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Re: optimization question: a faster way to PIXMAP? [message #20639 is a reply to message #20579]

Mon, 17 July 2000 00:00

Dennis Boccippio
Messages: 23
Registered: July 2000

Junior Member

In my actual (polygon-based) application, using the Z-buffer improved
significantly over the pixmap. Now that I've got a reasonably-working
algorithm, I'll experiment with POLYFILLV and post the results...

FWIW, I also found that using iterative calls to PLOT,/NODATA to set my
PIXMAP or Z-buffer coordinate bounds used a LOT of overhead. Directly
setting !P.S and !X.RANGE, !Y.RANGE turned out (not surprisingly) to be
much more efficient...

Bless the 5.3 code profiler functionality!!! Between that and the
project manager, it's almost like using CodeWarrior...

DJB

In article <8kv3kg$nnu$1@nnrp1.deja.com>, wrb1000@my-deja.com wrote:

> Dennis,
>
> Guessing - the pixmap function interacts with the video card.
> Utilizing the Z-buffer, the process is probably just a local memory
> allocation/deallocation exercise. Curious to learn the results of the
> POLYFILLV exercise.
>
> Bill B.
>
> --
> "They don't think it be like it is, but it do."
>
> Oscar Gamble, NY Yankees
>
>
> Sent via Deja.com http://www.deja.com/
> Before you buy

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[Message index]

		optimization question: a faster way to PIXMAP? By: Dennis J. Boccippio on Thu, 13 July 2000 00:00
		Re: optimization question: a faster way to PIXMAP? By: Struan Gray on Tue, 18 July 2000 00:00
		Re: optimization question: a faster way to PIXMAP? By: Dennis Boccippio on Mon, 17 July 2000 00:00
		Re: optimization question: a faster way to PIXMAP? By: wrb1000 on Mon, 17 July 2000 00:00
		Re: optimization question: a faster way to PIXMAP? By: Dennis J. Boccippio on Sat, 15 July 2000 00:00
		Re: optimization question: a faster way to PIXMAP? By: wrb1000 on Fri, 14 July 2000 00:00

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