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Since most of our discussions are about RGBA, I'm curious, are graphics algorithms applicable to YUV encoding or other ways of encoding color? Or do we typically convert these other encodings to RGBA to apply these algorithms and then convert back?


Does the alpha value of a pixel allow more colors to be displayed under it? (like say, photoshop and layers)?


Is it a good idea to remove the primitive from our rasterization process if its alpha value is 0?


is the transparency value's difference only applying on multiplying RGB values? If this is how I understand it, will this only be a problem when I am rendering two overlapping triangles? (or will that still be ok)