Read out the contents of a floating-point gl-texture2d
npm install gl-texture2d-read-float
Read out the contents of a floating-point
gl-texture2d.
This will eventually be supported natively in WebGL
(it's listed in the OpenGL ES 3 spec),
but this fills that need until then!

Reads out the contents of glTex2d, which should be an instance ofgl-texture2d. When complete, done(err, data) will be called where data is
a Float32Array containing the resulting floats in the texture.
`` javascript
const canvas = document.createElement('canvas')
const gl = require('gl-context')(canvas)
const read = require('gl-texture2d-read-float')
const Texture2d = require('gl-texture2d')
const baboon = require('baboon-image')
const assert = require('assert')
const texture = baboon(gl, baboon)
read(texture, function(err, data) {
if (err) throw err
assert.deepEqual(data, baboon.data)
})
`
A few things to note:
* Right now, this is slow as it requires reading data back from the GPU.
There's not much that can be done about this for the time being unfortunately.
* The data is retrieved synchronously under the hood, but the API has been made
asynchronous in preparation for WebGL's eventual async readPixels equivalent.gl.RGBA
* Only /gl.FLOAT` textures are currently supported. Pull requests are,
however, very welcome! :)
See stackgl/contributing for details.
MIT. See LICENSE.md for details.