[Development] Changing GLdouble typedef in src/opengl/qgl.h

Fredrik Höglund fredrik at kde.org
Wed Sep 3 22:20:34 CEST 2014


On Wednesday 03 September 2014, Thiago Macieira wrote:
> On Wednesday 03 September 2014 07:54:14 Saikrishna Arcot wrote:
> > I should have mentioned that these libraries are using Qt 4, and it would be
> > non-trivial to change them to Qt 5 just for compilation purposes.
> > 
> > I wasn't aware that doubles weren't supported on GLES. Based on that, and
> > rereading the forum post here
> > (http://forum.openscenegraph.org/viewtopic.php?t=11504[1]), it seems like
> > there are two standards:
> > 
> > 1. Accept doubles, use double for internal processing (if any), and cast it
> > to float when calling the appropriate GLES function. 2. Accept and use only
> > floats for both internal processing and calling GLES functions.
> > 
> > I wonder which one might be better to follow.
> 
> We can't / won't change QtOpenGL API any more, especially not in Qt 4.
> 
> If you need to, please apply a workaround so your application builds. But from 
> the point of view of the Qt Project, this problem is solved in Qt 5, with 
> QtGui and the new OpenGL classes.

It is not solved in Qt 5. qopengl.h has the same typedef.

Fredrik




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