https://github.com/dy/flip-pixels

Flip pixel data after readPixels
https://github.com/dy/flip-pixels

Last synced: 9 months ago
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Flip pixel data after readPixels

• Host: GitHub
• URL: https://github.com/dy/flip-pixels
• Owner: dy
• Created: 2018-09-24T11:22:38.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2018-10-23T11:49:03.000Z (over 7 years ago)
• Last Synced: 2025-08-27T20:39:54.369Z (10 months ago)
• Language: JavaScript
• Size: 2.93 KB
• Stars: 4
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md

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README

          
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Flip pixels after `gl.readTexture`:

```js

var flip = require('flip-pixels')

var w = gl.drawingBufferWidth;

var h = gl.drawingBufferHeight

var pixels = new Uint8Array(w * h * 4);

gl.readPixels(0, 0, w, h, gl.RGBA, gl.UNSIGNED_BYTE, pixels);

flip(pixels, w, h)

```

Based on [this question](https://stackoverflow.com/questions/41969562/how-can-i-flip-the-result-of-webglrenderingcontext-readpixels).

See also [clip-pixels](https://ghub.io/clip-pixels).