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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #47 from Pavel Ondračka <drakkk at centrum.cz> 2010-10-28 11:32:04 PDT ---
(In reply to comment #46)
> In src/mesa/dri/drivers/r300/compiler/r3xx_fragprog.c around line 120, there is
> a list of compiler passes.  Three of these passes(deadcode, dataflow optimize,
> and register allocation) are disabled when running with RADEON_DEBUG=noopt. 
> You could try commenting out these passes one a time to see which one is
> causing the bug.  When you are testing this way _don't_ use RADEON_DEBUG=noopt

deadcode pass commented out - no change
dataflow optimize pass commented out - shadows are ok
register allocation commented out - corruption everywhere (are you sure this is
disabled with RADEON_DEBUG=noopt?)

So it looks like the bug is caused by dataflow optimize pass.

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