Need fast graphics

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2 total messages Started by gubser urs Mon, 07 Sep 1992 16:37

#816

Author: gubser urs
Date: Mon, 07 Sep 1992 16:37

8 lines
908 bytes

Is it possible to draw directly into a Windows view without any
SystemCalls ?

--
* Urs Gubser        | Email: ugubser@amiga.physik.unizh.ch (NeXT - mail)      *
* Bergheimstrasse 7 |        ugubser@avalon.physik.unizh.ch (NeXT - mail)     *
* Zuerich           |                                                         *
* Switzerland       | Bix: urs                                                *

Re: Need fast graphics (Don't go to the Dark Side)

#853

Author: William Shipley
Date: Tue, 08 Sep 1992 17:35

22 lines
1443 bytes

gubser urs writes:
> Is it possible to draw directly into a Windows view without any
> SystemCalls ?

Possible, but a Bad Idea.  Consider that there are already NeXTstation  
monochromes, turbos, colors, color turbos, and NeXTdimensions, and that they've  
announced NS486 and it'll have to run on a variety of video cards.  How many  
times do you want to rewrite your display code?

3.0 provides some fast ways to blit an image onto the screen out of line, and  
if your data is set up just right you can supposedly slam 400x400 at 37-40ms on  
a 25Mhz NeXTstation Color.

So, draw in an unpacked and correctly aligned off-screen buffer, then slam your  
data into a retained window.  You're rocking.  The total win is that on other  
architectures graphics will just be slower, rather than failing entirely.

Check the document  
/NextLibrary/Documentation/NextDev/ReleaseNotes/WindowServer.rtf for details,  
that's all I know.

-W

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