|
|
Atari demoscene BBS
| Blitter intro |
|---|
|
Posted by: Frank B
|
Aug,27.2015-00:44
|
Hi.
I've created a little bench mark demo for the ST blitter. It should run on any STE though I've not tested it on real hardware.
An earlier version of this was written for the PB disk magazine which was never released.
It renders some 32*30 two planes bobs in several modes. It can use the blitter, preshifted CPU sprites or a realtime CPU shifter using mcoders two planes techique.
It logs the amount of bobs on screen and the frame count taken to render them. It should be a fairly good comparison of CPU vs blitter.
The graphics were ripped from the ST ROM and from an old Amiga demo.
The keys are
1 and 2 to increase or decrease bobs on screen
3 - 5 for rendering modes (blitter, cpu preshift and real time cpu shift)
f1-f8 will let you play with the bob flight path.
I've focused on the code being general purpose and maintainable. The earlier version could draw 30 bobs on the screen in a frame. This one is slower at the expense of being general purpose. I'll optimise it later.
Hope someone has fun with it :)
It can be found on:
http://www.atari-forum.com/viewtopic.php?f=25&t=28424&p=279027#p279027
|
[All messages in this thread] [Start new thread]
What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
|
