On AMD Radeon cards, there are two kinds of working:.OpenGL 4 hardware tessellation on Mac OS X – incorrect rendering TessMark X16 demo runs at around 40FPS (1024×640). On Intel HD Graphics GPUs like the HD 4000 (Macbook Pro, OSX 10.8.3), the tessellation seems to run on hardware, there’s no shader error but there are visual glitches / artifacts.OpenGL 4 hardware tessellation on Mac OS X – correct rendering TessMark X16 demo runs at around 200FPS (1024×640). On NVIDIA GeForce GPUs like the GeForce GT 650M (Macbook Pro, OSX 10.8.3), OpenGL 4 tessellation works fine and works in hardware mode.The code of TessMark is the same on all platforms (Windows, Linux and OS X) and there’s no special tricks to enable tessellation on OS X. The results are based on the feedbacks of TessMark, the tessellation demo of GpuTest 0.4.0. Here is a quick note about the state of OpenGL 4 tessellation on Mac OS X (10.8).
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