backend: xrender: force 32bit ARGB visual when adding rounded corners

Force the temporary picture to a 32-bit ARGB visual when masking it for
rounded corners to keep the transparency information. Otherwise, windows
with a 24-bit visual would get black corners instead.

Authored-by: Bernd Busse <bernd@busse-net.de>
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Bernd Busse 2023-01-19 23:52:58 +01:00 committed by Yuxuan Shui
parent e60cb65672
commit fd9c52d0ee
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1 changed files with 9 additions and 3 deletions

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@ -250,10 +250,16 @@ compose_impl(struct _xrender_data *xd, struct xrender_image *xrimg, coord_t dst,
}
if (((img->color_inverted || img->dim != 0) && has_alpha) || img->corner_radius != 0) {
// Apply image properties using a temporary image, because the source
// image is transparent. Otherwise the properties can be applied directly
// on the target image.
// image is transparent or will get transparent corners. Otherwise the
// properties can be applied directly on the target image.
// Also force a 32-bit ARGB visual for transparent corners, otherwise the
// corners become black.
auto visual =
(img->corner_radius != 0 && inner->depth != 32)
? x_get_visual_for_standard(xd->base.c, XCB_PICT_STANDARD_ARGB_32)
: inner->visual;
auto tmp_pict = x_create_picture_with_visual(
xd->base.c, inner->width, inner->height, inner->visual, 0, NULL);
xd->base.c, inner->width, inner->height, visual, 0, NULL);
// Set clip region translated to source coordinate
x_set_picture_clip_region(xd->base.c, tmp_pict, to_i16_checked(-dst.x),