Integrated graphics card

Hello!
I need to launch app on pc with integrated graphics card, that doesn't support glsl version 330. So I compiled osgearth with OSG_GLES3_AVAILABLE (300 ES - max supported version) defined. When I run app (using REX engine), I get following errors (on pic below). And earth is white and no  layers are displayed. Same result in osgearth_viewer.exe

How can I solve this problem?

P.S. Also I've compiled with OSG_GLES2_AVAILABLE. Nothing has changed.

Natasha,
osgEarth on a PC requires OpenGL 3.3 or newer. See if you can download a newer driver.

GLES won't help you - it's for Android/iOS devices.

Ok, thank you