GP2X Displaying Regions


TheDoktor

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Hi

I've been messing around with the display regions using the video post processor.
I only seem to be able to get region 1 working properly.
When I enable the other regions all I get is black for them so they are displaying but I only seem to be getting black.
There is a register for setting the physical address of the frame buffer but it is only 1 register for all regions. I tried writing in increments of 320 * 240 * 2 for the other regions but it's still black.
I must be missing something.
Has anyone managed to get multiple regions working?

Thanks in advance,
Mark.
 
Got it working! (I wasn't setting MLC_OVLAY_CNTR).
All the regions seem to display the same frame buffer, can't see much point in it to be honest except for fading in regions of the screen.
Hooray! I'm finally getting things working! (although I still can't get the bloody blitter to do anything!)
 
At a guess, the regions affect how the other layers (video A/B, OSD, sub) are mixed with the RGB buffer. I've not looked into that part yet, I'm still trying to suss the blitter out - it seems to be accepting data, just not processing it.

Can't wait to get started on the video processor - a whole 4 pages of documentation!
 
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