Re: Re: Sub-pixel area computations

On Thu, May 02, 2002 at 09:52:49PM -0700, Raph Levien wrote:
| On Thu, May 02, 2002 at 09:07:38PM -0700, Keith Packard wrote:
| > 
| > Ok, I spent the afternoon drawing figures on a whiteboard and getting help 
| > from the PSU CS department here in Portland.  I have the kernel of a 
| > solution, which I'll explore here to see if it solves the general case.
| 
| Wow, it looks complicated.

Amen.

I understand and support the effort to produce an
implementation-independent spec.  But have we become too focused on
precision in this case?

For example, is it likely that display effects, like electron-beam
spillover from adjacent pixels, are large compared to the errors that
typically would be introduced by performing the area computations in
lower precision?

Allen