Antialiasing question

[GonMAX]

I wonder if I could know how works the image sampler, how calculates the final pixel from the "sub-samples". It uses a special filter to do it or is a simply box filter aplied to the sub-samples taken?

Its a hard question and I dont know if it´s correct, cause Im from spain and english it´s a little tricky for me.

Thanks for any answer.

[trixian]

My guess is that it filters the samples through any one of the AA filters in the image filtering rollup you might have chosen.

[GonMAX]

Then the "filter size" should be automatically modified to fit the sub-sampling precision.

Another question is if the filtering of sub-samples give a noticeable better quality in final image or not.

[trixian]

I am obviously not qualified to make these assumptions, but I might guess that the sum (result) of the sub samples are filtered through the AA filter and its respective size, and not the sub samples directly.
Hehe, as I said...I might look like a real twit posting these kind of guesses.
I have a sneaky suspicion a certain bulgarian programmer might be more helpfull

[GonMAX]

hehe I think so