Created attachment 92800 [details]
dFdx_frag.test output

System Environment:
--------------------------
Platform: Pineview/Ironlake/Sandybridge/Ivybridge/Haswell/Baytrail
Libdrm:		(master)libdrm-2.4.52
Mesa:		(master)00c672086c31f94dd96609fa976300781f53792e
Xserver:	(master)xorg-server-1.15.0-558-gc1ce807d9f18f215332d7eeb844e8c640f71c53c
Xf86_video_intel:(master)2.99.907-52-gc9e9c85fc7b21e231c2532fe1c75b92307e112ed
Cairo:		(master)2a7f133639bed86a29dd9693cb78c0aa42eaff30
Libva:		(staging)79ddde6bab54618046f136471c020c08ff4fde50
Libva_intel_driver:(staging)6736a39fce442a8e5abb2a2e99adf56e3965d35f
Kernel:	(drm-intel-nightly) 164a4cb4c1431a0689f85507868356fae24da638

Bug detailed description:
-----------------------------
Many Ogles2conform cases fail on all platforms with mesa master branch. It doesn't happen on mesa 10.0 branch.

Bisect shows: b2d1c579bb84a88179072a6a783f8827e218db55 is the first bad commit
commit b2d1c579bb84a88179072a6a783f8827e218db55
Author:     Matt Turner <mattst88@gmail.com>
AuthorDate: Fri Jan 17 14:22:49 2014 -0800
Commit:     Matt Turner <mattst88@gmail.com>
CommitDate: Thu Jan 23 11:33:22 2014 -0800

    glcpp: Set extension defines after resolving the GLSL version.

    Instead of defining preprocessor macros in glcpp_parser_create based on
    the GL API, wait until the shader version has been resolved. Doing this
    allows us to correctly set (and not set) preprocessor macros for
    extensions allowed by the API but not the shader, as in the case of
    ARB_ES3_compatibility.

    The shader version has been resolved when the preprocessor encounters
    the first preprocessor token, since the GLSL spec says

       "The #version directive must occur in a shader before anything else,
        except for comments and white space."

    Specifically, if a #version token is found the version is known
    explicitly, and if any other preprocessor token is found then the GLSL
    version is implicitly 1.10.

    Cc: mesa-stable@lists.freedesktop.org
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=71630
    Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

run GL2ExtensionTests/dFdx/dFdx_frag.test

Reproduce steps:
----------------------------
1. xinit
2../GTF -width=64 -height=64 -run=GL2ExtensionTests/dFdx/dFdx_frag.test