[Bug 94181] [regression] piglit.spec.ext_framebuffer_object.getteximage-formats init-by-clear-and-render

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94181

            Bug ID: 94181
           Summary: [regression]
                    piglit.spec.ext_framebuffer_object.getteximage-formats
                    init-by-clear-and-render
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: mark.a.janes at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

This test began failing with the following output:

/tmp/build_root/m64/lib/piglit/bin/getteximage-formats init-by-clear-and-render
-auto -fbo
Using test set: Core formats
The textures will be initialized by rendering to them using glCear and
glDrawPixels.
getteximage-formats failure: format: 3, level 1 at pixel(369, 103)
 Expected (0.992157, 0.992157, 0.501961, 1.000000)
     Found (0.000000, 0.000000, 0.000000, 1.000000)
Tolerance (0.031250, 0.031250, 0.031250, 0.250000)
{many other pixel comparisons follow}

bisected commit:
36b7c0dad90e5b24c33d9e3a803bc3a02f49d84b
Author:     Topi Pohjolainen <topi.pohjolainen at intel.com>
Revert "i965: Restore vbo after color resolve during brw_try_draw_prims()"

This got pushed accidentally in the first place but wasn't reverted
as it didn't regress piglit but instead fixed one newly introduced
test exercising a corner in case in i965 driver. However, saving and
restoring vertex buffer context is complicated and requires more
thought.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94150

Signed-off-by: Topi Pohjolainen <topi.pohjolainen at intel.com>
Reviewed-by: Tapani Palli <tapani.palli at intel.com>

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