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Also consider other alpha modes

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This commit is contained in:
Andrew Murray 2020-04-20 18:53:37 +10:00
parent e10cab42f1
commit 9390e5636a
1 changed files with 7 additions and 1 deletions
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8
src/libImaging/Paste.c
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@ -380,7 +380,13 @@ fill_mask_L(Imaging imOut, const UINT8* ink, Imaging imMask,
for (x = 0; x < xsize; x++) {
for (i = 0; i < pixelsize; i++) {
UINT8 channel_mask = *mask;
if (strcmp(imOut->mode, "RGBA") == 0 && i != 3) {
if ((
strcmp(imOut->mode, "RGBa") == 0 ||
strcmp(imOut->mode, "RGBA") == 0 ||
strcmp(imOut->mode, "La") == 0 ||
strcmp(imOut->mode, "LA") == 0 ||
strcmp(imOut->mode, "PA") == 0
) && i != 3) {
channel_mask = 255 - (255 - channel_mask) * (1 - (255 - out[3]) / 255);
}
out[i] = BLEND(channel_mask, out[i], ink[i], tmp1);