[Bug 30960] [r300g][glsl][libtxc_dxtn] Texture corruption in Xonotic with lightmaps

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30960

--- Comment #39 from Marek Olšák <maraeo at gmail.com> 2010-10-24 15:38:54 PDT ---
(In reply to comment #38)
> (In reply to comment #32)
> > In the kernel, there is function r100_copy_blit for copying buffers between RAM
> > and VRAM using the 2D engine, and it's hooked up in the TTM. The function is
> > used on r100 up to r500.
> > 
> > I believe switching between the 2D and 3D engine doesn't work as it should or
> > we don't flush some cache or something.
> 
> Interesting theory - should this bug now include a title tag for r100-r500 DRM
> kernel modules?

Not necessary, it's just a theory. It would be interesting to rewrite that
function to use the 3D engine on r300 and see if it fixes anything.

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