Bug 127077 – [WebGL] Resizing and entering/exiting full screen draws garbage

• Status: RESOLVED
• Resolution: FIXED
• Component: WebGL

[Brent Fulgham]

Several interactions with WebGL content can display "junk" in the GL view. This is most noticeable when resizing the WebGL view, especially when the view fills the entire WebKit frame.

The underlying problem was that the WebGL context was not being marked as needing display during resize events, causing us to attempt to map an improperly sized texture to composite to the screen.

[Brent Fulgham]

<rdar://problem/10046766>

[Brent Fulgham]

Created attachment 221321 [details]
Patch

[WebKit Commit Bot]

Attachment 221321 [details] did not pass style-queue:

Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/WebCore/ChangeLog', u'Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGL.cpp', u'Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp', '--commit-queue']" exit_code: 1
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGL.cpp:111:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGL.cpp:111:  Wrong number of spaces before statement. (expected: 16)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGL.cpp:131:  Wrong number of spaces before statement. (expected: 8)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:311:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:313:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:311:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:313:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:311:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:313:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:313:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:313:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:328:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
ERROR: Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:328:  Wrong number of spaces before statement. (expected: 12)  [whitespace/indent] [4]
Total errors found: 13 in 3 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Dean Jackson]

Comment on attachment 221321 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=221321&action=review

> Source/WebCore/platform/graphics/opengl/GraphicsContext3DOpenGLCommon.cpp:286
> +    TemporaryOpenGLSetting scopedDither(GL_SCISSOR_TEST, GL_FALSE);

Ooops!

[Brent Fulgham]

Committed r162105: <http://trac.webkit.org/changeset/162105>