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Question by fmfranck · Sep 29, 2016 at 09:32 PM · geometry shader

GLSL geometry shader / tessellation shader example code

Using Unity 3D version 5.4 : how to write a GLSL geometry / tessellation shader ? It is supposed to be possible using this version of Unity 3D. However, I cannot isolate a correct syntax for this type of shader (#ifdef ... #endif) ? An example would be much appreciated.

Thanks for your help

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Answer by HonoraryBob · Dec 27, 2016 at 10:02 PM

@fmfranck I'm looking for the same thing... as usual, documentation seems to be minimal.

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Answer by Socapex · Dec 28, 2016 at 06:52 PM

Not the best answer, but this book has good resources and will take you to a decent level in shader coding https://www.packtpub.com/game-development/unity-5x-shaders-and-effects-cookbook.

It has a volumetric explosion shader that you can start from.

Note that Unity shaders aren't written in GLSL, so I highly recommend the book so you get up to speed. The shading language is based off CG, which HLSL is also based off-of. Searching for that will help you.

Other good free resources: http://http.developer.nvidia.com/CgTutorial/cg_tutorial_chapter01.html https://developer.nvidia.com/gpugems/GPUGems/gpugems_pref01.html

Hope this helps a little.

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