OFColorMatrix

This code is a port of http://www.quasimondo.com/colormatrix/ColorMatrix.as.
This is only tested on windows 10.
In order to use this code, you need a fragment shader code where it'S located at "./bin/data/shader/" directory.

original image:

invert:

saturation:

contrast:

brightness:

grayscale:

hue:

Example Code

Here is a one of the example applying color matrix effect to an image.

void ofApp::setup(){
    :
    colorMat.adjustBrightness(100, 100, 100);
    :
}

void ofApp::draw(){
    :
    colorMat.apply(shader);
    :
}