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hitman200ca

OpenGL GLSL Noise Performance

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Hello, Has anyone experimented with any of the noise family of functions in GLSL? I am finding that they are not implemented or poorly implemented. This document by Mark Kilgard notes that noise on NVidia cards returns 0 always. http://download.nvidia.com/developer/Papers/2005/OpenGL_2.0/NVIDIA_OpenGL_2.0_Support.pdf I have tried it on a Radeon 9600 and a Radeon X850 Pro with the same failure. The frame rate drop below interactive levels (less than one frame per second!). If someone has used these functions sucessfully please let me know what your setup is. Thanks.

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I vaguely remember somebody posting a fast (or faster anyway) glsl noise implementation on opengl.org. The forum search should find it.

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Guest Anonymous Poster
I remember reading somewhere that noise() is
currently only supported on 3dlabs
hardware

(slap me if i'm wrong :)

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Thanks very much everyone.

I did search the forum with no luck but the google idea worked like a charm. I have an email into ATI regarding the issue so I will post their reply (if I get one).


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