Sviatoslav Peleshko
b0b1907fa5
Currently on each pop we reset the PopAttribState to the value from the
last push. But if we assume a sequence "push(X), push(Y), changeX(),
pop(), pop()": the first pop will remove X from PopAttribState, so the
second pop will not even try to restore X, leaving a wrong value forever.
Fix this by "bubbling up" the changed states that were not restored by pop.
Fixes: 68030bbf ("mesa: only pop states in glPopAttrib that have been changed since glPushAttrib")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/11417
Signed-off-by: Sviatoslav Peleshko <sviatoslav.peleshko@globallogic.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30038>
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