Hi,
I think u must use shader to achieve it.
u can bind regular color buffer,but using gl_FragColor.rgb = normal.xyz in
fragment shader.
the fallback is that you need to render the Node twice.
OSG support this way.
If you're familiar with OpenGL4.x,you can use GL_COLOR_ATTACHMENT_i Frame
Buffer attachment,then use Multi-Render target to do this.
layout(location =1) out vec4 normal;
{
normal = Computednormal;
}
But I'm not sure whether OSG support this feather.
Thank you!
Cheers,
Yu
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=76896#76896
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