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[Bug 1086779] Re: EGL/GLES compiz builds do a eglWaitGL (synchronous wait) on every frame, likely to slow things down

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: "Stephen M. Webb" <stephen.webb@xxxxxxxxxxxxx>
Date: Tue, 18 Nov 2014 19:07:20 -0000
Reply-to: Bug 1086779 <1086779@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: compiz/0.9.8
       Status: Triaged => Won't Fix

** Changed in: compiz/0.9.8
    Milestone: 0.9.8.8 => None

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https://bugs.launchpad.net/bugs/1086779

Title:
  EGL/GLES compiz builds do a eglWaitGL (synchronous wait) on every
  frame, likely to slow things down

Status in Compiz:
  Fix Released
Status in Compiz 0.9.8 series:
  Won't Fix
Status in Ubuntu on the Nexus 7:
  Fix Committed
Status in “compiz” package in Ubuntu:
  Fix Released

Bug description:
  I just noticed that compiz' EGL code calls eglWaitGL on every frame
  which appears to be pointless. We don't need and certainly don't want
  to synchronize on every frame. That prevents the CPU and GPU from
  operating in parallel, which could have a significant performance
  impact on some systems.

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