			myStride += VertexStructure.dataByteSize(element.data);
+		}
+
+		_data = new Float32Array(Std.int(vertexCount * myStride / 4));
+
+		sizes = new Array<Int>();
+		offsets = new Array<Int>();
+		sizes[structure.elements.length - 1] = 0;
+		offsets[structure.elements.length - 1] = 0;
+
+		var offset = 0;
+		var index = 0;
+		for (element in structure.elements) {
+			var size = 0;
+			size += Std.int(VertexStructure.dataByteSize(element.data) / 4);
+			sizes[index] = size;
+			offsets[index] = offset;
+			offset += VertexStructure.dataByteSize(element.data);
+			++index;
+		}
+
+		_id = ++lastId;
+		var elements = new Array<Dynamic>();
+		for (element in structure.elements) {
+			elements.push({
+				name: element.name,
+				data: element.data
+			});
+		}
+		Worker.postMessage({
+			command: 'createVertexBuffer',
+			id: _id,
+			size: vertexCount,
+			structure: {elements: elements},
+			usage: usage
+		});
+	}
+
+	public function delete(): Void {
+		_data = null;
+	}
+
+	public function lock(?start: Int, ?count: Int): Float32Array {
+		lockStart = start != null ? start : 0;
+		lockCount = count != null ? count : mySize;
+		return _data.subarray(Std.int(lockStart * stride() / 4), Std.int((lockStart + lockCount) * stride() / 4));
+	}
+
+	public function unlock(?count: Int): Void {
+		if (count != null)
+			lockCount = count;
+		Worker.postMessage({
+			command: 'updateVertexBuffer',
+			id: _id,
+			data: _data.subarray(Std.int(lockStart * stride() / 4), Std.int((lockStart + lockCount) * stride() / 4)).buffer,
+			start: lockStart,
+			count: lockCount
+		});
+	}
+
+	public function stride(): Int {
+		return myStride;
+	}
+
+	public function count(): Int {
+		return mySize;
+	}
+
+	public function set(offset: Int): Int {
+		var attributesOffset = 0;
+		for (i in 0...sizes.length) {
+			if (sizes[i] > 4) {
+				var size = sizes[i];
+				var addonOffset = 0;
+				while (size > 0) {
+					size -= 4;
+					addonOffset += 4 * 4;
+					++attributesOffset;
+				}
+			}
+			else {
+				++attributesOffset;
+			}
+		}
+		return attributesOffset;
+	}
+}

Kha/Backends/HTML5-Worker/kha/graphics4/VertexShader.hx

@@ -0,0 +1,27 @@
+package kha.graphics4;
+
+class VertexShader {
+	public var sources: Array<String>;
+	public var shader: Dynamic;
+	public var files: Array<String>;
+
+	public function new(sources: Array<Blob>, files: Array<String>) {
+		this.sources = [];
+		for (source in sources) {
+			this.sources.push(source.toString());
+		}
+		this.shader = null;
+		this.files = files;
+	}
+
+	public static function fromSource(source: String): VertexShader {
+		var shader = new VertexShader([], ["runtime-string"]);
+		shader.sources.push(source);
+		return shader;
+	}
+
+	public function delete(): Void {
+		shader = null;
+		sources = null;
+	}
+}

Kha/Backends/HTML5-Worker/kha/html5worker/ConstantLocation.hx

@@ -0,0 +1,11 @@
+package kha.html5worker;
+
+class ConstantLocation implements kha.graphics4.ConstantLocation {
+	static var lastId: Int = -1;
+
+	public var _id: Int;
+
+	public function new() {
+		_id = ++lastId;
+	}
+}

Kha/Backends/HTML5-Worker/kha/html5worker/Graphics.hx

@@ -0,0 +1,345 @@
+package kha.html5worker;
+
+import kha.arrays.Float32Array;
+import kha.Canvas;
+import kha.graphics4.IndexBuffer;
+import kha.graphics4.MipMapFilter;
+import kha.graphics4.PipelineState;
+import kha.graphics4.TextureAddressing;
+import kha.graphics4.TextureFilter;
+import kha.graphics4.Usage;
+import kha.graphics4.VertexBuffer;
+import kha.graphics4.VertexStructure;
+import kha.math.FastMatrix3;
+import kha.math.FastMatrix4;
+import kha.math.FastVector2;
+import kha.math.FastVector3;
+import kha.math.FastVector4;
+
+class Graphics implements kha.graphics4.Graphics {
+	var renderTarget: Image;
+
+	public function new(renderTarget: Canvas = null) {
+		if (Std.isOfType(renderTarget, Image)) {
+			this.renderTarget = cast renderTarget;
+		}
+	}
+
+	public function begin(additionalRenderTargets: Array<Canvas> = null): Void {
+		Worker.postMessage({command: 'begin', renderTarget: renderTarget == null ? -1 : renderTarget._rtid});
+	}
+
+	public function beginFace(face: Int): Void {}
+
+	public function beginEye(eye: Int): Void {}
+
+	public function end(): Void {
+		Worker.postMessage({command: 'end'});
+	}
+
+	public function flush(): Void {}
+
+	public function vsynced(): Bool {
+		return true;
+	}
+
+	public function refreshRate(): Int {
+		return 60;
+	}
+
+	public function clear(?color: Color, ?depth: Float, ?stencil: Int): Void {
+		Worker.postMessage({
+			command: 'clear',
+			color: color == null ? null : color.value,
+			hasDepth: depth != null,
+			depth: depth,
+			hasStencil: stencil != null,
+			stencil: stencil
+		});
+	}
+
+	public function viewport(x: Int, y: Int, width: Int, height: Int): Void {
+		Worker.postMessage({
+			command: 'viewport',
+			x: x,
+			y: y,
+			width: width,
+			height: height
+		});
+	}
+
+	public function createVertexBuffer(vertexCount: Int, structure: VertexStructure, usage: Usage, canRead: Bool = false): kha.graphics4.VertexBuffer {
+		return new VertexBuffer(vertexCount, structure, usage);
+	}
+
+	public function setVertexBuffer(vertexBuffer: kha.graphics4.VertexBuffer): Void {
+		Worker.postMessage({command: 'setVertexBuffer', id: vertexBuffer._id});
+	}
+
+	public function setVertexBuffers(vertexBuffers: Array<kha.graphics4.VertexBuffer>): Void {
+		var ids = new Array<Int>();
+		for (buffer in vertexBuffers) {
+			ids.push(buffer._id);
+		}
+		Worker.postMessage({command: 'setVertexBuffers', ids: ids});
+	}
+
+	public function createIndexBuffer(indexCount: Int, usage: Usage, canRead: Bool = false): kha.graphics4.IndexBuffer {
+		return new IndexBuffer(indexCount, usage);
+	}
+
+	public function setIndexBuffer(indexBuffer: kha.graphics4.IndexBuffer): Void {
+		Worker.postMessage({command: 'setIndexBuffer', id: indexBuffer._id});
+	}
+
+	public function setTexture(stage: kha.graphics4.TextureUnit, texture: kha.Image): Void {
+		Worker.postMessage({
+			command: 'setTexture',
+			stage: cast(stage, kha.html5worker.TextureUnit)._id,
+			texture: texture == null ? -1 : texture.id,
+			renderTarget: texture == null ? -1 : texture._rtid
+		});
+	}
+
+	public function setTextureDepth(stage: kha.graphics4.TextureUnit, texture: kha.Image): Void {}
+
+	public function setTextureArray(unit: kha.graphics4.TextureUnit, texture: kha.Image): Void {}
+
+	public function setVideoTexture(unit: kha.graphics4.TextureUnit, texture: kha.Video): Void {}
+
+	public function setImageTexture(unit: kha.graphics4.TextureUnit, texture: kha.Image): Void {}
+
+	public function setTextureParameters(texunit: kha.graphics4.TextureUnit, uAddressing: TextureAddressing, vAddressing: TextureAddressing,
+			minificationFilter: TextureFilter, magnificationFilter: TextureFilter, mipmapFilter: MipMapFilter): Void {
+		Worker.postMessage({
+			command: 'setTextureParameters',
+			id: cast(texunit, kha.html5worker.TextureUnit)._id,
+			uAddressing: uAddressing,
+			vAddressing: vAddressing,
+			minificationFilter: minificationFilter,
+			magnificationFilter: magnificationFilter,
+			mipmapFilter: mipmapFilter
+		});
+	}
+
+	public function setTexture3DParameters(texunit: kha.graphics4.TextureUnit, uAddressing: TextureAddressing, vAddressing: TextureAddressing,
+		wAddressing: TextureAddressing, minificationFilter: TextureFilter, magnificationFilter: TextureFilter, mipmapFilter: MipMapFilter): Void {}
+
+	public function setTextureCompareMode(texunit: kha.graphics4.TextureUnit, enabled: Bool): Void {}
+
+	public function setCubeMapCompareMode(texunit: kha.graphics4.TextureUnit, enabled: Bool): Void {}
+
+	public function setCubeMap(stage: kha.graphics4.TextureUnit, cubeMap: kha.graphics4.CubeMap): Void {}
+
+	public function setCubeMapDepth(stage: kha.graphics4.TextureUnit, cubeMap: kha.graphics4.CubeMap): Void {}
+
+	public function setPipeline(pipe: PipelineState): Void {
+		Worker.postMessage({command: 'setPipeline', id: pipe._id});
+	}
+
+	public function setStencilReferenceValue(value: Int): Void {}
+
+	public function setBool(location: kha.graphics4.ConstantLocation, value: Bool): Void {
+		Worker.postMessage({
+			command: 'setBool',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			value: value
+		});
+	}
+
+	public function setInt(location: kha.graphics4.ConstantLocation, value: Int): Void {
+		Worker.postMessage({
+			command: 'setInt',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			value: value
+		});
+	}
+
+	public function setInt2(location: kha.graphics4.ConstantLocation, value1: Int, value2: Int): Void {
+		Worker.postMessage({
+			command: 'setInt2',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			_0: value1,
+			_1: value2
+		});
+	}
+
+	public function setInt3(location: kha.graphics4.ConstantLocation, value1: Int, value2: Int, value3: Int): Void {
+		Worker.postMessage({
+			command: 'setInt3',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			_0: value1,
+			_1: value2,
+			_2: value3
+		});
+	}
+
+	public function setInt4(location: kha.graphics4.ConstantLocation, value1: Int, value2: Int, value3: Int, value4: Int): Void {
+		Worker.postMessage({
+			command: 'setInt4',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			_0: value1,
+			_1: value2,
+			_2: value3,
+			_3: value4
+		});
+	}
+
+	public function setInts(location: kha.graphics4.ConstantLocation, values: kha.arrays.Int32Array): Void {
+		Worker.postMessage({
+			command: 'setInts',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			values: values
+		});
+	}
+
+	public function setFloat(location: kha.graphics4.ConstantLocation, value: FastFloat): Void {
+		Worker.postMessage({
+			command: 'setFloat',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			value: value
+		});
+	}
+
+	public function setFloat2(location: kha.graphics4.ConstantLocation, value1: FastFloat, value2: FastFloat): Void {
+		Worker.postMessage({
+			command: 'setFloat2',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			_0: value1,
+			_1: value2
+		});
+	}
+
+	public function setFloat3(location: kha.graphics4.ConstantLocation, value1: FastFloat, value2: FastFloat, value3: FastFloat): Void {
+		Worker.postMessage({
+			command: 'setFloat3',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			_0: value1,
+			_1: value2,
+			_2: value3
+		});
+	}
+
+	public function setFloat4(location: kha.graphics4.ConstantLocation, value1: FastFloat, value2: FastFloat, value3: FastFloat, value4: FastFloat): Void {
+		Worker.postMessage({
+			command: 'setFloat4',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			_0: value1,
+			_1: value2,
+			_2: value3,
+			_3: value4
+		});
+	}
+
+	public function setFloats(location: kha.graphics4.ConstantLocation, values: Float32Array): Void {
+		Worker.postMessage({
+			command: 'setFloats',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			values: values
+		});
+	}
+
+	public function setVector2(location: kha.graphics4.ConstantLocation, value: FastVector2): Void {
+		Worker.postMessage({
+			command: 'setVector2',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			x: value.x,
+			y: value.y
+		});
+	}
+
+	public function setVector3(location: kha.graphics4.ConstantLocation, value: FastVector3): Void {
+		Worker.postMessage({
+			command: 'setVector3',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			x: value.x,
+			y: value.y,
+			z: value.z
+		});
+	}
+
+	public function setVector4(location: kha.graphics4.ConstantLocation, value: FastVector4): Void {
+		Worker.postMessage({
+			command: 'setVector4',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			x: value.x,
+			y: value.y,
+			z: value.z,
+			w: value.w
+		});
+	}
+
+	public inline function setMatrix(location: kha.graphics4.ConstantLocation, matrix: FastMatrix4): Void {
+		Worker.postMessage({
+			command: 'setMatrix4',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			_00: matrix._00,
+			_01: matrix._01,
+			_02: matrix._02,
+			_03: matrix._03,
+			_10: matrix._10,
+			_11: matrix._11,
+			_12: matrix._12,
+			_13: matrix._13,
+			_20: matrix._20,
+			_21: matrix._21,
+			_22: matrix._22,
+			_23: matrix._23,
+			_30: matrix._30,
+			_31: matrix._31,
+			_32: matrix._32,
+			_33: matrix._33
+		});
+	}
+
+	public inline function setMatrix3(location: kha.graphics4.ConstantLocation, matrix: FastMatrix3): Void {
+		Worker.postMessage({
+			command: 'setMatrix3',
+			location: cast(location, kha.html5worker.ConstantLocation)._id,
+			_00: matrix._00,
+			_01: matrix._01,
+			_02: matrix._02,
+			_10: matrix._10,
+			_11: matrix._11,
+			_12: matrix._12,
+			_20: matrix._20,
+			_21: matrix._21,
+			_22: matrix._22
+		});
+	}
+
+	public function drawIndexedVertices(start: Int = 0, count: Int = -1): Void {
+		Worker.postMessage({command: 'drawIndexedVertices', start: start, count: count});
+	}
+
+	public function scissor(x: Int, y: Int, width: Int, height: Int): Void {
+		Worker.postMessage({
+			command: 'scissor',
+			x: x,
+			y: y,
+			width: width,
+			height: height
+		});
+	}
+
+	public function disableScissor(): Void {
+		Worker.postMessage({command: 'disableScissor'});
+	}
+
+	public function drawIndexedVerticesInstanced(instanceCount: Int, start: Int = 0, count: Int = -1) {
+		Worker.postMessage({
+			command: 'drawIndexedVerticesInstanced',
+			instanceCount: instanceCount,
+			start: start,
+			count: count
+		});
+	}
+
+	public function instancedRenderingAvailable(): Bool {
+		return true;
+	}
+
+	public function maxBoundTextures(): Int {
+		return 16;
+	}
+}

Kha/Backends/HTML5-Worker/kha/html5worker/Sound.hx

@@ -0,0 +1,25 @@
+package kha.html5worker;
+
+import haxe.io.Bytes;
+import haxe.ds.Vector;
+
+class Sound extends kha.Sound {
+	public var _id: Int;
+	public var _callback: Void->Void;
+
+	public function new(id: Int) {
+		super();
+		this._id = id;
+	}
+
+	override public function uncompress(done: Void->Void): Void {
+		compressedData = null;
+		Worker.postMessage({command: 'uncompressSound', id: _id});
+		_callback = done;
+	}
+
+	override public function unload() {
+		compressedData = null;
+		uncompressedData = null;
+	}
+}

Kha/Backends/HTML5-Worker/kha/html5worker/TextureUnit.hx

@@ -0,0 +1,11 @@
+package kha.html5worker;
+
+class TextureUnit implements kha.graphics4.TextureUnit {
+	static var lastId: Int = -1;
+
+	public var _id: Int;
+
+	public function new() {
+		_id = ++lastId;
+	}
+}

Kha/Backends/HTML5/kha/Blob.hx

@@ -0,0 +1,3 @@
+package kha;
+
+typedef Blob = kha.internal.BytesBlob;

Kha/Backends/HTML5/kha/CanvasImage.hx

@@ -0,0 +1,234 @@
+package kha;
+
+import haxe.io.Bytes;
+import js.Browser;
+import js.lib.Uint8Array;
+import js.html.VideoElement;
+import js.html.webgl.GL;
+import kha.graphics4.TextureFormat;
+import kha.js.CanvasGraphics;
+
+class CanvasImage extends Image {
+	public var image: Dynamic;
+	public var video: VideoElement;
+
+	static var context: Dynamic;
+
+	var data: Dynamic;
+
+	var myWidth: Int;
+	var myHeight: Int;
+	var myFormat: TextureFormat;
+	var renderTarget: Bool;
+
+	public var frameBuffer: Dynamic;
+
+	var graphics1: kha.graphics1.Graphics;
+	var g2canvas: CanvasGraphics = null;
+
+	public static function init() {
+		var canvas: Dynamic = Browser.document.createElement("canvas");
+		if (canvas != null) {
+			context = canvas.getContext("2d");
+			canvas.width = 2048;
+			canvas.height = 2048;
+			context.globalCompositeOperation = "copy";
+		}
+	}
+
+	public function new(width: Int, height: Int, format: TextureFormat, renderTarget: Bool) {
+		myWidth = width;
+		myHeight = height;
+		myFormat = format;
+		this.renderTarget = renderTarget;
+		image = null;
+		video = null;
+		if (renderTarget)
+			createTexture();
+	}
+
+	override function get_g1(): kha.graphics1.Graphics {
+		if (graphics1 == null) {
+			graphics1 = new kha.graphics2.Graphics1(this);
+		}
+		return graphics1;
+	}
+
+	override function get_g2(): kha.graphics2.Graphics {
+		if (g2canvas == null) {
+			var canvas: Dynamic = Browser.document.createElement("canvas");
+			image = canvas;
+			var context = canvas.getContext("2d");
+			canvas.width = width;
+			canvas.height = height;
+			g2canvas = new CanvasGraphics(context);
+		}
+		return g2canvas;
+	}
+
+	override function get_g4(): kha.graphics4.Graphics {
+		return null;
+	}
+
+	override function get_width(): Int {
+		return myWidth;
+	}
+
+	override function get_height(): Int {
+		return myHeight;
+	}
+
+	override function get_format(): TextureFormat {
+		return myFormat;
+	}
+
+	override function get_realWidth(): Int {
+		return myWidth;
+	}
+
+	override function get_realHeight(): Int {
+		return myHeight;
+	}
+
+	override function get_stride(): Int {
+		return myFormat == TextureFormat.RGBA32 ? 4 * width : width;
+	}
+
+	override public function isOpaque(x: Int, y: Int): Bool {
+		if (data == null) {
+			if (context == null)
+				return true;
+			else
+				createImageData();
+		}
+		return (data.data[y * Std.int(image.width) * 4 + x * 4 + 3] != 0);
+	}
+
+	override public function at(x: Int, y: Int): Color {
+		if (data == null) {
+			if (context == null)
+				return Color.Black;
+			else
+				createImageData();
+		}
+
+		var r = data.data[y * Std.int(image.width) * 4 + x * 4];
+		var g = data.data[y * Std.int(image.width) * 4 + x * 4 + 1];
+		var b = data.data[y * Std.int(image.width) * 4 + x * 4 + 2];
+		var a = data.data[y * Std.int(image.width) * 4 + x * 4 + 3];
+
+		return Color.fromValue((a << 24) | (r << 16) | (g << 8) | b);
+	}
+
+	function createImageData() {
+		context.strokeStyle = "rgba(0,0,0,0)";
+		context.fillStyle = "rgba(0,0,0,0)";
+		context.fillRect(0, 0, image.width, image.height);
+		context.drawImage(image, 0, 0, image.width, image.height, 0, 0, image.width, image.height);
+		data = context.getImageData(0, 0, image.width, image.height);
+	}
+
+	var texture: Dynamic;
+
+	static function upperPowerOfTwo(v: Int): Int {
+		v--;
+		v |= v >>> 1;
+		v |= v >>> 2;
+		v |= v >>> 4;
+		v |= v >>> 8;
+		v |= v >>> 16;
+		v++;
+		return v;
+	}
+
+	public function createTexture() {
+		if (SystemImpl.gl == null)
+			return;
+		texture = SystemImpl.gl.createTexture();
+		// texture.image = image;
+		SystemImpl.gl.bindTexture(GL.TEXTURE_2D, texture);
+		// Sys.gl.pixelStorei(Sys.gl.UNPACK_FLIP_Y_WEBGL, true);
+
+		SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.LINEAR);
+		SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR);
+		SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+		SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+		if (renderTarget) {
+			frameBuffer = SystemImpl.gl.createFramebuffer();
+			SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+			SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, realWidth, realHeight, 0, GL.RGBA, GL.UNSIGNED_BYTE, null);
+			SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, GL.COLOR_ATTACHMENT0, GL.TEXTURE_2D, texture, 0);
+			SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, null);
+		}
+		else if (video != null)
+			SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, GL.RGBA, GL.UNSIGNED_BYTE, video);
+		else
+			SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, GL.RGBA, GL.UNSIGNED_BYTE, image);
+		// Sys.gl.generateMipmap(Sys.gl.TEXTURE_2D);
+		SystemImpl.gl.bindTexture(GL.TEXTURE_2D, null);
+	}
+
+	public function set(stage: Int): Void {
+		SystemImpl.gl.activeTexture(GL.TEXTURE0 + stage);
+		SystemImpl.gl.bindTexture(GL.TEXTURE_2D, texture);
+		if (video != null)
+			SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, GL.RGBA, GL.UNSIGNED_BYTE, video);
+	}
+
+	public var bytes: Bytes;
+
+	override public function lock(level: Int = 0): Bytes {
+		bytes = Bytes.alloc(myFormat == TextureFormat.RGBA32 ? 4 * width * height : width * height);
+		return bytes;
+	}
+
+	override public function unlock(): Void {
+		data = null;
+
+		if (SystemImpl.gl != null) {
+			texture = SystemImpl.gl.createTexture();
+			// texture.image = image;
+			SystemImpl.gl.bindTexture(GL.TEXTURE_2D, texture);
+			// Sys.gl.pixelStorei(Sys.gl.UNPACK_FLIP_Y_WEBGL, true);
+
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.LINEAR);
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR);
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+			SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.LUMINANCE, width, height, 0, GL.LUMINANCE, GL.UNSIGNED_BYTE, new Uint8Array(bytes.getData()));
+
+			if (SystemImpl.ie && SystemImpl.gl.getError() == 1282) { // no LUMINANCE support in IE11
+				var rgbaBytes = Bytes.alloc(width * height * 4);
+				for (y in 0...height)
+					for (x in 0...width) {
+						var value = bytes.get(y * width + x);
+						rgbaBytes.set(y * width * 4 + x * 4 + 0, value);
+						rgbaBytes.set(y * width * 4 + x * 4 + 1, value);
+						rgbaBytes.set(y * width * 4 + x * 4 + 2, value);
+						rgbaBytes.set(y * width * 4 + x * 4 + 3, 255);
+					}
+				SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, width, height, 0, GL.RGBA, GL.UNSIGNED_BYTE, new Uint8Array(rgbaBytes.getData()));
+			}
+
+			// Sys.gl.generateMipmap(Sys.gl.TEXTURE_2D);
+			SystemImpl.gl.bindTexture(GL.TEXTURE_2D, null);
+			bytes = null;
+		}
+	}
+
+	override public function getPixels(): Bytes {
+		@:privateAccess var context: js.html.CanvasRenderingContext2D = g2canvas.canvas;
+		var imageData: js.html.ImageData = context.getImageData(0, 0, width, height);
+		var bytes = Bytes.alloc(imageData.data.length);
+		for (i in 0...imageData.data.length) {
+			bytes.set(i, imageData.data[i]);
+		}
+		return bytes;
+	}
+
+	override public function unload(): Void {
+		image = null;
+		video = null;
+		data = null;
+	}
+}

Kha/Backends/HTML5/kha/Display.hx

@@ -0,0 +1,86 @@
+package kha;
+
+import js.Browser;
+
+class Display {
+	static var instance: Display = new Display();
+
+	function new() {}
+
+	public static function init(): Void {}
+
+	public static var primary(get, never): Display;
+
+	static function get_primary(): Display {
+		return instance;
+	}
+
+	public static var all(get, never): Array<Display>;
+
+	static function get_all(): Array<Display> {
+		return [primary];
+	}
+
+	public var available(get, never): Bool;
+
+	function get_available(): Bool {
+		return true;
+	}
+
+	public var name(get, never): String;
+
+	function get_name(): String {
+		return "Display";
+	}
+
+	public var x(get, never): Int;
+
+	function get_x(): Int {
+		return js.Browser.window.screen.left;
+	}
+
+	public var y(get, never): Int;
+
+	function get_y(): Int {
+		return js.Browser.window.screen.top;
+	}
+
+	public var width(get, never): Int;
+
+	function get_width(): Int {
+		return js.Browser.window.screen.width;
+	}
+
+	public var height(get, never): Int;
+
+	function get_height(): Int {
+		return js.Browser.window.screen.height;
+	}
+
+	public var frequency(get, never): Int;
+
+	function get_frequency(): Int {
+		return SystemImpl.estimatedRefreshRate;
+	}
+
+	public var pixelsPerInch(get, never): Int;
+
+	function get_pixelsPerInch(): Int {
+		var dpiElement = Browser.document.createElement("div");
+		dpiElement.style.position = "absolute";
+		dpiElement.style.width = "1in";
+		dpiElement.style.height = "1in";
+		dpiElement.style.left = "-100%";
+		dpiElement.style.top = "-100%";
+		Browser.document.body.appendChild(dpiElement);
+		var dpi: Int = dpiElement.offsetHeight;
+		dpiElement.remove();
+		return dpi;
+	}
+
+	public var modes(get, never): Array<DisplayMode>;
+
+	function get_modes(): Array<DisplayMode> {
+		return [];
+	}
+}

Kha/Backends/HTML5/kha/EnvironmentVariables.hx

@@ -0,0 +1,24 @@
+package kha;
+
+import js.Browser;
+
+class EnvironmentVariables {
+	public static function get(name: String): String {
+		try {
+			var query = Browser.location.href.substr(Browser.location.href.indexOf("?") + 1);
+			var parts = query.split("&");
+
+			for (part in parts) {
+				var subparts = part.split("=");
+				if (subparts[0] == name) {
+					return subparts[1];
+				}
+			}
+
+			return null;
+		}
+		catch (error:Dynamic) {
+			return null;
+		}
+	}
+}

Kha/Backends/HTML5/kha/Font.hx

@@ -0,0 +1,3 @@
+package kha;
+
+typedef Font = kha.Kravur;

Kha/Backends/HTML5/kha/Image.hx

@@ -0,0 +1,221 @@
+package kha;
+
+import haxe.io.Bytes;
+import js.html.ImageElement;
+import js.html.CanvasElement;
+import js.html.webgl.GL;
+import kha.graphics4.TextureFormat;
+import kha.graphics4.DepthStencilFormat;
+import kha.graphics4.Usage;
+
+class Image implements Canvas implements Resource {
+	public static function create(width: Int, height: Int, format: TextureFormat = null, usage: Usage = null, readable: Bool = false): Image {
+		if (format == null)
+			format = TextureFormat.RGBA32;
+		if (usage == null)
+			usage = Usage.StaticUsage;
+		if (SystemImpl.gl == null)
+			return new CanvasImage(width, height, format, false);
+		else
+			return new WebGLImage(width, height, format, false, DepthStencilFormat.NoDepthAndStencil, 1, readable);
+	}
+
+	public static function create3D(width: Int, height: Int, depth: Int, format: TextureFormat = null, usage: Usage = null, readable: Bool = false): Image {
+		return null;
+	}
+
+	public static function createRenderTarget(width: Int, height: Int, format: TextureFormat = null,
+			depthStencil: DepthStencilFormat = DepthStencilFormat.NoDepthAndStencil, antiAliasingSamples: Int = 1): Image {
+		if (format == null)
+			format = TextureFormat.RGBA32;
+		if (SystemImpl.gl == null)
+			return new CanvasImage(width, height, format, true);
+		else
+			return new WebGLImage(width, height, format, true, depthStencil, antiAliasingSamples, false);
+	}
+
+	public static function fromCanvas(canvas: CanvasElement): Image {
+		if (SystemImpl.gl == null) {
+			var img = new CanvasImage(canvas.width, canvas.height, TextureFormat.RGBA32, false);
+			img.image = canvas;
+			img.createTexture();
+			return img;
+		}
+		else {
+			var img = new WebGLImage(canvas.width, canvas.height, TextureFormat.RGBA32, false, DepthStencilFormat.NoDepthAndStencil, 1, false);
+			img.image = canvas;
+			img.createTexture();
+			return img;
+		}
+	}
+
+	public static function fromImage(image: ImageElement, readable: Bool): Image {
+		if (SystemImpl.gl == null) {
+			var img = new CanvasImage(image.width, image.height, TextureFormat.RGBA32, false);
+			img.image = image;
+			img.createTexture();
+			return img;
+		}
+		else {
+			var img = new WebGLImage(image.width, image.height, TextureFormat.RGBA32, false, DepthStencilFormat.NoDepthAndStencil, 1, readable);
+			img.image = image;
+			img.createTexture();
+			return img;
+		}
+	}
+
+	public static function fromBytes(bytes: Bytes, width: Int, height: Int, format: TextureFormat = null, usage: Usage = null, readable: Bool = false): Image {
+		if (format == null)
+			format = TextureFormat.RGBA32;
+		if (usage == null)
+			usage = Usage.StaticUsage;
+		if (SystemImpl.gl != null) {
+			var img = new WebGLImage(width, height, format, false, DepthStencilFormat.NoDepthAndStencil, 1, readable);
+			img.image = img.bytesToArray(bytes);
+			img.createTexture();
+			return img;
+		}
+		var img = new CanvasImage(width, height, format, false);
+		var g2: kha.js.CanvasGraphics = cast img.g2;
+		@:privateAccess var canvas = g2.canvas;
+		var imageData = new js.html.ImageData(new js.lib.Uint8ClampedArray(bytes.getData()), width, height);
+		canvas.putImageData(imageData, 0, 0);
+		return img;
+	}
+
+	public static function fromBytes3D(bytes: Bytes, width: Int, height: Int, depth: Int, format: TextureFormat = null, usage: Usage = null,
+			readable: Bool = false): Image {
+		return null;
+	}
+
+	public static function fromEncodedBytes(bytes: Bytes, fileExtention: String, doneCallback: Image->Void, errorCallback: String->Void,
+			readable: Bool = false): Void {
+		var dataUrl = "data:image;base64," + haxe.crypto.Base64.encode(bytes);
+		var imageElement = cast(js.Browser.document.createElement("img"), ImageElement);
+		imageElement.onload = function() doneCallback(fromImage(imageElement, readable));
+		imageElement.onerror = function() errorCallback("Image was not created");
+		imageElement.src = dataUrl;
+	}
+
+	public static function fromVideo(video: kha.Video): Image {
+		final jsvideo: kha.js.Video = cast video;
+
+		if (SystemImpl.gl == null) {
+			var img = new CanvasImage(jsvideo.element.videoWidth, jsvideo.element.videoHeight, TextureFormat.RGBA32, false);
+			img.video = jsvideo.element;
+			img.createTexture();
+			return img;
+		}
+		else {
+			var img = new WebGLImage(jsvideo.element.videoWidth, jsvideo.element.videoHeight, TextureFormat.RGBA32, false,
+				DepthStencilFormat.NoDepthAndStencil, 1, false);
+			img.video = jsvideo.element;
+			img.createTexture();
+			return img;
+		}
+	}
+
+	public static var maxSize(get, never): Int;
+
+	static function get_maxSize(): Int {
+		return SystemImpl.gl == null ? 1024 * 8 : SystemImpl.gl.getParameter(GL.MAX_TEXTURE_SIZE);
+	}
+
+	public static var nonPow2Supported(get, never): Bool;
+
+	static function get_nonPow2Supported(): Bool {
+		return SystemImpl.gl != null;
+	}
+
+	public static function renderTargetsInvertedY(): Bool {
+		return true;
+	}
+
+	public function isOpaque(x: Int, y: Int): Bool {
+		return false;
+	}
+
+	public function at(x: Int, y: Int): Color {
+		return Color.Black;
+	}
+
+	public function unload(): Void {}
+
+	public function lock(level: Int = 0): Bytes {
+		return null;
+	}
+
+	public function unlock(): Void {}
+
+	public function getPixels(): Bytes {
+		return null;
+	}
+
+	public function generateMipmaps(levels: Int): Void {}
+
+	public function setMipmaps(mipmaps: Array<Image>): Void {}
+
+	public function setDepthStencilFrom(image: Image): Void {}
+
+	public function clear(x: Int, y: Int, z: Int, width: Int, height: Int, depth: Int, color: Color): Void {}
+
+	public var width(get, never): Int;
+
+	function get_width(): Int {
+		return 0;
+	}
+
+	public var height(get, never): Int;
+
+	function get_height(): Int {
+		return 0;
+	}
+
+	public var depth(get, never): Int;
+
+	function get_depth(): Int {
+		return 1;
+	}
+
+	public var format(get, never): TextureFormat;
+
+	function get_format(): TextureFormat {
+		return TextureFormat.RGBA32;
+	}
+
+	public var realWidth(get, never): Int;
+
+	function get_realWidth(): Int {
+		return 0;
+	}
+
+	public var realHeight(get, never): Int;
+
+	function get_realHeight(): Int {
+		return 0;
+	}
+
+	public var stride(get, never): Int;
+
+	function get_stride(): Int {
+		return 0;
+	}
+
+	public var g1(get, never): kha.graphics1.Graphics;
+
+	function get_g1(): kha.graphics1.Graphics {
+		return null;
+	}
+
+	public var g2(get, never): kha.graphics2.Graphics;
+
+	function get_g2(): kha.graphics2.Graphics {
+		return null;
+	}
+
+	public var g4(get, never): kha.graphics4.Graphics;
+
+	function get_g4(): kha.graphics4.Graphics {
+		return null;
+	}
+}

Kha/Backends/HTML5/kha/LoaderImpl.hx

@@ -0,0 +1,236 @@
+package kha;
+
+import js.html.FileReader;
+import js.Syntax;
+import js.Browser;
+import js.html.ImageElement;
+import js.html.XMLHttpRequest;
+import haxe.io.Bytes;
+import kha.Blob;
+import kha.js.WebAudioSound;
+import kha.js.MobileWebAudioSound;
+import kha.graphics4.TextureFormat;
+import kha.graphics4.Usage;
+
+using StringTools;
+
+class LoaderImpl {
+	@:allow(kha.SystemImpl)
+	static var dropFiles = new Map<String, js.html.File>();
+
+	public static function getImageFormats(): Array<String> {
+		return ["png", "jpg", "hdr"];
+	}
+
+	public static function loadImageFromDescription(desc: Dynamic, done: kha.Image->Void, failed: AssetError->Void) {
+		var readable = Reflect.hasField(desc, "readable") ? desc.readable : false;
+		if (StringTools.endsWith(desc.files[0], ".hdr")) {
+			loadBlobFromDescription(desc, function(blob) {
+				var hdrImage = kha.internal.HdrFormat.parse(blob.toBytes());
+				done(Image.fromBytes(hdrImage.data.view.buffer, hdrImage.width, hdrImage.height, TextureFormat.RGBA128,
+					readable ? Usage.DynamicUsage : Usage.StaticUsage));
+			}, failed);
+		}
+		else {
+			var img: ImageElement = cast Browser.document.createElement("img");
+			img.onerror = function(event: Dynamic) failed({url: desc.files[0], error: event});
+			img.onload = function(event: Dynamic) done(Image.fromImage(img, readable));
+			img.crossOrigin = "";
+			img.src = desc.files[0];
+		}
+	}
+
+	public static function getSoundFormats(): Array<String> {
+		var element = Browser.document.createAudioElement();
+		var formats = new Array<String>();
+		#if !kha_debug_html5
+		if (element.canPlayType("audio/mp4") != "")
+			formats.push("mp4");
+		if (element.canPlayType("audio/mp3") != "")
+			formats.push("mp3");
+		if (element.canPlayType("audio/wav") != "")
+			formats.push("wav");
+		#end
+		if (SystemImpl._hasWebAudio || element.canPlayType("audio/ogg") != "")
+			formats.push("ogg");
+		return formats;
+	}
+
+	public static function loadSoundFromDescription(desc: Dynamic, done: kha.Sound->Void, failed: AssetError->Void) {
+		if (SystemImpl._hasWebAudio) {
+			#if !kha_debug_html5
+			var element = Browser.document.createAudioElement();
+			if (element.canPlayType("audio/mp4") != "") {
+				for (i in 0...desc.files.length) {
+					var file: String = desc.files[i];
+					if (file.endsWith(".mp4")) {
+						new WebAudioSound(file, done, failed);
+						return;
+					}
+				}
+			}
+			if (element.canPlayType("audio/mp3") != "") {
+				for (i in 0...desc.files.length) {
+					var file: String = desc.files[i];
+					if (file.endsWith(".mp3")) {
+						new WebAudioSound(file, done, failed);
+						return;
+					}
+				}
+			}
+			if (element.canPlayType("audio/wav") != "") {
+				for (i in 0...desc.files.length) {
+					var file: String = desc.files[i];
+					if (file.endsWith(".wav")) {
+						new WebAudioSound(file, done, failed);
+						return;
+					}
+				}
+			}
+			#end
+			for (i in 0...desc.files.length) {
+				var file: String = desc.files[i];
+				if (file.endsWith(".ogg")) {
+					new WebAudioSound(file, done, failed);
+					return;
+				}
+			}
+			failed({
+				url: desc.files.join(","),
+				error: "Unable to find sound files with supported audio formats",
+			});
+		}
+		else if (SystemImpl.mobile) {
+			var element = Browser.document.createAudioElement();
+			if (element.canPlayType("audio/mp4") != "") {
+				for (i in 0...desc.files.length) {
+					var file: String = desc.files[i];
+					if (file.endsWith(".mp4")) {
+						new MobileWebAudioSound(file, done, failed);
+						return;
+					}
+				}
+			}
+			if (element.canPlayType("audio/mp3") != "") {
+				for (i in 0...desc.files.length) {
+					var file: String = desc.files[i];
+					if (file.endsWith(".mp3")) {
+						new MobileWebAudioSound(file, done, failed);
+						return;
+					}
+				}
+			}
+			if (element.canPlayType("audio/wav") != "") {
+				for (i in 0...desc.files.length) {
+					var file: String = desc.files[i];
+					if (file.endsWith(".wav")) {
+						new MobileWebAudioSound(file, done, failed);
+						return;
+					}
+				}
+			}
+			for (i in 0...desc.files.length) {
+				var file: String = desc.files[i];
+				if (file.endsWith(".ogg")) {
+					new MobileWebAudioSound(file, done, failed);
+					return;
+				}
+			}
+			failed({
+				url: desc.files.join(","),
+				error: "Unable to find sound files with supported audio formats",
+			});
+		}
+		else {
+			new kha.js.Sound(desc.files, done, failed);
+		}
+	}
+
+	public static function getVideoFormats(): Array<String> {
+		#if kha_debug_html5
+		return ["webm"];
+		#else
+		return ["mp4", "webm"];
+		#end
+	}
+
+	public static function loadVideoFromDescription(desc: Dynamic, done: kha.Video->Void, failed: AssetError->Void): Void {
+		kha.js.Video.fromFile(desc.files, done);
+	}
+
+	public static function loadRemote(desc: Dynamic, done: Blob->Void, failed: AssetError->Void) {
+		var request = untyped new XMLHttpRequest();
+		request.open("GET", desc.files[0], true);
+		request.responseType = "arraybuffer";
+
+		request.onreadystatechange = function() {
+			if (request.readyState != 4)
+				return;
+			if ((request.status >= 200 && request.status < 400)
+				|| (request.status == 0 && request.statusText == "")) { // Blobs loaded using --allow-file-access-from-files
+				var bytes: Bytes = null;
+				var arrayBuffer = request.response;
+				if (arrayBuffer != null) {
+					var byteArray: Dynamic = Syntax.code("new Uint8Array(arrayBuffer)");
+					bytes = Bytes.ofData(byteArray);
+				}
+				else if (request.responseBody != null) {
+					var data: Dynamic = untyped Syntax.code("VBArray(request.responseBody).toArray()");
+					bytes = Bytes.alloc(data.length);
+					for (i in 0...data.length)
+						bytes.set(i, data[i]);
+				}
+				else {
+					failed({url: desc.files[0]});
+					return;
+				}
+
+				done(new Blob(bytes));
+			}
+			else {
+				failed({url: desc.files[0]});
+			}
+		}
+		request.send(null);
+	}
+
+	public static function loadBlobFromDescription(desc: Dynamic, done: Blob->Void, failed: AssetError->Void) {
+		#if kha_debug_html5
+		var file: String = desc.files[0];
+
+		if (file.startsWith("http://") || file.startsWith("https://")) {
+			loadRemote(desc, done, failed);
+		}
+		else if (file.startsWith("drop://")) {
+			var dropFile = dropFiles.get(file.substring(7));
+			if (dropFile == null)
+				failed({url: file, error: 'file not found'});
+			else {
+				var reader = new FileReader();
+				reader.onloadend = () -> {
+					done(new Blob(Bytes.ofData(reader.result)));
+				};
+				reader.onerror = () -> failed({url: file, error: reader.error});
+				reader.readAsArrayBuffer(dropFile);
+			}
+		}
+		else {
+			var loadBlob = Syntax.code("window.electron.loadBlob");
+			loadBlob(desc, (byteArray: Dynamic) -> {
+				var bytes = Bytes.alloc(byteArray.byteLength);
+				for (i in 0...byteArray.byteLength)
+					bytes.set(i, byteArray[i]);
+				done(new Blob(bytes));
+			}, failed);
+		}
+		#else
+		loadRemote(desc, done, failed);
+		#end
+	}
+
+	public static function loadFontFromDescription(desc: Dynamic, done: Font->Void, failed: AssetError->Void): Void {
+		loadBlobFromDescription(desc, function(blob: Blob) {
+			done(new Font(blob));
+		}, failed);
+	}
+}

Kha/Backends/HTML5/kha/Macros.hx

@@ -0,0 +1,13 @@
+package kha;
+
+import haxe.macro.Context;
+import haxe.macro.Expr;
+
+class Macros {
+	public static macro function canvasId(): Expr {
+		return {
+			expr: EConst(CString(Context.getDefines().get("canvas_id"))),
+			pos: Context.currentPos()
+		};
+	}
+}

Kha/Backends/HTML5/kha/Storage.hx

@@ -0,0 +1,102 @@
+package kha;
+
+import haxe.io.Bytes;
+import haxe.io.BytesBuffer;
+import haxe.io.BytesData;
+import js.Browser;
+
+using StringTools;
+
+class LocalStorageFile extends StorageFile {
+	var name: String;
+
+	public function new(name: String) {
+		this.name = name;
+	}
+
+	override public function read(): Blob {
+		var storage = Browser.getLocalStorage();
+		if (storage == null)
+			return null;
+		var value: String = storage.getItem(System.title + "_" + name);
+		if (value == null)
+			return null;
+		else
+			return Blob.fromBytes(decode(value));
+	}
+
+	override public function write(data: Blob): Void {
+		var storage = Browser.getLocalStorage();
+		if (storage == null)
+			return;
+		storage.setItem(System.title + "_" + name, encode(data.bytes.getData()));
+	}
+
+	/**
+	 * Encodes byte array to yEnc string (from SASStore).
+	 * @param  {Array}  source Byte array to convert to yEnc.
+	 * @return {string}        Resulting yEnc string from byte array.
+	 */
+	static function encode(source: BytesData): String {
+		var reserved = [0, 10, 13, 61];
+		var output = "";
+		var converted, ele;
+		var bytes = new js.lib.Uint8Array(source);
+		for (i in 0...bytes.length) {
+			ele = bytes[i];
+			converted = (ele + 42) % 256;
+			if (!Lambda.has(reserved, converted)) {
+				output += String.fromCharCode(converted);
+			}
+			else {
+				converted = (converted + 64) % 256;
+				output += "=" + String.fromCharCode(converted);
+			}
+		}
+		return output;
+	}
+
+	/**
+	 * Decodes yEnc string to byte array (from SASStore).
+	 * @param  {string} source yEnc string to decode to byte array.
+	 * @return {Array}         Resulting byte array from yEnc string.
+	 */
+	static function decode(source: String): Bytes {
+		var output = new BytesBuffer();
+		var ck = false;
+		var c;
+		for (i in 0...source.length) {
+			c = source.fastCodeAt(i);
+			// ignore newlines
+			if (c == 13 || c == 10) {
+				continue;
+			}
+			// if we're an "=" and we haven't been flagged, set flag
+			if (c == 61 && !ck) {
+				ck = true;
+				continue;
+			}
+			if (ck) {
+				ck = false;
+				c = c - 64;
+			}
+			if (c < 42 && c > 0) {
+				output.addByte(c + 214);
+			}
+			else {
+				output.addByte(c - 42);
+			}
+		}
+		return output.getBytes();
+	}
+}
+
+class Storage {
+	public static function namedFile(name: String): StorageFile {
+		return new LocalStorageFile(name);
+	}
+
+	public static function defaultFile(): StorageFile {
+		return namedFile("default.kha");
+	}
+}

Kha/Backends/HTML5/kha/WebGLImage.hx

@@ -0,0 +1,584 @@
+package kha;
+
+import haxe.io.Bytes;
+import js.Browser;
+import js.lib.Uint8Array;
+import js.lib.Uint16Array;
+import js.lib.Float32Array;
+import js.html.VideoElement;
+import js.html.webgl.GL;
+import js.html.webgl.Framebuffer;
+import js.html.webgl.Renderbuffer;
+import js.html.webgl.Texture;
+import kha.graphics4.TextureFormat;
+import kha.graphics4.DepthStencilFormat;
+import kha.js.graphics4.Graphics;
+
+class WebGLImage extends Image {
+	public var image: Dynamic;
+	public var video: VideoElement;
+
+	static var context: js.html.CanvasRenderingContext2D;
+
+	var data: js.html.ImageData;
+
+	var myWidth: Int;
+	var myHeight: Int;
+	var myFormat: TextureFormat;
+	var renderTarget: Bool;
+	var samples: Int;
+
+	public var frameBuffer: Framebuffer = null;
+	public var renderBuffer: Renderbuffer = null;
+	public var texture: Texture = null;
+	public var depthTexture: Texture = null;
+	public var MSAAFrameBuffer: Framebuffer = null;
+
+	var MSAAColorBuffer: Renderbuffer;
+	var MSAADepthBuffer: Renderbuffer;
+
+	var graphics1: kha.graphics1.Graphics;
+	var graphics2: kha.graphics2.Graphics;
+	var graphics4: kha.graphics4.Graphics;
+
+	var depthStencilFormat: DepthStencilFormat;
+
+	var readable: Bool;
+
+	// WebGL2 constants
+	static inline var GL_RGBA16F = 0x881A;
+	static inline var GL_RGBA32F = 0x8814;
+	static inline var GL_R16F = 0x822D;
+	static inline var GL_R32F = 0x822E;
+	static inline var GL_RED = 0x1903;
+	static inline var GL_DEPTH_COMPONENT24 = 0x81A6;
+	static inline var GL_DEPTH24_STENCIL8 = 0x88F0;
+	static inline var GL_DEPTH32F_STENCIL8 = 0x8CAD;
+
+	static var canvas: js.html.CanvasElement;
+
+	public static function init() {
+		if (context == null) {
+			// create only once
+			canvas = Browser.document.createCanvasElement();
+			if (canvas != null) {
+				context = canvas.getContext("2d");
+				canvas.width = 4096;
+				canvas.height = 4096;
+				context.globalCompositeOperation = "copy";
+			}
+		}
+	}
+
+	public function new(width: Int, height: Int, format: TextureFormat, renderTarget: Bool, depthStencilFormat: DepthStencilFormat, samples: Int,
+			readable: Bool) {
+		myWidth = width;
+		myHeight = height;
+		myFormat = format;
+		this.renderTarget = renderTarget;
+		this.samples = samples;
+		this.readable = readable;
+		image = null;
+		video = null;
+		this.depthStencilFormat = depthStencilFormat;
+		init();
+		if (renderTarget)
+			createTexture();
+	}
+
+	override function get_g1(): kha.graphics1.Graphics {
+		if (graphics1 == null) {
+			graphics1 = new kha.graphics2.Graphics1(this);
+		}
+		return graphics1;
+	}
+
+	override function get_g2(): kha.graphics2.Graphics {
+		if (graphics2 == null) {
+			graphics2 = new kha.js.graphics4.Graphics2(this);
+		}
+		return graphics2;
+	}
+
+	override function get_g4(): kha.graphics4.Graphics {
+		if (graphics4 == null) {
+			graphics4 = new Graphics(this);
+		}
+		return graphics4;
+	}
+
+	override function get_width(): Int {
+		return myWidth;
+	}
+
+	override function get_height(): Int {
+		return myHeight;
+	}
+
+	override function get_format(): TextureFormat {
+		return myFormat;
+	}
+
+	override function get_realWidth(): Int {
+		return myWidth;
+	}
+
+	override function get_realHeight(): Int {
+		return myHeight;
+	}
+
+	override function get_stride(): Int {
+		return formatByteSize(myFormat) * width;
+	}
+
+	override public function isOpaque(x: Int, y: Int): Bool {
+		if (data == null) {
+			if (context == null)
+				return true;
+			else
+				createImageData();
+		}
+		return (data.data[y * Std.int(image.width) * 4 + x * 4 + 3] != 0);
+	}
+
+	override public function at(x: Int, y: Int): Color {
+		if (bytes != null) {
+			var r = bytes.get(y * width * 4 + x * 4);
+			var g = bytes.get(y * width * 4 + x * 4 + 1);
+			var b = bytes.get(y * width * 4 + x * 4 + 2);
+			var a = bytes.get(y * width * 4 + x * 4 + 3);
+
+			return Color.fromValue((a << 24) | (r << 16) | (g << 8) | b);
+		}
+		else {
+			if (data == null) {
+				if (context == null)
+					return Color.Black;
+				else
+					createImageData();
+			}
+
+			var r = data.data[y * width * 4 + x * 4];
+			var g = data.data[y * width * 4 + x * 4 + 1];
+			var b = data.data[y * width * 4 + x * 4 + 2];
+			var a = data.data[y * width * 4 + x * 4 + 3];
+
+			return Color.fromValue((a << 24) | (r << 16) | (g << 8) | b);
+		}
+	}
+
+	function createImageData() {
+		if (Std.isOfType(image, Uint8Array)) {
+			data = new js.html.ImageData(new js.lib.Uint8ClampedArray(image.buffer), this.width, this.height);
+		}
+		else {
+			if (this.width > canvas.width || this.height > canvas.height) {
+				var cw = canvas.width;
+				var ch = canvas.height;
+				while (this.width > cw || this.height > ch) {
+					cw *= 2;
+					ch *= 2;
+				}
+				canvas.width = cw;
+				canvas.height = ch;
+			}
+			context.strokeStyle = "rgba(0,0,0,0)";
+			context.fillStyle = "rgba(0,0,0,0)";
+			context.fillRect(0, 0, image.width, image.height);
+			context.drawImage(image, 0, 0, image.width, image.height, 0, 0, image.width, image.height);
+			data = context.getImageData(0, 0, image.width, image.height);
+		}
+	}
+
+	static function upperPowerOfTwo(v: Int): Int {
+		v--;
+		v |= v >>> 1;
+		v |= v >>> 2;
+		v |= v >>> 4;
+		v |= v >>> 8;
+		v |= v >>> 16;
+		v++;
+		return v;
+	}
+
+	public function createTexture(): Void {
+		if (SystemImpl.gl == null)
+			return;
+		texture = SystemImpl.gl.createTexture();
+		// texture.image = image;
+		SystemImpl.gl.bindTexture(GL.TEXTURE_2D, texture);
+		// Sys.gl.pixelStorei(Sys.gl.UNPACK_FLIP_Y_WEBGL, true);
+
+		SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.LINEAR);
+		SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR);
+		SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+		SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+		if (renderTarget) {
+			frameBuffer = SystemImpl.gl.createFramebuffer();
+			SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+			switch (myFormat) {
+				case DEPTH16:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL.DEPTH_COMPONENT16 : GL.DEPTH_COMPONENT, realWidth, realHeight, 0,
+						GL.DEPTH_COMPONENT, GL.UNSIGNED_SHORT, null);
+				case RGBA128:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_RGBA32F : GL.RGBA, realWidth, realHeight, 0, GL.RGBA, GL.FLOAT, null);
+				case RGBA64:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_RGBA16F : GL.RGBA, realWidth, realHeight, 0, GL.RGBA,
+						SystemImpl.halfFloat.HALF_FLOAT_OES, null);
+				case RGBA32:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, realWidth, realHeight, 0, GL.RGBA, GL.UNSIGNED_BYTE, null);
+				case A32:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_R32F : GL.ALPHA, realWidth, realHeight, 0,
+						SystemImpl.gl2 ? GL_RED : GL.ALPHA, GL.FLOAT, null);
+				case A16:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_R16F : GL.ALPHA, realWidth, realHeight, 0,
+						SystemImpl.gl2 ? GL_RED : GL.ALPHA, SystemImpl.halfFloat.HALF_FLOAT_OES, null);
+				default:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, realWidth, realHeight, 0, GL.RGBA, GL.UNSIGNED_BYTE, null);
+			}
+
+			if (myFormat == DEPTH16) {
+				SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.NEAREST);
+				SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.NEAREST);
+				SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, GL.DEPTH_ATTACHMENT, GL.TEXTURE_2D, texture, 0);
+				// Some WebGL implementations throw incomplete framebuffer error, create color attachment
+				if (!SystemImpl.gl2) {
+					var colortex = SystemImpl.gl.createTexture();
+					SystemImpl.gl.bindTexture(GL.TEXTURE_2D, colortex);
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, realWidth, realHeight, 0, GL.RGBA, GL.UNSIGNED_BYTE, null);
+					SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, GL.COLOR_ATTACHMENT0, GL.TEXTURE_2D, colortex, 0);
+					SystemImpl.gl.bindTexture(GL.TEXTURE_2D, texture);
+				}
+			}
+			else {
+				if (samples > 1 && SystemImpl.gl2) {
+					MSAAFrameBuffer = SystemImpl.gl.createFramebuffer();
+					MSAAColorBuffer = SystemImpl.gl.createRenderbuffer();
+					SystemImpl.gl.bindRenderbuffer(GL.RENDERBUFFER, MSAAColorBuffer);
+					var MSAAFormat = switch (myFormat) {
+						case RGBA128:
+							untyped SystemImpl.gl.RGBA32F;
+						case RGBA64:
+							untyped SystemImpl.gl.RGBA16F;
+						case RGBA32:
+							untyped SystemImpl.gl.RGBA8;
+						case A32:
+							GL_R32F;
+						case A16:
+							GL_R16F;
+						default:
+							untyped SystemImpl.gl.RGBA8;
+					};
+					untyped SystemImpl.gl.renderbufferStorageMultisample(GL.RENDERBUFFER, samples, MSAAFormat, realWidth, realHeight);
+					SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+					SystemImpl.gl.framebufferRenderbuffer(GL.FRAMEBUFFER, GL.COLOR_ATTACHMENT0, GL.RENDERBUFFER, MSAAColorBuffer);
+					SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, MSAAFrameBuffer);
+				}
+				SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, GL.COLOR_ATTACHMENT0, GL.TEXTURE_2D, texture, 0);
+				SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, null);
+			}
+
+			initDepthStencilBuffer(depthStencilFormat);
+			var e = SystemImpl.gl.checkFramebufferStatus(GL.FRAMEBUFFER);
+			if (e != GL.FRAMEBUFFER_COMPLETE) {
+				trace("checkframebufferStatus error " + e);
+			}
+
+			SystemImpl.gl.bindRenderbuffer(GL.RENDERBUFFER, null);
+			SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, null);
+		}
+		else if (video != null) {
+			SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, GL.RGBA, GL.UNSIGNED_BYTE, video);
+		}
+		else {
+			switch (myFormat) {
+				case RGBA128:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_RGBA32F : GL.RGBA, myWidth, myHeight, 0, GL.RGBA, GL.FLOAT, image);
+				case RGBA64:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_RGBA16F : GL.RGBA, myWidth, myHeight, 0, GL.RGBA,
+						SystemImpl.halfFloat.HALF_FLOAT_OES, image);
+				case RGBA32:
+					if (Std.isOfType(image, Uint8Array)) {
+						SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, myWidth, myHeight, 0, GL.RGBA, GL.UNSIGNED_BYTE, image);
+					}
+					else {
+						SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, GL.RGBA, GL.UNSIGNED_BYTE, image);
+					}
+				case A32:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_R32F : GL.ALPHA, myWidth, myHeight, 0, SystemImpl.gl2 ? GL_RED : GL.ALPHA,
+						GL.FLOAT, image);
+				case A16:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_R16F : GL.ALPHA, myWidth, myHeight, 0, SystemImpl.gl2 ? GL_RED : GL.ALPHA,
+						SystemImpl.halfFloat.HALF_FLOAT_OES, image);
+				case L8:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.LUMINANCE, myWidth, myHeight, 0, GL.LUMINANCE, GL.UNSIGNED_BYTE, image);
+				default:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, GL.RGBA, GL.UNSIGNED_BYTE, image);
+			}
+		}
+		SystemImpl.gl.bindTexture(GL.TEXTURE_2D, null);
+	}
+
+	function initDepthStencilBuffer(depthStencilFormat: DepthStencilFormat) {
+		switch (depthStencilFormat) {
+			case NoDepthAndStencil:
+			case DepthOnly, Depth16:
+				{
+					if (SystemImpl.depthTexture == null) {
+						renderBuffer = SystemImpl.gl.createRenderbuffer();
+						SystemImpl.gl.bindRenderbuffer(GL.RENDERBUFFER, renderBuffer);
+						SystemImpl.gl.renderbufferStorage(GL.RENDERBUFFER, GL.DEPTH_COMPONENT16, realWidth, realHeight);
+						SystemImpl.gl.framebufferRenderbuffer(GL.FRAMEBUFFER, GL.DEPTH_ATTACHMENT, GL.RENDERBUFFER, renderBuffer);
+					}
+					else {
+						depthTexture = SystemImpl.gl.createTexture();
+						SystemImpl.gl.bindTexture(GL.TEXTURE_2D, depthTexture);
+						if (depthStencilFormat == DepthOnly)
+							SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_DEPTH_COMPONENT24 : GL.DEPTH_COMPONENT, realWidth, realHeight, 0,
+								GL.DEPTH_COMPONENT, GL.UNSIGNED_INT, null);
+						else
+							SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL.DEPTH_COMPONENT16 : GL.DEPTH_COMPONENT, realWidth, realHeight, 0,
+								GL.DEPTH_COMPONENT, GL.UNSIGNED_SHORT, null);
+						SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.NEAREST);
+						SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.NEAREST);
+						SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+						SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+						SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+
+						if (samples > 1 && SystemImpl.gl2) {
+							MSAADepthBuffer = SystemImpl.gl.createRenderbuffer();
+							SystemImpl.gl.bindRenderbuffer(GL.RENDERBUFFER, MSAADepthBuffer);
+							if (depthStencilFormat == DepthOnly)
+								untyped SystemImpl.gl.renderbufferStorageMultisample(GL.RENDERBUFFER, samples, GL_DEPTH_COMPONENT24, realWidth, realHeight);
+							else
+								untyped SystemImpl.gl.renderbufferStorageMultisample(GL.RENDERBUFFER, samples, GL.DEPTH_COMPONENT16, realWidth, realHeight);
+							SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+							SystemImpl.gl.framebufferRenderbuffer(GL.FRAMEBUFFER, GL.DEPTH_ATTACHMENT, GL.RENDERBUFFER, MSAADepthBuffer);
+							SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, MSAAFrameBuffer);
+						}
+						SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, GL.DEPTH_ATTACHMENT, GL.TEXTURE_2D, depthTexture, 0);
+						SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, null);
+					}
+				}
+			case DepthAutoStencilAuto, Depth24Stencil8, Depth32Stencil8:
+				if (SystemImpl.depthTexture == null) {
+					renderBuffer = SystemImpl.gl.createRenderbuffer();
+					SystemImpl.gl.bindRenderbuffer(GL.RENDERBUFFER, renderBuffer);
+					SystemImpl.gl.renderbufferStorage(GL.RENDERBUFFER, GL.DEPTH_STENCIL, realWidth, realHeight);
+					SystemImpl.gl.framebufferRenderbuffer(GL.FRAMEBUFFER, GL.DEPTH_STENCIL_ATTACHMENT, GL.RENDERBUFFER, renderBuffer);
+				}
+				else {
+					depthTexture = SystemImpl.gl.createTexture();
+					SystemImpl.gl.bindTexture(GL.TEXTURE_2D, depthTexture);
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_DEPTH24_STENCIL8 : GL.DEPTH_STENCIL, realWidth, realHeight, 0,
+						GL.DEPTH_STENCIL, SystemImpl.depthTexture.UNSIGNED_INT_24_8_WEBGL, null);
+					SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.NEAREST);
+					SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.NEAREST);
+					SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+					SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+					SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+					if (samples > 1 && SystemImpl.gl2) {
+						MSAADepthBuffer = SystemImpl.gl.createRenderbuffer();
+						SystemImpl.gl.bindRenderbuffer(GL.RENDERBUFFER, MSAADepthBuffer);
+						untyped SystemImpl.gl.renderbufferStorageMultisample(GL.RENDERBUFFER, samples, GL_DEPTH24_STENCIL8, realWidth, realHeight);
+						SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+						SystemImpl.gl.framebufferRenderbuffer(GL.FRAMEBUFFER, GL.DEPTH_STENCIL_ATTACHMENT, GL.RENDERBUFFER, MSAADepthBuffer);
+						SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, MSAAFrameBuffer);
+					}
+					SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, GL.DEPTH_STENCIL_ATTACHMENT, GL.TEXTURE_2D, depthTexture, 0);
+				}
+		}
+	}
+
+	public function set(stage: Int): Void {
+		SystemImpl.gl.activeTexture(GL.TEXTURE0 + stage);
+		SystemImpl.gl.bindTexture(GL.TEXTURE_2D, texture);
+		if (video != null)
+			SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, GL.RGBA, GL.UNSIGNED_BYTE, video);
+	}
+
+	public function setDepth(stage: Int): Void {
+		SystemImpl.gl.activeTexture(GL.TEXTURE0 + stage);
+		SystemImpl.gl.bindTexture(GL.TEXTURE_2D, depthTexture);
+	}
+
+	override public function setDepthStencilFrom(image: Image): Void {
+		depthTexture = cast(image, WebGLImage).depthTexture;
+		SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+		SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, GL.DEPTH_ATTACHMENT, GL.TEXTURE_2D, depthTexture, 0);
+		if (samples > 1 && SystemImpl.gl2) {
+			MSAADepthBuffer = cast(image, WebGLImage).MSAADepthBuffer;
+			SystemImpl.gl.framebufferRenderbuffer(GL.FRAMEBUFFER, GL.DEPTH_ATTACHMENT, GL.RENDERBUFFER, MSAADepthBuffer);
+		}
+	}
+
+	static function formatByteSize(format: TextureFormat): Int {
+		return switch (format) {
+			case RGBA32: 4;
+			case L8: 1;
+			case RGBA128: 16;
+			case DEPTH16: 2;
+			case RGBA64: 8;
+			case A32: 4;
+			case A16: 2;
+			default: 4;
+		}
+	}
+
+	public function bytesToArray(bytes: Bytes): js.lib.ArrayBufferView {
+		return switch (myFormat) {
+			case RGBA32, L8:
+				new Uint8Array(bytes.getData());
+			case RGBA128, RGBA64, A32, A16:
+				new Float32Array(bytes.getData());
+			default:
+				new Uint8Array(bytes.getData());
+		}
+	}
+
+	public var bytes: Bytes;
+
+	override public function lock(level: Int = 0): Bytes {
+		bytes = Bytes.alloc(formatByteSize(myFormat) * width * height);
+		return bytes;
+	}
+
+	override public function unlock(): Void {
+		data = null;
+		image = null;
+
+		if (SystemImpl.gl != null) {
+			texture = SystemImpl.gl.createTexture();
+			// texture.image = image;
+			SystemImpl.gl.bindTexture(GL.TEXTURE_2D, texture);
+			// Sys.gl.pixelStorei(Sys.gl.UNPACK_FLIP_Y_WEBGL, true);
+
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.LINEAR);
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR);
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+
+			switch (myFormat) {
+				case L8:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.LUMINANCE, width, height, 0, GL.LUMINANCE, GL.UNSIGNED_BYTE, bytesToArray(bytes));
+
+					if (SystemImpl.ie && SystemImpl.gl.getError() == 1282) { // no LUMINANCE support in IE11
+						var rgbaBytes = Bytes.alloc(width * height * 4);
+						for (y in 0...height)
+							for (x in 0...width) {
+								var value = bytes.get(y * width + x);
+								rgbaBytes.set(y * width * 4 + x * 4 + 0, value);
+								rgbaBytes.set(y * width * 4 + x * 4 + 1, value);
+								rgbaBytes.set(y * width * 4 + x * 4 + 2, value);
+								rgbaBytes.set(y * width * 4 + x * 4 + 3, 255);
+							}
+						SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, width, height, 0, GL.RGBA, GL.UNSIGNED_BYTE, bytesToArray(rgbaBytes));
+					}
+				case RGBA128:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_RGBA32F : GL.RGBA, width, height, 0, GL.RGBA, GL.FLOAT,
+						bytesToArray(bytes));
+				case RGBA64:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_RGBA16F : GL.RGBA, width, height, 0, GL.RGBA,
+						SystemImpl.halfFloat.HALF_FLOAT_OES, bytesToArray(bytes));
+				case A32:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_R32F : GL.ALPHA, width, height, 0, SystemImpl.gl2 ? GL_RED : GL.ALPHA,
+						GL.FLOAT, bytesToArray(bytes));
+				case A16:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, SystemImpl.gl2 ? GL_R16F : GL.ALPHA, width, height, 0, SystemImpl.gl2 ? GL_RED : GL.ALPHA,
+						SystemImpl.halfFloat.HALF_FLOAT_OES, bytesToArray(bytes));
+				case RGBA32:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, width, height, 0, GL.RGBA, GL.UNSIGNED_BYTE, bytesToArray(bytes));
+				default:
+					SystemImpl.gl.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, width, height, 0, GL.RGBA, GL.UNSIGNED_BYTE, bytesToArray(bytes));
+			}
+
+			SystemImpl.gl.bindTexture(GL.TEXTURE_2D, null);
+
+			if (!readable) {
+				bytes = null;
+			}
+		}
+	}
+
+	var pixels: js.lib.ArrayBufferView = null;
+
+	override public function getPixels(): Bytes {
+		if (frameBuffer == null)
+			return null;
+		if (pixels == null) {
+			switch (myFormat) {
+				case RGBA128, A32:
+					pixels = new Float32Array(Std.int(formatByteSize(myFormat) / 4) * width * height);
+				case RGBA64, A16:
+					pixels = new Uint16Array(Std.int(formatByteSize(myFormat) / 2) * width * height);
+				case RGBA32, L8:
+					pixels = new Uint8Array(formatByteSize(myFormat) * width * height);
+				default:
+					pixels = new Uint8Array(formatByteSize(myFormat) * width * height);
+			}
+		}
+		SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+		switch (myFormat) {
+			case RGBA128:
+				SystemImpl.gl.readPixels(0, 0, myWidth, myHeight, GL.RGBA, GL.FLOAT, pixels);
+			case RGBA64:
+				SystemImpl.gl.readPixels(0, 0, myWidth, myHeight, GL.RGBA, SystemImpl.halfFloat.HALF_FLOAT_OES, pixels);
+			case RGBA32:
+				SystemImpl.gl.readPixels(0, 0, myWidth, myHeight, GL.RGBA, GL.UNSIGNED_BYTE, pixels);
+			case A32:
+				SystemImpl.gl.readPixels(0, 0, myWidth, myHeight, SystemImpl.gl2 ? GL_RED : GL.ALPHA, GL.FLOAT, pixels);
+			case A16:
+				SystemImpl.gl.readPixels(0, 0, myWidth, myHeight, SystemImpl.gl2 ? GL_RED : GL.ALPHA, SystemImpl.halfFloat.HALF_FLOAT_OES, pixels);
+			case L8:
+				SystemImpl.gl.readPixels(0, 0, myWidth, myHeight, SystemImpl.gl2 ? GL_RED : GL.ALPHA, GL.UNSIGNED_BYTE, pixels);
+			default:
+				SystemImpl.gl.readPixels(0, 0, myWidth, myHeight, GL.RGBA, GL.UNSIGNED_BYTE, pixels);
+		}
+		return Bytes.ofData(pixels.buffer);
+	}
+
+	override public function unload(): Void {
+		if (texture != null)
+			SystemImpl.gl.deleteTexture(texture);
+		if (depthTexture != null)
+			SystemImpl.gl.deleteTexture(depthTexture);
+		if (frameBuffer != null)
+			SystemImpl.gl.deleteFramebuffer(frameBuffer);
+		if (renderBuffer != null)
+			SystemImpl.gl.deleteRenderbuffer(renderBuffer);
+		if (MSAAFrameBuffer != null)
+			SystemImpl.gl.deleteFramebuffer(MSAAFrameBuffer);
+		if (MSAAColorBuffer != null)
+			SystemImpl.gl.deleteRenderbuffer(MSAAColorBuffer);
+		if (MSAADepthBuffer != null)
+			SystemImpl.gl.deleteRenderbuffer(MSAADepthBuffer);
+	}
+
+	override public function generateMipmaps(levels: Int): Void {
+		// WebGL requires to generate all mipmaps down to 1x1 size, ignoring levels for now
+		SystemImpl.gl.bindTexture(GL.TEXTURE_2D, texture);
+		SystemImpl.gl.generateMipmap(GL.TEXTURE_2D);
+	}
+
+	override public function setMipmaps(mipmaps: Array<Image>): Void {
+		// Similar to generateMipmaps, specify all the levels down to 1x1 size
+		SystemImpl.gl.bindTexture(GL.TEXTURE_2D, texture);
+		if (myFormat == TextureFormat.RGBA128) {
+			for (i in 0...mipmaps.length) {
+				SystemImpl.gl.texImage2D(GL.TEXTURE_2D, i + 1, SystemImpl.gl2 ? GL_RGBA32F : GL.RGBA, mipmaps[i].width, mipmaps[i].height, 0, GL.RGBA,
+					GL.FLOAT, cast(mipmaps[i], WebGLImage).image);
+			}
+		}
+		else if (myFormat == TextureFormat.RGBA64) {
+			for (i in 0...mipmaps.length) {
+				SystemImpl.gl.texImage2D(GL.TEXTURE_2D, i + 1, SystemImpl.gl2 ? GL_RGBA16F : GL.RGBA, mipmaps[i].width, mipmaps[i].height, 0, GL.RGBA,
+					SystemImpl.halfFloat.HALF_FLOAT_OES, cast(mipmaps[i], WebGLImage).image);
+			}
+		}
+		else {
+			for (i in 0...mipmaps.length) {
+				SystemImpl.gl.texImage2D(GL.TEXTURE_2D, i + 1, GL.RGBA, GL.RGBA, GL.UNSIGNED_BYTE, cast(mipmaps[i], WebGLImage).image);
+			}
+		}
+	}
+}

Kha/Backends/HTML5/kha/Window.hx

@@ -0,0 +1,195 @@
+package kha;
+
+import js.Syntax;
+import js.html.MutationObserver;
+
+class Window {
+	static var windows: Array<Window> = [];
+	static var resizeCallbacks: Array<Array<Int->Int->Void>> = [];
+
+	var num: Int;
+	var canvas: js.html.CanvasElement;
+	var defaultWidth: Int;
+	var defaultHeight: Int;
+
+	@:noCompletion
+	@:noDoc
+	public function new(num: Int, defaultWidth: Int, defaultHeight: Int, canvas: js.html.CanvasElement) {
+		this.num = num;
+		this.canvas = canvas;
+		this.defaultWidth = defaultWidth;
+		this.defaultHeight = defaultHeight;
+		windows.push(this);
+		resizeCallbacks[num] = [];
+		windows.push(this);
+		final observer: MutationObserver = new MutationObserver(function(mutations: Array<js.html.MutationRecord>, observer: MutationObserver) {
+			var isResize = false;
+			for (mutation in mutations) {
+				if (mutation.attributeName == "width" || mutation.attributeName == "height") {
+					isResize = true;
+					break;
+				}
+			}
+			if (isResize) {
+				this.resize(canvas.width, canvas.height);
+			}
+		});
+		observer.observe(canvas, {attributes: true});
+	}
+
+	public static function create(win: WindowOptions = null, frame: FramebufferOptions = null): Window {
+		return null;
+	}
+
+	public static function destroy(window: Window): Void {}
+
+	public static function get(index: Int): Window {
+		return windows[index];
+	}
+
+	public static var all(get, never): Array<Window>;
+
+	static function get_all(): Array<Window> {
+		return windows;
+	}
+
+	public function resize(width: Int, height: Int): Void {
+		for (callback in resizeCallbacks[num]) {
+			callback(width, height);
+		}
+	}
+
+	public function move(x: Int, y: Int): Void {}
+
+	public function changeWindowFeatures(features: Int): Void {}
+
+	public function changeFramebuffer(frame: FramebufferOptions): Void {}
+
+	public var x(get, set): Int;
+
+	function get_x(): Int {
+		return 0;
+	}
+
+	function set_x(value: Int): Int {
+		return 0;
+	}
+
+	public var y(get, set): Int;
+
+	function get_y(): Int {
+		return 0;
+	}
+
+	function set_y(value: Int): Int {
+		return 0;
+	}
+
+	public var width(get, set): Int;
+
+	function get_width(): Int {
+		return canvas.width == 0 ? defaultWidth : canvas.width;
+	}
+
+	function set_width(value: Int): Int {
+		return 800;
+	}
+
+	public var height(get, set): Int;
+
+	function get_height(): Int {
+		return canvas.height == 0 ? defaultHeight : canvas.height;
+	}
+
+	function set_height(value: Int): Int {
+		return 600;
+	}
+
+	public var mode(get, set): WindowMode;
+
+	function get_mode(): WindowMode {
+		return isFullscreen() ? Fullscreen : Windowed;
+	}
+
+	function set_mode(mode: WindowMode): WindowMode {
+		if (mode == Fullscreen || mode == ExclusiveFullscreen) {
+			if (!isFullscreen()) {
+				requestFullscreen();
+			}
+		}
+		else {
+			if (isFullscreen()) {
+				exitFullscreen();
+			}
+		}
+		return mode;
+	}
+
+	function isFullscreen(): Bool {
+		return Syntax.code("document.fullscreenElement === this.canvas ||
+			document.mozFullScreenElement === this.canvas ||
+			document.webkitFullscreenElement === this.canvas ||
+			document.msFullscreenElement === this.canvas ");
+	}
+
+	function requestFullscreen(): Void {
+		untyped if (canvas.requestFullscreen) {
+			var c: Dynamic = canvas;
+			c.requestFullscreen({navigationUI: "hide"});
+		}
+		else if (canvas.msRequestFullscreen) {
+			canvas.msRequestFullscreen();
+		}
+		else if (canvas.mozRequestFullScreen) {
+			canvas.mozRequestFullScreen();
+		}
+		else if (canvas.webkitRequestFullscreen) {
+			canvas.webkitRequestFullscreen();
+		}
+	}
+
+	function exitFullscreen(): Void {
+		untyped if (document.exitFullscreen) {
+			document.exitFullscreen();
+		}
+		else if (document.msExitFullscreen) {
+			document.msExitFullscreen();
+		}
+		else if (document.mozCancelFullScreen) {
+			document.mozCancelFullScreen();
+		}
+		else if (document.webkitExitFullscreen) {
+			document.webkitExitFullscreen();
+		}
+	}
+
+	public var visible(get, set): Bool;
+
+	function get_visible(): Bool {
+		return true;
+	}
+
+	function set_visible(value: Bool): Bool {
+		return true;
+	}
+
+	public var title(get, set): String;
+
+	function get_title(): String {
+		return "Kha";
+	}
+
+	function set_title(value: String): String {
+		return "Kha";
+	}
+
+	public function notifyOnResize(callback: Int->Int->Void): Void {
+		resizeCallbacks[num].push(callback);
+	}
+
+	public var vSynced(get, never): Bool;
+
+	function get_vSynced(): Bool {
+		return true;
+	}
+}

Kha/Backends/HTML5/kha/arrays/ByteArray.hx

@@ -0,0 +1,187 @@
+package kha.arrays;
+
+import js.lib.DataView;
+import kha.FastFloat;
+
+@:forward
+abstract ByteArray(DataView) to DataView {
+	static final LITTLE_ENDIAN: Bool = js.Syntax.code("new Uint8Array(new Uint32Array([0x12345678]).buffer)[0] === 0x78");
+
+	public var buffer(get, never): ByteBuffer;
+
+	inline function get_buffer(): ByteBuffer {
+		return cast this.buffer;
+	}
+
+	public function new(buffer: ByteBuffer, ?byteOffset: Int, ?byteLength: Int) {
+		this = new DataView(buffer, byteOffset, byteLength);
+	}
+
+	static public function make(byteLength: Int): ByteArray {
+		return new ByteArray(ByteBuffer.create(byteLength));
+	}
+
+	public inline function getInt8(byteOffset: Int): Int {
+		return this.getInt8(byteOffset);
+	}
+
+	public inline function getUint8(byteOffset: Int): Int {
+		return this.getUint8(byteOffset);
+	}
+
+	public inline function getInt16(byteOffset: Int): Int {
+		return this.getInt16(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function getUint16(byteOffset: Int): Int {
+		return this.getUint16(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function getInt32(byteOffset: Int): Int {
+		return this.getInt32(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function getUint32(byteOffset: Int): Int {
+		return this.getUint32(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function getFloat32(byteOffset: Int): FastFloat {
+		return this.getFloat32(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function getFloat64(byteOffset: Int): Float {
+		return this.getFloat64(byteOffset, LITTLE_ENDIAN);
+	}
+
+	public inline function setInt8(byteOffset: Int, value: Int): Void {
+		this.setInt8(byteOffset, value);
+	}
+
+	public inline function setUint8(byteOffset: Int, value: Int): Void {
+		this.setUint8(byteOffset, value);
+	}
+
+	public inline function setInt16(byteOffset: Int, value: Int): Void {
+		this.setInt16(byteOffset, value, LITTLE_ENDIAN);
+	}
+
+	public inline function setUint16(byteOffset: Int, value: Int): Void {
+		this.setUint16(byteOffset, value, LITTLE_ENDIAN);
+	}
+
+	public inline function setInt32(byteOffset: Int, value: Int): Void {
+		this.setInt32(byteOffset, value, LITTLE_ENDIAN);
+	}
+
+	public inline function setUint32(byteOffset: Int, value: Int): Void {
+		this.setUint32(byteOffset, value, LITTLE_ENDIAN);
+	}
+
+	public inline function setFloat32(byteOffset: Int, value: FastFloat): Void {
+		this.setFloat32(byteOffset, value, true);
+	}
+
+	public inline function setFloat64(byteOffset: Int, value: Float): Void {
+		this.setFloat64(byteOffset, value, LITTLE_ENDIAN);
+	}
+
+	public inline function getInt16LE(byteOffset: Int): Int {
+		return this.getInt16(byteOffset, true);
+	}
+
+	public inline function getUint16LE(byteOffset: Int): Int {
+		return this.getUint16(byteOffset, true);
+	}
+
+	public inline function getInt32LE(byteOffset: Int): Int {
+		return this.getInt32(byteOffset, true);
+	}
+
+	public inline function getUint32LE(byteOffset: Int): Int {
+		return this.getUint32(byteOffset, true);
+	}
+
+	public inline function getFloat32LE(byteOffset: Int): FastFloat {
+		return this.getFloat32(byteOffset, true);
+	}
+
+	public inline function getFloat64LE(byteOffset: Int): Float {
+		return this.getFloat64(byteOffset, true);
+	}
+
+	public inline function setInt16LE(byteOffset: Int, value: Int): Void {
+		this.setInt16(byteOffset, value, true);
+	}
+
+	public inline function setUint16LE(byteOffset: Int, value: Int): Void {
+		this.setUint16(byteOffset, value, true);
+	}
+
+	public inline function setInt32LE(byteOffset: Int, value: Int): Void {
+		this.setInt32(byteOffset, value, true);
+	}
+
+	public inline function setUint32LE(byteOffset: Int, value: Int): Void {
+		this.setUint32(byteOffset, value, true);
+	}
+
+	public inline function setFloat32LE(byteOffset: Int, value: FastFloat): Void {
+		this.setFloat32(byteOffset, value, true);
+	}
+
+	public inline function setFloat64LE(byteOffset: Int, value: Float): Void {
+		this.setFloat64(byteOffset, value, true);
+	}
+
+	public inline function getInt16BE(byteOffset: Int): Int {
+		return this.getInt16(byteOffset);
+	}
+
+	public inline function getUint16BE(byteOffset: Int): Int {
+		return this.getUint16(byteOffset);
+	}
+
+	public inline function getInt32BE(byteOffset: Int): Int {
+		return this.getInt32(byteOffset);
+	}
+
+	public inline function getUint32BE(byteOffset: Int): Int {
+		return this.getUint32(byteOffset);
+	}
+
+	public inline function getFloat32BE(byteOffset: Int): FastFloat {
+		return this.getFloat32(byteOffset);
+	}
+
+	public inline function getFloat64BE(byteOffset: Int): Float {
+		return this.getFloat64(byteOffset);
+	}
+
+	public inline function setInt16BE(byteOffset: Int, value: Int): Void {
+		this.setInt16(byteOffset, value);
+	}
+
+	public inline function setUint16BE(byteOffset: Int, value: Int): Void {
+		this.setUint16(byteOffset, value);
+	}
+
+	public inline function setInt32BE(byteOffset: Int, value: Int): Void {
+		this.setInt32(byteOffset, value);
+	}
+
+	public inline function setUint32BE(byteOffset: Int, value: Int): Void {
+		this.setUint32(byteOffset, value);
+	}
+
+	public inline function setFloat32BE(byteOffset: Int, value: FastFloat): Void {
+		this.setFloat32(byteOffset, value);
+	}
+
+	public inline function setFloat64BE(byteOffset: Int, value: Float): Void {
+		this.setFloat64(byteOffset, value);
+	}
+
+	public inline function subarray(start: Int, ?end: Int): ByteArray {
+		return new ByteArray(buffer, start, end != null ? end - start : null);
+	}
+}

Kha/Backends/HTML5/kha/arrays/ByteBuffer.hx

@@ -0,0 +1,14 @@
+package kha.arrays;
+
+import js.lib.ArrayBuffer;
+
+@:forward
+abstract ByteBuffer(ArrayBuffer) from ArrayBuffer to ArrayBuffer {
+	public static function create(length: Int): ByteBuffer {
+		return new ByteBuffer(length);
+	}
+
+	function new(length: Int) {
+		this = new ArrayBuffer(length);
+	}
+}

Kha/Backends/HTML5/kha/audio1/Audio.hx

@@ -0,0 +1,3 @@
+package kha.audio1;
+
+typedef Audio = kha.audio2.Audio1;

Kha/Backends/HTML5/kha/audio2/Audio.hx

@@ -0,0 +1,107 @@
+package kha.audio2;
+
+import js.Syntax;
+import js.Browser;
+import js.html.URL;
+import js.html.audio.AudioContext;
+import js.html.audio.AudioProcessingEvent;
+import js.html.audio.ScriptProcessorNode;
+import kha.internal.IntBox;
+import kha.js.AEAudioChannel;
+import kha.Sound;
+
+class Audio {
+	public static var disableGcInteractions = false;
+	static var intBox: IntBox = new IntBox(0);
+	static var buffer: Buffer;
+	@:noCompletion public static var _context: AudioContext;
+	static var processingNode: ScriptProcessorNode;
+
+	static function initContext(): Void {
+		try {
+			_context = new AudioContext();
+			return;
+		}
+		catch (e:Dynamic) {}
+		try {
+			Syntax.code("this._context = new webkitAudioContext();");
+			return;
+		}
+		catch (e:Dynamic) {}
+	}
+
+	@:noCompletion
+	public static function _init(): Bool {
+		initContext();
+		if (_context == null)
+			return false;
+
+		Audio.samplesPerSecond = Math.round(_context.sampleRate);
+		var bufferSize = 1024 * 2;
+		buffer = new Buffer(bufferSize * 4, 2, Std.int(_context.sampleRate));
+
+		processingNode = _context.createScriptProcessor(bufferSize, 0, 2);
+		processingNode.onaudioprocess = function(e: AudioProcessingEvent) {
+			var output1 = e.outputBuffer.getChannelData(0);
+			var output2 = e.outputBuffer.getChannelData(1);
+			if (audioCallback != null) {
+				intBox.value = e.outputBuffer.length * 2;
+				audioCallback(intBox, buffer);
+				for (i in 0...e.outputBuffer.length) {
+					output1[i] = buffer.data.get(buffer.readLocation);
+					buffer.readLocation += 1;
+					output2[i] = buffer.data.get(buffer.readLocation);
+					buffer.readLocation += 1;
+					if (buffer.readLocation >= buffer.size) {
+						buffer.readLocation = 0;
+					}
+				}
+			}
+			else {
+				for (i in 0...e.outputBuffer.length) {
+					output1[i] = 0;
+					output2[i] = 0;
+				}
+			}
+		}
+		processingNode.connect(_context.destination);
+		return true;
+	}
+
+	public static var samplesPerSecond: Int;
+
+	public static var audioCallback: kha.internal.IntBox->Buffer->Void;
+
+	static var virtualChannels: Array<VirtualStreamChannel> = [];
+
+	public static function wakeChannels() {
+		SystemImpl.mobileAudioPlaying = true;
+		for (channel in virtualChannels) {
+			channel.wake();
+		}
+	}
+
+	public static function stream(sound: Sound, loop: Bool = false): kha.audio1.AudioChannel {
+		// var source = _context.createMediaStreamSource(cast sound.compressedData.getData());
+		// source.connect(_context.destination);
+		var element = Browser.document.createAudioElement();
+		#if kha_debug_html5
+		var blob = new js.html.Blob([sound.compressedData.getData()], {type: "audio/ogg"});
+		#else
+		var blob = new js.html.Blob([sound.compressedData.getData()], {type: "audio/mp4"});
+		#end
+		element.src = URL.createObjectURL(blob);
+		element.loop = loop;
+		var channel = new AEAudioChannel(element, loop);
+
+		if (SystemImpl.mobileAudioPlaying) {
+			channel.play();
+			return channel;
+		}
+		else {
+			var virtualChannel = new VirtualStreamChannel(channel, loop);
+			virtualChannels.push(virtualChannel);
+			return virtualChannel;
+		}
+	}
+}

Kha/Backends/HTML5/kha/audio2/VirtualStreamChannel.hx

@@ -0,0 +1,126 @@
+package kha.audio2;
+
+import kha.js.AEAudioChannel;
+import kha.audio1.AudioChannel;
+
+enum abstract PlayMode(Int) {
+	var Stopped;
+	var Paused;
+	var Playing;
+}
+
+class VirtualStreamChannel implements kha.audio1.AudioChannel {
+	var aeChannel: AEAudioChannel;
+	var mode = PlayMode.Playing;
+	var lastTickTime: Float;
+	var lastPosition: Float;
+	var looping: Bool;
+
+	public function new(aeChannel: AEAudioChannel, looping: Bool) {
+		this.aeChannel = aeChannel;
+		this.looping = looping;
+		lastTickTime = Scheduler.realTime();
+		lastPosition = 0;
+	}
+
+	public function wake(): Void {
+		updatePosition();
+		aeChannel.position = lastPosition;
+		aeChannel.play();
+	}
+
+	function updatePosition(): Void {
+		var now = Scheduler.realTime();
+		switch (mode) {
+			case Stopped:
+				lastPosition = 0;
+			case Paused:
+			// nothing
+			case Playing:
+				lastPosition += now - lastTickTime;
+				while (lastPosition > length) {
+					lastPosition -= length;
+				}
+		}
+		lastTickTime = now;
+	}
+
+	public function play(): Void {
+		if (SystemImpl.mobileAudioPlaying) {
+			aeChannel.play();
+		}
+		else {
+			updatePosition();
+			mode = Playing;
+		}
+	}
+
+	public function pause(): Void {
+		if (SystemImpl.mobileAudioPlaying) {
+			aeChannel.pause();
+		}
+		else {
+			updatePosition();
+			mode = Paused;
+		}
+	}
+
+	public function stop(): Void {
+		if (SystemImpl.mobileAudioPlaying) {
+			aeChannel.stop();
+		}
+		else {
+			updatePosition();
+			mode = Stopped;
+		}
+	}
+
+	public var length(get, never): Float; // Seconds
+
+	function get_length(): Float {
+		return aeChannel.length;
+	}
+
+	public var position(get, set): Float; // Seconds
+
+	function get_position(): Float {
+		if (SystemImpl.mobileAudioPlaying) {
+			return aeChannel.position;
+		}
+		else {
+			updatePosition();
+			return lastPosition;
+		}
+	}
+
+	function set_position(value: Float): Float {
+		if (SystemImpl.mobileAudioPlaying) {
+			return aeChannel.position = value;
+		}
+		else {
+			updatePosition();
+			return lastPosition = value;
+		}
+	}
+
+	public var volume(get, set): Float;
+
+	function get_volume(): Float {
+		return aeChannel.volume;
+	}
+
+	function set_volume(value: Float): Float {
+		return aeChannel.volume = value;
+	}
+
+	public var finished(get, never): Bool;
+
+	function get_finished(): Bool {
+		if (SystemImpl.mobileAudioPlaying) {
+			return aeChannel.finished;
+		}
+		else {
+			return mode == Stopped || (!looping && position >= length);
+		}
+	}
+}

Kha/Backends/HTML5/kha/capture/AudioCapture.hx

@@ -0,0 +1,51 @@
+package kha.capture;
+
+import js.html.audio.AudioProcessingEvent;
+import kha.audio2.Buffer;
+
+class AudioCapture {
+	static var input: js.html.audio.MediaStreamAudioSourceNode;
+	static var processingNode: js.html.audio.ScriptProcessorNode;
+	static var buffer: Buffer;
+
+	public static var audioCallback: Int->Buffer->Void;
+
+	public static function init(initialized: Void->Void, error: Void->Void): Void {
+		if (kha.audio2.Audio._context == null) {
+			error();
+			return;
+		}
+
+		var getUserMedia = untyped __js__("navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia");
+		getUserMedia.call(js.Browser.navigator, {audio: true}, function(stream: Dynamic) {
+			input = kha.audio2.Audio._context.createMediaStreamSource(stream);
+
+			var bufferSize = 1024 * 2;
+			buffer = new Buffer(bufferSize * 4, 2, Std.int(kha.audio2.Audio._context.sampleRate));
+
+			processingNode = kha.audio2.Audio._context.createScriptProcessor(bufferSize, 1, 0);
+			processingNode.onaudioprocess = function(e: AudioProcessingEvent) {
+				if (audioCallback != null) {
+					var input1 = e.inputBuffer.getChannelData(0);
+					var input2 = e.inputBuffer.getChannelData(0);
+					for (i in 0...e.inputBuffer.length) {
+						buffer.data.set(buffer.writeLocation, input1[i]);
+						buffer.writeLocation += 1;
+						buffer.data.set(buffer.writeLocation, input2[i]);
+						buffer.writeLocation += 1;
+						if (buffer.writeLocation >= buffer.size) {
+							buffer.writeLocation = 0;
+						}
+					}
+					audioCallback(e.inputBuffer.length * 2, buffer);
+				}
+			}
+
+			input.connect(processingNode);
+			// input.connect(kha.audio2.Audio._context.destination);
+			initialized();
+		}, function() {
+			error();
+		});
+	}
+}

Kha/Backends/HTML5/kha/capture/VideoCapture.hx

@@ -0,0 +1,18 @@
+package kha.capture;
+
+import js.Browser;
+
+class VideoCapture {
+	public static function init(initialized: kha.Video->Void, error: Void->Void): Void {
+		var getUserMedia = untyped __js__("navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia");
+		getUserMedia.call(js.Browser.navigator, {audio: true, video: true}, function(stream: Dynamic) {
+			var element: js.html.VideoElement = cast Browser.document.createElement("video");
+			element.srcObject = stream;
+			element.onloadedmetadata = function(e) {
+				initialized(kha.js.Video.fromElement(element));
+			}
+		}, function() {
+			error();
+		});
+	}
+}

Kha/Backends/HTML5/kha/graphics4/CubeMap.hx

@@ -0,0 +1,199 @@
+package kha.graphics4;
+
+import js.html.webgl.GL;
+import haxe.io.Bytes;
+import kha.js.graphics4.Graphics;
+
+class CubeMap implements Canvas implements Resource {
+	var myWidth: Int;
+	var myHeight: Int;
+	var format: TextureFormat;
+	var renderTarget: Bool;
+	var depthStencilFormat: DepthStencilFormat;
+	var graphics4: kha.graphics4.Graphics;
+
+	public var frameBuffer: Dynamic = null;
+	public var texture: Dynamic = null;
+	public var depthTexture: Dynamic = null;
+	public var isDepthAttachment: Bool = false;
+
+	// WebGL2 constants
+	static inline var GL_RGBA16F = 0x881A;
+	static inline var GL_RGBA32F = 0x8814;
+	static inline var GL_R16F = 0x822D;
+	static inline var GL_R32F = 0x822E;
+	static inline var GL_DEPTH_COMPONENT24 = 0x81A6;
+	static inline var GL_DEPTH24_STENCIL8 = 0x88F0;
+	static inline var GL_DEPTH32F_STENCIL8 = 0x8CAD;
+
+	function new(size: Int, format: TextureFormat, renderTarget: Bool, depthStencilFormat: DepthStencilFormat) {
+		myWidth = size;
+		myHeight = size;
+		this.format = format;
+		this.renderTarget = renderTarget;
+		this.depthStencilFormat = depthStencilFormat;
+		if (renderTarget)
+			createTexture();
+	}
+
+	public static function createRenderTarget(size: Int, format: TextureFormat = null, depthStencil: DepthStencilFormat = null): CubeMap {
+		if (format == null)
+			format = TextureFormat.RGBA32;
+		if (depthStencil == null)
+			depthStencil = NoDepthAndStencil;
+		return new CubeMap(size, format, true, depthStencil);
+	}
+
+	function createTexture() {
+		if (SystemImpl.gl == null)
+			return;
+
+		texture = SystemImpl.gl.createTexture();
+		SystemImpl.gl.bindTexture(GL.TEXTURE_CUBE_MAP, texture);
+
+		SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_MAG_FILTER, GL.LINEAR);
+		SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_MIN_FILTER, GL.LINEAR);
+		SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+		SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+
+		if (renderTarget) {
+			frameBuffer = SystemImpl.gl.createFramebuffer();
+			SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+
+			switch (format) {
+				case DEPTH16:
+					for (i in 0...6)
+						SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, SystemImpl.gl2 ? GL.DEPTH_COMPONENT16 : GL.DEPTH_COMPONENT, myWidth,
+							myHeight, 0, GL.DEPTH_COMPONENT, GL.UNSIGNED_SHORT, null);
+				case RGBA128:
+					for (i in 0...6)
+						SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, SystemImpl.gl2 ? GL_RGBA32F : GL.RGBA, myWidth, myHeight, 0, GL.RGBA,
+							GL.FLOAT, null);
+				case RGBA64:
+					for (i in 0...6)
+						SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, SystemImpl.gl2 ? GL_RGBA16F : GL.RGBA, myWidth, myHeight, 0, GL.RGBA,
+							SystemImpl.halfFloat.HALF_FLOAT_OES, null);
+				case RGBA32:
+					for (i in 0...6)
+						SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL.RGBA, myWidth, myHeight, 0, GL.RGBA, GL.UNSIGNED_BYTE, null);
+				case A32:
+					for (i in 0...6)
+						SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, SystemImpl.gl2 ? GL_R32F : GL.ALPHA, myWidth, myHeight, 0, GL.ALPHA,
+							GL.FLOAT, null);
+				case A16:
+					for (i in 0...6)
+						SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, SystemImpl.gl2 ? GL_R16F : GL.ALPHA, myWidth, myHeight, 0, GL.ALPHA,
+							SystemImpl.halfFloat.HALF_FLOAT_OES, null);
+				default:
+					for (i in 0...6)
+						SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL.RGBA, myWidth, myHeight, 0, GL.RGBA, GL.UNSIGNED_BYTE, null);
+			}
+
+			if (format == DEPTH16) {
+				SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_MAG_FILTER, GL.NEAREST);
+				SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_MIN_FILTER, GL.NEAREST);
+				isDepthAttachment = true;
+				// Some WebGL implementations throw incomplete framebuffer error, create color attachment
+				if (!SystemImpl.gl2) {
+					var colortex = SystemImpl.gl.createTexture();
+					SystemImpl.gl.bindTexture(GL.TEXTURE_CUBE_MAP, colortex);
+					for (i in 0...6) {
+						SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL.RGBA, myWidth, myHeight, 0, GL.RGBA, GL.UNSIGNED_BYTE, null);
+						SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, GL.COLOR_ATTACHMENT0, GL.TEXTURE_CUBE_MAP_POSITIVE_X + i, colortex, 0);
+					}
+					SystemImpl.gl.bindTexture(GL.TEXTURE_CUBE_MAP, texture);
+				}
+			}
+
+			initDepthStencilBuffer(depthStencilFormat);
+			SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, null);
+		}
+
+		SystemImpl.gl.bindTexture(GL.TEXTURE_CUBE_MAP, null);
+	}
+
+	function initDepthStencilBuffer(depthStencilFormat: DepthStencilFormat) {
+		switch (depthStencilFormat) {
+			case NoDepthAndStencil:
+			case DepthOnly, Depth16:
+				{
+					depthTexture = SystemImpl.gl.createTexture();
+					SystemImpl.gl.bindTexture(GL.TEXTURE_CUBE_MAP, depthTexture);
+					if (depthStencilFormat == DepthOnly)
+						SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP, 0, SystemImpl.gl2 ? GL_DEPTH_COMPONENT24 : GL.DEPTH_COMPONENT, myWidth, myHeight, 0,
+							GL.DEPTH_COMPONENT, GL.UNSIGNED_INT, null);
+					else
+						SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP, 0, SystemImpl.gl2 ? GL.DEPTH_COMPONENT16 : GL.DEPTH_COMPONENT, myWidth, myHeight, 0,
+							GL.DEPTH_COMPONENT, GL.UNSIGNED_SHORT, null);
+					SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_MAG_FILTER, GL.NEAREST);
+					SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_MIN_FILTER, GL.NEAREST);
+					SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+					SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+					SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+					SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, GL.DEPTH_ATTACHMENT, GL.TEXTURE_CUBE_MAP, depthTexture, 0);
+				}
+			case DepthAutoStencilAuto, Depth24Stencil8, Depth32Stencil8:
+				depthTexture = SystemImpl.gl.createTexture();
+				SystemImpl.gl.bindTexture(GL.TEXTURE_CUBE_MAP, depthTexture);
+				SystemImpl.gl.texImage2D(GL.TEXTURE_CUBE_MAP, 0, SystemImpl.gl2 ? GL_DEPTH24_STENCIL8 : GL.DEPTH_STENCIL, myWidth, myHeight, 0,
+					GL.DEPTH_STENCIL, SystemImpl.depthTexture.UNSIGNED_INT_24_8_WEBGL, null);
+				SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_MAG_FILTER, GL.NEAREST);
+				SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_MIN_FILTER, GL.NEAREST);
+				SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+				SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+				SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, frameBuffer);
+				SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, GL.DEPTH_STENCIL_ATTACHMENT, GL.TEXTURE_CUBE_MAP, depthTexture, 0);
+		}
+	}
+
+	public function set(stage: Int): Void {
+		SystemImpl.gl.activeTexture(GL.TEXTURE0 + stage);
+		SystemImpl.gl.bindTexture(GL.TEXTURE_CUBE_MAP, texture);
+	}
+
+	public function setDepth(stage: Int): Void {
+		SystemImpl.gl.activeTexture(GL.TEXTURE0 + stage);
+		SystemImpl.gl.bindTexture(GL.TEXTURE_CUBE_MAP, depthTexture);
+	}
+
+	public function unload(): Void {}
+
+	public function lock(level: Int = 0): Bytes {
+		return null;
+	}
+
+	public function unlock(): Void {}
+
+	public var width(get, never): Int;
+
+	function get_width(): Int {
+		return myWidth;
+	}
+
+	public var height(get, never): Int;
+
+	function get_height(): Int {
+		return myHeight;
+	}
+
+	public var g1(get, never): kha.graphics1.Graphics;
+
+	function get_g1(): kha.graphics1.Graphics {
+		return null;
+	}
+
+	public var g2(get, never): kha.graphics2.Graphics;
+
+	function get_g2(): kha.graphics2.Graphics {
+		return null;
+	}
+
+	public var g4(get, never): kha.graphics4.Graphics;
+
+	function get_g4(): kha.graphics4.Graphics {
+		if (graphics4 == null) {
+			graphics4 = new Graphics(this);
+		}
+		return graphics4;
+	}
+}

Kha/Backends/HTML5/kha/graphics4/FragmentShader.hx

@@ -0,0 +1,32 @@
+package kha.graphics4;
+
+import js.html.webgl.GL;
+
+class FragmentShader {
+	public var sources: Array<String>;
+	public var type: Dynamic;
+	public var shader: Dynamic;
+	public var files: Array<String>;
+
+	public function new(sources: Array<Blob>, files: Array<String>) {
+		this.sources = [];
+		for (source in sources) {
+			this.sources.push(source.toString());
+		}
+		this.type = GL.FRAGMENT_SHADER;
+		this.shader = null;
+		this.files = files;
+	}
+
+	public static function fromSource(source: String): FragmentShader {
+		var shader = new FragmentShader([], ["runtime-string"]);
+		shader.sources.push(source);
+		return shader;
+	}
+
+	public function delete(): Void {
+		SystemImpl.gl.deleteShader(shader);
+		shader = null;
+		sources = null;
+	}
+}

Kha/Backends/HTML5/kha/graphics4/IndexBuffer.hx

@@ -0,0 +1,50 @@
+package kha.graphics4;
+
+import js.html.webgl.GL;
+import kha.arrays.Uint32Array;
+import kha.graphics4.Usage;
+
+class IndexBuffer {
+	public var _data: Uint32Array;
+
+	var buffer: Dynamic;
+	var mySize: Int;
+	var usage: Usage;
+	var lockStart: Int = 0;
+	var lockEnd: Int = 0;
+
+	public function new(indexCount: Int, usage: Usage, canRead: Bool = false) {
+		this.usage = usage;
+		mySize = indexCount;
+		buffer = SystemImpl.gl.createBuffer();
+		_data = new Uint32Array(indexCount);
+	}
+
+	public function delete(): Void {
+		_data = null;
+		SystemImpl.gl.deleteBuffer(buffer);
+	}
+
+	public function lock(?start: Int, ?count: Int): Uint32Array {
+		lockStart = start != null ? start : 0;
+		lockEnd = count != null ? start + count : mySize;
+		return _data.subarray(lockStart, lockEnd);
+	}
+
+	public function unlock(?count: Int): Void {
+		if (count != null)
+			lockEnd = lockStart + count;
+		SystemImpl.gl.bindBuffer(GL.ELEMENT_ARRAY_BUFFER, buffer);
+		var data = _data.subarray(lockStart, lockEnd);
+		var glData: Dynamic = SystemImpl.elementIndexUint == null ? new js.lib.Uint16Array(data.buffer) : data;
+		SystemImpl.gl.bufferData(GL.ELEMENT_ARRAY_BUFFER, glData, usage == Usage.DynamicUsage ? GL.DYNAMIC_DRAW : GL.STATIC_DRAW);
+	}
+
+	public function set(): Void {
+		SystemImpl.gl.bindBuffer(GL.ELEMENT_ARRAY_BUFFER, buffer);
+	}
+
+	public function count(): Int {
+		return mySize;
+	}
+}

Kha/Backends/HTML5/kha/graphics4/PipelineState.hx

@@ -0,0 +1,133 @@
+package kha.graphics4;
+
+import js.html.webgl.GL;
+import kha.graphics4.VertexData;
+
+class PipelineState extends PipelineStateBase {
+	var program: Dynamic = null;
+	var textures: Array<String>;
+	var textureValues: Array<Dynamic>;
+
+	public function new() {
+		super();
+		textures = new Array<String>();
+		textureValues = new Array<Dynamic>();
+	}
+
+	public function delete(): Void {
+		if (program != null) {
+			SystemImpl.gl.deleteProgram(program);
+		}
+	}
+
+	public function compile(): Void {
+		if (program != null) {
+			SystemImpl.gl.deleteProgram(program);
+		}
+		program = SystemImpl.gl.createProgram();
+		compileShader(vertexShader);
+		compileShader(fragmentShader);
+		SystemImpl.gl.attachShader(program, vertexShader.shader);
+		SystemImpl.gl.attachShader(program, fragmentShader.shader);
+
+		var index = 0;
+		for (structure in inputLayout) {
+			for (element in structure.elements) {
+				SystemImpl.gl.bindAttribLocation(program, index, element.name);
+				if (element.data == VertexData.Float32_4X4) {
+					index += 4;
+				}
+				else {
+					++index;
+				}
+			}
+		}
+
+		SystemImpl.gl.linkProgram(program);
+		if (!SystemImpl.gl.getProgramParameter(program, GL.LINK_STATUS)) {
+			var message = "Could not link the shader program:\n" + SystemImpl.gl.getProgramInfoLog(program);
+			trace("Error: " + message);
+			throw message;
+		}
+	}
+
+	public function set(): Void {
+		SystemImpl.gl.useProgram(program);
+		for (index in 0...textureValues.length)
+			SystemImpl.gl.uniform1i(textureValues[index], index);
+		SystemImpl.gl.colorMask(colorWriteMaskRed, colorWriteMaskGreen, colorWriteMaskBlue, colorWriteMaskAlpha);
+	}
+
+	function compileShader(shader: Dynamic): Void {
+		if (shader.shader != null)
+			return;
+		var s = SystemImpl.gl.createShader(shader.type);
+		var highp = SystemImpl.gl.getShaderPrecisionFormat(GL.FRAGMENT_SHADER, GL.HIGH_FLOAT);
+		var highpSupported = highp.precision != 0;
+		var files: Array<String> = shader.files;
+		for (i in 0...files.length) {
+			if (SystemImpl.gl2) {
+				if (files[i].indexOf("-webgl2") >= 0 || files[i].indexOf("runtime-string") >= 0) {
+					SystemImpl.gl.shaderSource(s, shader.sources[i]);
+					break;
+				}
+			}
+			else {
+				if (!highpSupported && (files[i].indexOf("-relaxed") >= 0 || files[i].indexOf("runtime-string") >= 0)) {
+					SystemImpl.gl.shaderSource(s, shader.sources[i]);
+					break;
+				}
+				if (highpSupported && (files[i].indexOf("-relaxed") < 0 || files[i].indexOf("runtime-string") >= 0)) {
+					SystemImpl.gl.shaderSource(s, shader.sources[i]);
+					break;
+				}
+			}
+		}
+		SystemImpl.gl.compileShader(s);
+		if (!SystemImpl.gl.getShaderParameter(s, GL.COMPILE_STATUS)) {
+			var message = "Could not compile shader:\n" + SystemImpl.gl.getShaderInfoLog(s);
+			trace("Error: " + message);
+			throw message;
+		}
+		shader.shader = s;
+	}
+
+	public function getConstantLocation(name: String): kha.graphics4.ConstantLocation {
+		var location = SystemImpl.gl.getUniformLocation(program, name);
+		if (location == null) {
+			trace("Warning: Uniform " + name + " not found.");
+		}
+		var type = GL.FLOAT;
+		var count: Int = SystemImpl.gl.getProgramParameter(program, GL.ACTIVE_UNIFORMS);
+		for (i in 0...count) {
+			var info = SystemImpl.gl.getActiveUniform(program, i);
+			if (info.name == name || info.name == name + "[0]") {
+				type = info.type;
+				break;
+			}
+		}
+		return new kha.js.graphics4.ConstantLocation(location, type);
+	}
+
+	public function getTextureUnit(name: String): kha.graphics4.TextureUnit {
+		var index = findTexture(name);
+		if (index < 0) {
+			var location = SystemImpl.gl.getUniformLocation(program, name);
+			if (location == null) {
+				trace("Warning: Sampler " + name + " not found.");
+			}
+			index = textures.length;
+			textureValues.push(location);
+			textures.push(name);
+		}
+		return new kha.js.graphics4.TextureUnit(index);
+	}
+
+	function findTexture(name: String): Int {
+		for (index in 0...textures.length) {
+			if (textures[index] == name)
+				return index;
+		}
+		return -1;
+	}
+}

Kha/Backends/HTML5/kha/graphics4/VertexBuffer.hx

@@ -0,0 +1,206 @@
+package kha.graphics4;
+
+import kha.arrays.Float32Array;
+import js.html.webgl.GL;
+import kha.arrays.ByteArray;
+import kha.graphics4.Usage;
+import kha.graphics4.VertexStructure;
+
+class VertexBuffer {
+	public var _data: ByteArray;
+
+	var buffer: Dynamic;
+	var mySize: Int;
+	var myStride: Int;
+	var sizes: Array<Int>;
+	var offsets: Array<Int>;
+	var types: Array<Int>;
+	var instanceDataStepRate: Int;
+	var lockStart: Int = 0;
+	var lockEnd: Int = 0;
+
+	public function new(vertexCount: Int, structure: VertexStructure, usage: Usage, instanceDataStepRate: Int = 0, canRead: Bool = false) {
+		this.instanceDataStepRate = instanceDataStepRate;
+		mySize = vertexCount;
+		myStride = 0;
+		for (element in structure.elements) {
+			myStride += VertexStructure.dataByteSize(element.data);
+		}
+
+		buffer = SystemImpl.gl.createBuffer();
+		_data = ByteArray.make(vertexCount * myStride);
+
+		sizes = new Array<Int>();
+		offsets = new Array<Int>();
+		types = new Array<Int>();
+		sizes[structure.elements.length - 1] = 0;
+		offsets[structure.elements.length - 1] = 0;
+		types[structure.elements.length - 1] = 0;
+
+		var offset = 0;
+		var index = 0;
+		for (element in structure.elements) {
+			var size;
+			var type;
+			switch (element.data) {
+				case Float32_1X:
+					size = 1;
+					type = GL.FLOAT;
+				case Float32_2X:
+					size = 2;
+					type = GL.FLOAT;
+				case Float32_3X:
+					size = 3;
+					type = GL.FLOAT;
+				case Float32_4X:
+					size = 4;
+					type = GL.FLOAT;
+				case Float32_4X4:
+					size = 4 * 4;
+					type = GL.FLOAT;
+				case Int8_1X, Int8_1X_Normalized:
+					size = 1;
+					type = GL.BYTE;
+				case Int8_2X, Int8_2X_Normalized:
+					size = 2;
+					type = GL.BYTE;
+				case Int8_4X, Int8_4X_Normalized:
+					size = 4;
+					type = GL.BYTE;
+				case UInt8_1X, UInt8_1X_Normalized:
+					size = 1;
+					type = GL.UNSIGNED_BYTE;
+				case UInt8_2X, UInt8_2X_Normalized:
+					size = 2;
+					type = GL.UNSIGNED_BYTE;
+				case UInt8_4X, UInt8_4X_Normalized:
+					size = 4;
+					type = GL.UNSIGNED_BYTE;
+				case Int16_1X, Int16_1X_Normalized:
+					size = 1;
+					type = GL.SHORT;
+				case Int16_2X, Int16_2X_Normalized:
+					size = 2;
+					type = GL.SHORT;
+				case Int16_4X, Int16_4X_Normalized:
+					size = 4;
+					type = GL.SHORT;
+				case UInt16_1X, UInt16_1X_Normalized:
+					size = 1;
+					type = GL.UNSIGNED_SHORT;
+				case UInt16_2X, UInt16_2X_Normalized:
+					size = 2;
+					type = GL.UNSIGNED_SHORT;
+				case UInt16_4X, UInt16_4X_Normalized:
+					size = 4;
+					type = GL.UNSIGNED_SHORT;
+				case Int32_1X:
+					size = 1;
+					type = GL.INT;
+				case Int32_2X:
+					size = 2;
+					type = GL.INT;
+				case Int32_3X:
+					size = 3;
+					type = GL.INT;
+				case Int32_4X:
+					size = 4;
+					type = GL.INT;
+				case UInt32_1X:
+					size = 1;
+					type = GL.UNSIGNED_INT;
+				case UInt32_2X:
+					size = 2;
+					type = GL.UNSIGNED_INT;
+				case UInt32_3X:
+					size = 3;
+					type = GL.UNSIGNED_INT;
+				case UInt32_4X:
+					size = 4;
+					type = GL.UNSIGNED_INT;
+			}
+			sizes[index] = size;
+			offsets[index] = offset;
+			types[index] = type;
+			offset += VertexStructure.dataByteSize(element.data);
+			++index;
+		}
+
+		SystemImpl.gl.bindBuffer(GL.ARRAY_BUFFER, buffer);
+		SystemImpl.gl.bufferData(GL.ARRAY_BUFFER, _data.subarray(0 * stride(), mySize * stride()),
+			usage == Usage.DynamicUsage ? GL.DYNAMIC_DRAW : GL.STATIC_DRAW);
+	}
+
+	public function delete(): Void {
+		_data = null;
+		SystemImpl.gl.deleteBuffer(buffer);
+	}
+
+	public function lock(?start: Int, ?count: Int): Float32Array {
+		lockStart = start != null ? start : 0;
+		lockEnd = count != null ? start + count : mySize;
+		return _data.subarray(lockStart * stride(), lockEnd * stride());
+	}
+
+	public function unlock(?count: Int): Void {
+		if (count != null)
+			lockEnd = lockStart + count;
+		SystemImpl.gl.bindBuffer(GL.ARRAY_BUFFER, buffer);
+		if (SystemImpl.safari) {
+			SystemImpl.gl.bufferData(GL.ARRAY_BUFFER, _data.subarray(0 * stride(), lockEnd * stride()), GL.DYNAMIC_DRAW);
+		}
+		else {
+			SystemImpl.gl.bufferSubData(GL.ARRAY_BUFFER, lockStart * stride(), _data.subarray(lockStart * stride(), lockEnd * stride()));
+		}
+	}
+
+	public function stride(): Int {
+		return myStride;
+	}
+
+	public function count(): Int {
+		return mySize;
+	}
+
+	public function set(offset: Int): Int {
+		var ext: Dynamic = SystemImpl.gl2 ? true : SystemImpl.gl.getExtension("ANGLE_instanced_arrays");
+		SystemImpl.gl.bindBuffer(GL.ARRAY_BUFFER, buffer);
+		var attributesOffset = 0;
+		for (i in 0...sizes.length) {
+			if (sizes[i] > 4) {
+				var size = sizes[i];
+				var addonOffset = 0;
+				while (size > 0) {
+					SystemImpl.gl.enableVertexAttribArray(offset + attributesOffset);
+					SystemImpl.gl.vertexAttribPointer(offset + attributesOffset, 4, GL.FLOAT, false, myStride, offsets[i] + addonOffset);
+					if (ext) {
+						if (SystemImpl.gl2) {
+							untyped SystemImpl.gl.vertexAttribDivisor(offset + attributesOffset, instanceDataStepRate);
+						}
+						else {
+							ext.vertexAttribDivisorANGLE(offset + attributesOffset, instanceDataStepRate);
+						}
+					}
+					size -= 4;
+					addonOffset += 4 * 4;
+					++attributesOffset;
+				}
+			}
+			else {
+				var normalized = types[i] == GL.FLOAT ? false : true;
+				SystemImpl.gl.enableVertexAttribArray(offset + attributesOffset);
+				SystemImpl.gl.vertexAttribPointer(offset + attributesOffset, sizes[i], types[i], normalized, myStride, offsets[i]);
+				if (ext) {
+					if (SystemImpl.gl2) {
+						untyped SystemImpl.gl.vertexAttribDivisor(offset + attributesOffset, instanceDataStepRate);
+					}
+					else {
+						ext.vertexAttribDivisorANGLE(offset + attributesOffset, instanceDataStepRate);
+					}
+				}
+				++attributesOffset;
+			}
+		}
+		return attributesOffset;
+	}
+}

Kha/Backends/HTML5/kha/graphics4/VertexShader.hx

@@ -0,0 +1,32 @@
+package kha.graphics4;
+
+import js.html.webgl.GL;
+
+class VertexShader {
+	public var sources: Array<String>;
+	public var type: Dynamic;
+	public var shader: Dynamic;
+	public var files: Array<String>;
+
+	public function new(sources: Array<Blob>, files: Array<String>) {
+		this.sources = [];
+		for (source in sources) {
+			this.sources.push(source.toString());
+		}
+		this.type = GL.VERTEX_SHADER;
+		this.shader = null;
+		this.files = files;
+	}
+
+	public static function fromSource(source: String): VertexShader {
+		var shader = new VertexShader([], ["runtime-string"]);
+		shader.sources.push(source);
+		return shader;
+	}
+
+	public function delete(): Void {
+		SystemImpl.gl.deleteShader(shader);
+		shader = null;
+		sources = null;
+	}
+}

Kha/Backends/HTML5/kha/input/MouseImpl.hx

@@ -0,0 +1,76 @@
+package kha.input;
+
+import kha.SystemImpl;
+import kha.input.Mouse;
+
+class MouseImpl extends kha.input.Mouse {
+	public function new() {
+		super();
+	}
+
+	override public function lock(): Void {
+		SystemImpl.lockMouse();
+	}
+
+	override public function unlock(): Void {
+		SystemImpl.unlockMouse();
+	}
+
+	override public function canLock(): Bool {
+		return SystemImpl.canLockMouse();
+	}
+
+	override public function isLocked(): Bool {
+		return SystemImpl.isMouseLocked();
+	}
+
+	override public function notifyOnLockChange(func: Void->Void, error: Void->Void): Void {
+		SystemImpl.notifyOfMouseLockChange(func, error);
+	}
+
+	override public function removeFromLockChange(func: Void->Void, error: Void->Void): Void {
+		SystemImpl.removeFromMouseLockChange(func, error);
+	}
+
+	override public function hideSystemCursor(): Void {
+		SystemImpl.khanvas.style.cursor = "none";
+	}
+
+	override public function showSystemCursor(): Void {
+		SystemImpl.khanvas.style.cursor = "default";
+	}
+
+	override public function setSystemCursor(cursor: MouseCursor): Void {
+		SystemImpl.khanvas.style.cursor = switch (cursor) {
+			case Default: "default";
+			case Pointer: "pointer";
+			case Text: "text";
+			case EastWestResize: "ew-resize";
+			case NorthSouthResize: "ns-resize";
+			case NorthEastResize: "ne-resize";
+			case SouthEastResize: "se-resize";
+			case NorthWestResize: "nw-resize";
+			case SouthWestResize: "sw-resize";
+			case Grab: "grab";
+			case Grabbing: "grabbing";
+			case NotAllowed: "not-allowed";
+			case Wait: "wait";
+			case Crosshair: "crosshair";
+			case Custom(image):
+				var canvas = js.Browser.document.createCanvasElement();
+				canvas.width = image.width;
+				canvas.height = image.height;
+				if (Std.isOfType(image, WebGLImage)) {
+					canvas.getContext2d().drawImage(cast(image, WebGLImage).image, 0, 0);
+				}
+				else {
+					canvas.getContext2d().drawImage(cast(image, CanvasImage).image, 0, 0);
+				}
+				var dataURL = canvas.toDataURL("image/png");
+				dataURL = StringTools.replace(dataURL, "/^data:image\\/(png|jpg);base64,/", "");
+
+				'url(\'$dataURL\'),auto';
+			default: "default";
+		}
+	}
+}

Kha/Backends/HTML5/kha/input/Sensor.hx

@@ -0,0 +1,37 @@
+package kha.input;
+
+import kha.SystemImpl;
+
+class Sensor {
+	static var isInited: Bool = false;
+	static var accelerometer: Sensor = new Sensor();
+	static var gyroscope: Sensor = new Sensor();
+
+	var listeners: Array<Float->Float->Float->Void> = new Array();
+
+	public static function get(type: SensorType): Sensor {
+		switch (type) {
+			case Accelerometer:
+				return accelerometer;
+			case Gyroscope:
+				return gyroscope;
+		}
+	}
+
+	public function notify(listener: Float->Float->Float->Void): Void {
+		if (!isInited) {
+			SystemImpl.initSensor();
+			isInited = true;
+		}
+		listeners.push(listener);
+	}
+
+	function new() {}
+
+	public static function _changed(type: Int, x: Float, y: Float, z: Float): Void {
+		var sensor = get(type == 0 ? SensorType.Accelerometer : SensorType.Gyroscope);
+		for (listener in sensor.listeners) {
+			listener(x, y, z);
+		}
+	}
+}

Kha/Backends/HTML5/kha/js/AEAudioChannel.hx

@@ -0,0 +1,77 @@
+package kha.js;
+
+import js.html.AudioElement;
+import kha.audio1.AudioChannel;
+
+class AEAudioChannel implements kha.audio1.AudioChannel {
+	var element: AudioElement;
+	var stopped = false;
+	var looping: Bool;
+
+	public function new(element: AudioElement, looping: Bool) {
+		this.element = element;
+		this.looping = looping;
+	}
+
+	public function play(): Void {
+		stopped = false;
+		element.play();
+	}
+
+	public function pause(): Void {
+		try {
+			element.pause();
+		}
+		catch (e:Dynamic) {
+			trace(e);
+		}
+	}
+
+	public function stop(): Void {
+		try {
+			element.pause();
+			element.currentTime = 0;
+			stopped = true;
+		}
+		catch (e:Dynamic) {
+			trace(e);
+		}
+	}
+
+	public var length(get, never): Float; // Seconds
+
+	function get_length(): Float {
+		if (Math.isFinite(element.duration)) {
+			return element.duration;
+		}
+		else {
+			return Math.POSITIVE_INFINITY;
+		}
+	}
+
+	public var position(get, set): Float; // Seconds
+
+	function get_position(): Float {
+		return element.currentTime;
+	}
+
+	function set_position(value: Float): Float {
+		return element.currentTime = value;
+	}
+
+	public var volume(get, set): Float;
+
+	function get_volume(): Float {
+		return element.volume;
+	}
+
+	function set_volume(value: Float): Float {
+		return element.volume = value;
+	}
+
+	public var finished(get, never): Bool;
+
+	function get_finished(): Bool {
+		return stopped || (!looping && position >= length);
+	}
+}

Kha/Backends/HTML5/kha/js/AudioElementAudio.hx

@@ -0,0 +1,15 @@
+package kha.js;
+
+@:keep
+class AudioElementAudio {
+	public static function play(sound: Sound, loop: Bool = false): kha.audio1.AudioChannel {
+		return stream(sound, loop);
+	}
+
+	public static function stream(sound: Sound, loop: Bool = false): kha.audio1.AudioChannel {
+		sound.element.loop = loop;
+		var channel = new AEAudioChannel(sound.element, loop);
+		channel.play();
+		return cast channel;
+	}
+}

Kha/Backends/HTML5/kha/js/CanvasGraphics.hx

@@ -0,0 +1,264 @@
+package kha.js;
+
+import kha.Color;
+import kha.graphics2.Graphics;
+import kha.graphics2.ImageScaleQuality;
+import kha.math.FastMatrix3;
+import js.html.CanvasRenderingContext2D;
+
+class CanvasGraphics extends Graphics {
+	var canvas: CanvasRenderingContext2D;
+	var webfont: kha.js.Font;
+	var myColor: Color;
+	var scaleQuality: ImageScaleQuality;
+	var clipping: Bool = false;
+
+	static var instance: CanvasGraphics;
+
+	public function new(canvas: CanvasRenderingContext2D) {
+		super();
+		this.canvas = canvas;
+		instance = this;
+		myColor = Color.fromBytes(0, 0, 0);
+		// webfont = new Font("Arial", new FontStyle(false, false, false), 12);
+		// canvas.globalCompositeOperation = "normal";
+	}
+
+	public static function stringWidth(font: kha.Font, text: String): Float {
+		if (instance == null)
+			return 5 * text.length;
+		else {
+			instance.font = font;
+			return instance.canvas.measureText(text).width;
+		}
+	}
+
+	override public function begin(clear: Bool = true, clearColor: Color = null): Void {
+		if (clear)
+			this.clear(clearColor);
+	}
+
+	override public function clear(color: Color = null): Void {
+		if (color == null)
+			color = 0x00000000;
+		canvas.strokeStyle = "rgba(" + color.Rb + "," + color.Gb + "," + color.Bb + "," + color.A + ")";
+		canvas.fillStyle = "rgba(" + color.Rb + "," + color.Gb + "," + color.Bb + "," + color.A + ")";
+		if (color.A == 0) // if color is transparent, clear the screen. Note: in Canvas, transparent colors will overlay, not overwrite.
+			canvas.clearRect(0, 0, canvas.canvas.width, canvas.canvas.height);
+		else
+			canvas.fillRect(0, 0, canvas.canvas.width, canvas.canvas.height);
+		this.color = myColor;
+	}
+
+	override public function end(): Void {}
+
+	/*override public function translate(x: Float, y: Float) {
+		tx = x;
+		ty = y;
+	}*/
+	override public function drawImage(img: kha.Image, x: Float, y: Float) {
+		canvas.globalAlpha = opacity;
+		canvas.drawImage(cast(img, CanvasImage).image, x, y);
+		canvas.globalAlpha = 1;
+	}
+
+	override public function drawScaledSubImage(image: kha.Image, sx: Float, sy: Float, sw: Float, sh: Float, dx: Float, dy: Float, dw: Float, dh: Float) {
+		canvas.globalAlpha = opacity;
+		try {
+			if (dw < 0 || dh < 0) {
+				canvas.save();
+				canvas.translate(dx, dy);
+				var x = 0.0;
+				var y = 0.0;
+				if (dw < 0) {
+					canvas.scale(-1, 1);
+					x = -dw;
+				}
+				if (dh < 0) {
+					canvas.scale(1, -1);
+					y = -dh;
+				}
+				canvas.drawImage(cast(image, CanvasImage).image, sx, sy, sw, sh, x, y, dw, dh);
+				canvas.restore();
+			}
+			else {
+				canvas.drawImage(cast(image, CanvasImage).image, sx, sy, sw, sh, dx, dy, dw, dh);
+			}
+		}
+		catch (ex:Dynamic) {}
+		canvas.globalAlpha = 1;
+	}
+
+	override function set_color(color: Color): Color {
+		myColor = color;
+		canvas.strokeStyle = "rgba(" + color.Rb + "," + color.Gb + "," + color.Bb + "," + color.A + ")";
+		canvas.fillStyle = "rgba(" + color.Rb + "," + color.Gb + "," + color.Bb + "," + color.A + ")";
+		return color;
+	}
+
+	override function get_color(): Color {
+		return myColor;
+	}
+
+	override function get_imageScaleQuality(): ImageScaleQuality {
+		return scaleQuality;
+	}
+
+	override function set_imageScaleQuality(value: ImageScaleQuality): ImageScaleQuality {
+		if (value == ImageScaleQuality.Low) {
+			untyped canvas.mozImageSmoothingEnabled = false;
+			untyped canvas.webkitImageSmoothingEnabled = false;
+			untyped canvas.msImageSmoothingEnabled = false;
+			canvas.imageSmoothingEnabled = false;
+		}
+		else {
+			untyped canvas.mozImageSmoothingEnabled = true;
+			untyped canvas.webkitImageSmoothingEnabled = true;
+			untyped canvas.msImageSmoothingEnabled = true;
+			canvas.imageSmoothingEnabled = true;
+		}
+		return scaleQuality = value;
+	}
+
+	override public function drawRect(x: Float, y: Float, width: Float, height: Float, strength: Float = 1.0) {
+		canvas.beginPath();
+		var oldStrength = canvas.lineWidth;
+		canvas.lineWidth = Math.round(strength);
+		canvas.rect(x, y, width, height);
+		canvas.stroke();
+		canvas.lineWidth = oldStrength;
+	}
+
+	override public function fillRect(x: Float, y: Float, width: Float, height: Float) {
+		canvas.globalAlpha = opacity * myColor.A;
+		canvas.fillRect(x, y, width, height);
+		canvas.globalAlpha = opacity;
+	}
+
+	public function drawArc(cx: Float, cy: Float, radius: Float, sAngle: Float, eAngle: Float, strength: Float = 1.0, ccw: Bool = false) {
+		_drawArc(cx, cy, radius, sAngle, eAngle, strength, ccw);
+	}
+
+	public function drawCircle(cx: Float, cy: Float, radius: Float, strength: Float = 1.0) {
+		_drawArc(cx, cy, radius, 0, 2 * Math.PI, strength, false);
+	}
+
+	inline function _drawArc(cx: Float, cy: Float, radius: Float, sAngle: Float, eAngle: Float, strength: Float, ccw: Bool) {
+		canvas.beginPath();
+		var oldStrength = canvas.lineWidth;
+		canvas.lineWidth = Math.round(strength);
+		canvas.arc(cx, cy, radius, sAngle, eAngle, ccw);
+		canvas.stroke();
+		canvas.lineWidth = oldStrength;
+	}
+
+	public function fillArc(cx: Float, cy: Float, radius: Float, sAngle: Float, eAngle: Float, ccw: Bool = false) {
+		canvas.beginPath();
+		canvas.arc(cx, cy, radius, sAngle, eAngle, ccw);
+		canvas.fill();
+	}
+
+	public function fillCircle(cx: Float, cy: Float, radius: Float) {
+		canvas.beginPath();
+		canvas.arc(cx, cy, radius, 0, 2 * Math.PI, false);
+		canvas.fill();
+	}
+
+	var bakedQuadCache = new kha.Kravur.AlignedQuad();
+
+	override public function drawString(text: String, x: Float, y: Float) {
+		// canvas.fillText(text, tx + x, ty + y + webfont.getHeight());
+		// canvas.drawImage(cast(webfont.getTexture(), Image).image, 0, 0, 50, 50, tx + x, ty + y, 50, 50);
+
+		var image = webfont.getImage(fontSize, myColor);
+		if (image.width > 0) {
+			// the image created in getImage() is not imediately useable
+			var xpos = x;
+			var ypos = y;
+			for (i in 0...text.length) {
+				var q = webfont.kravur._get(fontSize).getBakedQuad(bakedQuadCache, kha.graphics2.Graphics.fontGlyphs.indexOf(text.charCodeAt(i)), xpos, ypos);
+
+				if (q != null) {
+					if (q.s1 - q.s0 > 0 && q.t1 - q.t0 > 0 && q.x1 - q.x0 > 0 && q.y1 - q.y0 > 0)
+						canvas.drawImage(image, q.s0 * image.width, q.t0 * image.height, (q.s1 - q.s0) * image.width, (q.t1 - q.t0) * image.height, q.x0,
+							q.y0, q.x1 - q.x0, q.y1 - q.y0);
+					xpos += q.xadvance;
+				}
+			}
+		}
+	}
+
+	override public function drawCharacters(text: Array<Int>, start: Int, length: Int, x: Float, y: Float): Void {
+		var image = webfont.getImage(fontSize, myColor);
+		if (image.width > 0) {
+			// the image created in getImage() is not imediately useable
+			var xpos = x;
+			var ypos = y;
+			for (i in start...start + length) {
+				var q = webfont.kravur._get(fontSize).getBakedQuad(bakedQuadCache, kha.graphics2.Graphics.fontGlyphs.indexOf(text[i]), xpos, ypos);
+
+				if (q != null) {
+					if (q.s1 - q.s0 > 0 && q.t1 - q.t0 > 0 && q.x1 - q.x0 > 0 && q.y1 - q.y0 > 0)
+						canvas.drawImage(image, q.s0 * image.width, q.t0 * image.height, (q.s1 - q.s0) * image.width, (q.t1 - q.t0) * image.height, q.x0,
+							q.y0, q.x1 - q.x0, q.y1 - q.y0);
+					xpos += q.xadvance;
+				}
+			}
+		}
+	}
+
+	override function set_font(font: kha.Font): kha.Font {
+		webfont = cast(font, kha.js.Font);
+		// canvas.font = webfont.size + "px " + webfont.name;
+		return cast webfont;
+	}
+
+	override function get_font(): kha.Font {
+		return cast webfont;
+	}
+
+	override public function drawLine(x1: Float, y1: Float, x2: Float, y2: Float, strength: Float = 1.0) {
+		canvas.beginPath();
+		var oldWith = canvas.lineWidth;
+		canvas.lineWidth = Math.round(strength);
+		canvas.moveTo(x1, y1);
+		canvas.lineTo(x2, y2);
+		canvas.moveTo(0, 0);
+		canvas.stroke();
+		canvas.lineWidth = oldWith;
+	}
+
+	override public function fillTriangle(x1: Float, y1: Float, x2: Float, y2: Float, x3: Float, y3: Float) {
+		canvas.beginPath();
+		canvas.moveTo(x1, y1);
+		canvas.lineTo(x2, y2);
+		canvas.lineTo(x3, y3);
+		canvas.closePath();
+		canvas.fill();
+	}
+
+	override public function scissor(x: Int, y: Int, width: Int, height: Int): Void {
+		if (!clipping) {
+			canvas.save();
+			clipping = true;
+		}
+		canvas.beginPath();
+		canvas.rect(x, y, width, height);
+		canvas.clip();
+	}
+
+	override public function disableScissor(): Void {
+		if (clipping) {
+			canvas.restore();
+			clipping = false;
+		}
+	}
+
+	override public function drawVideo(video: kha.Video, x: Float, y: Float, width: Float, height: Float): Void {
+		canvas.drawImage(cast(video, Video).element, x, y, width, height);
+	}
+
+	override public function setTransformation(transformation: FastMatrix3): Void {
+		canvas.setTransform(transformation._00, transformation._01, transformation._10, transformation._11, transformation._20, transformation._21);
+	}
+}

Kha/Backends/HTML5/kha/js/Font.hx

@@ -0,0 +1,77 @@
+package kha.js;
+
+import js.Syntax;
+import haxe.io.Bytes;
+import js.Browser;
+import js.html.ImageElement;
+import kha.Color;
+import kha.Kravur;
+
+@:keepInit
+class Font implements Resource {
+	public var kravur: Kravur;
+
+	var images: Map<Int, Map<Int, ImageElement>> = new Map();
+
+	public function new(blob: Blob) {
+		this.kravur = Syntax.code("new kha_js_Font.Kravur(blob);");
+	}
+
+	public static function fromBytes(bytes: Bytes): Font {
+		return new Font(Blob.fromBytes(bytes));
+	}
+
+	public function height(fontSize: Int): Float {
+		return kravur._get(fontSize).getHeight();
+	}
+
+	public function width(fontSize: Int, str: String): Float {
+		return kravur._get(fontSize).stringWidth(str);
+	}
+
+	public function widthOfCharacters(fontSize: Int, characters: Array<Int>, start: Int, length: Int): Float {
+		return kravur._get(fontSize).charactersWidth(characters, start, length);
+	}
+
+	public function baseline(fontSize: Int): Float {
+		return kravur._get(fontSize).getBaselinePosition();
+	}
+
+	public function getImage(fontSize: Int, color: Color): ImageElement {
+		var glyphs = kha.graphics2.Graphics.fontGlyphs;
+		var imageIndex = fontSize * 10000 + glyphs.length;
+		if (!images.exists(imageIndex)) {
+			images[imageIndex] = new Map();
+		}
+		if (!images[imageIndex].exists(color.value)) {
+			var kravur = this.kravur._get(fontSize);
+			var canvas = Browser.document.createCanvasElement();
+			canvas.width = kravur.width;
+			canvas.height = kravur.height;
+			var ctx = canvas.getContext("2d");
+			ctx.fillStyle = "black";
+			ctx.fillRect(0, 0, kravur.width, kravur.height);
+
+			var imageData = ctx.getImageData(0, 0, kravur.width, kravur.height);
+			var bytes = cast(kravur.getTexture(), CanvasImage).bytes;
+			for (i in 0...bytes.length) {
+				imageData.data[i * 4 + 0] = color.Rb;
+				imageData.data[i * 4 + 1] = color.Gb;
+				imageData.data[i * 4 + 2] = color.Bb;
+				imageData.data[i * 4 + 3] = bytes.get(i);
+			}
+			ctx.putImageData(imageData, 0, 0);
+
+			var img = Browser.document.createImageElement();
+			img.src = canvas.toDataURL("image/png");
+			images[imageIndex][color.value] = img;
+			return img;
+		}
+		return images[imageIndex][color.value];
+	}
+
+	public function unload(): Void {
+		kravur = null;
+		images = null;
+	}
+}

Kha/Backends/HTML5/kha/js/MobileWebAudio.hx

@@ -0,0 +1,32 @@
+package kha.js;
+
+import js.Syntax;
+import js.html.audio.AudioContext;
+
+@:keep
+class MobileWebAudio {
+	@:noCompletion public static var _context: AudioContext;
+
+	@:noCompletion public static function _init(): Void {
+		try {
+			_context = new AudioContext();
+			return;
+		}
+		catch (e:Dynamic) {}
+		try {
+			Syntax.code("this._context = new webkitAudioContext();");
+			return;
+		}
+		catch (e:Dynamic) {}
+	}
+
+	public static function play(sound: Sound, loop: Bool = false): kha.audio1.AudioChannel {
+		var channel = new MobileWebAudioChannel(cast sound, loop);
+		channel.play();
+		return channel;
+	}
+
+	public static function stream(sound: Sound, loop: Bool = false): kha.audio1.AudioChannel {
+		return play(sound, loop);
+	}
+}

Kha/Backends/HTML5/kha/js/MobileWebAudioChannel.hx

@@ -0,0 +1,105 @@
+package kha.js;
+
+import js.html.audio.AudioBuffer;
+import js.html.audio.AudioBufferSourceNode;
+import js.html.audio.GainNode;
+
+class MobileWebAudioChannel implements kha.audio1.AudioChannel {
+	var buffer: AudioBuffer;
+	var loop: Bool;
+	var source: AudioBufferSourceNode;
+	var gain: GainNode;
+	var startTime: Float;
+	var pauseTime: Float;
+	var paused: Bool = false;
+	var stopped: Bool = false;
+
+	public function new(sound: MobileWebAudioSound, loop: Bool) {
+		this.buffer = sound._buffer;
+		this.loop = loop;
+		createSource();
+	}
+
+	function createSource(): Void {
+		source = MobileWebAudio._context.createBufferSource();
+		source.loop = loop;
+		source.buffer = buffer;
+		source.onended = function() {
+			stopped = true;
+		}
+		gain = MobileWebAudio._context.createGain();
+		source.connect(gain);
+		gain.connect(MobileWebAudio._context.destination);
+	}
+
+	public function play(): Void {
+		if (paused || stopped) {
+			createSource();
+		}
+		stopped = false;
+		if (paused) {
+			paused = false;
+			startTime = MobileWebAudio._context.currentTime - pauseTime;
+			source.start(0, pauseTime);
+		}
+		else {
+			startTime = MobileWebAudio._context.currentTime;
+			source.start();
+		}
+	}
+
+	public function pause(): Void {
+		final wasStopped = paused || stopped;
+		pauseTime = MobileWebAudio._context.currentTime - startTime;
+		paused = true;
+		if (wasStopped)
+			return;
+		source.stop();
+	}
+
+	public function stop(): Void {
+		final wasStopped = paused || stopped;
+		paused = false;
+		stopped = true;
+		if (wasStopped)
+			return;
+		source.stop();
+	}
+
+	public var length(get, never): Float; // Seconds
+
+	function get_length(): Float {
+		return source.buffer.duration;
+	}
+
+	public var position(get, set): Float; // Seconds
+
+	function get_position(): Float {
+		if (stopped)
+			return length;
+		if (paused)
+			return pauseTime;
+		else
+			return MobileWebAudio._context.currentTime - startTime;
+	}
+
+	function set_position(value: Float): Float {
+		return value;
+	}
+
+	public var volume(get, set): Float;
+
+	function get_volume(): Float {
+		return gain.gain.value;
+	}
+
+	function set_volume(value: Float): Float {
+		return gain.gain.value = value;
+	}
+
+	public var finished(get, never): Bool;
+
+	function get_finished(): Bool {
+		return stopped;
+	}
+}

Kha/Backends/HTML5/kha/js/MobileWebAudioSound.hx

@@ -0,0 +1,37 @@
+package kha.js;
+
+import haxe.io.Bytes;
+import js.html.XMLHttpRequest;
+
+class MobileWebAudioSound extends kha.Sound {
+	public var _buffer: Dynamic;
+
+	public function new(filename: String, done: kha.Sound->Void, failed: AssetError->Void) {
+		super();
+		var request = untyped new XMLHttpRequest();
+		request.open("GET", filename, true);
+		request.responseType = "arraybuffer";
+
+		request.onerror = function() {
+			failed({url: filename});
+		};
+
+		request.onload = function() {
+			compressedData = Bytes.ofData(request.response);
+			uncompressedData = null;
+			MobileWebAudio._context.decodeAudioData(compressedData.getData(), function(buffer) {
+				length = buffer.duration;
+				channels = buffer.numberOfChannels;
+				_buffer = buffer;
+				done(this);
+			}, function() {
+				failed({url: filename, error: "Audio format not supported"});
+			});
+		};
+		request.send(null);
+	}
+
+	override public function uncompress(done: Void->Void): Void {
+		done();
+	}
+}

Kha/Backends/HTML5/kha/js/Sound.hx

@@ -0,0 +1,132 @@
+package kha.js;
+
+import js.Browser;
+import js.html.AudioElement;
+import js.html.ErrorEvent;
+import js.html.Event;
+import js.html.MediaError;
+
+using StringTools;
+
+/*class SoundChannel extends kha.SoundChannel {
+	private var element: Dynamic;
+
+	public function new(element: Dynamic) {
+		super();
+		this.element = element;
+	}
+
+	override public function play(): Void {
+		super.play();
+		element.play();
+	} 
+
+	override public function pause(): Void {
+		try {
+			element.pause();
+		}
+		catch (e: Dynamic) {
+			trace(e);
+		}
+	}
+
+	override public function stop(): Void {
+		try {
+			element.pause();
+			element.currentTime = 0;
+			super.stop();
+		}
+		catch (e: Dynamic) {
+			trace(e);
+		}
+	}
+
+	override public function getCurrentPos(): Int {
+		return Math.ceil(element.currentTime * 1000);  // Miliseconds
+	}
+
+	override public function getLength(): Int {
+		if (Math.isFinite(element.duration)) {
+			return Math.floor(element.duration * 1000); // Miliseconds
+		}
+		else {
+			return -1;
+		}
+	}
+}*/
+class Sound extends kha.Sound {
+	var filenames: Array<String>;
+
+	static var loading: Array<Sound> = new Array();
+
+	var done: kha.Sound->Void;
+	var failed: AssetError->Void;
+
+	public var element: AudioElement;
+
+	public function new(filenames: Array<String>, done: kha.Sound->Void, failed: AssetError->Void) {
+		super();
+
+		this.done = done;
+		this.failed = failed;
+		loading.push(this); // prevent gc from removing this
+
+		element = Browser.document.createAudioElement();
+
+		this.filenames = [];
+		for (filename in filenames) {
+			if (element.canPlayType("audio/ogg") != "" && filename.endsWith(".ogg"))
+				this.filenames.push(filename);
+			if (element.canPlayType("audio/mp4") != "" && filename.endsWith(".mp4"))
+				this.filenames.push(filename);
+			if (element.canPlayType("audio/wav") != "" && filename.endsWith(".wav"))
+				this.filenames.push(filename);
+		}
+
+		element.addEventListener("error", errorListener, false);
+		element.addEventListener("canplay", canPlayThroughListener, false);
+
+		element.src = this.filenames[0];
+		element.preload = "auto";
+		element.load();
+	}
+
+	// override public function play(): kha.SoundChannel {
+	//	try {
+	//		element.play();
+	//	}
+	//	catch (e: Dynamic) {
+	//		trace(e);
+	//	}
+	//	return new SoundChannel(element);
+	// }
+	function errorListener(eventInfo: ErrorEvent): Void {
+		if (element.error.code == MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED) {
+			for (i in 0...filenames.length - 1) {
+				if (element.src == filenames[i]) {
+					// try loading with next extension:
+					element.src = filenames[i + 1];
+					return;
+				}
+			}
+		}
+
+		failed({url: element.src});
+		finishAsset();
+	}
+
+	function canPlayThroughListener(eventInfo: Event): Void {
+		finishAsset();
+	}
+
+	function finishAsset() {
+		element.removeEventListener("error", errorListener, false);
+		element.removeEventListener("canplaythrough", canPlayThroughListener, false);
+		done(this);
+		loading.remove(this);
+	}
+
+	override public function uncompress(done: Void->Void): Void {
+		done();
+	}
+}

Kha/Backends/HTML5/kha/js/Video.hx

@@ -0,0 +1,147 @@
+package kha.js;
+
+import js.Browser;
+import js.html.ErrorEvent;
+import js.html.Event;
+import js.html.MediaError;
+import js.html.VideoElement;
+
+using StringTools;
+
+class Video extends kha.Video {
+	public var element: VideoElement;
+	public var texture: Image;
+
+	var filenames: Array<String>;
+	var done: kha.Video->Void;
+
+	function new() {
+		super();
+	}
+
+	public static function fromElement(element: js.html.VideoElement): Video {
+		var video = new Video();
+		video.element = element;
+		if (SystemImpl.gl != null)
+			video.texture = Image.fromVideo(video);
+		return video;
+	}
+
+	public static function fromFile(filenames: Array<String>, done: kha.Video->Void): Void {
+		var video = new Video();
+
+		video.done = done;
+
+		video.element = cast Browser.document.createElement("video");
+
+		video.filenames = [];
+		for (filename in filenames) {
+			if (video.element.canPlayType("video/webm") != "" && filename.endsWith(".webm"))
+				video.filenames.push(filename);
+			#if !kha_debug_html5
+			if (video.element.canPlayType("video/mp4") != "" && filename.endsWith(".mp4"))
+				video.filenames.push(filename);
+			#end
+		}
+
+		video.element.addEventListener("error", video.errorListener, false);
+		video.element.addEventListener("canplaythrough", video.canPlayThroughListener, false);
+
+		video.element.preload = "auto";
+		video.element.src = video.filenames[0];
+	}
+
+	override public function width(): Int {
+		return element.videoWidth;
+	}
+
+	override public function height(): Int {
+		return element.videoHeight;
+	}
+
+	override public function play(loop: Bool = false): Void {
+		try {
+			element.loop = loop;
+			element.play();
+		}
+		catch (e:Dynamic) {
+			trace(e);
+		}
+	}
+
+	override public function pause(): Void {
+		try {
+			element.pause();
+		}
+		catch (e:Dynamic) {
+			trace(e);
+		}
+	}
+
+	override public function stop(): Void {
+		try {
+			element.pause();
+			element.currentTime = 0;
+		}
+		catch (e:Dynamic) {
+			trace(e);
+		}
+	}
+
+	override public function getCurrentPos(): Int {
+		return Math.ceil(element.currentTime * 1000); // Miliseconds
+	}
+
+	override function get_position(): Int {
+		return Math.ceil(element.currentTime * 1000);
+	}
+
+	override function set_position(value: Int): Int {
+		element.currentTime = value / 1000;
+		return value;
+	}
+
+	override public function getVolume(): Float {
+		return element.volume;
+	}
+
+	override public function setVolume(volume: Float): Void {
+		element.volume = volume;
+	}
+
+	override public function getLength(): Int {
+		if (Math.isFinite(element.duration)) {
+			return Math.floor(element.duration * 1000); // Miliseconds
+		}
+		else {
+			return -1;
+		}
+	}
+
+	function errorListener(eventInfo: ErrorEvent): Void {
+		if (element.error.code == MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED) {
+			for (i in 0...filenames.length - 1) {
+				if (element.src == filenames[i]) {
+					// try loading with next extension:
+					element.src = filenames[i + 1];
+					return;
+				}
+			}
+		}
+
+		trace("Error loading " + element.src);
+		finishAsset();
+	}
+
+	function canPlayThroughListener(eventInfo: Event): Void {
+		finishAsset();
+	}
+
+	function finishAsset() {
+		element.removeEventListener("error", errorListener, false);
+		element.removeEventListener("canplaythrough", canPlayThroughListener, false);
+		if (SystemImpl.gl != null)
+			texture = Image.fromVideo(this);
+		done(this);
+	}
+}

Kha/Backends/HTML5/kha/js/WebAudioSound.hx

@@ -0,0 +1,114 @@
+package kha.js;
+
+import haxe.io.Bytes;
+import js.Browser;
+import js.html.XMLHttpRequest;
+import kha.audio2.Audio;
+
+/*
+	class WebAudioChannel extends kha.SoundChannel {
+	private var buffer: Dynamic;
+	private var startTime: Float;
+	private var offset: Float;
+	private var source: Dynamic;
+
+	public function new(buffer: Dynamic) {
+		super();
+		this.offset = 0;
+		this.buffer = buffer;
+		this.startTime = Audio._context.currentTime; 
+		this.source = Audio._context.createBufferSource();
+		this.source.buffer = this.buffer;
+		this.source.connect(Audio._context.destination);
+		this.source.start(0);
+	}
+
+	override public function play(): Void {
+		if (source != null) return;
+		super.play();
+		startTime = Audio._context.currentTime - offset;
+		source.start(0, offset);
+	}
+
+	override public function pause(): Void {
+		source.stop();
+		offset = Audio._context.currentTime - startTime;
+		startTime = -1;
+		source = null;
+	}
+
+	override public function stop(): Void {
+		source.stop();
+		source = null;
+		offset = 0;
+		startTime = -1;
+		super.stop();
+	}
+
+	override public function getCurrentPos(): Int {
+		if (startTime < 0) return Math.ceil(offset * 1000);
+		else return Math.ceil((Audio._context.currentTime - startTime) * 1000); //Miliseconds
+	}
+
+	override public function getLength(): Int {
+		return Math.floor(buffer.duration * 1000); //Miliseconds
+	}
+	}
+ */
+class WebAudioSound extends kha.Sound {
+	public function new(filename: String, done: kha.Sound->Void, failed: AssetError->Void) {
+		super();
+		var request = untyped new XMLHttpRequest();
+		request.open("GET", filename, true);
+		request.responseType = "arraybuffer";
+
+		request.onerror = function() {
+			failed({url: filename});
+		};
+
+		request.onload = function() {
+			compressedData = Bytes.ofData(request.response);
+			uncompressedData = null;
+			done(this);
+		};
+		request.send(null);
+	}
+
+	function superUncompress(done: Void->Void): Void {
+		super.uncompress(done);
+	}
+
+	override public function uncompress(done: Void->Void): Void {
+		Audio._context.decodeAudioData(compressedData.getData(), function(buffer: js.html.audio.AudioBuffer) {
+			final ch0 = buffer.getChannelData(0);
+			final ch1 = buffer.numberOfChannels == 1 ? ch0 : buffer.getChannelData(1);
+			final len = ch0.length;
+			uncompressedData = new kha.arrays.Float32Array(len * 2);
+			length = buffer.duration;
+			channels = buffer.numberOfChannels;
+			sampleRate = Math.round(buffer.sampleRate);
+			var idx = 0;
+			var i = 0;
+			final lidx = len * 2;
+			function uncompressInner() {
+				var chk_len = idx + 11025;
+				var next_chk = chk_len > lidx ? lidx : chk_len;
+				while (idx < next_chk) {
+					uncompressedData[idx] = ch0[i];
+					uncompressedData[idx + 1] = ch1[i];
+					idx += 2;
+					++i;
+				}
+				if (idx < lidx)
+					js.Browser.window.setTimeout(uncompressInner, 0);
+				else {
+					compressedData = null;
+					done();
+				}
+			};
+			uncompressInner();
+		}, function() {
+			superUncompress(done);
+		});
+	}
+}

Kha/Backends/HTML5/kha/js/graphics4/ConstantLocation.hx

@@ -0,0 +1,11 @@
+package kha.js.graphics4;
+
+class ConstantLocation implements kha.graphics4.ConstantLocation {
+	public var value: Dynamic;
+	public var type: Int;
+
+	public function new(value: Dynamic, type: Int) {
+		this.value = value;
+		this.type = type;
+	}
+}

Kha/Backends/HTML5/kha/js/graphics4/Graphics.hx

@@ -0,0 +1,738 @@
+package kha.js.graphics4;
+
+import js.html.webgl.GL2;
+import kha.graphics4.StencilValue;
+import kha.arrays.Float32Array;
+import kha.arrays.Int32Array;
+import js.html.webgl.GL;
+import kha.graphics4.BlendingFactor;
+import kha.graphics4.BlendingOperation;
+import kha.graphics4.CompareMode;
+import kha.graphics4.CubeMap;
+import kha.graphics4.CullMode;
+import kha.graphics4.IndexBuffer;
+import kha.graphics4.MipMapFilter;
+import kha.graphics4.PipelineState;
+import kha.graphics4.StencilAction;
+import kha.graphics4.TextureAddressing;
+import kha.graphics4.TextureFilter;
+import kha.graphics4.Usage;
+import kha.graphics4.VertexBuffer;
+import kha.graphics4.VertexStructure;
+import kha.Image;
+import kha.math.FastMatrix3;
+import kha.math.FastMatrix4;
+import kha.math.FastVector2;
+import kha.math.FastVector3;
+import kha.math.FastVector4;
+import kha.WebGLImage;
+
+class Graphics implements kha.graphics4.Graphics {
+	var currentPipeline: PipelineState = null;
+	var depthTest: Bool = false;
+	var depthMask: Bool = false;
+	var colorMaskRed: Bool = true;
+	var colorMaskGreen: Bool = true;
+	var colorMaskBlue: Bool = true;
+	var colorMaskAlpha: Bool = true;
+	var indicesCount: Int;
+	var renderTarget: Canvas;
+	var renderTargetFrameBuffer: Dynamic;
+	var renderTargetMSAA: Dynamic;
+	var renderTargetTexture: Dynamic;
+	var isCubeMap: Bool = false;
+	var isDepthAttachment: Bool = false;
+	var instancedExtension: Dynamic;
+	var blendMinMaxExtension: Dynamic;
+
+	static var current: Graphics = null;
+	static var useVertexAttributes: Int = 0;
+
+	public function new(renderTarget: Canvas = null) {
+		this.renderTarget = renderTarget;
+		init();
+		if (SystemImpl.gl2) {
+			instancedExtension = true;
+		}
+		else {
+			instancedExtension = SystemImpl.gl.getExtension("ANGLE_instanced_arrays");
+			blendMinMaxExtension = SystemImpl.gl.getExtension("EXT_blend_minmax");
+		}
+	}
+
+	function init() {
+		if (renderTarget == null)
+			return;
+		isCubeMap = Std.isOfType(renderTarget, CubeMap);
+		if (isCubeMap) {
+			var cubeMap: CubeMap = cast(renderTarget, CubeMap);
+			renderTargetFrameBuffer = cubeMap.frameBuffer;
+			renderTargetTexture = cubeMap.texture;
+			isDepthAttachment = cubeMap.isDepthAttachment;
+		}
+		else {
+			var image: WebGLImage = cast(renderTarget, WebGLImage);
+			renderTargetFrameBuffer = image.frameBuffer;
+			renderTargetMSAA = image.MSAAFrameBuffer;
+			renderTargetTexture = image.texture;
+		}
+	}
+
+	public function begin(additionalRenderTargets: Array<Canvas> = null): Void {
+		if (current == null) {
+			current = this;
+		}
+		else {
+			throw "End before you begin";
+		}
+
+		SystemImpl.gl.enable(GL.BLEND);
+		SystemImpl.gl.blendFunc(GL.SRC_ALPHA, GL.ONE_MINUS_SRC_ALPHA);
+		if (renderTarget == null) {
+			SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, null);
+			SystemImpl.gl.viewport(0, 0, System.windowWidth(), System.windowHeight());
+		}
+		else {
+			SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, renderTargetFrameBuffer);
+			// if (isCubeMap) SystemImpl.gl.framebufferTexture(GL.FRAMEBUFFER, GL.COLOR_ATTACHMENT0, GL.TEXTURE_CUBE_MAP, renderTargetTexture, 0); // Layered
+			SystemImpl.gl.viewport(0, 0, renderTarget.width, renderTarget.height);
+			if (additionalRenderTargets != null) {
+				SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, SystemImpl.drawBuffers.COLOR_ATTACHMENT0_WEBGL, GL.TEXTURE_2D, renderTargetTexture, 0);
+				for (i in 0...additionalRenderTargets.length) {
+					SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, SystemImpl.drawBuffers.COLOR_ATTACHMENT0_WEBGL + i + 1, GL.TEXTURE_2D,
+						cast(additionalRenderTargets[i], WebGLImage).texture, 0);
+				}
+				var attachments = [SystemImpl.drawBuffers.COLOR_ATTACHMENT0_WEBGL];
+				for (i in 0...additionalRenderTargets.length) {
+					attachments.push(SystemImpl.drawBuffers.COLOR_ATTACHMENT0_WEBGL + i + 1);
+				}
+				SystemImpl.gl2 ? untyped SystemImpl.gl.drawBuffers(attachments) : SystemImpl.drawBuffers.drawBuffersWEBGL(attachments);
+			}
+		}
+	}
+
+	public function beginFace(face: Int): Void {
+		if (current == null) {
+			current = this;
+		}
+		else {
+			throw "End before you begin";
+		}
+
+		SystemImpl.gl.enable(GL.BLEND);
+		SystemImpl.gl.blendFunc(GL.SRC_ALPHA, GL.ONE_MINUS_SRC_ALPHA);
+		SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, renderTargetFrameBuffer);
+		SystemImpl.gl.framebufferTexture2D(GL.FRAMEBUFFER, isDepthAttachment ? GL.DEPTH_ATTACHMENT : GL.COLOR_ATTACHMENT0,
+			GL.TEXTURE_CUBE_MAP_POSITIVE_X + face, renderTargetTexture, 0);
+		SystemImpl.gl.viewport(0, 0, renderTarget.width, renderTarget.height);
+	}
+
+	public function beginEye(eye: Int): Void {
+		if (current == null) {
+			current = this;
+		}
+		else {
+			throw "End before you begin";
+		}
+
+		SystemImpl.gl.enable(GL.BLEND);
+		SystemImpl.gl.blendFunc(GL.SRC_ALPHA, GL.ONE_MINUS_SRC_ALPHA);
+		SystemImpl.gl.bindFramebuffer(GL.FRAMEBUFFER, null);
+		if (eye == 0) {
+			SystemImpl.gl.viewport(0, 0, Std.int(System.windowWidth() * 0.5), System.windowHeight());
+		}
+		else {
+			SystemImpl.gl.viewport(Std.int(System.windowWidth() * 0.5), 0, Std.int(System.windowWidth() * 0.5), System.windowHeight());
+		}
+	}
+
+	public function end(): Void {
+		if (current == this) {
+			current = null;
+		}
+		else {
+			throw "Begin before you end";
+		}
+
+		if (renderTargetMSAA != null) {
+			untyped SystemImpl.gl.bindFramebuffer(SystemImpl.gl.READ_FRAMEBUFFER, renderTargetFrameBuffer);
+			untyped SystemImpl.gl.bindFramebuffer(SystemImpl.gl.DRAW_FRAMEBUFFER, renderTargetMSAA);
+			untyped SystemImpl.gl.blitFramebuffer(0, 0, renderTarget.width, renderTarget.height, 0, 0, renderTarget.width, renderTarget.height,
+				GL.COLOR_BUFFER_BIT, GL.NEAREST);
+		}
+		#if (debug || kha_debug_html5)
+		var error = SystemImpl.gl.getError();
+		switch (error) {
+			case GL.NO_ERROR:
+
+			case GL.INVALID_ENUM:
+				trace("WebGL error: Invalid enum");
+			case GL.INVALID_VALUE:
+				trace("WebGL error: Invalid value");
+			case GL.INVALID_OPERATION:
+				trace("WebGL error: Invalid operation");
+			case GL.INVALID_FRAMEBUFFER_OPERATION:
+				trace("WebGL error: Invalid framebuffer operation");
+			case GL.OUT_OF_MEMORY:
+				trace("WebGL error: Out of memory");
+			case GL.CONTEXT_LOST_WEBGL:
+				trace("WebGL error: Context lost");
+			default:
+				trace("Unknown WebGL error");
+		}
+		#end
+	}
+
+	public function flush(): Void {}
+
+	public function vsynced(): Bool {
+		return true;
+	}
+
+	public function refreshRate(): Int {
+		return 60;
+	}
+
+	public function clear(?color: Color, ?depth: Float, ?stencil: Int): Void {
+		var clearMask: Int = 0;
+		if (color != null) {
+			clearMask |= GL.COLOR_BUFFER_BIT;
+			SystemImpl.gl.colorMask(true, true, true, true);
+			SystemImpl.gl.clearColor(color.R, color.G, color.B, color.A);
+		}
+		if (depth != null) {
+			clearMask |= GL.DEPTH_BUFFER_BIT;
+			SystemImpl.gl.enable(GL.DEPTH_TEST);
+			SystemImpl.gl.depthMask(true);
+			SystemImpl.gl.clearDepth(depth);
+		}
+		if (stencil != null) {
+			clearMask |= GL.STENCIL_BUFFER_BIT;
+			SystemImpl.gl.enable(GL.STENCIL_TEST);
+			SystemImpl.gl.stencilMask(0xff);
+			SystemImpl.gl.clearStencil(stencil);
+		}
+		SystemImpl.gl.clear(clearMask);
+		SystemImpl.gl.colorMask(colorMaskRed, colorMaskGreen, colorMaskBlue, colorMaskAlpha);
+		if (depthTest) {
+			SystemImpl.gl.enable(GL.DEPTH_TEST);
+		}
+		else {
+			SystemImpl.gl.disable(GL.DEPTH_TEST);
+		}
+		SystemImpl.gl.depthMask(depthMask);
+	}
+
+	public function viewport(x: Int, y: Int, width: Int, height: Int): Void {
+		if (renderTarget == null) {
+			SystemImpl.gl.viewport(x, System.windowHeight(0) - y - height, width, height);
+		}
+		else {
+			SystemImpl.gl.viewport(x, y, width, height);
+		}
+	}
+
+	public function scissor(x: Int, y: Int, width: Int, height: Int): Void {
+		SystemImpl.gl.enable(GL.SCISSOR_TEST);
+		if (renderTarget == null) {
+			SystemImpl.gl.scissor(x, System.windowHeight(0) - y - height, width, height);
+		}
+		else {
+			SystemImpl.gl.scissor(x, y, width, height);
+		}
+	}
+
+	public function disableScissor(): Void {
+		SystemImpl.gl.disable(GL.SCISSOR_TEST);
+	}
+
+	public function setDepthMode(write: Bool, mode: CompareMode): Void {
+		switch (mode) {
+			case Always:
+				write ? SystemImpl.gl.enable(GL.DEPTH_TEST) : SystemImpl.gl.disable(GL.DEPTH_TEST);
+				depthTest = write;
+				SystemImpl.gl.depthFunc(GL.ALWAYS);
+			case Never:
+				SystemImpl.gl.enable(GL.DEPTH_TEST);
+				depthTest = true;
+				SystemImpl.gl.depthFunc(GL.NEVER);
+			case Equal:
+				SystemImpl.gl.enable(GL.DEPTH_TEST);
+				depthTest = true;
+				SystemImpl.gl.depthFunc(GL.EQUAL);
+			case NotEqual:
+				SystemImpl.gl.enable(GL.DEPTH_TEST);
+				depthTest = true;
+				SystemImpl.gl.depthFunc(GL.NOTEQUAL);
+			case Less:
+				SystemImpl.gl.enable(GL.DEPTH_TEST);
+				depthTest = true;
+				SystemImpl.gl.depthFunc(GL.LESS);
+			case LessEqual:
+				SystemImpl.gl.enable(GL.DEPTH_TEST);
+				depthTest = true;
+				SystemImpl.gl.depthFunc(GL.LEQUAL);
+			case Greater:
+				SystemImpl.gl.enable(GL.DEPTH_TEST);
+				depthTest = true;
+				SystemImpl.gl.depthFunc(GL.GREATER);
+			case GreaterEqual:
+				SystemImpl.gl.enable(GL.DEPTH_TEST);
+				depthTest = true;
+				SystemImpl.gl.depthFunc(GL.GEQUAL);
+		}
+		SystemImpl.gl.depthMask(write);
+		depthMask = write;
+	}
+
+	static function getBlendFunc(factor: BlendingFactor): Int {
+		switch (factor) {
+			case BlendZero, Undefined:
+				return GL.ZERO;
+			case BlendOne:
+				return GL.ONE;
+			case SourceAlpha:
+				return GL.SRC_ALPHA;
+			case DestinationAlpha:
+				return GL.DST_ALPHA;
+			case InverseSourceAlpha:
+				return GL.ONE_MINUS_SRC_ALPHA;
+			case InverseDestinationAlpha:
+				return GL.ONE_MINUS_DST_ALPHA;
+			case SourceColor:
+				return GL.SRC_COLOR;
+			case DestinationColor:
+				return GL.DST_COLOR;
+			case InverseSourceColor:
+				return GL.ONE_MINUS_SRC_COLOR;
+			case InverseDestinationColor:
+				return GL.ONE_MINUS_DST_COLOR;
+		}
+	}
+
+	static function getBlendOp(op: BlendingOperation): Int {
+		switch (op) {
+			case Add:
+				return GL.FUNC_ADD;
+			case Subtract:
+				return GL.FUNC_SUBTRACT;
+			case ReverseSubtract:
+				return GL.FUNC_REVERSE_SUBTRACT;
+			case Min:
+				return 0x8007;
+			case Max:
+				return 0x8008;
+		}
+	}
+
+	public function setBlendingMode(source: BlendingFactor, destination: BlendingFactor, operation: BlendingOperation, alphaSource: BlendingFactor,
+			alphaDestination: BlendingFactor, alphaOperation: BlendingOperation): Void {
+		if (source == BlendOne && destination == BlendZero) {
+			SystemImpl.gl.disable(GL.BLEND);
+		}
+		else {
+			SystemImpl.gl.enable(GL.BLEND);
+			SystemImpl.gl.blendFuncSeparate(getBlendFunc(source), getBlendFunc(destination), getBlendFunc(alphaSource), getBlendFunc(alphaDestination));
+			SystemImpl.gl.blendEquationSeparate(getBlendOp(operation), getBlendOp(alphaOperation));
+		}
+	}
+
+	public function createVertexBuffer(vertexCount: Int, structure: VertexStructure, usage: Usage, canRead: Bool = false): kha.graphics4.VertexBuffer {
+		return new VertexBuffer(vertexCount, structure, usage);
+	}
+
+	public function setVertexBuffer(vertexBuffer: kha.graphics4.VertexBuffer): Void {
+		for (i in 0...useVertexAttributes) {
+			SystemImpl.gl.disableVertexAttribArray(i);
+		}
+		useVertexAttributes = vertexBuffer.set(0);
+	}
+
+	public function setVertexBuffers(vertexBuffers: Array<kha.graphics4.VertexBuffer>): Void {
+		for (i in 0...useVertexAttributes) {
+			SystemImpl.gl.disableVertexAttribArray(i);
+		}
+		var offset: Int = 0;
+		for (vertexBuffer in vertexBuffers) {
+			offset += vertexBuffer.set(offset);
+		}
+		useVertexAttributes = offset;
+	}
+
+	public function createIndexBuffer(indexCount: Int, usage: Usage, canRead: Bool = false): kha.graphics4.IndexBuffer {
+		return new IndexBuffer(indexCount, usage);
+	}
+
+	public function setIndexBuffer(indexBuffer: kha.graphics4.IndexBuffer): Void {
+		indicesCount = indexBuffer.count();
+		indexBuffer.set();
+	}
+
+	// public function maxTextureSize(): Int {
+	//	return Sys.gl == null ? 8192 : Sys.gl.getParameter(Sys.gl.MAX_TEXTURE_SIZE);
+	// }
+	// public function supportsNonPow2Textures(): Bool {
+	//	return false;
+	// }
+
+	public function setTexture(stage: kha.graphics4.TextureUnit, texture: kha.Image): Void {
+		if (texture == null) {
+			SystemImpl.gl.activeTexture(GL.TEXTURE0 + (cast stage : TextureUnit).value);
+			SystemImpl.gl.bindTexture(GL.TEXTURE_2D, null);
+		}
+		else {
+			cast(texture, WebGLImage).set((cast stage : TextureUnit).value);
+		}
+	}
+
+	public function setTextureDepth(stage: kha.graphics4.TextureUnit, texture: kha.Image): Void {
+		cast(texture, WebGLImage).setDepth((cast stage : TextureUnit).value);
+	}
+
+	public function setTextureArray(unit: kha.graphics4.TextureUnit, texture: kha.Image): Void {
+		// not implemented yet.
+	}
+
+	public function setVideoTexture(unit: kha.graphics4.TextureUnit, texture: kha.Video): Void {
+		if (texture == null) {
+			SystemImpl.gl.activeTexture(GL.TEXTURE0 + (cast unit : TextureUnit).value);
+			SystemImpl.gl.bindTexture(GL.TEXTURE_2D, null);
+		}
+		else {
+			cast((cast texture : kha.js.Video).texture, WebGLImage).set((cast unit : TextureUnit).value);
+		}
+	}
+
+	public function setImageTexture(unit: kha.graphics4.TextureUnit, texture: kha.Image): Void {}
+
+	public function setTextureParameters(texunit: kha.graphics4.TextureUnit, uAddressing: TextureAddressing, vAddressing: TextureAddressing,
+			minificationFilter: TextureFilter, magnificationFilter: TextureFilter, mipmapFilter: MipMapFilter): Void {
+		SystemImpl.gl.activeTexture(GL.TEXTURE0 + (cast texunit : TextureUnit).value);
+
+		switch (uAddressing) {
+			case Clamp:
+				SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+			case Repeat:
+				SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.REPEAT);
+			case Mirror:
+				SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.MIRRORED_REPEAT);
+		}
+
+		switch (vAddressing) {
+			case Clamp:
+				SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+			case Repeat:
+				SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.REPEAT);
+			case Mirror:
+				SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.MIRRORED_REPEAT);
+		}
+
+		switch (minificationFilter) {
+			case PointFilter:
+				switch (mipmapFilter) {
+					case NoMipFilter:
+						SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.NEAREST);
+					case PointMipFilter:
+						SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.NEAREST_MIPMAP_NEAREST);
+					case LinearMipFilter:
+						SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.NEAREST_MIPMAP_LINEAR);
+				}
+			case LinearFilter, AnisotropicFilter:
+				switch (mipmapFilter) {
+					case NoMipFilter:
+						SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR);
+					case PointMipFilter:
+						SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR_MIPMAP_NEAREST);
+					case LinearMipFilter:
+						SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR_MIPMAP_LINEAR);
+				}
+				if (minificationFilter == AnisotropicFilter) {
+					SystemImpl.gl.texParameteri(GL.TEXTURE_2D, SystemImpl.anisotropicFilter.TEXTURE_MAX_ANISOTROPY_EXT, 4);
+				}
+		}
+
+		switch (magnificationFilter) {
+			case PointFilter:
+				SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.NEAREST);
+			case LinearFilter, AnisotropicFilter:
+				SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.LINEAR);
+		}
+	}
+
+	public function setTexture3DParameters(texunit: kha.graphics4.TextureUnit, uAddressing: TextureAddressing, vAddressing: TextureAddressing,
+		wAddressing: TextureAddressing, minificationFilter: TextureFilter, magnificationFilter: TextureFilter, mipmapFilter: MipMapFilter): Void {}
+
+	public function setTextureCompareMode(texunit: kha.graphics4.TextureUnit, enabled: Bool) {
+		if (enabled) {
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL2.TEXTURE_COMPARE_MODE, GL2.COMPARE_REF_TO_TEXTURE);
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL2.TEXTURE_COMPARE_FUNC, GL.LEQUAL);
+		}
+		else {
+			SystemImpl.gl.texParameteri(GL.TEXTURE_2D, GL2.TEXTURE_COMPARE_MODE, GL.NONE);
+		}
+	}
+
+	public function setCubeMapCompareMode(texunit: kha.graphics4.TextureUnit, enabled: Bool) {
+		if (enabled) {
+			SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL2.TEXTURE_COMPARE_MODE, GL2.COMPARE_REF_TO_TEXTURE);
+			SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL2.TEXTURE_COMPARE_FUNC, GL.LEQUAL);
+		}
+		else {
+			SystemImpl.gl.texParameteri(GL.TEXTURE_CUBE_MAP, GL2.TEXTURE_COMPARE_MODE, GL.NONE);
+		}
+	}
+
+	public function setCubeMap(stage: kha.graphics4.TextureUnit, cubeMap: kha.graphics4.CubeMap): Void {
+		if (cubeMap == null) {
+			SystemImpl.gl.activeTexture(GL.TEXTURE0 + (cast stage : TextureUnit).value);
+			SystemImpl.gl.bindTexture(GL.TEXTURE_CUBE_MAP, null);
+		}
+		else {
+			cubeMap.set((cast stage : TextureUnit).value);
+		}
+	}
+
+	public function setCubeMapDepth(stage: kha.graphics4.TextureUnit, cubeMap: kha.graphics4.CubeMap): Void {
+		cubeMap.setDepth((cast stage : TextureUnit).value);
+	}
+
+	public function maxBoundTextures(): Int {
+		return SystemImpl.gl.getParameter(GL.MAX_TEXTURE_IMAGE_UNITS);
+	}
+
+	public function setCullMode(mode: CullMode): Void {
+		switch (mode) {
+			case None:
+				SystemImpl.gl.disable(GL.CULL_FACE);
+			case Clockwise:
+				SystemImpl.gl.enable(GL.CULL_FACE);
+				SystemImpl.gl.cullFace(GL.BACK);
+			case CounterClockwise:
+				SystemImpl.gl.enable(GL.CULL_FACE);
+				SystemImpl.gl.cullFace(GL.FRONT);
+		}
+	}
+
+	public function setPipeline(pipe: PipelineState): Void {
+		setCullMode(pipe.cullMode);
+		setDepthMode(pipe.depthWrite, pipe.depthMode);
+		if (pipe.stencilFrontMode == Always && pipe.stencilBackMode == Always && pipe.stencilFrontBothPass == Keep && pipe.stencilBackBothPass == Keep
+			&& pipe.stencilFrontDepthFail == Keep && pipe.stencilBackDepthFail == Keep && pipe.stencilFrontFail == Keep && pipe.stencilBackFail == Keep) {
+			SystemImpl.gl.disable(GL.STENCIL_TEST);
+		}
+		else {
+			SystemImpl.gl.enable(GL.STENCIL_TEST);
+			setStencilParameters(true, pipe.stencilFrontMode, pipe.stencilFrontBothPass, pipe.stencilFrontDepthFail, pipe.stencilFrontFail,
+				pipe.stencilReferenceValue, pipe.stencilReadMask, pipe.stencilWriteMask);
+			setStencilParameters(false, pipe.stencilBackMode, pipe.stencilBackBothPass, pipe.stencilBackDepthFail, pipe.stencilBackFail,
+				pipe.stencilReferenceValue, pipe.stencilReadMask, pipe.stencilWriteMask);
+		}
+		setBlendingMode(pipe.blendSource, pipe.blendDestination, pipe.blendOperation, pipe.alphaBlendSource, pipe.alphaBlendDestination,
+			pipe.alphaBlendOperation);
+		currentPipeline = pipe;
+		pipe.set();
+		colorMaskRed = pipe.colorWriteMaskRed;
+		colorMaskGreen = pipe.colorWriteMaskGreen;
+		colorMaskBlue = pipe.colorWriteMaskBlue;
+		colorMaskAlpha = pipe.colorWriteMaskAlpha;
+	}
+
+	public function setStencilReferenceValue(value: Int): Void {
+		SystemImpl.gl.stencilFuncSeparate(GL.FRONT, convertCompareMode(currentPipeline.stencilFrontMode), value, currentPipeline.stencilReadMask);
+		SystemImpl.gl.stencilFuncSeparate(GL.BACK, convertCompareMode(currentPipeline.stencilBackMode), value, currentPipeline.stencilReadMask);
+	}
+
+	public function setBool(location: kha.graphics4.ConstantLocation, value: Bool): Void {
+		SystemImpl.gl.uniform1i((cast location : ConstantLocation).value, value ? 1 : 0);
+	}
+
+	public function setInt(location: kha.graphics4.ConstantLocation, value: Int): Void {
+		SystemImpl.gl.uniform1i((cast location : ConstantLocation).value, value);
+	}
+
+	public function setInt2(location: kha.graphics4.ConstantLocation, value1: Int, value2: Int): Void {
+		SystemImpl.gl.uniform2i((cast location : ConstantLocation).value, value1, value2);
+	}
+
+	public function setInt3(location: kha.graphics4.ConstantLocation, value1: Int, value2: Int, value3: Int): Void {
+		SystemImpl.gl.uniform3i((cast location : ConstantLocation).value, value1, value2, value3);
+	}
+
+	public function setInt4(location: kha.graphics4.ConstantLocation, value1: Int, value2: Int, value3: Int, value4: Int): Void {
+		SystemImpl.gl.uniform4i((cast location : ConstantLocation).value, value1, value2, value3, value4);
+	}
+
+	public function setInts(location: kha.graphics4.ConstantLocation, values: Int32Array): Void {
+		var webglLocation = (cast location : ConstantLocation);
+		var rawValues = new js.lib.Int32Array(values.buffer, values.byteOffset, values.length);
+		switch (webglLocation.type) {
+			case GL.INT_VEC2:
+				SystemImpl.gl.uniform2iv(webglLocation.value, rawValues);
+			case GL.INT_VEC3:
+				SystemImpl.gl.uniform3iv(webglLocation.value, rawValues);
+			case GL.INT_VEC4:
+				SystemImpl.gl.uniform4iv(webglLocation.value, rawValues);
+			default:
+				SystemImpl.gl.uniform1iv(webglLocation.value, rawValues);
+		}
+	}
+
+	public function setFloat(location: kha.graphics4.ConstantLocation, value: FastFloat): Void {
+		SystemImpl.gl.uniform1f((cast location : ConstantLocation).value, value);
+	}
+
+	public function setFloat2(location: kha.graphics4.ConstantLocation, value1: FastFloat, value2: FastFloat): Void {
+		SystemImpl.gl.uniform2f((cast location : ConstantLocation).value, value1, value2);
+	}
+
+	public function setFloat3(location: kha.graphics4.ConstantLocation, value1: FastFloat, value2: FastFloat, value3: FastFloat): Void {
+		SystemImpl.gl.uniform3f((cast location : ConstantLocation).value, value1, value2, value3);
+	}
+
+	public function setFloat4(location: kha.graphics4.ConstantLocation, value1: FastFloat, value2: FastFloat, value3: FastFloat, value4: FastFloat): Void {
+		SystemImpl.gl.uniform4f((cast location : ConstantLocation).value, value1, value2, value3, value4);
+	}
+
+	public function setFloats(location: kha.graphics4.ConstantLocation, values: Float32Array): Void {
+		var webglLocation = (cast location : ConstantLocation);
+		var rawValues = new js.lib.Float32Array(values.buffer, values.byteOffset, values.length);
+		switch (webglLocation.type) {
+			case GL.FLOAT_VEC2:
+				SystemImpl.gl.uniform2fv(webglLocation.value, rawValues);
+			case GL.FLOAT_VEC3:
+				SystemImpl.gl.uniform3fv(webglLocation.value, rawValues);
+			case GL.FLOAT_VEC4:
+				SystemImpl.gl.uniform4fv(webglLocation.value, rawValues);
+			case GL.FLOAT_MAT4:
+				SystemImpl.gl.uniformMatrix4fv(webglLocation.value, false, rawValues);
+			default:
+				SystemImpl.gl.uniform1fv(webglLocation.value, rawValues);
+		}
+	}
+
+	public function setVector2(location: kha.graphics4.ConstantLocation, value: FastVector2): Void {
+		SystemImpl.gl.uniform2f((cast location : ConstantLocation).value, value.x, value.y);
+	}
+
+	public function setVector3(location: kha.graphics4.ConstantLocation, value: FastVector3): Void {
+		SystemImpl.gl.uniform3f((cast location : ConstantLocation).value, value.x, value.y, value.z);
+	}
+
+	public function setVector4(location: kha.graphics4.ConstantLocation, value: FastVector4): Void {
+		SystemImpl.gl.uniform4f((cast location : ConstantLocation).value, value.x, value.y, value.z, value.w);
+	}
+
+	static var matrixCache = new js.lib.Float32Array(16);
+	public inline function setMatrix(location: kha.graphics4.ConstantLocation, matrix: FastMatrix4): Void {
+		matrixCache[0] = matrix._00;
+		matrixCache[1] = matrix._01;
+		matrixCache[2] = matrix._02;
+		matrixCache[3] = matrix._03;
+		matrixCache[4] = matrix._10;
+		matrixCache[5] = matrix._11;
+		matrixCache[6] = matrix._12;
+		matrixCache[7] = matrix._13;
+		matrixCache[8] = matrix._20;
+		matrixCache[9] = matrix._21;
+		matrixCache[10] = matrix._22;
+		matrixCache[11] = matrix._23;
+		matrixCache[12] = matrix._30;
+		matrixCache[13] = matrix._31;
+		matrixCache[14] = matrix._32;
+		matrixCache[15] = matrix._33;
+		SystemImpl.gl.uniformMatrix4fv((cast location : ConstantLocation).value, false, matrixCache);
+	}
+
+	static var matrix3Cache = new js.lib.Float32Array(9);
+	public inline function setMatrix3(location: kha.graphics4.ConstantLocation, matrix: FastMatrix3): Void {
+		matrix3Cache[0] = matrix._00;
+		matrix3Cache[1] = matrix._01;
+		matrix3Cache[2] = matrix._02;
+		matrix3Cache[3] = matrix._10;
+		matrix3Cache[4] = matrix._11;
+		matrix3Cache[5] = matrix._12;
+		matrix3Cache[6] = matrix._20;
+		matrix3Cache[7] = matrix._21;
+		matrix3Cache[8] = matrix._22;
+		SystemImpl.gl.uniformMatrix3fv((cast location : ConstantLocation).value, false, matrix3Cache);
+	}
+
+	public function drawIndexedVertices(start: Int = 0, count: Int = -1): Void {
+		var type = SystemImpl.elementIndexUint == null ? GL.UNSIGNED_SHORT : GL.UNSIGNED_INT;
+		var size = type == GL.UNSIGNED_SHORT ? 2 : 4;
+		SystemImpl.gl.drawElements(GL.TRIANGLES, count == -1 ? indicesCount : count, type, start * size);
+	}
+
+	function convertStencilAction(action: StencilAction) {
+		switch (action) {
+			case StencilAction.Decrement:
+				return GL.DECR;
+			case StencilAction.DecrementWrap:
+				return GL.DECR_WRAP;
+			case StencilAction.Increment:
+				return GL.INCR;
+			case StencilAction.IncrementWrap:
+				return GL.INCR_WRAP;
+			case StencilAction.Invert:
+				return GL.INVERT;
+			case StencilAction.Keep:
+				return GL.KEEP;
+			case StencilAction.Replace:
+				return GL.REPLACE;
+			case StencilAction.Zero:
+				return GL.ZERO;
+		}
+	}
+
+	function convertCompareMode(compareMode: CompareMode) {
+		switch (compareMode) {
+			case Always:
+				return GL.ALWAYS;
+			case Equal:
+				return GL.EQUAL;
+			case Greater:
+				return GL.GREATER;
+			case GreaterEqual:
+				return GL.GEQUAL;
+			case Less:
+				return GL.LESS;
+			case LessEqual:
+				return GL.LEQUAL;
+			case Never:
+				return GL.NEVER;
+			case NotEqual:
+				return GL.NOTEQUAL;
+		}
+	}
+
+	public function setStencilParameters(front: Bool, compareMode: CompareMode, bothPass: StencilAction, depthFail: StencilAction, stencilFail: StencilAction,
+			referenceValue: StencilValue, readMask: Int = 0xff, writeMask: Int = 0xff): Void {
+		var stencilFunc = convertCompareMode(compareMode);
+		SystemImpl.gl.stencilMaskSeparate(front ? GL.FRONT : GL.BACK, writeMask);
+		SystemImpl.gl.stencilOpSeparate(front ? GL.FRONT : GL.BACK, convertStencilAction(stencilFail), convertStencilAction(depthFail),
+			convertStencilAction(bothPass));
+		switch (referenceValue) {
+			case Static(value):
+				SystemImpl.gl.stencilFuncSeparate(front ? GL.FRONT : GL.BACK, stencilFunc, value, readMask);
+			case Dynamic:
+				SystemImpl.gl.stencilFuncSeparate(front ? GL.FRONT : GL.BACK, stencilFunc, 0, readMask);
+		}
+	}
+
+	public function drawIndexedVerticesInstanced(instanceCount: Int, start: Int = 0, count: Int = -1) {
+		if (instancedRenderingAvailable()) {
+			var type = SystemImpl.elementIndexUint == null ? GL.UNSIGNED_SHORT : GL.UNSIGNED_INT;
+			var typeSize = SystemImpl.elementIndexUint == null ? 2 : 4;
+			if (SystemImpl.gl2) {
+				untyped SystemImpl.gl.drawElementsInstanced(GL.TRIANGLES, count == -1 ? indicesCount : count, type, start * typeSize, instanceCount);
+			}
+			else {
+				instancedExtension.drawElementsInstancedANGLE(GL.TRIANGLES, count == -1 ? indicesCount : count, type, start * typeSize, instanceCount);
+			}
+		}
+	}
+
+	public function instancedRenderingAvailable(): Bool {
+		return instancedExtension;
+	}
+}

Kha/Backends/HTML5/kha/js/graphics4/Graphics2.hx

@@ -0,0 +1,25 @@
+package kha.js.graphics4;
+
+import js.html.webgl.GL;
+import kha.Color;
+
+class Graphics2 extends kha.graphics4.Graphics2 {
+	public function new(canvas: Canvas) {
+		super(canvas);
+	}
+
+	override public function drawVideoInternal(video: kha.Video, x: Float, y: Float, width: Float, height: Float): Void {
+		var v = cast(video, Video);
+		drawScaledSubImage(v.texture, 0, 0, v.texture.width, v.texture.height, x, y, width, height);
+	}
+
+	override public function begin(clear: Bool = true, clearColor: Color = null): Void {
+		SystemImpl.gl.colorMask(true, true, true, true);
+
+		// Disable depth test so that everything is just overpainted as determined by the order of function calls2
+		SystemImpl.gl.disable(GL.DEPTH_TEST);
+		SystemImpl.gl.depthFunc(GL.ALWAYS);
+
+		super.begin(clear, clearColor);
+	}
+}

Kha/Backends/HTML5/kha/js/graphics4/TextureUnit.hx

@@ -0,0 +1,9 @@
+package kha.js.graphics4;
+
+class TextureUnit implements kha.graphics4.TextureUnit {
+	public var value: Int;
+
+	public function new(value: Int) {
+		this.value = value;
+	}
+}

Kha/Backends/HTML5/kha/js/vr/VrInterface.hx

@@ -0,0 +1,249 @@
+package kha.js.vr;
+
+import js.Syntax;
+import js.lib.Float32Array;
+import kha.vr.Pose;
+import kha.vr.PoseState;
+import kha.vr.SensorState;
+import kha.vr.TimeWarpParms;
+import kha.math.FastMatrix4;
+import kha.math.Vector3;
+import kha.math.Quaternion;
+import kha.SystemImpl;
+
+class VrInterface extends kha.vr.VrInterface {
+	var vrEnabled: Bool = false;
+
+	var vrDisplay: Dynamic;
+	var frameData: Dynamic;
+
+	var leftProjectionMatrix: FastMatrix4 = FastMatrix4.identity();
+	var rightProjectionMatrix: FastMatrix4 = FastMatrix4.identity();
+	var leftViewMatrix: FastMatrix4 = FastMatrix4.identity();
+	var rightViewMatrix: FastMatrix4 = FastMatrix4.identity();
+
+	var width: Int = 0;
+	var height: Int = 0;
+	var vrWidth: Int = 0;
+	var vrHeight: Int = 0;
+
+	public function new() {
+		super();
+		#if kha_webvr
+		var displayEnabled: Bool = Syntax.code("navigator.getVRDisplays");
+		#else
+		var displayEnabled = false;
+		#end
+		if (displayEnabled) {
+			vrEnabled = true;
+			getVRDisplays();
+			trace("Display enabled.");
+		}
+	}
+
+	function getVRDisplays() {
+		var vrDisplayInstance = Syntax.code("navigator.getVRDisplays()");
+		vrDisplayInstance.then(function(displays) {
+			if (displays.length > 0) {
+				frameData = Syntax.code("new VRFrameData()");
+				vrDisplay = Syntax.code("displays[0]");
+				vrDisplay.depthNear = 0.1;
+				vrDisplay.depthFar = 1024.0;
+
+				var leftEye = vrDisplay.getEyeParameters("left");
+				var rightEye = vrDisplay.getEyeParameters("right");
+				width = SystemImpl.khanvas.width;
+				height = SystemImpl.khanvas.height;
+				vrWidth = Std.int(Math.max(leftEye.renderWidth, rightEye.renderWidth) * 2);
+				vrHeight = Std.int(Math.max(leftEye.renderHeight, rightEye.renderHeight));
+			}
+			else {
+				trace("There are no VR displays connected.");
+			}
+		});
+	}
+
+	public override function onVRRequestPresent() {
+		try {
+			vrDisplay.requestPresent([{source: SystemImpl.khanvas}]).then(function() {
+				onResize();
+				vrDisplay.requestAnimationFrame(onAnimationFrame);
+			});
+		}
+		catch (err:Dynamic) {
+			trace("Failed to requestPresent.");
+			trace(err);
+		}
+	}
+
+	public override function onVRExitPresent() {
+		try {
+			vrDisplay.exitPresent([{source: SystemImpl.khanvas}]).then(function() {
+				onResize();
+			});
+		}
+		catch (err:Dynamic) {
+			trace("Failed to exitPresent.");
+			trace(err);
+		}
+	}
+
+	public override function onResetPose() {
+		try {
+			vrDisplay.resetPose();
+		}
+		catch (err:Dynamic) {
+			trace("Failed to resetPose");
+			trace(err);
+		}
+	}
+
+	function onAnimationFrame(timestamp: Float): Void {
+		if (vrDisplay != null && vrDisplay.isPresenting) {
+			vrDisplay.requestAnimationFrame(onAnimationFrame);
+
+			vrDisplay.getFrameData(frameData);
+
+			leftProjectionMatrix = createMatrixFromArray(untyped frameData.leftProjectionMatrix);
+			leftViewMatrix = createMatrixFromArray(untyped frameData.leftViewMatrix);
+
+			rightProjectionMatrix = createMatrixFromArray(untyped frameData.rightProjectionMatrix);
+			rightViewMatrix = createMatrixFromArray(untyped frameData.rightViewMatrix);
+
+			// Submit the newly rendered layer to be presented by the VRDisplay
+			vrDisplay.submitFrame();
+		}
+	}
+
+	function onResize() {
+		if (vrDisplay != null && vrDisplay.isPresenting) {
+			SystemImpl.khanvas.width = vrWidth;
+			SystemImpl.khanvas.height = vrHeight;
+		}
+		else {
+			SystemImpl.khanvas.width = width;
+			SystemImpl.khanvas.height = height;
+		}
+	}
+
+	public override function GetSensorState(): SensorState {
+		return GetPredictedSensorState(0.0);
+	}
+
+	public override function GetPredictedSensorState(time: Float): SensorState {
+		var result: SensorState = new SensorState();
+
+		result.Predicted = new PoseState();
+		result.Recorded = result.Predicted;
+
+		result.Predicted.AngularAcceleration = new Vector3();
+		result.Predicted.AngularVelocity = new Vector3();
+		result.Predicted.LinearAcceleration = new Vector3();
+		result.Predicted.LinearVelocity = new Vector3();
+		result.Predicted.TimeInSeconds = time;
+		result.Predicted.Pose = new Pose();
+		result.Predicted.Pose.Orientation = new Quaternion();
+		result.Predicted.Pose.Position = new Vector3();
+
+		var mPose = frameData.pose; // predicted pose of the vrDisplay
+		if (mPose != null) {
+			result.Predicted.AngularVelocity = createVectorFromArray(untyped mPose.angularVelocity);
+			result.Predicted.AngularAcceleration = createVectorFromArray(untyped mPose.angularAcceleration);
+			result.Predicted.LinearVelocity = createVectorFromArray(untyped mPose.linearVelocity);
+			result.Predicted.LinearAcceleration = createVectorFromArray(untyped mPose.linearAcceleration);
+			result.Predicted.Pose.Orientation = createQuaternion(untyped mPose.orientation);
+			result.Predicted.Pose.Position = createVectorFromArray(untyped mPose.position);
+		}
+
+		return result;
+	}
+
+	// Sends a black image to the warp swap thread
+	public override function WarpSwapBlack(): Void {
+		// TODO: Implement
+	}
+
+	// Sends the Oculus loading symbol to the warp swap thread
+	public override function WarpSwapLoadingIcon(): Void {
+		// TODO: Implement
+	}
+
+	// Sends the set of images to the warp swap thread
+	public override function WarpSwap(parms: TimeWarpParms): Void {
+		// TODO: Implement
+	}
+
+	public override function IsPresenting(): Bool {
+		if (vrDisplay != null)
+			return vrDisplay.isPresenting;
+		return false;
+	}
+
+	public override function IsVrEnabled(): Bool {
+		return vrEnabled;
+	}
+
+	public override function GetTimeInSeconds(): Float {
+		return Scheduler.time();
+	}
+
+	public override function GetProjectionMatrix(eye: Int): FastMatrix4 {
+		if (eye == 0) {
+			return leftProjectionMatrix;
+		}
+		else {
+			return rightProjectionMatrix;
+		}
+	}
+
+	public override function GetViewMatrix(eye: Int): FastMatrix4 {
+		if (eye == 0) {
+			return leftViewMatrix;
+		}
+		else {
+			return rightViewMatrix;
+		}
+	}
+
+	function createMatrixFromArray(array: Float32Array): FastMatrix4 {
+		var matrix: FastMatrix4 = FastMatrix4.identity();
+		matrix._00 = array[0];
+		matrix._01 = array[1];
+		matrix._02 = array[2];
+		matrix._03 = array[3];
+		matrix._10 = array[4];
+		matrix._11 = array[5];
+		matrix._12 = array[6];
+		matrix._13 = array[7];
+		matrix._20 = array[8];
+		matrix._21 = array[9];
+		matrix._22 = array[10];
+		matrix._23 = array[11];
+		matrix._30 = array[12];
+		matrix._31 = array[13];
+		matrix._32 = array[14];
+		matrix._33 = array[15];
+		return matrix;
+	}
+
+	function createVectorFromArray(array: Float32Array): Vector3 {
+		var vector: Vector3 = new Vector3(0, 0, 0);
+		if (array != null) {
+			vector.x = array[0];
+			vector.y = array[1];
+			vector.z = array[2];
+		}
+		return vector;
+	}
+
+	function createQuaternion(array: Float32Array): Quaternion {
+		var quaternion: Quaternion = new Quaternion(0, 0, 0, 0);
+		if (array != null) {
+			quaternion.x = array[0];
+			quaternion.y = array[1];
+			quaternion.z = array[2];
+			quaternion.w = array[3];
+		}
+		return quaternion;
+	}
+}

Kha/Backends/HTML5/kha/netsync/Network.hx

@@ -0,0 +1,68 @@
+package kha.netsync;
+
+import haxe.io.Bytes;
+import js.html.BinaryType;
+import js.html.WebSocket;
+
+class Network {
+	var socket: WebSocket;
+	var open: Bool = false;
+
+	public function new(url: String, port: Int, errorCallback: Void->Void, closeCallback: Void->Void) {
+		socket = new WebSocket("ws://" + url + ":" + port);
+		socket.onerror = function(error) {
+			trace("Network error.");
+			errorCallback();
+		}
+		socket.binaryType = BinaryType.ARRAYBUFFER;
+		socket.onopen = function() {
+			open = true;
+		};
+		socket.onclose = function(event) {
+			trace("Network connection closed. " + webSocketCloseReason(event.code) + " (" + event.reason + ").");
+			closeCallback();
+		}
+	}
+
+	static function webSocketCloseReason(code: Int): String {
+		switch (code) {
+			case 1000:
+				return "Normal Closure";
+			case 1001:
+				return "Going Away";
+			case 1002:
+				return "Protocol error";
+			case 1003:
+				return "Unsupported Data";
+			case 1005:
+				return "No Status Rcvd";
+			case 1006:
+				return "Abnormal Closure";
+			case 1007:
+				return "Invalid frame";
+			case 1008:
+				return "Policy Violation";
+			case 1009:
+				return "Message Too Big";
+			case 1010:
+				return "Mandatory Ext.";
+			case 1011:
+				return "Internal Server Error";
+			case 1015:
+				return "TLS handshake";
+			default:
+				return "";
+		}
+	}
+
+	public function send(bytes: Bytes, mandatory: Bool): Void {
+		if (open)
+			socket.send(bytes.getData());
+	}
+
+	public function listen(listener: Bytes->Void): Void {
+		socket.onmessage = function(message) {
+			listener(Bytes.ofData(message.data));
+		};
+	}
+}

Kha/Backends/HTML5/kha/network/Http.hx

@@ -0,0 +1,40 @@
+package kha.network;
+
+import js.html.XMLHttpRequest;
+
+class Http {
+	static function methodToString(method: HttpMethod): String {
+		switch (method) {
+			case Get:
+				return "GET";
+			case Post:
+				return "POST";
+			case Put:
+				return "PUT";
+			case Delete:
+				return "DELETE";
+		}
+	}
+
+	public static function request(url: String, path: String, data: String, port: Int, secure: Bool, method: HttpMethod, headers: Map<String, String>,
+			callback: Int->Int->String->Void /*error, response, body*/): Void {
+		var req = new XMLHttpRequest("");
+		var completeUrl = (secure ? "https://" : "http://") + url + ":" + port + "/" + path;
+		req.open(methodToString(method), completeUrl, true);
+		if (headers != null) {
+			for (key in headers.keys()) {
+				req.setRequestHeader(key, headers[key]);
+			}
+		}
+		req.onreadystatechange = function() {
+			if (req.readyState != 4)
+				return;
+			if (req.status != 200) {
+				callback(1, req.status, null);
+				return;
+			}
+			callback(0, req.status, req.responseText);
+		}
+		req.send(data);
+	}
+}

Kha/Backends/Java/java/lang/Runnable.hx

@@ -0,0 +1,5 @@
+package java.lang;
+
+extern interface Runnable {
+	function run(): Void;
+}

Kha/Backends/Java/kha/Blob.hx

@@ -0,0 +1,3 @@
+package kha;
+
+typedef Blob = kha.internal.BytesBlob;

Kha/Backends/Java/kha/Display.hx

@@ -0,0 +1,75 @@
+package kha;
+
+class Display {
+	static var instance: Display = new Display();
+
+	function new() {}
+
+	public static function init(): Void {}
+
+	public static var primary(get, never): Display;
+
+	static function get_primary(): Display {
+		return instance;
+	}
+
+	public static var all(get, never): Array<Display>;
+
+	static function get_all(): Array<Display> {
+		return [primary];
+	}
+
+	public var available(get, never): Bool;
+
+	function get_available(): Bool {
+		return true;
+	}
+
+	public var name(get, never): String;
+
+	function get_name(): String {
+		return "Display";
+	}
+
+	public var x(get, never): Int;
+
+	function get_x(): Int {
+		return 0;
+	}
+
+	public var y(get, never): Int;
+
+	function get_y(): Int {
+		return 0;
+	}
+
+	public var width(get, never): Int;
+
+	function get_width(): Int {
+		return 1920;
+	}
+
+	public var height(get, never): Int;
+
+	function get_height(): Int {
+		return 1080;
+	}
+
+	public var frequency(get, never): Int;
+
+	function get_frequency(): Int {
+		return 60;
+	}
+
+	public var pixelsPerInch(get, never): Int;
+
+	function get_pixelsPerInch(): Int {
+		return 96;
+	}
+
+	public var modes(get, never): Array<DisplayMode>;
+
+	function get_modes(): Array<DisplayMode> {
+		return [];
+	}
+}

Kha/Backends/Java/kha/Font.hx

@@ -0,0 +1,3 @@
+package kha;
+
+typedef Font = kha.java.Font;

Kha/Backends/Java/kha/Image.hx

@@ -0,0 +1,162 @@
+package kha;
+
+import haxe.io.Bytes;
+import kha.graphics4.TextureFormat;
+import kha.graphics4.Usage;
+import kha.java.Painter;
+
+@:classCode('
+	public java.awt.image.BufferedImage image;
+')
+class Image implements Canvas implements Resource {
+	var painter: Painter;
+	var graphics1: kha.graphics1.Graphics;
+
+	public function new(filename: String) {}
+
+	@:functionCode('
+		image.image = new java.awt.image.BufferedImage(width, height, format == 0 ? 10 : 6);
+	')
+	static function create2(image: Image, width: Int, height: Int, format: Int): Void {}
+
+	public static function create(width: Int, height: Int, format: TextureFormat = null, usage: Usage = null): Image {
+		var img = new Image(null);
+		create2(img, width, height, format == TextureFormat.L8 ? 0 : 1);
+		return img;
+	}
+
+	public static function create3D(width: Int, height: Int, depth: Int, format: TextureFormat = null, usage: Usage = null): Image {
+		return null;
+	}
+
+	public static function createRenderTarget(width: Int, height: Int, format: TextureFormat = null, depthStencil: Bool = false,
+			antiAliasingSamples: Int = 1): Image {
+		var img = new Image(null);
+		create2(img, width, height, format == TextureFormat.L8 ? 0 : 1);
+		return img;
+	}
+
+	public static function fromBytes(bytes: Bytes, width: Int, height: Int, format: TextureFormat = null, usage: Usage = null): Image {
+		return null;
+	}
+
+	public static function fromBytes3D(bytes: Bytes, width: Int, height: Int, depth: Int, format: TextureFormat = null, usage: Usage = null): Image {
+		return null;
+	}
+
+	public var g1(get, never): kha.graphics1.Graphics;
+
+	function get_g1(): kha.graphics1.Graphics {
+		if (graphics1 == null) {
+			graphics1 = new kha.graphics2.Graphics1(this);
+		}
+		return graphics1;
+	}
+
+	public var g2(get, never): kha.graphics2.Graphics;
+
+	@:functionCode('
+		painter.graphics = image.createGraphics();
+	')
+	function initPainter(painter: Painter): Void {}
+
+	function get_g2(): kha.graphics2.Graphics {
+		if (painter == null) {
+			painter = new Painter();
+			initPainter(painter);
+		}
+		return painter;
+	}
+
+	public var g4(get, never): kha.graphics4.Graphics;
+
+	function get_g4(): kha.graphics4.Graphics {
+		return null;
+	}
+
+	public var width(get, never): Int;
+
+	@:functionCode('
+		return image.getWidth(null);
+	')
+	function get_width(): Int {
+		return 0;
+	}
+
+	public var height(get, never): Int;
+
+	@:functionCode('
+		return image.getHeight(null);
+	')
+	function get_height(): Int {
+		return 0;
+	}
+
+	public var depth(get, never): Int;
+
+	function get_depth(): Int {
+		return 1;
+	}
+
+	public var format(get, never): TextureFormat;
+
+	@:functionCode('
+		return image.getType();
+	')
+	function get_format(): TextureFormat {
+		return TextureFormat.RGBA32;
+	}
+
+	public var realWidth(get, never): Int;
+
+	function get_realWidth(): Int {
+		return width;
+	}
+
+	public var realHeight(get, never): Int;
+
+	function get_realHeight(): Int {
+		return height;
+	}
+
+	public var stride(get, never): Int;
+
+	function get_stride(): Int {
+		return realWidth * 4;
+	}
+
+	@:functionCode('
+		if (x >= 0 && x < get_width() && y >= 0 && y < get_height()) {
+			int argb = image.getRGB(x, y);
+			return argb >> 24 != 0;
+		}
+		else return false;
+	')
+	public function isOpaque(x: Int, y: Int): Bool {
+		return true;
+	}
+
+	public function at(x: Int, y: Int): Int {
+		return 0;
+	}
+
+	public function unload(): Void {}
+
+	public function lock(level: Int = 0): Bytes {
+		return null;
+	}
+
+	public function unlock(): Void {}
+
+	public function getPixels(): Bytes {
+		return null;
+	}
+
+	public function generateMipmaps(levels: Int): Void {}
+
+	public function setMipmaps(mipmaps: Array<Image>): Void {}
+
+	public function setDepthStencilFrom(image: Image): Void {}
+
+	public function clear(x: Int, y: Int, z: Int, width: Int, height: Int, depth: Int, color: Color): Void {}
+}