SUMMARY When I try to start KWin with KWIN_COMPOSE=O2ES, it fails, because it tries to use a feature that is not implemented by the OpenGL driver. The used driver is i915, which supports OpenGL ES 2.0. SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Plasma Version: 6.0.1 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 ADDITIONAL INFORMATION kwin_wayland_wrapper[27009]: No provider of glBlitFramebuffer found. Requires one of: kwin_wayland_wrapper[27009]: Desktop OpenGL 3.0 kwin_wayland_wrapper[27009]: GL_ARB_framebuffer_object kwin_wayland_wrapper[27009]: OpenGL ES 3.0 kwin_wayland_wrapper[27009]: GL_EXT_framebuffer_blit kwin_wayland_wrapper[27009]: GL_NV_framebuffer_blit
Does this also happen if you disable the contrast effect? Afaict that's the only place glBlitFramebuffer isn't guarded by checks for if it's supported or not
(In reply to Zamundaaa from comment #1) > Does this also happen if you disable the contrast effect? If I disable the Background Contrast effect, this no longer occurs. As soon as I enable it again in the settings, it happens again. So yes, it caused by that effect.
With KWin 6.1.0, I get the following error, and KWin refuses to start: kwin_wayland_wrapper[1231]: No provider of glBufferStorage found. Requires one of: kwin_wayland_wrapper[1231]: Desktop OpenGL 4.4 kwin_wayland_wrapper[1231]: GL_ARB_buffer_storage kwin_wayland_wrapper[1231]: GL_EXT_buffer_storage
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/5995
Git commit 0773db0710d54f696a1bf4c9a915b47a467788e2 by Xaver Hugl. Committed on 26/06/2024 at 12:52. Pushed by zamundaaa into branch 'master'. opengl: glBufferStorage is not supported on GL ES by default M +1 -1 src/opengl/openglcontext.cpp https://invent.kde.org/plasma/kwin/-/commit/0773db0710d54f696a1bf4c9a915b47a467788e2
Git commit 60a483471c1b5f39cf3ed5c75014803fef57c90e by Xaver Hugl. Committed on 26/06/2024 at 12:52. Pushed by zamundaaa into branch 'master'. opengl/glframebuffer: handle missing support for blits on Wayland If OpenGL blits aren't supported, we can still copy the area by sampling the texture for the screen on Wayland M +22 -0 src/opengl/glframebuffer.cpp https://invent.kde.org/plasma/kwin/-/commit/60a483471c1b5f39cf3ed5c75014803fef57c90e
Git commit a95a2196f380ce5208d37dd44ea802f97d6d4a9a by Xaver Hugl. Committed on 26/06/2024 at 13:37. Pushed by zamundaaa into branch 'Plasma/6.1'. opengl/glframebuffer: handle missing support for blits on Wayland If OpenGL blits aren't supported, we can still copy the area by sampling the texture for the screen on Wayland M +22 -0 src/opengl/glframebuffer.cpp https://invent.kde.org/plasma/kwin/-/commit/a95a2196f380ce5208d37dd44ea802f97d6d4a9a
Git commit 40a2dd823be444c7f89dc770ecd26bc632d67660 by Xaver Hugl. Committed on 26/06/2024 at 13:37. Pushed by zamundaaa into branch 'Plasma/6.1'. opengl: glBufferStorage is not supported on GL ES by default M +1 -1 src/opengl/openglcontext.cpp https://invent.kde.org/plasma/kwin/-/commit/40a2dd823be444c7f89dc770ecd26bc632d67660