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Author Topic: Backdrop degrades when loaded  (Read 1546 times)

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Offline Karlos

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Re: Backdrop degrades when loaded
« on: December 30, 2009, 08:13:02 PM »
Quote from: punkyclown;535448
Sorry, I am running a 64 color pic on an A1200 with 1230 board with 32 megs of ram.


Do you mean the picture is 64 colours or the screen mode is 64 colours or both?

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I am running OS 3.9 BB1 & BB2.  So you are saying if I reduce it to 32 colors it will not degrade?  Thanks.


The Workbench screen itself allocates several colours (usually at least four) for it's own use. So, if your screenmode uses 64 colours, it may be that only 60 of them (and probably a fair few less) are available when drawing your background image. So, if your background image contained 64 or more colours, it will be remapped when used as a background. Consider that the background, icons, workbench colours etc all have to fit into your screen's 64-colour budget, so sacrifices are made.

I used to use a carefully edited (and dithered) set of images that had 16 colours in them on a 32 colour screen. It was a decent enough compromise at the time but all that went out the window when I got my first amiga graphics card.

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Also is there someway to get a 1024X768 screen on an AGA machine?


Sure, for that you'll need the HighGFX monitor driver (see aminet.net). However, it is not guaranteed that your existing monitor will support it. If you have some cash spare, I believe it's well supported by the Indivision AGA flickerfixer.
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Offline Karlos

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Re: Backdrop degrades when loaded
« Reply #1 on: December 30, 2009, 08:42:36 PM »
Regarding HighGFX, search the gallery here and put "highgfx" in the search box.

Plenty of 1024x768 AGA fun to be had :)
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