AMDGPU-PRO is not a driver, but a set of libraries containing
opencl,vulkan and advanced media framework. It operates on top of amdgpu.
Mesa is the open source implementation of OpenGL, Vulkan, et al. graphics API
specifications. If you are using proprietary AMD drivers then I understand
all the graphics API instructions will go through these proprietary drivers,
instead of being translated by Mesa.
As you said, it could be seen as an alternative to mesa, but will not
change anything about the firmware or the amdgpu driver. It therefore
will not change anything about the framebuffer, since this is handled by
the driver.
That said, I do not have the described problems when starting gamescope
from a tty, so my guess now is that its a Hyprland issue. I filed a bug
there. I will also try to start Hyprland using amdgpu-pro instead of mesa.
Thank you for your time
