https://bugs.kde.org/show_bug.cgi?id=402583
--- Comment #5 from Martin Flöser <[email protected]> --- (In reply to Vlad from comment #4) > (In reply to Martin Flöser from comment #3) > > Most likely your gpu is not up to the task, but I think there are some > > things you can improve in your setup: first of all change the window > > decoration. Use default breeze. Blur behind windows is probably too > > expensive for your gpu. > > > > That it increases CPU usage is probably nothing we can do about. Some > > drivers emulate functionality on the CPU without telling the software. It's > > damn stupid but gives them a check for a higher OpenGL Version and more > > games "work". > > Ok, so nothing can be done about it. I'm pretty sure OpenGL2.1 is the > correct max for this gpu. nothing is being emulated, except when it switches > to full software rendering. Nah, especially Intel used to emulate some extensions on the GPU. It's like you can do all of OpenGL 2.1 except for one or two extensions. So it emulates those to get the tag 2.1. Then games requiring OpenGL 2.1 (without checking extensions individually) start to work. We don't go for version but for extensions, so we then use the not supported extensions. I think this behavior of the Intel driver is damn stupid, but I can understand why they do it. Our own source code documentation says that your driver does either GL 2 or 2.1 from hardware side. With a quick google I couldn't figure out what's really supported. > Is there something fundamentally different with KDE's blur compared to > deepin? > > Deepin has full blur behind windows aswell and there my GPU never failed to > deliver 60fps on multiple windows or fullscreen windows... There's blur and blur. I don't know what algorithm Deepin uses, but for our old blur effect we used to have a fake blur. Depending on the level of transparency one can do very fast and cheap but bad looking blur. -- You are receiving this mail because: You are watching all bug changes.
