On 03 Sep 2014, at 01:18, Saikrishna Arcot <saiarcot...@gmail.com> wrote:
> Hi, > > I was looking at trying to get some libraries and applications to compile in > Ubuntu for armhf (which supports only OpenGL ES for performance reasons). > When I was trying to get OpenSceneGraph to compile, I noticed that in Qt's > src/opengl/qgl.h, GLdouble is aliased to GLfloat. OpenSceneGraph (and some > other applications) expect GLdouble and GLfloat to be different things, and > some applications typedef GLdouble to double in their own code. > > Is there a reason why GLdouble is typedefed to GLfloat? If this was changed > to typedef to double instead, is there a risk of breaking something within Qt? There is nothing in stock ES that supports double precision floats without the use of extensions, so I suspect it was done to make the initial port easier... Anyway, you should use Qt 5 and QOpenGLContext (not QGLWidget / QGLContext) which doesn't have this define and which should be easier to integrate with OpenSceneGraph as you are better control of the GL context. cheers, Gunnar > > -- > Saikrishna Arcot_______________________________________________ > Development mailing list > Development@qt-project.org > http://lists.qt-project.org/mailman/listinfo/development _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
