Three.js-GpuProcessor

#Three.js GPU Processor

A GPGPU class for Three.js. Create shader passes that can optionally read back 32 bit float values from the GPU. View index.html for usage. Contributions and comments welcomed. This is my first pass at this code.

##Usage

var gpuProcessor = new THREE.GpuProcessor(3); //Creates a texture of size 2^3 * 2^3 = 64 pixels

//Add a pass that reads the results into a Float32Array
var pass1 = gpuProcessor.addPass(shaderMaterial);

//Add a pass that just processes
var pass2 = gpuProcessor.addPass(shaderMaterial2, {
	readPixels : false,
	rtDataType: THREE.FloatType
}

gpuProcessor.renderPasses();

//Results of the first pass
gpuProcessor.floatArray[pass1];

//Second pass is null
gpuProcessor.floatArray[pass2];

//But you can access the render target
gpuProcessor.renderTargets[pass2]

In your fragment shader just set the gl_FragColor = encode_float(valueToReturn)

##Working example

Open up index.html and your JavaScript console for a trivial working example.