K11MCH1 00775f0511 Fall back automatically on Qualcomm drivers with fewer capabilities ...

Older Adreno drivers such as the 8 Gen 2's 0.676.1 lack
VK_EXT_external_memory_dma_buf, DRM modifiers and calibrated timestamps.
They failed device creation in the WSI layer, failed Proton games on the
zero-copy path, and corrupted the Steam UI under GPU compositing.

- WSI patch 0005 makes the Wayland platform optional per device, so a
  device without its extensions stays usable for X11 swapchains instead
  of failing vkCreateDevice.
- droiddeck-qualcomm-caps checks DMA-BUF export and import, the swapchain
  extensions and Gamescope's linux-dmabuf once per session; Proton games
  use the zero-copy WSI path only when it passes and stay on X11 SHM
  otherwise. The session log records the verdict.
- The Steam browser uses software compositing when Zink offers less than
  OpenGL 4.0, with BL_STEAM_CEF_SOFTWARE as the manual override.

Verified on the Adreno 740 (falls back to SHM and software compositing,
UI correct) and the Adreno 840 (zero-copy and GPU compositing unchanged).

(cherry picked from commit d8d0b10cced1f21a1e9bc7dca00efd89b389adb3)

2026-10-25 02:11:20 +09:00

..

src

Fall back automatically on Qualcomm drivers with fewer capabilities

2026-10-25 02:11:20 +09:00

build.gradle

Present Qualcomm Proton games through Gamescope's zero-copy WSI path

2026-10-25 02:11:20 +09:00