OCSNoise PerlinAdvanced

OCSNoise PerlinSimple is the friendly version of Perlin noise for samplers. This is the same idea with every dial exposed - separate lacunarity and resolution per axis, tileable dimensions, depth wrapping, padding, channel-aware 3D slicing, device control. If PerlinSimple is "make me some structured noise," PerlinAdvanced is "make me structured noise with this exact frequency in height, that exact frequency in width, and make the depth tile." It's a lot of surface area, but you can ignore 90% of it and only touch the two or three controls that matter to you.

What it is

An OCS_NOISE generator for ancestral/SDE sampling, like its simpler sibling, but with per-axis frequency control and a pile of 3D-specific options. It outputs OCS_NOISE and plugs into the same places: OCS Substeps custom_noise, or via an OCS Param. The ocs_noise_opt input lets you chain multiple noise generators, and factor/rescale control scaling.

The inputs that matter (for most people)

• octaves, persistence, break_pattern - identical to PerlinSimple, and the three you'll actually tune. break_pattern at 0.9+ unless you want blobs.
• lacunarity_height / lacunarity_width / lacunarity_depth - where Advanced splits things up. Each axis has its own frequency multiplier between octaves (defaults 2). For simple use, just keep them equal.
• res_height / res_width / res_depth - periods of noise per axis. Comma-separated per-octave.
• depth (default 16) - 3D mode. depth_over_channels is the interesting 3D flag: off means each channel gets its own independent 3D noise pattern; on means depth is multiplied by the channel count and each channel is a slice of one shared pattern.
• normalize and device - device (default vs GPU) is worth a glance: GPU generation may be slightly faster but gives different results on different GPUs, so if reproducibility matters, keep the default.

The genuinely niche set - wrap_depth, max_depth, initial_depth, tileable_*, pad_*, initial_amplitude, the per-axis initial_frequency_* - are for 3D/tiling experiments and animation-style workflows. Most people will never touch them.

The gotchas

Same shape constraint as PerlinSimple, but stricter: the README notes the relevant dimension including padding must be a multiple of lacunarity ** (octaves - 1) * res. wrap_depth repeats noise, so the author suggests lowering s_noise in the sampler when depth is low or you'll get banding. And blend is a trap - the tooltip admits that settings other than the LERP default "may not work at all or may not actually generate Perlin noise," and extra blend modes only unlock if you install ComfyUI-bleh.

Installing

With the pack: Manager search "Overly Complicated Sampling", or git clone https://github.com/blepping/comfyui_overly_complicated_sampling into ComfyUI/custom_nodes and restart. No models, no mandatory dependencies. Start from PerlinSimple, confirm you like the effect, then graduate to this one when you hit a wall - that's the intended path and it'll save you an afternoon of knob-flipping.