void main(
	float3 in_position, 
	float4 in_color,
	uniform float4x4 mvp_matrix,
	out float4 out_position: POSITION, 
	out float4 out_color: COLOR)
{
	out_position = mul(mvp_matrix, float4(in_position, 1.0f));
	out_color    = in_color;
}