Path: chuka.playstation.co.uk!scea!greg_labrec@interactive.sony.com
From: mperdue@hrtc.net (Mario Perdue)
Newsgroups: scea.yaroze.programming.2d_graphics
Subject: Re: changing resolutions
Date: Fri, 01 Aug 1997 16:25:11 GMT
Organization: SCEA Net Yaroze News
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Message-ID: <33e20b43.7942317@205.149.189.29>
References: <33E1FCFE.5F42@erols.com>
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Clint,

I just took a quick look at your code and noticed a couple of things.
First, you need to set the system in interlace mode to use the 480
vertical rez. This is done in the GsInitGraph() function call. Also,
in interlace mode, field swapping is performed automatically when the
frame buffer origins are set to the same location. Try this:

	GsInitGraph(640, 480, 0, 0, 0);
	GsDefDispBuff(0, 0, 0, 0);

Another thing to watch for if you're making changes to existing code
is the location of the TIM files in the frame buffer. If you've got a
texture page in the area covered by the screen (0,0 - 640,480) you're
going to have trouble. Many of the samples place image data at 0,320,
so you need to make sure you move it.

Mario

On Fri, 01 Aug 1997 11:13:02 -0400, Clint Kelly <clint@erols.com>
wrote:

>I'm just starting my first program, and right now I'm experimenting with getting my 
>sprites on the screen.  This program works fine when SCREEN_WIDTH and _HEIGHT are 320 
>and 240, but when I change them to 640 and 480 my program doesn't display anything.  
>What's the problem???
>
>[ship]