wehub-resource-sync
64 lines
2.0 KiB
HLSL
64 lines
2.0 KiB
HLSL
RWTexture2D<float4> outputTexture : register(u0);
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Texture2D<float4> Image : register(t0);
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Texture2D<float4> DisplacementMap : register(t1);
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sampler texSampler : register(s0);
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cbuffer ParamConstants : register(b0)
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{
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float SampleRadius;
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float Displacement;
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float DisplaceOffset;
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float SampleCount;
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float ShiftX;
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float ShiftY;
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float Angle;
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}
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[numthreads(16,16,1)]
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void main(uint3 input : SV_DispatchThreadID)
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{
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uint width, height;
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outputTexture.GetDimensions(width, height);
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float2 uv = (float2)input.xy/ float2(width - 1, height - 1);
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float2 uv2= uv+ float2(ShiftX, ShiftY);
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float4 ccc = Image.SampleLevel(texSampler, uv, 0.0);
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float sx = SampleRadius / width;
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float sy = SampleRadius / height;
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float4 cy1= DisplacementMap.SampleLevel(texSampler, float2(uv2.x, uv2.y + sy), 0.0);
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float4 cy2= DisplacementMap.SampleLevel(texSampler, float2(uv2.x, uv2.y - sy),0.0);
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float4 cx1= DisplacementMap.SampleLevel(texSampler, float2(uv2.x + sx, uv2.y),0.0);
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float4 cx2= DisplacementMap.SampleLevel(texSampler, float2(uv2.x - sx, uv2.y),0.0);
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float4 c = DisplacementMap.SampleLevel(texSampler, float2(uv2.x, uv2.y),0.0);
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float cc= (c.r+ c.g +c.b);
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float x1= (cx1.r + cx1.g + cx1.b) / 3;
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float x2= (cx2.r + cx2.g + cx2.b) / 3;
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float y1= (cy1.r + cy1.g + cy1.b) / 3;
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float y2= (cy2.r + cy2.g + cy2.b) / 3;
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float2 d = float2( (x1-x2) , (y1-y2));
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float len = length(d);
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float a = length(d) ==0 ? 0 : atan2(d.x, d.y) + Angle / 180 * 3.14158;
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float2 direction = float2( sin(a), cos(a));
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float2 p2 = direction * (Displacement * len + DisplaceOffset) * float2(height/ height, 1);
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float4 t1= float4(0,0,0,0);
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for(float i=-0.5; i< 0.5; i+= 1.0/ abs(SampleCount))
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{
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t1+=Image.SampleLevel(texSampler, uv + p2 * i,0.0);
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}
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//c.r=1;
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float4 c2=t1/SampleCount;
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c2.a = clamp( c2.a, 0.00001,1);
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outputTexture[input.xy] = c2;
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}
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