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commit 173edae4bf72e01b0dada41a406d34f976b1fc28
Author: Kim Woelders <k...@woelders.dk>
AuthorDate: Wed Jul 19 18:11:08 2023 +0200
image: Fix preservation of alpha chanel flag in imlib_clone_image()
https://git.enlightenment.org/old/legacy-imlib2/issues/17:
As per subject, the imlib_clone_image() function no longer preserves
the alpha channel value since imlib2 1.10.0.
This bug report was initially filed by Niko Tyni in Debian's bug tracker.
If you follow the subsequent link you will also find a test program that
demonstrates the regression.
https://bugs.debian.org/1041406
This upstream change is most likely the root cause of the problem
b39d33c800
It looks like an oversight where other functions were adapted
to the new alpha channel implementation, but imlib_clone_image() remains
unchanged and only copies the flags and not the new alpha byte.
---
src/lib/api.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/lib/api.c b/src/lib/api.c
index 2496527..d27658d 100644
--- a/src/lib/api.c
+++ b/src/lib/api.c
@@ -1014,6 +1014,7 @@ imlib_clone_image(void)
return NULL;
memcpy(im->data, im_old->data, im->w * im->h * sizeof(uint32_t));
+ im->has_alpha = im_old->has_alpha;
im->flags = im_old->flags;
IM_FLAG_SET(im, F_UNCACHEABLE);
im->moddate = im_old->moddate;
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