AW: wayland: wrong tiling with wl_drm on Vivante GC2000

2023-03-31 Thread Christian Gudrian
Hi, Lucas! Thanks for the explanation. That fits the mental model I've built up. As it turned out it was the Wayland client computing and displaying the FPS counter which reduced the FPS in the first place. Contrary to what I initially said the FPS reduction was also present using wl_drm (I got

AW: wayland: wrong tiling with wl_drm on Vivante GC2000

2023-03-30 Thread Christian Gudrian
Hi, Daniel! Thanks for your reply. > You need to force QtWayland to use the wp-linux-dmabuf-v1 platform > integration for the compositor. Yes. I've did that before and that indeed solves the tiling problem. However the CPU usage is much higher and the FPS drops from 60 to 30 (I can see a simi

wayland: wrong tiling with wl_drm on Vivante GC2000

2023-03-30 Thread Christian Gudrian
Hello! We're running a custom Wayland compositor based on Qt Wayland on an i.MX6 Quad system with a Vivante GC2000 GPU using the Mesa Gallium driver. While the compositor itself displays correctly, client buffers are displayed with wrong tiling. So far I've found out, that the client's __DRIim