ReWarp

What does it do:
 
With the contents of this arhive it is possible to run WarpOS software on
AmigaOS4 systems like AmigaOne, classic Amigas, SAM440ep, SAM460, A1222 and
X1000 abd X5000. The WarpOSEmu from Joerg Strohmayer does not work on some
of the newer systems and this was an attempt to fix it.

It also contains a Warp3D wrapper which should enable you to play WarpOS
Warp3D games on AmigaOS 4.1.


Restrictions:
 
Same restrictions apply as with the WarpOSEmu software from Joerg Strohmayer.
Most notably the lack of sound in some of the WarpOS games. Some bang the
Amiga classic hardware directly which is a sure thing to break this wrapper.

Also with the newer supported Warp3D V5 cards, it has become apparant that
compatibility has decreased with Warp3D V4. The Warp3DPPC wrapper should work
fine with Voodoo and Permedia2 cards, but shows drawing errors or hangs with
the (newer) Radeon cards. If this happens please test with Wazp3D from Alain
Thellier and ReWarp together first to rule out an error in ReWarp. ReWarp3DPPC
itself is just a call forwarder and should not be the source of any errors.

Some of the fixes Alain put into Wazp3D and PatchWarp3D are optional patches
you can switch on as an ENV. See below.


Options:

The library supports options through ENVARC:Warp3DPPC. Supported are:

- PatchDrawElements: Use Alain Thellier's patch for W3D_DrawElements.
- PatchDrawArray: Use Alain Thellier's patch for W3D_DrawArray.
- PatchDrawLine: Use Alain Thellier's patch for W3D_DrawLine. 
- PatchAll: Use all of the above.

Default is that none are enabled. Recommended is PatchAll. This has been
tested on a Sam440 with a Radeon 9200 on AmigaOS 4.1FE


In the archive:

powerpc.library:	Library that functions as a wrapper to redirect WarpOS
			calls to the AmigaOS4 kernel.
Warp3DPPC.library:	Library that functions as a wrapper to redirect
			Warp3DPPC calls to native AmigaOS4 Warp3D.library.
env:			Folder containing the ENV options for easy use.


Notes:

Regarding the version numbering: Original powerpc.library runs up to 16.1.
WarpOSEmu continues the number up to 46.x. The powerpc.library for the PPC
PCI cards uses 17.x version numbering. This one uses 18.x version numbering.
This is just to make a distinction between the different powerpc libraries.


The future:

At the moment there are no future plans. ReWarp works fine using WarpOS apps
that don't use custom exceptions (iFusion, wosdb). Software rendering of
Quake, Quake II, Shogo, Heretic II and all the other WarpOS games should work
fine (with some having sound problems; see above). Some need to use system
calls to render (no direct framebuffer manipulations allowed).

Another story is with the Warp3DPPC wrapper. As said, V4 compatibility with the
newer graphics cards has become worse. Some errors with the Radeon R200 cards
could be solved by using patches but not all. V4 can use indirect rendering and
V5 does not for example. Any patches to improve compatibility are welcome.