Gif & Gs From EE

tumnes · Post by **tumnes** » Tue Sep 21, 2004 2:30 pm

I was wondering how you get access to gif registers from the EE. I know that they are mapped into the memory of the ps2. If i were to just change a value at the memory location of one of these registers is that the proper way to do it? Also I am unclear as to how data is transfered from the EE to the Gif. If anyone could clear it up I would appreciate it. Is there any open source code i could look at that involves this? Thanks in advance.

apache37 · Post by **apache37** » Tue Sep 21, 2004 3:11 pm

take a look at gslib or GsKit. GsKit is in the cvs here: http://cvs.ps2dev.org/gsKit/

Shazz · Post by **Shazz** » Tue Sep 21, 2004 5:27 pm

Or look at Dreamtime's tutorials, you'll understand mostly all about GS registers you can access from the EE directly and DMA packets you need to send to the GIF

http://ps2dev.org/kb.x?T=714

And after you can have a lookt to the Questiosn & answers forum and look for gfxpipe, it explains how to improve communication performance between the DMA the GIF and the EE...

Have fun !

Post by **blackdroid** » Tue Sep 21, 2004 7:33 pm

Privileged GS registers can be read and/or written to from EE, the other registers ( general purpose registers ) are written to with the help of gif packets that you tell dmac to send, and most example code (dreamtime's tutorials, gskit, itolib, gslib, pbdemolib) shows how to send a gif packet via dma channel 2.

tumnes · Post by **tumnes** » Tue Sep 21, 2004 11:21 pm

Awesome, thanks guys!

Post by **ooPo** » Wed Sep 22, 2004 1:45 am

This tutorial may also be useful:

http://www.oopo.net/consoledev/files/ps ... buffer.txt

Shazz · Post by **Shazz** » Fri Sep 24, 2004 12:08 am

DEfinitively the last version of the gsLib, 0.51, seems to be THE solution, well described & documented, provide gfxPipe support, source code provided, examples...

I don't know what could prevent me to use it !

http://ps2dev.org/kb.x?T=977

Post by **pixel** » Fri Sep 24, 2004 12:35 am

I think Drakonite has some feedback about that code... :p

Shazz · Post by **Shazz** » Fri Sep 24, 2004 2:41 am

Pixel, really ???

Hum interesting, please keep me awaaaaare (comme dirait JCVD) before I modifiy my current lib based on gfxPipe...

So maybe is it the good time to ask the question, which gfx libn seems the more interesting to use :
- based Dreamtime sources (from his tutorial)
- Vrzzzn's gfxPipe
- GsLib
- Libito
- GsKit (seems not mature yet)
- homemade lib :D (Raizor ? Pixel ? Napalm ?...)
- DreamGL (who wants to really use OpenGL ??? :D)
- other ?

Post by **Drakonite** » Fri Sep 24, 2004 3:27 am

The main thing with gslib is just the whole c vs c++ debate...

If converting from gfxpipe, gslib is a pretty good choice, a lot of stuff is a command for command replacement. Beware though, ignoring the problems I've had building gslib because of it being in c++, it also seems to have problem building with ps2sdk and the newest toolchain. Hopefully Hiryu will get that fixed soon.