Hi,
On 13/07/11 17:04, Bolstad, Mark wrote:
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 ....?
you will need to combine them manually, GL_RED is like GL_LUMINANCE so
you'll get only one output value per pixel packed. I think easiest would
be to render to 3 luminance textures and then combine in another step
into rgb.
rgds
jp
Thanks,
Mark
*/Mark A. Bolstad/*
Scientific Computing
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