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Kinc/Backends/Graphics5/Direct3D12/Sources/kinc/backend/graphics5/vertexbuffer.c.h

@@ -0,0 +1,123 @@
+#include "vertexbuffer.h"
+
+#include <kinc/graphics5/vertexbuffer.h>
+
+#include <kinc/backend/SystemMicrosoft.h>
+#include <kinc/graphics4/graphics.h>
+
+kinc_g5_vertex_buffer_t *_current_vertex_buffer = NULL;
+
+void kinc_g5_vertex_buffer_init(kinc_g5_vertex_buffer_t *buffer, int count, kinc_g5_vertex_structure_t *structure, bool gpuMemory, int instanceDataStepRate) {
+	buffer->impl.myCount = count;
+
+	// static_assert(sizeof(D3D12VertexBufferView) == sizeof(D3D12_VERTEX_BUFFER_VIEW), "Something is wrong with D3D12IVertexBufferView");
+
+	buffer->impl.myStride = 0;
+	for (int i = 0; i < structure->size; ++i) {
+		buffer->impl.myStride += kinc_g4_vertex_data_size(structure->elements[i].data);
+	}
+
+	int uploadBufferSize = buffer->impl.myStride * buffer->impl.myCount;
+
+	D3D12_HEAP_PROPERTIES heapProperties;
+	heapProperties.Type = D3D12_HEAP_TYPE_UPLOAD;
+	heapProperties.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
+	heapProperties.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
+	heapProperties.CreationNodeMask = 1;
+	heapProperties.VisibleNodeMask = 1;
+
+	D3D12_RESOURCE_DESC resourceDesc;
+	resourceDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+	resourceDesc.Alignment = 0;
+	resourceDesc.Width = uploadBufferSize;
+	resourceDesc.Height = 1;
+	resourceDesc.DepthOrArraySize = 1;
+	resourceDesc.MipLevels = 1;
+	resourceDesc.Format = DXGI_FORMAT_UNKNOWN;
+	resourceDesc.SampleDesc.Count = 1;
+	resourceDesc.SampleDesc.Quality = 0;
+	resourceDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+	resourceDesc.Flags = D3D12_RESOURCE_FLAG_NONE;
+
+	device->CreateCommittedResource(&heapProperties, D3D12_HEAP_FLAG_NONE, &resourceDesc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL,
+	                                IID_GRAPHICS_PPV_ARGS(&buffer->impl.uploadBuffer));
+
+	// device_->CreateCommittedResource(&CD3DX12_HEAP_PROPERTIES (D3D12_HEAP_TYPE_DEFAULT), D3D12_HEAP_FLAG_NONE,
+	// &CD3DX12_RESOURCE_DESC::Buffer(uploadBufferSize),
+	//	D3D12_RESOURCE_STATE_COPY_DEST, nullptr, IID_PPV_ARGS(&vertexBuffer));
+
+	buffer->impl.view.BufferLocation = buffer->impl.uploadBuffer->GetGPUVirtualAddress();
+	buffer->impl.view.SizeInBytes = uploadBufferSize;
+	buffer->impl.view.StrideInBytes = buffer->impl.myStride;
+
+	buffer->impl.lastStart = 0;
+	buffer->impl.lastCount = kinc_g5_vertex_buffer_count(buffer);
+}
+
+void kinc_g5_vertex_buffer_destroy(kinc_g5_vertex_buffer_t *buffer) {
+	// buffer->impl.vertexBuffer->Release();
+	buffer->impl.uploadBuffer->Release();
+}
+
+float *kinc_g5_vertex_buffer_lock_all(kinc_g5_vertex_buffer_t *buffer) {
+	return kinc_g5_vertex_buffer_lock(buffer, 0, kinc_g5_vertex_buffer_count(buffer));
+}
+
+float *kinc_g5_vertex_buffer_lock(kinc_g5_vertex_buffer_t *buffer, int start, int count) {
+	buffer->impl.lastStart = start;
+	buffer->impl.lastCount = count;
+
+	D3D12_RANGE range;
+	range.Begin = start * buffer->impl.myStride;
+	range.End = (start + count) * buffer->impl.myStride;
+
+	void *p;
+	buffer->impl.uploadBuffer->Map(0, &range, &p);
+	byte *bytes = (byte *)p;
+	bytes += start * buffer->impl.myStride;
+	return (float *)bytes;
+}
+
+void kinc_g5_vertex_buffer_unlock_all(kinc_g5_vertex_buffer_t *buffer) {
+	D3D12_RANGE range;
+	range.Begin = buffer->impl.lastStart * buffer->impl.myStride;
+	range.End = (buffer->impl.lastStart + buffer->impl.lastCount) * buffer->impl.myStride;
+	buffer->impl.uploadBuffer->Unmap(0, &range);
+
+	// view.BufferLocation = uploadBuffer->GetGPUVirtualAddress() + myStart * myStride;
+
+	// commandList->CopyBufferRegion(vertexBuffer, 0, uploadBuffer, 0, count() * stride());
+	// CD3DX12_RESOURCE_BARRIER barriers[1] = { CD3DX12_RESOURCE_BARRIER::Transition(vertexBuffer, D3D12_RESOURCE_STATE_COPY_DEST,
+	// D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER) };
+	// commandList->ResourceBarrier(1, barriers);
+}
+
+void kinc_g5_vertex_buffer_unlock(kinc_g5_vertex_buffer_t *buffer, int count) {
+	D3D12_RANGE range;
+	range.Begin = buffer->impl.lastStart * buffer->impl.myStride;
+	range.End = (buffer->impl.lastStart + count) * buffer->impl.myStride;
+	buffer->impl.uploadBuffer->Unmap(0, &range);
+
+	// view.BufferLocation = uploadBuffer->GetGPUVirtualAddress() + myStart * myStride;
+
+	// commandList->CopyBufferRegion(vertexBuffer, 0, uploadBuffer, 0, count() * stride());
+	// CD3DX12_RESOURCE_BARRIER barriers[1] = { CD3DX12_RESOURCE_BARRIER::Transition(vertexBuffer, D3D12_RESOURCE_STATE_COPY_DEST,
+	// D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER) };
+	// commandList->ResourceBarrier(1, barriers);
+}
+
+int kinc_g5_internal_vertex_buffer_set(kinc_g5_vertex_buffer_t *buffer, int offset) {
+	// UINT stride = myStride;
+	// UINT offset = 0;
+	// context->IASetVertexBuffers(0, 1, &vb, &stride, &offset);
+	_current_vertex_buffer = buffer;
+	return 0;
+}
+
+int kinc_g5_vertex_buffer_count(kinc_g5_vertex_buffer_t *buffer) {
+	return buffer->impl.myCount;
+}
+
+int kinc_g5_vertex_buffer_stride(kinc_g5_vertex_buffer_t *buffer) {
+	return buffer->impl.myStride;
+}