Fast Noise

Fast Noise [FN] is the classic 2D Fusion noise generator, not the FastNoiseTexture material node. No MediaIn is needed: a procedural field is synthesized internally and the result is an ordinary RGBA image.

Start with the scale semantics. Raising Scale generally creates more frequent and finer structure, while lower values spread smooth variations across more of the frame. Scale is not the image resolution setting; Width and Height are in the Image tab.

In Noise, Center translates the field, Detail adds fine fractal layers, and Brightness/Contrast shape the tonal range before Color mapping. Angle rotates the field, while Lock X/Y keeps a shared scale along both axes.

Seethe changes the internal shape of the field over time rather than moving the finished picture. It may be manually keyframed. Seethe Rate adds automatic evolution per frame; combining both makes motion harder to isolate.

Discontinuous changes smooth noise boundaries to abrupt structures, and Inverted swaps bright and dark regions. These are often unsuitable for gentle smoke but useful for stylized breakup or technical maps.

The Color tab offers Two Color and Gradient. Two Color interpolates between Color 1 and Color 2; each endpoint has independent RGBA. You can produce a partially transparent image at the generator without a mask node.

Gradient uses scalar noise values to index a multistop color ramp. Stop positions, selected-stop RGBA and Offset change palette mapping but not Noise spatial frequency. The capture shows Gradient Type=Uni and RGB interpolation; several alternate buttons look dimmed.

An important screenshot correction: all four original files are authentic but their filenames do not match their displayed tabs. fastnoise-color-two-color.png is Noise, fastnoise-color-gradient.png is Two Color, fastnoise-image.png is Gradient, and fastnoise-noise.png is Image. Captions use visible contents.

The Image tab shows Process Mode, Width, Height, Pixel Aspect, Auto Resolution, Depth and source color/gamma interpretation. These are generator buffer properties, not controls for the artistic strength of fog.

For regular compositing, Fast Noise.Output is an RGBA image and can feed Merge.Foreground or Displace.ForegroundImage. To drive a typed blue Effect Mask input, use Bitmap to convert the desired image channel to a mask.

For atmospheric shots, inspect multiple timeline frames, evaluate the generated alpha in Viewer, then add Blur, color shaping and Merge blending. A good still frame does not certify stable animation.

The supplied PNGs document Noise, Color and Image but not the contents of Settings nor the physical Node Editor. Offline teaching-graph tests cannot certify dimmed options or native Resolve render quality.