public void DrawIndexed(int indexCount, int instanceCount, int firstIndex, int vertexOffset, int firstInstance)
{
m_CompiledPipelineProgram.InitializePipeline();
this.gl_InstanceIndex = firstInstance;
this.CurrentStage = StageType.InputAssembler;
int indiceIndex = firstIndex;
int[] vertexIndex32 = new int[1];
UInt16[] vertexIndex16 = new ushort[1];
SoftwareDeviceMemory sdmIndex = (SoftwareDeviceMemory)m_context.m_CommandBuffer.m_context.m_IndexBuffer.m_deviceMemory;
int indexMemOffset = m_context.m_CommandBuffer.m_context.m_IndexBuffer.m_memoryOffset;
Func <int> getIndiceFunc;
switch (m_context.m_CommandBuffer.m_context.m_IndexBufferType)
{
case VkIndexType.VK_INDEX_TYPE_UINT16:
getIndiceFunc = () =>
{
int srcOffset = indexMemOffset + (indiceIndex * 2);
Buffer.BlockCopy(sdmIndex.m_bytes, srcOffset, vertexIndex16, 0, 2);
return(vertexIndex16[0]);
};
break;
case VkIndexType.VK_INDEX_TYPE_UINT32:
getIndiceFunc = () =>
{
int srcOffset = indexMemOffset + (indiceIndex * 4);
Buffer.BlockCopy(sdmIndex.m_bytes, srcOffset, vertexIndex32, 0, 4);
return(vertexIndex32[0]);
};
break;
default:
return;
}
for (int instanceNum = 0; instanceNum < instanceCount; instanceNum++)
{
indiceIndex = firstIndex;
while (indexCount >= PrimitiveLength)
{
for (int i = 0; i < PrimitiveLength; i++)
{
this.PrimitiveVertexIndex = i;
this.gl_VertexIndex = getIndiceFunc();
m_CompiledPipelineProgram.VertexShader();
indiceIndex++;
}
RasterizeTriangle();
indexCount -= this.PrimitiveLength;
}
this.gl_InstanceIndex++;
}
}
