Re: [osg-users] Advice needed: efficient way to achieve state switching.

Hi Damian, Fragment shader branching is extremely fast nowadays, so I would not worry here to much. If the uniform is set at the top at the view's camera stateset, the branch prediction will do its job here. If you are rendering from the same point of view, you could also simply do a

Re: [osg-users] Advice needed: efficient way to achieve state switching.

Hi Damian, The OSG svn/trunk has a new feature called #pragma(tic) shader composition that allows you to control which shader paths are used by provided the defines to control them from StateSet::setDefine() methods placed in the scene graph. You could write your shaders to use a particular

Re: [osg-users] How to make the change of a dynamic node in another thread

By reading a book of OSG, finally, I kind of solved this problem. In my opinion, it is caused by the usage of DisplayList. OSG uses DisplayList by default, and it takes time for DisplayList to be compiled. If I use VBO or naive OpenGL rendering, problem is solved. I can use

[osg-users] Advice needed: efficient way to achieve state switching.

Hi, I've exhausted what references I could find without really coming up with a good way of doing this, so I am hoping someone can advise me on an efficient method of achieving the following outcome in OSG. I have an arbitrary, large number of nodes scene that I don't control the contents of

Re: [osg-users] Intel graphics poll...

it works, but some features in the Intel driver may not be available. In our case we ran across an issue with the OpenGL extensions GL_EXT_Draw_Instanced and EXT_gpu_shader4 not being available. Don't expect stellar performance either. ;) We are using Ubuntu 12.04 with the latest hardware

Re: [osg-users] Advice needed: efficient way to achieve state switching.

Thanks, exactly what I needed to know. Much appreciated! We're using a third party engine and I'm not sure which version of OSG it's using, but the #pragma shader sounds cool, I'll keep in mind for other work. Cheers, Damian -- Read this topic online here:

Re: [osg-users] Intel graphics poll...

We've been running an OSG/osgEarth based app on Linux/Intel GPU for a while with moderate success. On Wed, Apr 1, 2015 at 3:50 AM, Christian Buchner christian.buch...@gmail.com wrote: it works, but some features in the Intel driver may not be available. In our case we ran across an issue