https://github.com/hughsk/gl-fbo-matching

Compare two gl-fbo instances' contents for matching pixels.
https://github.com/hughsk/gl-fbo-matching

Last synced: 8 days ago
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Compare two gl-fbo instances' contents for matching pixels.

• Host: GitHub
• URL: https://github.com/hughsk/gl-fbo-matching
• Owner: hughsk
• License: other
• Created: 2014-06-20T13:33:01.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-06-20T13:33:04.000Z (over 10 years ago)
• Last Synced: 2024-10-17T16:41:24.813Z (22 days ago)
• Language: JavaScript
• Size: 105 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
# gl-fbo-matching [![experimental](http://badges.github.io/stability-badges/dist/experimental.svg)](http://github.com/badges/stability-badges)

Compare two [gl-fbo](http://github.com/gl-modules/gl-fbo) instances' contents

for matching pixels. There are certainly smarter ways of doing this but this

is the simplest :)

## Usage

[![NPM](https://nodei.co/npm/gl-fbo-matching.png)](https://nodei.co/npm/gl-fbo-matching/)

### channels = matching(fbo1, fbo2, [threshold])

Returns an array of values: one for each channel (RGBA). A value of 1 means that

all of the pixels in `fbo1` match those in `fbo2`, and a value of 0 means that

none of them do.

Optionally, you can pass in a `threshold` value to limit the comparison's

sensitivity – effectively, setting the maximum distance between two pixels'

values before considering that pixel matching. Defaults to 0.

Note that using this function will result in

`gl.bindFramebuffer(gl.FRAMEBUFFER, null)` being called.

## License

MIT. See [LICENSE.md](http://github.com/hughsk/gl-fbo-matching/blob/master/LICENSE.md) for details.