Thanks, I guess I missed that. I assumed that if noise wasn't
supported by a particular profile, an error would be raised when
trying to compile the program.
Josh
On Sat, Mar 26, 2005 at 08:39:47AM -0800, Geoff Stahl wrote:
> NVIDIA release notes for GLSL says something to the effect that noise
> always returns a constant, not sure it this is at all true for Cg but
> most (if not all) hardware currently little to no noise support. You
> maybe able to search the web for Cg noise support and get some info.
> Most shaders I see currently use a 3D noise texture for noise support
> on hardware that does not provide a noise function.
>
> Geoff Stahl
> 3D Software Engineer
> Apple
>
> On Mar 26, 2005, at 5:52 AM, 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);
> >}
> >
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