Path: chuka.playstation.co.uk!news
From: Max <mad.max@which.net>
Newsgroups: scee.yaroze.freetalk.english
Subject: 2D Tutorial... Need help - please
Date: Tue, 09 Jan 2001 14:56:59 +0000
Organization: Max Studios
Lines: 32
Message-ID: <3A5B26BB.89E5AC69@which.net>
NNTP-Posting-Host: p25-woodpecker-gui.tch.which.net
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 4.61 [en] (Win98; I)
X-Accept-Language: en

Following a screw up on the Yaroze Scene message boards I will post it
here instead:

Amoungst other stuff I am doing right now I am learning a bit of 2D on
the Yaroze. As I learn I am doing a tutorial so that others can benefit.
This tutorial will of course be exclusive to Yaroze Scene, But I am
having a bit of trouble...

Can anyone tell me please what exactly these lines of code mean?

1. static GsOT_TAG wtags[2][1<<OT_LENGTH];
2. #define PACKETMAX2 (PACKETMAX*24)
3. static PACKET packetArea[2][PACKETMAX2];

1. why is this a two dimensional array and what should [1<<OT_LENGTH]
equate to (OT_LENGTH is 9 btw)?
2. why is a second PACKETMAX needed and why does the coder not put in
the actual number value instead of doing a multiplication?
3. why is this a two dimensional array and does anyone know where the
library reference is for the PACKET structure is?

I also wish to know what a packet is... is it the smallest amount of
data that can be processed by the GPU at any one time?

I know there are a lot of experienced 2D Yaroze coders out there so
help!!!!
No doubt I will have many more questions later so look out :)

Cheers all
Max