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Author Topic: amiga os graphics + videoboard  (Read 956 times)

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Offline DizZy_Topic starter

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amiga os graphics + videoboard
« on: October 04, 2004, 11:41:40 AM »
Hi there!
help please!
where can i find some simple examples how to use videoboard without rtg*.library? Prefer in C or asm.

thanks.
 

Offline bloodline

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Re: amiga os graphics + videoboard
« Reply #1 on: October 04, 2004, 12:38:46 PM »
Quote

DizZy_ wrote:
Hi there!
help please!
where can i find some simple examples how to use videoboard without rtg*.library? Prefer in C or asm.

thanks.


You would need the Technical specs for the Video board then... and you wouldn't be able to use the OS.

Offline DizZy_Topic starter

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Re: amiga os graphics + videoboard
« Reply #2 on: October 04, 2004, 12:43:15 PM »
so i cannot use it as linear ehh array (without bitplanes) using OS api? I.e. 1 byte - 1 $ffcolored pixel
 

Offline bloodline

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Re: amiga os graphics + videoboard
« Reply #3 on: October 04, 2004, 12:57:27 PM »
Quote

DizZy_ wrote:
so i cannot use it as linear ehh array (without bitplanes) using OS api? I.e. 1 byte - 1 $ffcolored pixel


Yeah, but you need to use some kind of driver to set up the linear frame buffer... Cybergfx, P96 and the rtg.library do that for you.

Offline Karlos

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Re: amiga os graphics + videoboard
« Reply #4 on: October 04, 2004, 01:17:15 PM »
Both the P96 and CGX developer APIs are available.

Even if you just use CGX v3 functionality you will be compatible with a broad range of systems.

For chunky pixel access to a BitMap under CGX, all you need to do is use LockBitMapTags(), having first ensured that the bitmap is a CGX compatible one. Things like allocating, freeing, blitting etc are still handled by the normal graphics.library.

int p; // A
 

Offline DizZy_Topic starter

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Re: amiga os graphics + videoboard
« Reply #5 on: October 04, 2004, 01:25:29 PM »
i think i've choose rtg*.library :)

im using picasso96


thanks