[Bug 28294] [r300g] Unigine Sanctuary v2.2: black glitches

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https://bugs.freedesktop.org/show_bug.cgi?id=28294

--- Comment #31 from Pavel OndraÄka <drakkk@xxxxxxxxxx> 2010-09-27 15:09:51 PDT ---
(In reply to comment #30)
> (In reply to comment #29)
> > Created an attachment (id=38758)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=38758)
> > screenshot with current mesa git (    dab2a7660a407364a33337327743b56ea9701d9b)
> 
> Hello,
> 
> Problem is that I cannot test r300g. One bug was outstanding in my merge. It
> was solved few hours after glsl2 merge. So:
> 1/ One bug or more in the mesa program optimizations could cause that bug
> 2/ One bug or more in glsl2 could cause it
> 3/ Both
> 
> Could you comment the body of function _mesa_optimize_program in
> src/mesa/program/prog_optimize.c (this is the last function of the source
> file)? This will deactivate my commit.
> 
> Just to see if there is something wrong with glsl2 merge first.
> 
> Cheers,
> Ben

Hi, I did comment out the body of _mesa_optimize_program and I'm now hiting
this assertion "Sanctuary: program/program.c:879: _mesa_find_used_registers:
Assertion `inst->DstReg.Index < usedSize' failed.", this is with shaders
quality high, with low there is no change (starts but no shadows). 
I've found out that I can make shadows work when I start it with
RADEON_DEBUG=noopt, which if I understand it correctly disables all
optimizations.

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