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REVIEWED: ImageAlphaPremultiply(), optimization

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raysan5 2020-06-08 18:24:53 +02:00
parent 40bc6afdbd
commit 82f7dd017e
1 changed files with 13 additions and 4 deletions
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17
src/textures.c
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@ -1182,10 +1182,19 @@ void ImageAlphaPremultiply(Image *image)
for (int i = 0; i < image->width*image->height; i++)
{
alpha = (float)pixels[i].a/255.0f;
pixels[i].r = (unsigned char)((float)pixels[i].r*alpha);
pixels[i].g = (unsigned char)((float)pixels[i].g*alpha);
pixels[i].b = (unsigned char)((float)pixels[i].b*alpha);
if (pixels[i].a == 0)
{
pixels[i].r = 0;
pixels[i].g = 0;
pixels[i].b = 0;
}
else if (pixels[i].a < 255)
{
alpha = (float)pixels[i].a/255.0f;
pixels[i].r = (unsigned char)((float)pixels[i].r*alpha);
pixels[i].g = (unsigned char)((float)pixels[i].g*alpha);
pixels[i].b = (unsigned char)((float)pixels[i].b*alpha);
}
}
RL_FREE(image->data);