struct PixelInput
{
    float4 position : SV_POSITION;
    float4 color : COLOR;
};

float4 main(PixelInput INPUT) : SV_TARGET
{
	//return float4(1.0f, 1.0f, 1.0f, 1.0f); // solid color
    return INPUT.color; // vertex color
    //return INPUT.color * 0.5f; // darker vertex color
    //return INPUT.color * 2.0f; // lighter vertex color
    
    //float4 color = INPUT.color;
    //color.r = 0.0f; // no red channel
    //color = 1 - color;
    
    //return color;
}