For an application that we are developing, I need to be able to render three
different objects into the three color channels separately, then render to the
display. I'm currently using a setup similar to osgdistortion. The question is
how to render into a single channel. My setup looks like:
osg::Texture2D* texture = new osg::Texture2D;
texture->setTextureSize(tex_width, tex_height);
texture->setInternalFormat(GL_RGBA);
texture->setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
texture->setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
If I set the Internal format to GL_RED, GL_GREEN, ... in successive renders,
would the color data be packed? Or, do I need to use a subcopy, or ....?
Thanks,
Mark
Mark A. Bolstad
Scientific Computing
Janelia Farm Research Campus
Howard Hughes Medical Institute
19700 Helix Drive, Ashburn, VA 20147
email: [email protected]
office: +1.571.209.4623
web: http://www.hhmi.org/janelia/
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