wehub-resource-sync
84 lines
1.9 KiB
HLSL
84 lines
1.9 KiB
HLSL
cbuffer ParamConstants : register(b0)
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{
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float2 Offset;
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float2 Stretch;
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float Scale; // 4
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float Rotation; // 5
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float RepeatMode; // 6
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}
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cbuffer IntParams : register(b2)
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{
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int2 OrgResolution;
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int2 TargetResolution;
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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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Texture2D<float4> ImageA : register(t0);
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sampler texSampler : register(s0);
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float mod(float x, float y)
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{
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return (x - y * floor(x / y));
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}
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float2 mod(float2 x, float2 y)
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{
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return (x - y * floor(x / y));
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}
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float4 psMain(vsOutput psInput) : SV_TARGET
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{
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float height, width;
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ImageA.GetDimensions(height, width);
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float2 aspect2 = width / height;
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float2 uv = psInput.texCoord;
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float sourceAspectRatio = (float)OrgResolution.x / (float)OrgResolution.y;
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float2 divisions = float2(sourceAspectRatio / Stretch.x, 1 / Stretch.y) / Scale;
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float2 p = psInput.texCoord;
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float2 offset = Offset * float2(-1, 1); // translation on X will match the user's movement
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p += offset;
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p -= 0.5;
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// Rotate
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float imageRotationRad = (-Rotation - 90) / 180 * 3.141578;
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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 *= sourceAspectRatio;
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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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p.x *= aspect2 / sourceAspectRatio;
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p *= divisions;
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// float2 samplePos = (RepeatMode > 3.5) ? p
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// : p + 0.5;
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// float2 rescale = float2((float)OrgResolution.x / (float)TargetResolution.x, //
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// (float)OrgResolution.y / (float)TargetResolution.y);
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float2 samplePos = (p + 0.5);
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float4 imgColorForCel = ImageA.Sample(texSampler, samplePos);
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return imgColorForCel;
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} |