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Samurai Jack

OpenGL OpenGL Vertex Shader Performanence

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Greetings! I was wondering how fast is vertex shader under OpenGL? Since DirectX 9 and Radeon 9800PRO is it possible to run Skinned Mesh demo, with a 6000 polygon character and one 256x256 texture (tiny.x) with 2200 or 2100 FPS at a glance. I have seen a familiar demo in NVidia SDK, where this "Clown guy" about 8000 polygons is running arround at a frame rate of about 60FPS on GeFroce 6800GT? This is not a ATI vs NVIDIA question neither is it an OpenGL vs DirectX but I am still wondering if it is possible to achieve the same results of speed with OpenGL? I do not want to hear about theoretical possibilities, has anyone ever done it on PC? I mean to measure the speed of a simple skeletal vertex shader with rigid blending with up to 4 weights per vertex? Maybe someone has a benchmark that does right that was I am talking about in OpenGL? Thank you in advance!

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Quote:
I have seen a familiar demo in NVidia SDK, where this "Clown guy" about 8000 polygons is running arround at a frame rate of about 60FPS on GeFroce 6800GT?


My bet: you forgot to disable VSync. It should run more or less at the same speed than DirectX (the hardware is the same, and OpenGL is not less optimized than DX).

Y.

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