commit 2832b823b1a25c12a4c5d50eb283216bf8d52b36
author Nigel Tao <nigeltao@golang.org> Wed Sep 23 14:33:25 2015 +1000
committer Nigel Tao <nigeltao@golang.org> Wed Sep 23 04:49:49 2015 +0000
tree fbf77d11874a0f3a02f32376386415910a5c7472
parent b96b24b8ec8f105ead3dc4f3d0b443753bd1b716

shiny/driver/gldriver: add a mutex for groups of OpenGL operations.

Methods like Texture.Upload or Window.Draw are conceptually one
operation but are implemented by multiple OpenGL calls. OpenGL is a
stateful API, so interleaving OpenGL calls from separate higher-level
operations causes inconsistencies.

Change-Id: I66ccf8844d276b82586620c5bfeadb50ba0f5bef
Reviewed-on: https://go-review.googlesource.com/14861
Reviewed-by: David Crawshaw <crawshaw@golang.org>