[osg-users] Layered rendering with a geometry shader

[Chris Djali]

Thanks Voerman. I'd looked through the examples for other things, but not for multiple viewports, so missed that. It seems to be a good starting point once I switched the GLSL extension from the NV variant to the ARB one. Despite not being core until OpenGL 4.1, it looks like multiple viewports are available on nearly all hardware supporting geometry shaders, so I don't think I'm even going to have to worry about not supporting as much hardware as I wanted to.

Regarding more conventional batching, we have to deal with stupid assets, such as crates implemented as six individual faces each with their own texture. We don't have the rights to fix and redistribute these assets, so any possible solution is going to need stuff like texture atlassing on load. We've got a high-level outline for something that should work, but there are a lot of moving parts to meddle with, so it's beign put off for now.

Cheers,
Chris

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