Re: [cc65] TGI pixel aspect ratio

From: Ullrich von Bassewitz <uz1musoftware.de>
Date: 2009-10-29 16:40:19
On Thu, Oct 29, 2009 at 03:10:12PM +0100, Oliver Schmidt wrote:
> However I disagree with your statement that the 'pixel aspect ratio'
> is unrelated (not even talking about 'completely unrelated') to the
> resolution, size or aspect ratio of the display.

No need to duel each other:-)

The idea to have the driver publish an aspect ratio is a good idea. For TGI,
we will use a 16 bit fixed point number (8 bits before and after the decimal
point) that tells how to make circles on the standard display, taking the
resolution and the side ratio of the CRT into account.

The sine/cosine routines will return the same fixed point format.

Regards


        Uz


-- 
Ullrich von Bassewitz                                  uz@musoftware.de
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Received on Thu Oct 29 16:44:23 2009

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