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Kinc/Backends/Graphics4/Direct3D9/Sources/kinc/backend/graphics4/indexbuffer.cpp

@@ -0,0 +1,56 @@
+#include <kinc/graphics4/graphics.h>
+#include <kinc/graphics4/indexbuffer.h>
+
+#include <kinc/backend/SystemMicrosoft.h>
+
+#include "Direct3D9.h"
+
+struct kinc_g4_index_buffer *kinc_internal_current_index_buffer = NULL;
+
+void kinc_g4_index_buffer_init(kinc_g4_index_buffer_t *buffer, int count, kinc_g4_index_buffer_format_t format, kinc_g4_usage_t usage) {
+	buffer->impl.count = count;
+	buffer->impl.format = format;
+
+	DWORD usageFlags = D3DUSAGE_WRITEONLY;
+	if (usage == KINC_G4_USAGE_DYNAMIC) {
+		usageFlags = D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY;
+	}
+
+	kinc_microsoft_affirm(device->CreateIndexBuffer(
+	    sizeof(int) * count, usageFlags, format == KINC_G4_INDEX_BUFFER_FORMAT_32BIT ? D3DFMT_INDEX32 : D3DFMT_INDEX16, D3DPOOL_DEFAULT, &buffer->impl.ib, 0));
+}
+
+void kinc_g4_index_buffer_destroy(kinc_g4_index_buffer_t *buffer) {
+	buffer->impl.ib->Release();
+}
+
+static int kinc_g4_internal_index_buffer_stride(kinc_g4_index_buffer_t *buffer) {
+	return buffer->impl.format == KINC_G4_INDEX_BUFFER_FORMAT_32BIT ? 4 : 2;
+}
+
+void *kinc_g4_index_buffer_lock_all(kinc_g4_index_buffer_t *buffer) {
+	return kinc_g4_index_buffer_lock(buffer, 0, kinc_g4_index_buffer_count(buffer));
+}
+
+void *kinc_g4_index_buffer_lock(kinc_g4_index_buffer_t *buffer, int start, int count) {
+	uint8_t *data;
+	kinc_microsoft_affirm(buffer->impl.ib->Lock(0, sizeof(int) * kinc_g4_index_buffer_count(buffer), (void **)&data, D3DLOCK_DISCARD));
+	return &data[start * kinc_g4_internal_index_buffer_stride(buffer)];
+}
+
+void kinc_g4_index_buffer_unlock_all(kinc_g4_index_buffer_t *buffer) {
+	kinc_microsoft_affirm(buffer->impl.ib->Unlock());
+}
+
+void kinc_g4_index_buffer_unlock(kinc_g4_index_buffer_t *buffer, int count) {
+	kinc_g4_index_buffer_unlock_all(buffer);
+}
+
+void kinc_internal_g4_index_buffer_set(kinc_g4_index_buffer_t *buffer) {
+	kinc_internal_current_index_buffer = buffer;
+	kinc_microsoft_affirm(device->SetIndices(buffer->impl.ib));
+}
+
+int kinc_g4_index_buffer_count(kinc_g4_index_buffer_t *buffer) {
+	return buffer->impl.count;
+}