Arx Libertatis does not load textures when using Mesa

[dreamer]

To work around this issue, start the game using --debug-gl launch option.

To reproduce: start the game without any parameters on any GPU using Mesa (so far tested on Intel Sandy Bridge, RX590, Vega 56).

[edit] received a report using Intel HD 630 where the problem was not reproduced.

The game starts without any textures and looks like this in result:

More info

• does not seem to happen on NVIDIA hardware at all
• does not seem to happen when Arx Libertatis is compiled locally (!)
• game log when bug is visible: https://gist.github.com/dreamer/db1bd1618c5c165f29785bfd3334c8ae
• game log when run with --debug-gl option (textures are ok in this case!): https://gist.github.com/dreamer/02f21cfc9b9ba28aac623e25d1b8b6fd
• when starting the game you can press alt-enter and fully textured menu will flash for a fraction of a second.

[d10sfan]

Looking at the build logs, do you see anything that stands out in comparsion between the working local copy and the CI tool built one? I was looking at the build log here: https://gitlab.com/luxtorpeda/packages/arxlibertatis/-/jobs/266842676

Two interesting pieces stood out but not sure if it would contribute:

• -- Looking for SDL_VIDEO_DRIVER_WAYLAND - not found
• -- Checking for module 'epoxy'
  -- No package 'epoxy' found
  -- Could NOT find Epoxy (missing: Epoxy_LIBRARY Epoxy_INCLUDE_DIR)

Also curious if the local copy is using different versions of the libraries.

And it's interesting that --debug-gl causing it to start working. I know very little about OpenGL, but wondering if the debug mode is letting the application ignore these errors that are getting spit out: API error #3: GL_INVALID_ENUM in glMatrixMode(mode).

"SDL is using the X11 video backend but GLEW was built without GLX support". This is also interesting, does that show up when you run the locally built copy?