wehub-resource-sync
70 lines
1.8 KiB
HLSL
70 lines
1.8 KiB
HLSL
cbuffer ParamConstants : register(b0)
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{
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float2 Direction;
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float Size;
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float NumberOfSamples;
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float4 Color;
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float Offset;
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float AddOriginal;
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float ApplyMaskToAlpha;
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float MaskContrast;
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float MaskOffset;
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}
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cbuffer TimeConstants : register(b1)
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{
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float globalTime;
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float time;
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float runTime;
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float beatTime;
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}
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struct vsOutput
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{
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float4 position : SV_POSITION;
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float2 texCoord : TEXCOORD;
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};
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Texture2D<float4> InputTexture : register(t0);
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Texture2D<float4> MaskTexture : register(t1);
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sampler samLinear : register(s0);
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static const int WEIGHT_COUNT = 10;
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static const float Gauss[WEIGHT_COUNT] = { 0.93, 0.86, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1 };
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static const float widthToHeight = 1; // Aspect?
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float4 psMain(vsOutput input) : SV_TARGET
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{
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float4 mask = MaskTexture.Sample(samLinear, input.texCoord);
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float maskValue = saturate( ((mask.r+mask.g+mask.b)/3 -0.5) * MaskContrast + 0.5 + MaskOffset);
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float2 dir = Direction;
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dir *= 0.01*Size/NumberOfSamples * maskValue;
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dir.y *= widthToHeight;
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float2 pos = dir;
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float4 orgColor = InputTexture.Sample(samLinear, input.texCoord);
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float4 c = orgColor;
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float totalWeight = 1;
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for (int i = 0; i < NumberOfSamples; ++i)
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{
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float index = (float)i*(WEIGHT_COUNT - 1)/NumberOfSamples;
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float weight = lerp(Gauss[(int)index], Gauss[(int)index + 1], frac(index));
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c += InputTexture.Sample(samLinear, input.texCoord + pos)*weight;
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c += InputTexture.Sample(samLinear, input.texCoord - pos)*weight;
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pos += dir;
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totalWeight += 2*weight;
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}
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//float4 factor = float4(Glow.xxx, 1) * Color;
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c = Color * c / totalWeight + float4(Offset.xxx,0) + orgColor* AddOriginal * maskValue;
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c.a = clamp(c.a, 0,1) * lerp(1, (1-maskValue), ApplyMaskToAlpha);
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return clamp(c,0,1000);
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}
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