114 2004-10-20 05:48:25 +0200 GLCanvas canCreateOffscreenDrawable() function always returns true 2010-03-24 07:54:59 +0100 0 0 3 JogAmp Jogl core 1 All all VERIFIED FIXED P3 normal --- 1 sgothel sgothel DEFECT --- oldest_to_newest 130 0 sgothel 2010-03-24 07:46:59 +0100 ---- Reported by johnpreston 2004-10-20 17:48:25 ---- The GLCanvas.canCreateOffscreenDrawable() function returns true even when pbuffer support is not available as with Mesa Library drivers. On a Linux Fedora Core 2 box runnign Xorg with using the 'ati' driver which uses Mesa libraries, GL vendor=[Mesa project: www.mesa3d.org], GL version=[1.2 (1.5 Mesa 6.1)], GL renderer=[Mesa GLX Indirect], pbuffer support is not available. Yet canCreateOffscreenDrawable() returns true. I need this to return false so I can implement a Java2D workaround for off screen buffering on hardware that does not yet support pbuffers. ---- Additional Comments From kbr 2005-02-23 14:41:06 ---- *** Issue 113 has been marked as a duplicate of this issue. *** ---- Additional Comments From kbr 2005-02-23 14:45:21 ---- The Windows port of JOGL has been fixed to return true for GLCanvas.canCreateOffscreenDrawable() only if the WGL_ARB_pbuffer and WGL_ARB_pixel_format extensions are available. The X11 port already checks to see whether GLX 1.3 or later is available when deciding if pbuffers are supported. As far as I understand it, any GLX implementation claiming to support 1.3 should support pbuffer creation. ---- Additional Comments From kbr 2005-04-30 07:21:53 ---- Although the code in question (on the X11 side) hasn't changed, I'm marking this as fixed because (a) the Windows code has been fixed and (b) I believe the JOGL code is as correct as it can be without adding additional error handling for buggy GLX implementations. The GLJPanel works around the lack of pbuffer support at a higher level by catching GLException during pbuffer creation and falling back to using pixmap rendering. The application here could do something similar. --- Bug imported by sgothel@jausoft.com 2010-03-24 07:46 EDT --- This bug was previously known as _bug_ 114 at https://jogl.dev.java.net/bugs/show_bug.cgi?id=114 Unknown bug field "has_duplicates" encountered while moving bug <has_duplicates> <bug_id>113</bug_id> <who>kbr</who> <when>2005-02-23 14:41:06</when> </has_duplicates> 399 1 sgothel 2010-03-24 07:54:59 +0100 *** Bug 113 has been marked as a duplicate of this bug. ***