public void DrawGeometry(GraphicsDevice graphicsDevice)
{
graphicsDevice.SetVertexBuffer(0, patchVertexBuffer, 4, 0);
graphicsDevice.SetVertexInputLayout(vertexInputLayout);
for(int i = 0; i < patchInstanceBuffer.Length; ++i)
{
if (currentInstanceData[i].Count == 0)
continue;
graphicsDevice.SetIndexBuffer(patchIndexBuffer[i], false, 0);
graphicsDevice.SetVertexBuffer(1, patchInstanceBuffer[i], sizeof(float) * 4, 0);
graphicsDevice.DrawIndexedInstanced(PrimitiveType.PatchList(3), patchIndexBuffer[i].ElementCount, currentInstanceData[i].Count, 0, 0, 0);
}
}
