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Faster conversion of plaette to NRGB for opaque colors

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Kovid Goyal 2025-10-09 16:57:28 +05:30
parent 2dea3087b3
commit 9212c08638
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2
tools/utils/images/to_rgb.go
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@ -177,6 +177,8 @@ func newScannerRGB(img image.Image, opaque_base NRGBColor) *scanner_rgb {
switch a {
case 0:
s.palette[i] = opaque_base
case 0xffff:
s.palette[i] = NRGBColor{uint8(r >> 8), uint8(g >> 8), uint8(b >> 8)}
default:
blend(ds, s.opaque_base, uint8((r*0xffff/a)>>8), uint8((g*0xffff/a)>>8), uint8((b*0xffff/a)>>8), uint8(a>>8))
s.palette[i] = NRGBColor{d[0], d[1], d[2]}