On the machine that I've been using _glMaxTextureCoords is 1 and _glMaxTextureUnits is 4! Using _glMaxTextureCoords in the test therefore prevents me using the other texture units.
Ahh! On this machine calling: glGetIntegerv(GL_MAX_TEXTURE_COORDS,&_glMaxTextureCoords); gives an error in initializeExtensionProcs() (GL_INVALID_ENUM = pname was not an accepted value). As the value of _glMaxTextureCoords is initialised to 1 then this value remains. The driver on this machine supports OpenGL v1.5 100% but not 2.0. Would I be right in thinking that GL_MAX_TEXTURE_COORDS is in OpenGL2.0 and not necessarily in earlier versions? If this is the case, as it seems, what's the solution? The answer isn't update the drivers on my machine! Joseph -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Farshid Lashkari Sent: 19 November 2007 17:07 To: OpenSceneGraph Submissions Subject: Re: [osg-submissions] State.cpp Hi Joseph, The documentation for glClientActiveTexture says the index can range from 0 to GL_MAX_TEXTURE_COORDS - 1, so I believe the current behavior is correct. Here is the link to the documentation for this command on the OpenGL site: http://www.opengl.org/sdk/docs/man/xhtml/glClientActiveTexture.xml -Farshid On Nov 19, 2007 3:20 AM, Joseph Steel <[EMAIL PROTECTED]> wrote: > > > > > In osg Ver2.2 public release osg::State::setClientActiveTextureUnit > (State.cpp, line759) the test (I think) should be: > > if (_glClientActiveTexture && unit < (unsigned int)_glMaxTextureUnits) > > and not _glMaxTextureCoords. > > I've attached a modified version of the file (osg\State.cpp) > > Joseph Steel > _______________________________________________ > osg-submissions mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-submissions-openscenegraph. org > > _______________________________________________ osg-submissions mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-submissions-openscenegraph. org _______________________________________________ osg-submissions mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-submissions-openscenegraph.org
