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Bug fix for skip on only one bmp

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This commit is contained in:
Melissa LeBlanc-Williams 2023-08-10 08:15:18 -07:00
parent db23a9c9fe
commit ce61fd857b
1 changed files with 8 additions and 2 deletions
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10
shared-module/bitmaptools/__init__.c
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@ -972,10 +972,16 @@ void common_hal_bitmaptools_alphablend(displayio_bitmap_t *dest, displayio_bitma
}
} else if (blend_source1) {
// Apply iFactor1 to source1 only
pixel = spix1 * ifactor1 / 256;
int r = (spix1 & r_mask) * ifactor1 / 256;
int g = (spix1 & g_mask) * ifactor1 / 256;
int b = (spix1 & b_mask) * ifactor1 / 256;
pixel = r | g | b;
} else if (blend_source2) {
// Apply iFactor2 to source1 only
pixel = spix2 * ifactor2 / 256;
int r = (spix2 & r_mask) * ifactor2 / 256;
int g = (spix2 & g_mask) * ifactor2 / 256;
int b = (spix2 & b_mask) * ifactor2 / 256;
pixel = r | g | b;
} else {
// Use the destination value
pixel = *dptr;