Path: chuka.playstation.co.uk!news
From: Tom <tm7130@bristol.ac.uk>
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Grrrrr!
Date: Fri, 05 Mar 1999 09:26:03 +0000
Organization: PlayStation Net Yaroze (SCEE)
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Message-ID: <36DFA32B.219B@bristol.ac.uk>
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Ok, I'm really steaming now. I've just spend the last five days doing
battle with RSDTool in the vain hope of getting a model to texture
correctly.

The first problem I hit was that when I saved the model, RSDTool decided
to reduce the u,v texture coordinates on each poly by a third causing
all my texture information to become corrupt. I got around this by
writing a short piece of code to scale all the texture coordinates back
up again in the .mat file.

Unfortunately this scaling down and up again process causes some u,v
information to be lost, meaning that a lot of the textures were 1 pixel
out. This meant I had to go through the .mat file by hand, figuring out
which entries corresponded to which poly and changing the incorrect
values.

This was not fun.

At the end of it all I though, I had a properly textured model sitting
on my screen. Then, I dopwnloaded the model the the Net Yaroze and to my
utter horror found that the GPU displayed the textures differently to
the PC and they were all misaligned again!

I am now reconciled to writing my own texture mapper on the Playstation
which is not going to be enjoyable. I'm sure Sony are conspiring against
me to keep me in the world of 2D gaming as I've not heard of anyone else
with these problems. What the hell is going on?

Cheers,

	Tom