Path: chuka.playstation.co.uk!scea!peter_alau@playstation.sony.com
From: shade@dragonshadow.com (Scott Cartier)
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Re: Using same model with multiple textures and CLUTs
Date: Mon, 08 Nov 1999 22:25:04 GMT
Organization: SCEA News Server
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Herbs,

Glad to know I'm not missing something easy before I do it the hard
way.  I'll probably just copy the model multiple times.  I was hoping
to avoid this since I'm starting to run out of room in the 2 megs we
have, but we'll see how it goes.

Scott

>My final solution was to duplicate the primitives only (not the whole
>model) - then it's just a case of changing 1 pointer (in the TMD header) to
>switch surfaces.  This worked fine for me as I only needed 4 or 5 versions
>of each model and I could afford the memory required.  However, if you can't
>afford the memory, then you could pre-build tables of pointers to index the
>parts of the model to be changed.  For example, if it were just CLUTs you
>are changing, you could have an array of pointers to each CBA in the model.
>Then it would only need a very simple loop to update the CLUT references.
>
>Another way would be to load a new texture into VRAM to overwrite the
>existing one.  This would change the texture without having to touch the
>TMD, but is probably not suitable as it would change the texture for all
>instances of that model.