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From: mlelstv@immd4.informatik.uni-erlangen.de (Michael van Elst )
Newsgroups: comp.sys.amiga.tech
Subject: Re: Fast OverScan-Dual Playfield-Double-buffering under Intuition
Keywords: (can it be done?), FAST!!!!, 1.4+ wish?
Message-ID: <559@medusa.informatik.uni-erlangen.de>
Date: 2 Nov 89 11:17:24 GMT
References: <1989Oct30.232058.28752@polyslo.CalPoly.EDU> <1989Oct31.185224.11088@polyslo.CalPoly.EDU>
Organization: IMMD IV, University of Erlangen, W-Germany
Lines: 25

jheintz@polyslo.CalPoly.EDU (Jim Heintz) writes:

>I guess the question is, can I somehow incorporate my own View structure
>within the intuition screen structure (1.4+ wish) , and then somehow 
>merge the intuition View with my View and ViewPorts, and then
>LoadView(intuiview).

Since Screens are viewports to the graphics system, you can only
incorporate your viewports as intuition screens.

Things are easy.
Your viewports show some kind of bitplanes and sprites and may do
some fancy copper actions.

Open a screen (with the correct resolution to show your bitmaps).
You may specify CUSTOMBITMAP to show precalculated images.
Create your UserCopLists and put them into the screen's viewport structure.
A MakeScreen and RethinkDisplay will show the results.

To doublebuffer your screen you have to swap the RasInfo pointer in the
screen's viewport structure to the new RasInfo, MakeScreen and RethinkDisplay.

				Michael van Elst

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