Point sampled floating point texture?

[swaaye]

Am I looking at a blocky point-sampled floating point texture here? In use for the "light ray" from the window. This is FEAR captured off of a X1950 card.

 

[fellix]

It's more likely to be the lack of PCF texture filtering. Later, the R600 added the support for that method.

http://www.allquests.com/question/1808260/Blocky-shadows-in-COD4.html

 

[jlippo]

Most likely lightbeams are rendered into smaller buffer and blended on top of the frame.
They might have used the multisampling trick and thus losed the ability for proper filtering.