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Article #1124Re: getting the palette from a PCX file
From: John A. Slagel
Date: Tue, 13 Oct 1992 15:17
Date: Tue, 13 Oct 1992 15:17
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ccsteve@cybaswan.UUCP (s marshall) writes:
>I have recently been developing a graphics library for the PC, and have
>come across a problem manipulating PCX files.
>I can load in the image succesfully, but cannot get the palette to set
>correctly.
>Any suggestions as to what the problem might be would be much appreciated.
Steve- I think your problem is this: A .PCX file stores the RGB
intensities in the range of 0-255. However, when you set the VGA
DACs, the values can only be from 0-64. So, you need to run through
your array of RGB values and divide them by 4 before sending 'em
to the VGA palette registers. This should solve it.
--
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John A. Slagel, email: jas37876@uxa.cso.uiuc.edu
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Path: arc1-ca.pugleaf.net!sparky!uunet!ogicse!uwm.edu!ux1.cso.uiuc.edu!news.cso.uiuc.edu!uxa.cso.uiuc.edu!jas37876 From: jas37876@uxa.cso.uiuc.edu (John A. Slagel) Newsgroups: rec.games.programmer Subject: Re: getting the palette from a PCX file Message-ID: <Bw2Fto.BD@news.cso.uiuc.edu> Date: 13 Oct 92 15:17:45 GMT Article-I.D.: news.Bw2Fto.BD References: <1061@cybaswan.UUCP> Sender: usenet@news.cso.uiuc.edu (Net Noise owner) Organization: University of Illinois at Urbana Lines: 20