ERROR: CRenderer::EndFrame: GL errors occurred

[fabio]

After building and selecting a mill I get this error:

ERROR: CRenderer::EndFrame: GL errors occurred

and its techs are corrupted like in this image:

[leper]

Does this occur everytime? Could you attach your system_info.txt?

[fabio]

Yes, it happens always.

[leper]

Could you try to reproduce this in a debug build? That should give us some clues where it is failing.

[fabio]

Attached debug output. Unfortunately the integrated feature to attach gdb never worked for me (as you can see in the output), I also cannot run it under gdb myself.

[fabio]

(I mean I can't use gdb when the 0 A.D. pop up window asking what to do appears.)

[Jonathan Waller]

In 11786:

Scale images to power of 2 sizes. Fixes #1382.

[fabio]

OK, but why it works fine on other drivers and not here?

[Jonathan Waller]

Drivers for modern hardware are meant to support non power of 2 textures but most applications tend not to use them for compatibility reasons. So have a driver such as ours which has problems with NPOT textures doesn't break much and is presumably a low priority item.

From reading

​http://www.opengl.org/wiki/NPOT_Texture

I found that our problem is more specifically a non multiple of 4 texture size. This causes issues with compression as mentioned on that web page. Using 16x36 worked when I tested.