Path: chuka.playstation.co.uk!scea!peter_alau@playstation.sony.com
From: jamin1@psu.edu (Jamin Frederick)
Newsgroups: scee.yaroze.programming.2d_graphics
Subject: Re: banding tiles/sprites
Date: Thu, 04 Jun 1998 14:53:12 GMT
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On Thu, 04 Jun 1998 14:34:20 GMT, jamin1@psu.edu (Jamin Frederick)
wrote:

oops, I meant "...that GsBG tiles couldn't be on odd coordinates..."


>	I got it!  The tiles were on uneven coordinates on the texture
>page, since there were gridlines separating them, and someone from
>SCEE told me this.  I didn't know that GsBG tiles had to be on odd
>coordinates, so I edited the graphics and it's fine now.
>	Mario told me about sprites and he said 4096 doesn't always
>work, use 4095 instead, and it did work -- it was only noticable on
>sprites with thin lines -- the scaling causes those lines to "blink
>out" for some unknown reason!  
>	This kind of stuff should probably be posted on a FAQ.  I'll
>try to work on coming up with a lot of yaroze stuff I've learned in
>the past, so that people don't have to get hung up on silly stuff like
>this.
>
>
>Jamin
>
>On Tue, 02 Jun 1998 22:33:03 GMT, jamin1@psu.edu (Jamin Frederick)
>wrote:
>
>>	
>>	I've been doing 2D stuff with the yaroze for quite a while
>>now, and have recently noticed something wrong with the display of 2d
>>tiles or sprites.  Occasionally I get a "banding" effect that blurs
>>just one vertical line of the tile or sprite, and the load to the main
>>memory is fine b/c I went as far as to look at the byte values of the
>>tim in there.  It seems like the LoadImage() function is transferring
>>the data into video memory wrong, or the actual hardware is blitting
>>to the screen wrong.  I haven't checked the data in the video mem yet,
>>but that's what i plan to do next.  If you'd like to see a screen shot
>>of this problem and think you can help, let me know and I'll send you
>>an attachment.  
>>
>>
>>Jamin  
>