Bij Firingsquad hebben ze een 3D Guide gebouwd met info over termen zoals pixels, texels, voxels, dithering en alpha channels. Over die laagst genoemde techniek heb je hier een stuk info:
2-bit color is a little misleading. At first, it's easy to think of 32-bit color as just having a larger palette of colors that can be displayed, with a maximum of 2^32 colors available. However, 32-bit color has the same number of colors available as 24-bit color! Why is that?This is because the extra 8 bits in 32-bit color are not allocated to displaying RGB color. They are instead used for an "Alpha" value, or an alpha channel. The alpha value that is assigned to a pixel denotes transparency, translucency, or opacity. Thus, a pixel that is given an alpha value can be rendered transparent, opaque, translucent, or something in between. Uses of alpha blending are like showing glass, water and explosions.
Mocht je gevoerd willen worden met meer van dit soort info, dan moet je ff hier gaan kijken.