[Webkit-unassigned] [Bug 94300] [GTK] three.js example webgl_terrain_dynamic.html doesn't work

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Sep 11 15:18:05 PDT 2012


https://bugs.webkit.org/show_bug.cgi?id=94300





--- Comment #6 from arno. <arno at renevier.net>  2012-09-11 15:18:29 PST ---
Created an attachment (id=163454)
 --> (https://bugs.webkit.org/attachment.cgi?id=163454&action=review)
testcase

Hi,

here is a testcase.

when I put it in LayoutTests/fast/canvas/webgl, and display it with
Tools/Scripts/run-launcher --gtk file:///home/arno/webkit/WebKit.upstream/LayoutTests/fast/canvas/webgl/webgl-doubleframebuffer.html --enable-webgl

I can check that it fails on trunk but suceeds with your patch.

Unfortunately, when I try to run it with ./Tools/Scripts/run-webkit-tests --gtk --force fast/canvas/webgl/webgl-doubleframebuffer.html it fails, so can you check this test it on your systems ?



---
About the test failure, there is the following error

CONSOLE MESSAGE: line 24: *** Error loading shader '[object WebGLShader]':INVALID_OPERATION
CONSOLE MESSAGE: line 24: *** Error compiling shader '[object WebGLShader]':
CONSOLE MESSAGE: line 239: TypeError: 'null' is not an object (evaluating 'gl.createBuffer')
 FAIL successfullyParsed should be true (of type boolean). Was undefined (of type undefined).



actually, gl.getError() is already INVALID_OPERATION just after gl.getContext()
This is true also in other webgl tests, but it does not trigger an exception (because the first gl.getError() test appear at other moments). My guess is, it could be a bug of my driver (ati catalyst) with Xvfb.

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