https://github.com/melmass/cops-cl

OpenCL shaders for Coppernicus
https://github.com/melmass/cops-cl

cops houdini opencl

Last synced: 7 months ago
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OpenCL shaders for Coppernicus

Host: GitHub
URL: https://github.com/melmass/cops-cl
Owner: melMass
Created: 2024-07-22T15:53:06.000Z (about 1 year ago)
Default Branch: main
Last Pushed: 2025-02-03T21:38:20.000Z (8 months ago)
Last Synced: 2025-03-09T12:30:09.575Z (7 months ago)
Topics: cops, houdini, opencl
Language: C
Homepage:
Size: 22.5 KB
Stars: 11
Watchers: 2
Forks: 1
Open Issues: 0
Metadata Files:
- Readme: README.md

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README

# COP OpenCL

Experimenting with copernicus, the long-awaited GPU texture/shader context of Houdini.
The main purpose of this repo is to show various approaches for learning purposes.

Do not hesitate to reach or PR nodes that others could learn from.

## Nodes

### Weave

This is an almost 1/1 copy of the OSL version for 3DSMax by Zap Anderson ([osl source code](https://github.com/ADN-DevTech/3dsMax-OSL-Shaders/blob/master/3ds%20Max%20Shipping%20Shaders/Weave.osl)),
it outputs color, bump, ID and opacity

### Split Gaussian Blur

This is very slow for now compared to the built-in gaussian blur.
The main idea is to use a `float4` as `sigma`, allowing to blur each channels (supports RGBA) independently.
For convenience, it also has a global `float` sigma multiplier.

### Glow

Naive glow, like the edge detection this should yield better results if done in multiple kernels (for instance extract highlights, blur,pasteback).
Keeping it for reference too.