[osg-users] Viewport screen resolution not scaling properly in OSX retina

[OpenSceneGraph Users]

Robert is right, windowing toolkits often have their own ways of handling
this. For example, Qt and FLTK (and others) define a pixel ratio that you
can get via their API. I did a google search for "fltk gui retina" which
took me to https://www.fltk.org/doc-1.4/drawing.html . See that link for
getting the screen scale factor, which you then apply anywhere you use
pixel size/coordinates in your program. The resulting code code is
cross-platform, since the pixel scale will be 1.0 for Win/Linux but
something higher on OSX.

Ravi

On Thu, Mar 12, 2020 at 4:24 AM OpenSceneGraph Users <
osg-users at lists.openscenegraph.org> wrote:

> I don't have an MacOS/OSX box or expertise on it but I do know that the
> OSG's built in osgViewer windowing functionality for the Mac does have
> handling for it.  If you are using a 3rd party library like FLTK or GLFW
> then it'll likely bypass this.
>
> Does osgviewer work OK for you?  Have you tried just using the OSG's
> native windowing?
>
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