wehub-resource-sync
51 lines
1.4 KiB
HLSL
51 lines
1.4 KiB
HLSL
cbuffer ParamConstants : register(b0)
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{
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float Height;
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float Opacity;
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float ClearBackground;
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float Intensity;
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}
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sampler texSampler : register(s0);
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Texture2D<float4> InputTexture : register(t0);
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RWTexture2D<float4> WriteOutput : register(u0);
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groupshared float4 SharedColors[512];
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static const float ToRad = 3.141592/180;
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[numthreads(1,512,1)]
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void main(uint3 i : SV_DispatchThreadID)
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{
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int texWidth;
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int texHeight;
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WriteOutput.GetDimensions(texWidth, texHeight);
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SharedColors[i.y] = i.y > 256 ? float4(0,0,0, ClearBackground) : 0;
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GroupMemoryBarrierWithGroupSync();
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const int steps = 256;
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if(i.y == 0)
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{
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float dashColor = i.x % 8 < 4 ? 1 : 0;
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SharedColors[511] = float4(dashColor.xxx, 1);
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SharedColors[256] = float4(dashColor.xxx, 1);
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[fastopt]
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for(int rowIndex= 0; rowIndex < 256; rowIndex++)
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{
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float2 uv = float2(float2( i.x / (float)texWidth, (float) rowIndex / 256.0 ));
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float4 col = InputTexture.SampleLevel(texSampler, uv,0);
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int3 level = 512 - clamp( col.rgb * 256, 0, 511);
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SharedColors[level.r] += float4(Intensity,0,0,Opacity) * col.a;
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SharedColors[level.g] += float4(0,Intensity,0,Opacity) * col.a;
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SharedColors[level.b] += float4(0,0,Intensity,Opacity) * col.a;
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}
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}
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GroupMemoryBarrierWithGroupSync();
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WriteOutput[i.xy] = clamp(SharedColors[i.y], 0, 1);
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} |