I am trying to check something in my OpenGL application (uses the latest versions of PyGame, PyOpenGL and PyImGui packages) with RenderDoc. However, RenderDoc tells me that my app’s OpenGL context is not 3.2+.

And indeed, I messed up with setting up my context, namely placed

pygame.display.gl_set_attribute(pygame.GL_CONTEXT_MAJOR_VERSION, 3)
pygame.display.gl_set_attribute(pygame.GL_CONTEXT_MINOR_VERSION, 3)

after calling

pygame.display.set_mode(display, pygame.DOUBLEBUF | pygame.OPENGL | pygame.RESIZABLE)

and not before. Using pygame.display.gl_get_attribute() for the above mentioned flags above I was actually getting OpenGL 2.2 and not 3.3.

However, after I set the version properly ImGUI is crashing with the following error:

Traceback (most recent call last):
  File "/home/user/miniconda3/envs/CGI/lib/python3.11/site-packages/OpenGL/latebind.py", line 41, in __call__
    return self._finalCall( *args, **named )
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: 'NoneType' object is not callable
 
During handling of the above exception, another exception occurred:
 
Traceback (most recent call last):
  File "/home/user/Projects/CGI/visualizer/renderer.py", line 353, in <module>
    main(logger, config)
  File "/home/user/Projects/CGI/visualizer/renderer.py", line 248, in main
    gui = GUI(width, height, logger, wireframe_enabled, bbox_enabled, zoom_factor, transl_factor, dataloader)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/Projects/CGI/visualizer/Gui.py", line 12, in __init__
    self.impl = PygameRenderer()
                ^^^^^^^^^^^^^^^^
  File "/home/user/miniconda3/envs/CGI/lib/python3.11/site-packages/imgui/integrations/pygame.py", line 14, in __init__
    super(PygameRenderer, self).__init__()
  File "/home/user/miniconda3/envs/CGI/lib/python3.11/site-packages/imgui/integrations/base.py", line 18, in __init__
    self.refresh_font_texture()
  File "/home/user/miniconda3/envs/CGI/lib/python3.11/site-packages/imgui/integrations/opengl.py", line 251, in refresh_font_texture
    gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_ALPHA, width, height, 0, gl.GL_ALPHA, gl.GL_UNSIGNED_BYTE, pixels)
  File "/home/user/miniconda3/envs/CGI/lib/python3.11/site-packages/OpenGL/latebind.py", line 45, in __call__
    return self._finalCall( *args, **named )
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/miniconda3/envs/CGI/lib/python3.11/site-packages/OpenGL/wrapper.py", line 877, in wrapperCall
    raise err
  File "/home/user/miniconda3/envs/CGI/lib/python3.11/site-packages/OpenGL/wrapper.py", line 870, in wrapperCall
    result = wrappedOperation( *cArguments )
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/miniconda3/envs/CGI/lib/python3.11/site-packages/OpenGL/error.py", line 228, in glCheckError
    raise GLError(
OpenGL.error.GLError: GLError(
        err = 1281,
        description = b'invalid value',
        baseOperation = glTexImage2D,
        pyArgs = (
                GL_TEXTURE_2D,
                0,
                GL_ALPHA,
                512,
                64,
                0,
                GL_ALPHA,
                GL_UNSIGNED_BYTE,
                b'x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x0...,
        ),
        cArgs = (
                GL_TEXTURE_2D,
                0,
                GL_ALPHA,
                512,
                64,
                0,
                GL_ALPHA,
                GL_UNSIGNED_BYTE,
                b'x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x0...,
        ),
        cArguments = (
                GL_TEXTURE_2D,
                0,
                GL_ALPHA,
                512,
                64,
                0,
                GL_ALPHA,
                GL_UNSIGNED_BYTE,
                b'x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x0...,
    )
)

I was unable to find info right out of the bat regarding the ImGUI integration with PyGame and where a specific version is required.