Using WayVR with Hybrid Graphics

[soleera]

I had some issues getting WayVR to work on my laptop with hybrid graphics (AMD iGPU / Nvidia dGPU) using the proprietary Nvidia drivers. On launch vkPhysicalDevice defaults to the Nvidia dGPU as expected, however when attempting to open the WayVR dashboard, the OpenGL ES Renderer defaults to the AMD iGPU. This causes a drm_format_modifier mismatch in vulkano. To resolve this, I had to run wlx-overlay-s with EGL_PLATFORM=wayland __EGL_VENDOR_LIBRARY_FILENAMES=/usr/share/glvnd/egl_vendor.d/10_nvidia.json __NV_PRIME_RENDER_OFFLOAD=1. Might be helpful to make a note of this in the docs just in case anyone else has this issue in future.