Re: [filter-effects] Color clamping of intermediate filter primitive results

Hi Dirk et al,

Don't you get different results depending on whether clamping happens at
each stage or only at the end?  It seems like this isn't just a performance
question, it's a behavioral question.

- Kris

PS. I've been lurking on this list for a while now, but this is my first
post. Hopefully I'm not overstepping etiquette by jumping in.

On Tue, Jul 23, 2013 at 4:41 PM, Dirk Schulze <> wrote:

> Again, we are about a complexity from linear to a constant in many cases.
> I think that this fact is worth it to questioning the "always-clamp". Even
> with better hardware and GPU acceleration in the future, this would still
> be a win.
> To your previous argument about the cache: Quite often the images are big
> enough to cause cache misses. And even if not, the speedup of one run in
> comparison to n runs over each pixel is huge.
> Greetings,
> Dirk

Received on Thursday, 25 July 2013 10:44:15 UTC