[Bug 91395] OpenGL functions block for serveral ms when used with EGL

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91395

--- Comment #5 from Tapani Pälli <lemody at gmail.com> ---
Is this still an issue? When reading the description my wild guess is that this
is related to 'intel_prepare_render'. Swapbuffers does not trigger new buffer
retrieval but it is done 'lazily' only when buffers are really needed (next
clear/draw as example). In a nutshell there are different points in the driver
that trigger updating the render buffers and this takes some time depending on
the window system and protocol used. If the subsequent frames are very
different in their content this might happen at different points of time.

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