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Old 03-27-10, 06:37 AM   #2
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Join Date: Apr 2003
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Default Re: Are Geometry Shaders and Tessellation the same thing?

You can use GS to split up geometry and tessellate objects, but the reason why that never picked up with DX10 was due to that way not being very fast or efficient.
DX11 HW dont just pick it up and run it on the shader units as GS code.

tessellation has been done even earlier then the consoles, the TruForm thing ATi had back on the 8500 did a form of tessellation.
But without the ability to read a heightmap and deform it, IE do displacement mapping, itīs just making things rounder, and thats not always a desired result, unless you can spec and retain hard edges where they should be.
Like the rounded Balloon-like weapons TruForm would give in Counter-Strike.
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