ImgEdit

Simple GPU accelerated image editor (Work In Progress)

• Implemented using JavaScript ES6+ & WebGL 1.0
• Enables per-layer image (composition) adjustments and layer blending
• schillerpatrik.com/imgedit

Layers

• each layer can be separately adjusted
• layer blending modes: screen, normal, multiply

Image adjustments

• contrast
• brightness
• gamma correction
• hue + saturation
• Gaussian blur (single pass 2D convolution)

ToDo

• Image scaling (currently the scale (aspect ratio) is derived from the last image/layer loaded)
• Variable layers order (layers can be re-ordered by drag&drop in the layers panel)
• Better Gaussian blur methods - separable 2-pass & single pass aproximate GB
• Add new and more complex tools

Known Bugs

• On older Android devices, alpha gradient for complete black doesn't work
  • [0,0,0, 0.0] --> [0,0,0, 1.0] represented by data/masks/gradient_fullblack.png doesn't work
  • Fix: add some color to one of the channels, e.g. 1/255 to red channel, represented by data/masks/gradient_r1.png