Issues with Mesa 19.3.2 OpenGL ES 3.1 drivers on RPI 4

[heretique]

Hi everyone,

I did some tests with the new Mesa 19.3.2 OpenGL ES 3.1 drivers and I've uploaded some videos on Youtube in the hope that someone working on the drivers might find them useful.
I was interested mostly in Compute Shaders and I've noticed some issues when running some examples using CS.
Each video has a description where I detail the issue.

Hope this is helpful!

[txenoo]

Hi heretique,

We have been aware of these issues until recently, I would recommend you to report them at Mesa Gitlab at https://gitlab.freedesktop.org/mesa/mesa so the driver developers get aware of them soon

I've been checking the PowerVR SDK demos.

• Raspberry Pi 4, Mesa 19.3.2, GLES 3.1 Compute Shader Test (PowerVR SDK) it is already fixed at Mesa 19.3.5, Mesa 20.0.1 with the commit v3d: Sync on last CS when non-compute stage uses resource written by CS

• Raspberry Pi 4, Mesa 19.3.2, GLES 3.1 Support Test (PowerVR SDK Image-based lighting) the issue has not been fixed yet, I've created an Issue to track it at Mesa Gitlabs Issue 2785

I haven't reproduced yet your issues with bgfx demos, but it seems that quite probably that the n-body bgfx issue could be fixed with last mesa, as it could be the same issue that we had with the Particle PowerVR demo. Could you try to execute them using mesa master ?

Are you using a specific repository of bgfx, I tried and the compilation wasn't direct, as some of the binaries included aren't compiled for armv7? So it would take more time to reproduce them