Blitz (116/144)

From:Jason Faramus
Date:27 May 2001 at 15:52:38
Subject:256 Colour screens?

Hello,

Can anyone tell me if it's possible to create a 256 colour, 8 bit plane
intuition screen. I know that it can be done with a bitmap for use with Blitz
mode but I cannot find anything about doing the same for screens. In the
manual it say that the depth of a screen can only be 1-6 bit planes but surely
you can use AGA's 8. Please let me know if I'm missing something here.

On another note, I've been thinking about my blitting and using display
scrolling problem and was wondering if the following might solve the problem.

At the moment whatever I blit get's display scrolled to, so can anyone tell me
if this solution might work as I really need to use blits and not sprites,

1. Display scroll the empty background.
2. Copy this to a hidden bitmap, out of sight of the main display.
3. Blit our shapes onto the main display.
4. Copy our hidden bitmap to the main display.
5. Display scroll this background.
6. Copy this to the hidden buffer.
7. Blit our shapes again.
8. Repeat...

So to escape the display scrolling of the blitted shapes we only display
scroll every other frame and blit on the frames inbetween thus the display is
not being display scrolled when the shapes are visible. Any chance of this
idea working or am I dreaming? If not has anyone got an alternative idea?

Best wishes,
Jason.

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