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(BMP): inverted alpha channel.

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commented out for now, as there's no way to correctly recognize it.
This commit is contained in:
morkt 2023-09-07 12:32:52 +04:00
parent e14b7e444c
commit e68b7a5ede
1 changed files with 7 additions and 0 deletions
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7
GameRes/ImageBMP.cs
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@ -220,6 +220,13 @@ namespace GameRes
file.Read (pixels, dst, stride);
for (int x = 3; !has_alpha && x < stride; x += 4)
has_alpha = pixels[dst+x] != 0;
/* // sometimes alpha channel is inverted
for (int x = 3; x < stride; x += 4)
{
pixels[dst+x] ^= 0xFF;
has_alpha = has_alpha || pixels[dst+x] != 0;
}
*/
}
PixelFormat format = has_alpha ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
return ImageData.Create (info, format, null, pixels, stride);