wehub-resource-sync
104 lines
2.3 KiB
HLSL
104 lines
2.3 KiB
HLSL
//RWTexture2D<float4> outputTexture : register(u0);
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Texture2D<float4> inputTexture : register(t0);
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sampler texSampler : register(s0);
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cbuffer ParamConstants : register(b0)
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{
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float4 Fill;
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float4 Background;
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float2 Size;
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float2 Offset;
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float2 OffsetCopies;
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float Rotate;
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float LineWidth;
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float Fade;
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float Copies;
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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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cbuffer Resolution : register(b1)
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{
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float TargetWidth;
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float TargetHeight;
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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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static float PI2 = 2*3.141578;
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#define mod(x,y) (x-y*floor(x/y))
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float4 psMain(vsOutput psInput) : SV_TARGET
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{
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float2 uv = psInput.texCoord;
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//float xxx = Copies/10;
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//return float4(smoothstep(xxx, xxx, uv.x ),0,0,1 );
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float4 orgColor = inputTexture.SampleLevel(texSampler, uv, 0.0);
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float aspectRation = TargetWidth/TargetHeight;
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float2 p = uv;
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p-= 0.5;
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// Rotate
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float imageRotationRad = (-Rotate - 90) / 180 *3.141578;
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float aspectRatio = TargetWidth/TargetHeight;
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float sina = sin(-imageRotationRad - 3.141578/2);
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float cosa = cos(-imageRotationRad - 3.141578/2);
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p.x *=aspectRation;
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p = float2(
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cosa * p.x - sina * p.y,
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cosa * p.y + sina * p.x
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);
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p.x /=aspectRation;
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//return float4(p,0,1);
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float cc=0;
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int copiesCount = clamp((int)Copies+0.5, 1, 20);
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float2 pp = p;
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float feather = LineWidth* Fade/2;
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for(int i=0; i < copiesCount; i++) {
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pp.y = p.y+ sin(
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pp.x / Size.x * PI2/2
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+ Offset.x/2 * PI2
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+ OffsetCopies.x * PI2 * i
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) * Size.y/2 + Offset.y + OffsetCopies.y *i;
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float c = abs(pp.y);
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c = smoothstep(LineWidth/2 + feather, LineWidth/2 - feather, c);
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c = smoothstep(0,1,c);
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cc = max(cc, c);
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}
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//return float4(cc,cc,cc,1);
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float4 col= lerp(Background, Fill, cc);
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//return col;
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//float4 orgColor = inputTexture.Sample(texSampler, psInput.texCoord);
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float a = clamp(orgColor.a + col.a - orgColor.a*col.a, 0,1);
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float3 rgb = (1.0 - col.a)*orgColor.rgb + col.a*col.rgb;
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return float4(rgb,a);
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}
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