52 lines
1.3 KiB
HLSL
52 lines
1.3 KiB
HLSL
#include "ShaderConstants.fxh"
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#include "Util.fxh"
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#ifndef BLUR_RADIUS
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#define BLUR_RADIUS 1 //base size
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#endif
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//HACK do not build higher res versions on DX9
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#if VERSION < 0xa000 && BLUR_RADIUS > 2
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#undef BLUR_RADIUS
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#define BLUR_RADIUS 2
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#endif
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struct PS_Input
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{
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float4 position : SV_Position;
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float2 uv : TEXCOORD_0;
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};
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struct PS_Output
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{
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float4 color : SV_Target;
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};
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void main( in PS_Input PSInput, out PS_Output PSOutput )
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{
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float2 pixelSide = float2(1.0 / TEXTURE_DIMENSIONS.xy);
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#if BLUR_RADIUS == 1
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float4 color = TEXTURE_0.Sample(TextureSampler0, PSInput.uv);
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#else
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float4 color = float4(0, 0, 0, 0);
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for(int i = -BLUR_RADIUS / 2; i < BLUR_RADIUS / 2; ++i) {
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for(int j = -BLUR_RADIUS / 2; j < BLUR_RADIUS / 2; ++j) {
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float2 uv = PSInput.uv + pixelSide * float2(j, i);
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uv = fmod(uv, float2(1,1));
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color += TEXTURE_0.Sample(TextureSampler0, uv);
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}
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}
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color /= BLUR_RADIUS * BLUR_RADIUS;
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#endif
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color.rgb = lerp(color.rgb, CURRENT_COLOR.rgb * color.rgb, color.a * CURRENT_COLOR.a);
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if(CURRENT_COLOR.a > 0) {
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//the alpha in diffuse is a mask
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color.a = 1;
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}
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PSOutput.color = color;
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} |