[Bug 76388] upgrade from 10.0.3 to 10.1.0 causes all composited windows (texture from pixmap) to become black

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76388

--- Comment #2 from Carsten Haitzler <raster at rasterman.com> ---
it's not e that handles y invert - it's evas (library e relies on) and it does
handle it - correctly. it was actually our added support of yinvert extension
for egl/gles that caught the bug in #73371. since we started handling it on
egl/gles on intel drivers pixmaps are inverted.

in this case pixmaps are just plain all black - no pixel data at all.
everything blank. a downgrade to 10.0.3 fixes that. in fact it seems to vary
from machine to machine. on some intel gfx systems it is 100% of the time
black. on others its intermittent - depends on boot. reboot and then it works
just fine, until randomly a boot later it's black again. i think sandybridge is
always black, ivybridge is "sometimes black".

nb - this problem we currently see happening with glx+opengl (not egl/gles). i
haven't tried egl/gles as i don't normally need/want it).

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