The pxNoise plug-in is a white noise generator. It deploys the same turbulence as seen in other PixelFX plug-ins.
Similar to pxGradient, it generates its own texture if applied to a container without an image, or blends with the existing texture if the container has an image applied.
Note: This plug-in is located in: Plugins -> Shader -> PixelFX
Adjust the following parameters as required to achieve the required effect:
Size
Amplitude: Intensity/contrast of grains.
Color
Speed: Turbulence noise.
Stretch: Stretches the grain to achieve a rain look of noise.
Stretch Angle
Movement: Transforms the generation of noise.
Transform as Texture
On: Conforms to texture coordinates.
Off: Ignores texture coordinates and behave as stencil mapping.
Apply to: RGB, RGBA, Alpha: Determines the channels in which the noise is generated.