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authorKenneth Russel <[email protected]>2007-03-21 21:06:28 +0000
committerKenneth Russel <[email protected]>2007-03-21 21:06:28 +0000
commit0871578761657543a5048b290c7957b08b4625d8 (patch)
treec51bda35b11394bb4e77e9405d003905d452c233 /make/glu-x11.cfg
parentdccb92d4c54d5c05ead3b7e39540d626a5a3ee96 (diff)
Fixed Issue 274: GLException when GLJPanel (initially not visible) is made visible/showing
Investigation revealed that the symptom was similar to what happens when one tries to create a new OpenGL context against an invalid HDC on Windows. Discussion with Chris Campbell from the Java 2D team indicated that in situations where the Java 2D OpenGL pipeline is using Frame Buffer Objects for its rendering, it is possible that its internal OpenGL context can be left current to the on-screen drawable, and it only has a valid device context for the brief period of time when its OpenGL context was being made current. This means that by the time JOGL's code got a chance to run, it did not have a valid HDC and therefore could not create its OpenGL context against it. The workaround, suggested by Chris, is to forcibly make the Java 2D context current against its internal "scratch" pbuffer, which can be done with the internal invokeWithOGLSharedContextCurrent method. Added this workaround and verified it fixes the problem with the user's test case. This issue will be fixed in a forthcoming Java SE 6 update release, hopefully 6u2. git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@1176 232f8b59-042b-4e1e-8c03-345bb8c30851
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