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Re: Off-Screen-Painting

To: Getting Started <gettingstarted at lists dot realsoftware dot com>
Subject: Re: Off-Screen-Painting
From: Eirik Karlsen <eikarlse at online dot no>
Date: Thu, 10 Feb 2005 23:32:47 +0100
Delivered-to: gettingstarted at lists dot realsoftware dot com
References: <001801c50fb9$7ff00550$0100a8c0 at bremerb7sqedlr> <420BDD19 dot 5A5A4CEF at online dot no> <a0620074bbe318ed06402 at [10 dot 10 dot 13 dot 4]>
I'm using a win box so OldRenderer has no effect.
Resolution is 1024x768 32bit.

A test with 16bit gave 57 frames/sec using the same 680x370 canvas.

"Joseph J. Strout" wrote:

> At 11:15 PM +0100 2/10/05, Eirik Karlsen wrote:
>
> >Also note that there is a huge difference in speed depending on colordepth,
> >obviously 32bit is the slowest.
>
> That's not obvious to me.  Assuming your monitor is set to 32-bit
> color, then drawing a 32-bit picture can be done directly, while
> anything else requires remapping of each pixel.  Of course this is
> offset by having more source data to push around.
>
> >A quick test showed that at
> >32bit I got 41 frames/sec
> >8bit I got 122 frames/sec
> >1bit I got 583 frames/sec
>
> Try it with g.UseOldRenderer=true, and include 16-bit color in the test.
>
> Best,
> - Joe
>
> --
> REAL World 2005 - The REALbasic User Conference
> March 23-25, 2005, Austin, Texas
> <http://www.realsoftware.com/realworld>
> _______________________________________________
>

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Regards
Eirik Karlsen


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