https://github.com/hughsk/pp-now

Quick setup for single-pass GLSL post-processing with gl-now
https://github.com/hughsk/pp-now

Last synced: 8 days ago
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Quick setup for single-pass GLSL post-processing with gl-now

• Host: GitHub
• URL: https://github.com/hughsk/pp-now
• Owner: hughsk
• License: mit
• Created: 2013-10-12T03:22:24.000Z (about 11 years ago)
• Default Branch: master
• Last Pushed: 2013-10-28T04:42:36.000Z (about 11 years ago)
• Last Synced: 2024-10-17T16:41:27.516Z (22 days ago)
• Language: JavaScript
• Size: 117 KB
• Stars: 2
• Watchers: 5
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
# pp-now [![experimental](http://hughsk.github.io/stability-badges/dist/experimental.svg)](http://github.com/hughsk/stability-badges) #

Quick setup for single-pass GLSL post-processing with

[gl-now](http://github.com/mikolalysenko/gl-now).

## Usage ##

[![pp-now](https://nodei.co/npm/pp-now.png?mini=true)](https://nodei.co/npm/pp-now)

### `require('pp-now')(shell, fragment[, vertex])` ###

Takes the [game-shell](http://github.com/mikolalysenko/game-shell) returned

by `gl-now`, in addition to a `fragment` shader which takes the following

required variables:

* `uniform sampler2D frame;` - the screen as a 2D texture.

* `uniform sampler2D depth;` - the screen's depth buffer as a 2D texture.

* `uniform vec2 frameSize;` - the width/height of the screen in pixels.

* `varying vec2 uv;` - the coordinates on the screen from 0 to 1.

  Alternatively, you can use `gl_FragCoord.xy` for precise pixel coordinates.

### `shell.on('pp-render', frame(t))` ###

Instead of listening to `gl-render`, listen to `pp-render` to draw to the

post-processing framebuffer.

### `shell.on('pp-uniforms', frame(shader))` ###

Passes the [gl-shader](http://github.com/mikolalysenko/gl-shader) being

used for post-processing so that you can update your own additional uniforms

manually.

***

Note that if you're already using framebuffers in your demo it might break -

in which case, you probably won't have much trouble adding post-processing

yourself :)

## License ##

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