Fix T48691: Cycles - OpenCL - HDR Image mapping does not match CUDA rendering
The OpenCL texture code didn't offset the coordinates by half a pixel like the CPU code does.
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blender-bot
2023-02-14 07:49:03 +01:00
Referenced by issue #48691, Cycles - OpenCL - HDR Image mapping does not match CUDA rendering
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@ -93,8 +93,8 @@ ccl_device float4 svm_image_texture(KernelGlobals *kg, int id, float x, float y,
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r = svm_image_texture_read(kg, id, offset + ix + iy*width);
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}
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else { /* We default to linear interpolation if it is not closest */
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float tx = svm_image_texture_frac(x*width, &ix);
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float ty = svm_image_texture_frac(y*height, &iy);
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float tx = svm_image_texture_frac(x*width - 0.5f, &ix);
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float ty = svm_image_texture_frac(y*height - 0.5f, &iy);
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if(periodic) {
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ix = svm_image_texture_wrap_periodic(ix, width);
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