Shadow demo is broken on Linux with "radeon" driver

[ellie]

The shadow demo is broken on Linux with "radeon" driver. It just shows "Shadow Demo: Video driver reports that shaders are not supported.". Since this driver and GPU support OpenGL 4.1 easily (I hear 4.5 is also almost done and just missing some minor extensions), I think this is a problem with how the demo is written rather than with the capabilities of the driver.

glxinfo output is attached!

[rdb (rdb)]

Please attach the output when setting "notify-level-glgsg debug". Also, let me know more about your Panda3D build, whether you built it with Cg shader support enabled.

[ellie (et1234567)]

I'm pretty certain I don't have Cg support in my build, since the Cg compiler has apparently been removed entirely from Fedora a while ago. Anyway, here is the engine output with the advanced shadows example and notify-level-glgsg debug:

[jonas@falcon shadows]$ python3 ./advanced.py
Using deprecated DirectStart interface.
Known pipe types:
  glxGraphicsPipe
(all display modules loaded.)
:display:gsg:glgsg(debug): loading uncompressed texture _0
:display:gsg:glgsg(debug): loading new texture object for _0, 256 x 256 x 1, z = 0, mipmaps 1, uses_mipmaps = 0
:display:gsg:glgsg(debug): GLGraphicsStateGuardian 0x557263ceac20 destructing
[jonas@falcon shadows]$

Is Cg still required for the shader generator? Any chance of that changing, at least for some of the shaders? (Given that Cg is deprecated)

[ellie (et1234567)]

I just recompiled with Cg available, and now it works!