Path: chuka.playstation.co.uk!news
From: loonybit <ba124908@augsburg.baynet.de>
Newsgroups: scee.yaroze.programming.2d_graphics
Subject: Re: TIM
Date: Tue, 15 Sep 1998 18:45:31 +0200
Organization: PlayStation Net Yaroze (SCEE)
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References: <35FE90A1.C741958C@augsburg.baynet.de> <35FE94CC.F801DE5@scee.sony.co.uk>
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Thanks a lot, helped me a lot.


James Russell schrieb:

> loonybit wrote:
> >
> > How is an 8 bit CLUT constructed or represented in memory?
>
> A CLUT entry consists of three 5 bit values packed together into two bytes. The last bit is used to
> turn semi-transparency on and off. This means that an 8 bit CLUT will be 512 bytes of RAM, and a 4
> bit CLUT will be 32 bytes of RAM.
>
> > Are the values in the TIM file indexes for the table (0 is first entry)?
>
> Yes. Because it is an 8 bit CLUT, there is one index per byte in the file. For a 4 bit CLUT, there
> are 2 indexes per byte (one in the high nibble, one in the low nibble).
>
> Cheers,
>
> James
>
> --
> == James_Russell@scee.sony.co.uk                +44 (171) 447-1626
> == Developer Support Engineer - Sony Computer Entertainment Europe
>
> Socrates last words: "I drank WHAT?"