https://bugs.kde.org/show_bug.cgi?id=443951
--- Comment #26 from Vlad Zahorodnii <vlad.zahorod...@kde.org> --- Aha, I have a theory why it happens. The WindowThumbnail item will delay the destruction of the thumbnail texture to avoid destroying a texture which is still in use. On the other hand, the GLTexture seems to have a ref-counted VBO (https://invent.kde.org/plasma/kwin/-/blob/bd3d275293821acd490a8d4e28e59860b8f0bae5/src/libkwineffects/kwingltexture.cpp#L295), which is destroyed when the last texture is gone. Since the thumbnail texture can be alive even after compositing has been re-initialized. KWin can continue using old VBO, which is long time gone. Just to confirm my theory, I made the WindowThumbnail destroy the thumbnail texture immediately and it seems like there are no glitches anymore.. -- You are receiving this mail because: You are watching all bug changes.
