vertical hardscroll or 130560 pixels with less than 1% cpu

alonetrio · Post by **alonetrio** » Tue May 17, 2005 12:04 pm

hey ya!

i'm back with another lame source code called: "lame hardscroll like"

it's just a little sample code to show you how you can "fake" move
130560 pixels with less than 1% cpu.

http://www.psp.to/download.php?dcategor ... DE&sortby=

i know that's for all old sceners, it's a well known tricks but think about those who nerver seen
a good phenomena ( amiga ) , mcs ;) or delta force ( st ) production ;)

based on this technic i am pretty sure you will find how to code the horizontal one.

btw the vram placement is 8 pixels precision, so you will have to be creative ;)

and to finish, i have a little question : what is the vram size ?
from 0x4000000 to ?

Shazz · Post by **Shazz** » Tue May 17, 2005 5:15 pm

I love you Alonetrio :D

Can't wait for a way to test it :D

Shazz/Still on ST :D

Post by **blackdroid** » Tue May 17, 2005 6:01 pm

vram mem is 2MB, but you can have the gpu read from main mem, anyway this info is easily found on any psp spec page you can google up.

Lukasz · Post by **Lukasz** » Thu May 19, 2005 7:00 am

blackdroid wrote:vram mem is 2MB, but you can have the gpu read from main mem

Please post some code for that.

blackdroid wrote: anyway this info is easily found on any psp spec page you can google up.

Doesn't change the fact that some one found the post useful, even if you didn't.