Created attachment 131455 [details] Must be supported OpenGL version by KWin compositor SUMMARY STEPS TO REPRODUCE 1. Install kde. 2. Open Display => Compositing. 3. Max supported version of OpenGL is 3.1 which is dated 2009!!!! It's disgustingly lagging, slow etc. OBSERVED RESULT EXPECTED RESULT OpenGL 4.6 SOFTWARE/OS VERSIONS Linux/KDE Plasma: latest opensuse and latest kde (available in About System) KDE Plasma Version: latest KDE Frameworks Version: latest Qt Version: 5.15 ADDITIONAL INFORMATION Please, please finally rework and update compositor!! It's disgustingly slow, uses over 10 years old legacy OpenGL 3.1, while must support 4.6. All drivers support 4.6 out of the box, but KDE does nothing to update compositor's OpenGL support. It's not modern, but very old school slow as hell compositing. Please release update to support OpenGL 4.6. Thank you very much!
In general OpenGL versions supported as selectable use too legacy and slow technologies not using the latest technologies resulting on simple things loading CPU up to 100% per core, while GPU remains almost idle (below 5% usage). So please consider updating target OpenGL version to latest 4.6 please
Using core profile arguably could make things faster. Sure. We expose that. I don't understand how making a context with a newer opengl version will make anything faster, could you cite a resource on that.
Maybe the bug reporter wants to know that whether kwin can make use of the new extensions or features available in OpenGL 4.x (maybe because he thinks that the new features are more efficient?).
As a general rule there are not for the very simple rendering that we do. If some profiling of frames finds a blocker that has some faster replacement, sure we shouldn't ignore something just because it's 4.x, but changing the minimum version first won't provide anything as far as I know. I will leave this open so OP can clarify what specific things he meant.
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!