GLSL shading in WebGL
by, 02-19-2014 at 04:35 AM (89568 Views)
My first attempt at WebGL using Three.js libraries. Check it: http://www.vill.ee/eye
Eye shader main features:
- Texture raytracing to simulate cornea refractions
- Loads of parameters to customize the eye
- Cornea vertex displacement
- Normal maps
- Simple image based 'lighting'
There is still some room for optimization in fragment shader. I feel like, I'm doing too many space transformations at the end. Also, I couldn't figure out how to access gl_ModelViewMatrixInverse in vertex shader so modelViewMatrix gets inverted in the vertex shader. Recalculating normals of displaced vertices is also questionable. I'm planning to add cat eye shape and caustics.
Environments from hdrlabs.com and zbyg.deviantart.com
Eye textures from milesresearch.com and Lukas Hajka
Images processed with Photoshop and Crazybump