THREE.FBOHelper

FrameBuffer Object inspector for three.js

Screenshots

Position buffer	Motion blur buffer
Shadow map buffer	Position buffer

Include THREE.FBOHelper.js. There's an ES6 build and an ES5 build transpiled with babel-cli in /build.

Create a helper linked to a WebGLRenderer

var helper = new FBOHelper( renderer );

or use npm to install the package:

npm i three.fbo-helper

and include it in your code (remember to include three.js too)

var THREE = require( 'three' );
var FBOHelper = require( 'three.fbo-helper' );

Call .setSize to adjust to the renderer size (don't forget to do onResize!)
```
helper.setSize( width, height );
```
Attach WebGLRenderTargets at discretion
```
helper.attach( fieldFBO, 'Distance Field' );
helper.attach( particleFBO, 'Particles' );
```
attach() admits a third parameters, formatter, a function that will receive an object with the values of the current point x, y, u, v, r, g, b, and a. You can return a custom string in case you want to show a different caption in the label. Otherwise, it will show all the values. Example:
```
helper.attach( buffer, 'Particles', function( d ) {
return `Position: (${d.x}, ${d.y}, ${d.z}) | Life: ${d.a}`;
} );
```
Update with your animation loop
```
helper.update();
```
If for any reason you resize the FBO, call:
```
helper.refreshFBO( fbo );
`
```
Call .detach to remove any fbo previously attached
```
helper.deatch( fbo );
`
```

Once the helper is working, you can select FBOs to inspect, and drag the viewer around and use the scroll/mousewheel to zoom in and out.

MIT licensed