Matrox MGA:
A break from work can save the day all so to say. Fixes bitblt'ing on WinNT4.0/Win2000 using 32bpp modes and possibly other stuff using said Matrox chip.
XGA:
1. Added a proper poll so to have its timings independent of the SVGA core and changes its renderer accordingly, mainly a blank render one.
2. Workaround the Ctrl-Alt-Del reset of Windows 2.x so that it switches back to VGA text mode correctly when using the 0xA000 64K aperture (in vid_svga.c).
SVGA core:
Re-organized the way the different timers are organized so that the XGA and 8514/A pollers can coexist with the SVGA timer without conflicts.
ATI Mach32:
Reworked the true color renderer and made it a Mach32 exclusive due to its differences from the standard one. Fixes wrong rendered colors in NT using the 32bpp renderer in RGB mode.
Generic SVGA layer:
Added function pointers of the banked mapping for use with add-on cards with their own mapping when the VGA card banked mapping is not active or viceversa (e.g.: XGA).
XGA-1/2:
1. Reimplemented Area Fill and Boundary Mode as best as possible.
2. Fixed conflicts with banked mapping with VGA clones.
3. Fixed inverted colors (again) on accelerated 16bpp mode under OS/2.
Video7 with ATI 8514/A add-on.
Added a workaround (BIOS issue? I don't know) that disables 8514/A mode and reenables VGA mode when needed. Fixes screen freezes and polling issues with various drivers for Windows and others.
ATI Mach8-based (add-on only):
Do not override the clone VGA banked mapping with the standard VGA when needed. Fixes issues with banked mapping with ATI 8514/A enabled on cards with clone mappings such as Cirrus, Video7, Paradise/WD, etc.
S3:
1. Cleaned up the Short Stroke command processing.
2. Proceed calculating the error term only when it's equal or greater than the line length (Draw Line, Command 1 and also applies to Short Strokes, Command 0).
8514/A compatibles:
1. Reworked the polygon draw type A processing.
2. As with the S3, reworked the way error term is handled in the processing, and on Command 5 (Draw Polygon Boundary Line).
