Michel Dänzer 3e044b1e64 glamor: Add and use glamor_drawable_effective_depth helper ...

Consider the following window hierarchy, from ancestors to descendants:

 A
 |
 B
 |
 C

If both A & C have depth 32, but B has depth 24, C must effectively
behave as if it had depth 24, even if its backing pixmap has depth 32
as well.

Fixes the xmag issue described in the GitLab issue below.

Issue: https://gitlab.freedesktop.org/xorg/xserver/-/issues/1564

2023-07-20 10:14:56 +02:00

3.8 KiB

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