[vtk-developers] glext.h and glxext.h on OSX

Mon Apr 20 21:15:01 EDT 2009

PS, This OpenGL viewer may be useful to detect system capabilities:
http://www.realtech-vr.com/glview/download.html

On Mon, Apr 20, 2009 at 5:39 PM, Darren Weber
<darren.weber.lists at gmail.com>wrote:

>
> Hi Francois,
>
> I'm asking for both general recommendation and because some of the
> VTK-5-4-0 tests failed on my OSX system (see our prior email discussion
> about that for the ctest details posted to the experimental board from host
> elegans.buckcenter.org).
>
> FYI:
>
> From macports mesa (7.4) installation of /opt/local/include/GL/glxext.h
>
> /* Header file version number, required by OpenGL ABI for Linux */
> /* glxext.h last updated 2008/10/22 */
> /* Current version at http://www.opengl.org/registry/ */
> #define GLX_GLXEXT_VERSION 21
>
>
> From installation of XQuartz 2.3.1 (xorg-server 1.4.2-apple17) into
> /usr/X11/include/GL/glxext.h
>
> /* Header file version number, required by OpenGL ABI for Linux */
> /* glxext.h last updated 2007/04/21 */
> /* Current version at http://www.opengl.org/registry/ */
> #define GLX_GLXEXT_VERSION 19
>
>
> From apple installation of
> /Developer/SDKs/MacOSX10.5.sdk/usr/X11/include/GL/glxext.h
>
> /* Header file version number, required by OpenGL ABI for Linux */
> /* glxext.h last updated 2007/04/21 */
> /* Current version at http://www.opengl.org/registry/ */
> #define GLX_GLXEXT_VERSION 19
>
>
> There is no glxext.h under /System/Library/Frameworks/OpenGL.framework
> From /System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/glext.h
>
> /*
> ** License Applicability. Except to the extent portions of this file are
> ** made subject to an alternative license as permitted in the SGI Free
> ** Software License B, Version 1.1 (the "License"), the contents of this
> ** file are subject only to the provisions of the License. You may not use
> ** this file except in compliance with the License. You may obtain a copy
> ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
> ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
> **
> ** http://oss.sgi.com/projects/FreeB
> **
> ** Note that, as provided in the License, the Software is distributed on an
> ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
> ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
> ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
> ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
> **
> ** Original Code. The Original Code is: OpenGL Sample Implementation,
> ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
> ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
> ** Copyright in any portions created by third parties is as indicated
> ** elsewhere herein. All Rights Reserved.
> **
> ** Additional Notice Provisions: This software was created using the
> ** OpenGL(R) version 1.2.1 Sample Implementation published by SGI, but has
> ** not been independently verified as being compliant with the OpenGL(R)
> ** version 1.2.1 Specification.
> */
>
>
> Given the above, should I be more specific about how to specify these build
> library paths?
>
> Also, once a specific library dependency is selected, how can I determine
> if the library can support off-screen rendering, in order to set the cmake
> variable VTK_OPENGL_HAS_OSMESA (or should I leave that entirely up to
> cmake)?
>
> Thanks again,
> Darren
>
>
>
>
>
>
>
> On Mon, Apr 20, 2009 at 5:13 PM, Francois Bertel <
> francois.bertel at kitware.com> wrote:
>
>> Hi,
>>
>> We try to keep glxext.h in VTK up-to-date with the official file from
>> opengl.org ( http://www.opengl.org/registry/api/glxext.h )
>>
>> Are you asking this question because you encounter some error or just
>> for a general recommendation?
>>
>> In the first part of the file, there is something like:
>>
>> /* glxext.h last updated 2008/10/22 */
>> /* Current version at http://www.opengl.org/registry/ */
>> #define GLX_GLXEXT_VERSION 21
>>
>> you can compare this part with the different versions of glxext.h
>> provided by your machine and by VTK.
>>
>> Right now, the version does not matter too much but I recommend to
>> point to the one provided with VTK.
>>
>>
>> On Mon, Apr 20, 2009 at 7:28 PM, Darren Weber
>> <darren.weber.lists at gmail.com> wrote:
>> > Please advise on which headers to use when building VTK-5.4.0 on OSX for
>> > glext.h and glxext.h
>> >
>> > The default cmake settings are:
>> > VTK_GLEXT_FILE:FILEPATH=<srcPath>/Utilities/ParseOGLExt/headers/glext.h
>> >
>> VTK_GLXEXT_FILE:FILEPATH=<srcPath>/Utilities/ParseOGLExt/headers/glxext.h
>> >
>> > The following are possible alternatives for glext.h (similarly for
>> glxext.h)
>> > on an OSX system (10.5.6, with Xcode 3.x, XQuartz, and macports with
>> mesa):
>> >
>> > Apple installations:
>> >
>> /Developer/SDKs/MacOSX10.4u.sdk/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/glext.h
>> > /Developer/SDKs/MacOSX10.4u.sdk/usr/X11R6/include/GL/glext.h
>> >
>> /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/glext.h
>> > /Developer/SDKs/MacOSX10.5.sdk/usr/X11/include/GL/glext.h
>> > /System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/glext.h
>> >
>> > macports installation of mesa:
>> > /opt/local/include/GL/glext.h
>> >
>> > XQuartz installation:
>> > /usr/X11/include/GL/glext.h
>> >
>> > Thanks in advance,
>> > Darren
>> >
>> >
>> > _______________________________________________
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>> >
>> >
>>
>>
>>
>> --
>> François Bertel, PhD  | Kitware Inc. Suite 204
>> 1 (518) 371 3971 x113 | 28 Corporate Drive
>>                      | Clifton Park NY 12065, USA
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