Bug 27388 - [i965] piglit glsl-vs-arrays failure
Summary: [i965] piglit glsl-vs-arrays failure
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Eric Anholt
QA Contact:
Depends on:
Blocks: 29044
  Show dependency treegraph
Reported: 2010-03-31 02:18 UTC by Gordon Jin
Modified: 2010-07-30 21:36 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Note You need to log in before you can comment on or make changes to this bug.
Description Gordon Jin 2010-03-31 02:18:30 UTC
piglit shader/glsl-vs-arrays fails with below output:

Probe at (15,15)
  Expected: 0.000000 1.000000 0.000000
  Observed: 0.000000 0.098039 0.000000
PIGLIT: {'result': 'fail' }

It may be not regression, at least not recent regression.

It passes with software rendering.

It passes (with i965) if I change glsl-vs-arrays.vert as below:
-    temp[index2] = temp[index1];
+    temp[2] = temp[3];

So it indicates the assumption of "index1=3, index2=2" are broken and the uniform vars are not passed through.  
Comment 1 Gordon Jin 2010-03-31 19:30:43 UTC
piglit shader/glsl-vs-mov-after-deref fails with the same problem:

Probe at (15,15)
  Expected: 0.000000 1.000000 0.000000
  Observed: 1.000000 1.000000 1.000000
PIGLIT: {'result': 'fail' }
Comment 2 Eric Anholt 2010-04-12 13:11:59 UTC
The test was created to show this failure.  It's not the uniforms that are the problem, but array access.
Comment 3 Eric Anholt 2010-07-21 22:21:20 UTC
glsl-vs-mov-after-deref failed with half of the problems that glsl-vs-arrays has, and is now fixed.

commit c686ee0fa7e2298408259f5533b739c7d05c78b8
Author: Eric Anholt <eric@anholt.net>
Date:   Wed Jul 21 21:45:34 2010 -0700

    i965: In the VS, multiply the address reg by the appropriate register size.
Comment 4 Eric Anholt 2010-07-23 14:05:24 UTC
commit 35bbbf47425244188334a89163191d9f00bdeced
Author: Eric Anholt <eric@anholt.net>
Date:   Fri Jul 23 10:34:29 2010 -0700

    i965: Add support for VS relative addressing of temporary arrays.
    Fixes glsl-vs-arrays.  Bug #27388.
Comment 5 zhao jian 2010-07-30 21:36:18 UTC
It passed now. so verified.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.