[osg-users] Running OSG models on OpenGLES2.0

Hyun Kwon hyun.kwon at xilinx.com
Mon Mar 14 11:48:50 PDT 2016


From: osg-users [osg-users-bounces at lists.openscenegraph.org] on behalf of Chris Hanson [xenon at alphapixel.com]
Sent: Monday, March 14, 2016 9:58 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] Running OSG models on OpenGLES2.0

"The fragment language has no default precision qualifier for floating point types.  Hence for float, floating
point vector and matrix variable declarations, either the declaration must include a precision qualifier or
the default float precision must have been previously declared. Similarly, there is no default precision
qualifier for any of the image types,  or any of the following sampler types in any of the languages:"
So basically I always had the luck to have sloppy drivers :-) and one must indeed add the precision qualifiers or define the default precision.

  I think the NVidia drivers play sloppy. Others may be the same way.

Thanks for the input. Now it comes back to my original question. I've added precision qualifiers to compile shaders, but the models from OpenSceneGraph-Data still don't get rendered correctly (similar to the model that I have). I can run all of those fine on desktop with OpenGL. Maybe most of those are not OpenGLES2.0 compatible. I guess there's some incompatibility between pieces.



Chris 'Xenon' Hanson, omo sanza lettere. Xenon at AlphaPixel.com http://www.alphapixel.com/
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