[Bug 36193] [i965] brw_eu_emit.c:182: validate_reg: Assertion `execsize >= width' failed.
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Sun Aug 31 02:00:51 PDT 2014
https://bugs.freedesktop.org/show_bug.cgi?id=36193
Kenneth Graunke <kenneth at whitecape.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #13 from Kenneth Graunke <kenneth at whitecape.org> ---
Oh hey, I happened to fix this a while back when looking at a different bug.
commit b7679639bcc8ac72cb08c48f9cda8eecd6a9c1e5
Author: Kenneth Graunke <kenneth at whitecape.org>
Date: Tue Aug 5 23:57:17 2014 -0700
i965/clip: Fix brw_clip_unfilled.c/compute_offset's assembly.
Due to the destination register width of 1 or 2, these instructions get
ExecSize 1 or 2. But dir and offset (used as src0) are both registers
of width 4, violating the execsize >= width assertion.
I honestly don't think this could have ever worked.
Fixes Piglit's polygon-offset and polygon-mode-offset tests on Gen4-5.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70441
Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Chris Forbes <chrisf at ijw.co.nz>
The fix will be in 10.3, and I've nominated it for stable releases as well, so
it may end up in 10.2.x at some point.
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