Announcement

Collapse
No announcement yet.

Possible ancient floating point patent workaround?

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Possible ancient floating point patent workaround?

    Reading around at another populair nerd site (yes, that one), a reader posted a link to the fast inverse squire root calculation used in the Quake3 source code.

    What's so special about this calculation is that it performs a floating point calculation in an integer on a x86 by means of assembly language.

    It appears to be so ancient that it was used even before 3dfx came around. (I smell prior art)

    Now I was wondering if the same trick could somehow be used on modern GPU's...

    Link: http://www.beyond3d.com/content/articles/8/

  • #2
    PS: it can even be tweaked to deliver up to as much as 48 decimal precision without a table and still be twice as fast as floating point.

    Comment

    Working...
    X