The Pi 5 GPU is certainly no rocketship in the grand scheme of things. However, it's worth mentioning that it's on average around 3x the performance of the Pi 4 GPU. As for theoretical numbers, I don't think any official figures have been released yet. From what I've gathered so far, it may be that they have doubled the execution resources while at the same time increased the V3D clock from 500 to 960 MHz. That could put the VC7 at ~123 GFLOPS versus 32 GLOPS on the VC6.2nd is the GPU...
So far from what I can see the GPU is absolutely horrendous and completely does not fit the levels of CPU and I/O performance I am seeing otherwise.
Openarena runs so bad I would expect to get better performance out of Voodoo 3... heck, Bashnee even. Its ~60fps at 640x480 and no, its not due to v-sync and I also tested it in both X11 and Wayland. With V3D at 1150MHz it was 67fps, lol.
Dhewm3 (Doom3) runs more like some kind of GeForce 6200/Radeon 9550 or something, maybe better but not much better. Not sure how its possible to have 1GHz GPU with supposedly more than 10 pipes to run as bad as this one does.
Anyways, GPU is not the strong point of this SBC. Since however there is no such thing as games on Linux on ARM and all the games I can play on something else its not like it matters. At least not until we can still comfortably use X11. Wayland as can be already seen requires quite more powerful hardware than Pi has and why it probably lags so much. I do not think core issues with lag with Wayland can be resolved with such weak GPU.
ps. BTW now I understand why Jeff wants external GPU on Raspberry Pi so badly
One GPU test I've run (among many) is vkQuake3 (which uses Vulkan). At 1920x1080, trilinear filtering, max textures and no AA/AF it gets ~150 FPS. The Pi 4 manages ~50 FPS at the same settings.
Finally, if you use Wayland and the applications you run use SDL, you probably want to execute export SDL_VIDEODRIVER=wayland first. Otherwise you may get various severe performance or scaling issues.
Statistics: Posted by Mikael — Fri Jan 26, 2024 12:34 pm