[Webkit-unassigned] [Bug 76239] DrawingBuffer is not cleared correctly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=76239





--- Comment #16 from yongsheng <yongsheng.zhu at intel.com>  2012-01-19 17:51:52 PST ---

> I see what is happening -- we are hitting the s_maximumResourceUsePixels limit in the DrawingBuffer code when running almost any other test in the same renderer process as drawingbuffer-test.html. When just running the layout tests, it's sufficient to run just fast/canvas/webgl/canvas-test.html and fast/canvas/webgl/drawingbuffer-test.html in the same invocation of run-webkit-tests to provoke the failure.

Yes, you got it :). That's the root cause. This fix extremely exposes the bug #76225 & #76562. I'm fixing it. Will propose a patch. 

> While fixing Bug 76562 will mask this problem, there is a deeper issue; the WebGL context must retry the allocation of the back buffer at a smaller size if it fails. There is really no provision in the spec for the context's back buffer shrinking to 0x0 in response to resizing of the canvas. I've filed https://bugs.webkit.org/show_bug.cgi?id=76654 to track this issue.

Reasonable. thanks for exposing this issue.

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.