Direct3D HLSL Programming using RenderMonkey IDE

Noise Generation
• Use volumetric noise texture
• Sample the texture using
interpolated object position
modified by noise frequency
– Prevents marble from “swimming”
float4 noise (float4 x)
{
return tex3D (noise_volume, x);
}
// Signed noise generation //
float4 snoise (float4 x)
{
return 2.0f * tex3D (noise_volume, x) - 1.0f;
}
Game Developer Conference, San Jose, CA, March 7 th 2003