On Tue, 3 Jun 2003, Linus Torvalds wrote:
[ Finally got some debugging time for the other DRI problem I've seen, namely hugely flashing textures in tuxracer on i830, but _only_ iff MTRR
support is compiled into the kernel ]
I've got some more information, including a workaround..
I get horrible texture flashing iff:
- MTRR's are enabled (no idea why it matters, but it does. It might just be timing-related, since proper MTRR programming speeds up things by a factor of two)
- I only allocate 32MB of video memory.
I see this too (I haven't tried disabling mtrrs). It looks a lot like the driver is using the framebuffer to store texture data & getting into all sorts of troubles...
Keith
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