[Mesa-dev] [Bug 91596] EGL_KHR_gl_colorspace (v2) causes problem with Android-x86 GUI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91596

            Bug ID: 91596
           Summary: EGL_KHR_gl_colorspace (v2) causes problem with
                    Android-x86 GUI
           Product: Mesa
           Version: git
          Hardware: All
                OS: other
            Status: NEW
          Severity: critical
          Priority: medium
         Component: EGL
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: issor.oruam at gmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 117607
  --> https://bugs.freedesktop.org/attachment.cgi?id=117607&action=edit
logcat, NOTE: SEGFAULTS are unrelated to GUI flashes and independent

Hi,

while testing mesa 10.7.0devel/11.0.0 with android-x86 ISO builds,
I've encountered a problem, which is affecting Android-x86 GUI on both
kitkat-x86 and lollipop-x86 and on different HW (Radeon, Nvidia, Intel).

The artifacts visible are:

- GUI/Backgroung elements flashing, with B/W very rapid changes (100-200 ms
cycles)

- Old frame buffers polluting the composed GUI/screens, visible using the mouse
wheel

Symptoms indicate that somehow the handles to the EGL buffers or their DRI
equivalents may have problems.

After some checks on git on what could cause HW independend problems,
I've found the first commit that generates the problem:

commit c2c2e9ab604793c6e01f85497f3f5bf645f962fa

    egl: implement EGL_KHR_gl_colorspace (v2)

    v2: add missing "break"

NOTE: since Android-x86 require at least two patches to have working Intel and
Nouveau gallium_dri, main git bisecting operations was done with Radeonsi
driver on lollipop-x86, where I could build the untouched mesa 11.0.0 git. 

Mauro

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