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Re: Cg noise()

Hi !

I tried using the noise() function from Cg a month ago on Linux, and it was always returning 0. After searching on Google for a long time, I finally found out a nVidia document saying this was normal, and to be corrected in future implementations.
Thus, we had to look for a Perlin noise implementation in Cg, and we fought hard to get it right... If you need it, please tell me and I'll send you our code, and the original nVidia code we used.

Fred Leboucher

On Mar 26, 2005, at 2:52 PM, Joshua 'Schwa' Gargus wrote:

Hi,

I'm trying to use the Cg Standard Library noise() function,
but it seems to always return zero.  I don't have access to
a PC right now, so I can't tell if this is a Mac issue.

Here's my test fragment shader:

void main(in float4 inColor : COLOR, out float4 outColor : COLOR)
{
	float3 intensity = abs(noise(2100)) * 10;
	outColor = float4(intensity, 1);
}

Thanks,
Josh
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References: 
 >Cg noise() (From: "Joshua 'Schwa' Gargus" <email@hidden>)



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