PF + PocketHAL premilinary report

[Kzinti]

[Conan]

there's my PocketFrog 'rocky' demo. It's a side scroller with a few sprites & a moving background.
See http://www.sundialsoft.freeserve.co.uk/ ... og_Ch4.htm
The article has a link to download the project (in red box towards end of article)

[Kzinti]

Thanks Conan! I forgot about this demo =)
I will add it in my testing tool.

[bluescrn]

I had a quick look at the StrongARM SA-1110 docs last night...

Looks like you can set the vblank period to be anything from 1 to 64 lines

More interestingly, the chip supports 4 and 8bpp palettized modes! If possible, using 8bpp could be a nice optimization for 3D engines!

And it looks like the base address of VRAM can be changed (must be 4-byte aligned - so no smooth 'hardware scrolling' though)

Can an app just write to these registers ( 0xB0100000 area)? Or is that memory region protected? Does the code that writes to them have to be implemented as some sort of device driver? (I've got no idea how that'd work on PocketPC)

[Johan]

Thierry: Just a thought (being very interested in a non-rotated backbuffer since it would simplify development significantly):

If you use GDI and the user requests a landscape display (320x240), wouldn't you have to perform two blits to get the backbuffer to display instead of one (one - blit with rotation from 320x240 to 240x320 GDI offscreen bitmap, two - GDI BitBlt from offscreen bitmap to display)? Or did you find another fast way of blitting to the GDI back buffer?

[Kzinti]

[Kzinti]

[bluescrn]

[Johan]