I'm trying to understand what multisampling breaks down into. What exactly is a single sample?
Supersampling basically renders the image at a greater resolution, then shrinks the image down to the selected resolution.
From what I've read, multisampling doesn't appear to work like that.
Basically, from what I've been able to determine, a single AA sample is the average color of a 1-pixel block consisting of 4 sub-pixels (a 2-by-2 block). The act of downfiltering determines the average and returns the actual color that will be applied to the 1-pixel block.
Now, take a look at nVidia's multisampling here: http://www.hothardware.com/image\_popup.cfm...ticleid=707&t=a
4x AA is the building block for all the other AA modes, which is actually composed of 4 individual AA samples.
Mathematically speaking, this doesn't make much sense to have 4 1-pixel blocks crammed into a single pixel. Something doesn't jive here. :huh:
What pieces of information am I missing, and/or what have I interpreted incorrectly? I'm throughly confused.
Also, what exactly is a "texture sample"?