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https://bugs.freedesktop.org/show_bug.cgi?id=8348
[EMAIL PROTECTED] changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |WONTFIX
------- Additional Comments From [EMAIL PROTECTED] 2006-11-01 16:30 -------
The bug lie in radeon_vtmx code, more specificly in DrawElements
and DrawRangeElements. Basicly glDrawElements and glDrawRangeElements
let you draw a number of (count) elements, and you give an array of
indices in the array of vertices. Thus you have to upload max - min
vertex where max is the highest index in the indices array and min
is the lowest index in the indices array. The (max - min) value isn't
checked against RADEON_BUFFER_SIZE thus the DrawElements might ask
for DMA region which can't be allocated.
I don't see any easy fix to that, this likely need a bunch of corner
case test. So i think we should avoid loosing time fixing this, we
will get a better solution when i (or any other person :)) port the
r300 driver to the shiny new TTM infrastructure and then get benefits
from the generic VBO handling they will come with this =).
As a workaround i suggest to disable vtmx code, you could do that by
commenting out #define RADEON_VTXFMT_A in r300_context.h
A side note: this bug is triggered by ppracer because it seems that
ppracer is growing its vertices array with new vertex while playing
the game.
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