Bug 73679 - [chromium] Use EXT_discard_framebuffer to optimize buffer clearing
Summary: [chromium] Use EXT_discard_framebuffer to optimize buffer clearing
Status: RESOLVED WONTFIX
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Sami Kyostila
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-12-02 11:29 PST by Sami Kyostila
Modified: 2013-04-12 07:30 PDT (History)
1 user (show)

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Description Sami Kyostila 2011-12-02 11:29:48 PST 
In situations where we know that rendering is fully opaque and covers the entire framebuffer we could use the EXT_discard_framebuffer extension (where available) instead of glClear(). This allows some GPUs to avoid copying the previous framebuffer contents to temporary storage when starting to render.

The extension spec can be found at http://www.khronos.org/registry/gles/extensions/EXT/EXT_discard_framebuffer.txt