forked from bartvdbraak/blender
Fix #34966: cycles packed PNG images were showing alpha fringe, packed images
were not properly premultiplied.
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@ -693,6 +693,14 @@ bool BlenderSession::builtin_image_pixels(const string &builtin_name, void *buil
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}
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}
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/* premultiply, byte images are always straight for blender */
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unsigned char *cp = pixels;
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for(int i = 0; i < width * height; i++, cp += channels) {
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cp[0] = (cp[0] * cp[3]) >> 8;
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cp[1] = (cp[1] * cp[3]) >> 8;
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cp[2] = (cp[2] * cp[3]) >> 8;
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}
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return true;
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}
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