Our app makes use of glCopyPixels to copy the back buffer to aux buffer
0.
We do this so we can use this buffer to erase temporary drawing when
doing UI goodness, like rubber band selections etc.
From 10.3.6 onward, this has broken and no longer works.
Running OpenGL Profiler and breaking on glCopyPixels and looking at aux
buffer 0, I see that no pixels are copied.
Also, no pixels are copied when copying from aux0 to the back buffer.
From 10.3.5 and lower versions, this works fine.
Is there any workaround?
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