[cairo] PATCH: GL: Create glyph mask surface only once per context, enlarge on demand

[Chris Wilson]

On Fri, Feb 15, 2013 at 01:38:43PM +0000, Mikko Strandborg wrote:
> Hello,
> 
> In text rendering, when the rendering happens via a mask, the GL surface
> allocates and releases a temporary mask surface for each text rendering
> operation. This is very slow. The attached patch stores the mask surface to GL
> context. It is created lazily on first rendering, and enlarged on demand. This
> makes text rendering some 250% faster in some cases.

By working around bugs in the drivers...
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre