2-components color model
- by Cyan
RGB is the natural color model for OpenGL. But a lot of other color models exist.
For example, CMY(K) for printers, YUV for JPEG, the little cousins YCbCr and YCoCg, HSL & HSV from the 70's, and so on.
All these models tend to share a common property : they are based on 3 components.
Therefore my question is :
Does it exist a 2-components color model ?
I'm surprised to not find any. I was expecting something along the line of Hue+light could exist.
I guess it cannot be as "complete" as a true 3-components color model, but a fine-enough approximation will be good for my usecase.
The end objective is to store the 2 components into a single BC5 texture (GL_COMPRESSED_RED_GREEN_RGTC2 in OpenGL). The 3rd component requires a second fetch into a second texture, which hurts performance.
