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float4 color1, color2, color3, color4;
sampler textureSampler;
float4 MainPS(float4 pos : SV_POSITION, float4 color1 : COLOR0, float2 coords: TEXCOORD0) : COLOR
float4 spriteColor = tex2D(textureSampler,coords);
if(spriteColor.r < 0.1)
return color1;
if(spriteColor.r < 0.3)
return color2;
if(spriteColor.r < 0.5)
return color3;
return color4;
technique SpriteDrawing
pass P0
PixelShader = compile ps_4_0_level_9_1 MainPS();
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