[Bug 94626] Broadwell: OpenGL 3.1+ corruption

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Mar 19 15:32:50 UTC 2016


            Bug ID: 94626
           Summary: Broadwell: OpenGL 3.1+ corruption
           Product: Mesa
           Version: 11.2
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: florian at uekermann.me
        QA Contact: intel-3d-bugs at lists.freedesktop.org

My Acer C740 renders severly corrupted frames in a deferred renderer (render to
texture and then from texture to screen). It looks like the red component is
increased for about half of the pixels. This happens only on OpenGL 3.1+
contexts and ES 3.1 contexts, both in 11.1 and 11.2-rc3.
glxgears stays black under the same conditions, when setting the OpenGL version
via environment variable.
I can provide test cases if someone gives me some pointers what you want to see
(screenshots, texture dumps, hello triangle, render to/from texture). I don't
really have an idea what kind of feature is likely to be the culprit.

Both test program work fine on (ES) 3.0.

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