The implementation was not correctly rounding the scaled position
with mulru, leading to occasionally incorrect hit detection at
the boundaries of boxes.
This implementation is not 100% engine accurate, but it is
more accurate than what was there, and hopefully the differences
between this and the engine code are merely cosmetic.
The known (intentional) differences are:
1. Uses ScummVM rects inside the engine code, converting to/from
SCI rects on the kernel edges and when scaling
2. Fewer side effects when performing operations that *should*
have been pure from the start (like text dimension calculation).
Still not side-effect-free, but at least things like colours
and alignment do not need to be reset every time a measurement
is taken, unlike in the actual engine.
Editor controls and some other kBitmap code are temporarily
disabled as a result of changes to GfxText32 until they can be
updated to be engine-accurate.
Now that the renderer is loading resources without spinning CPU time
on decompression every frame, it becomes apparent that kFrameOut is
spammed constantly by the interpreter and needs to be throttled to
ensure that transitions and fades work properly.
This fixes the regressions caused by refactoring in SCI32. Thanks to
Timo Korvola for tracking down the issue and providing an initial
patch in bug #6452
More transparency/color mapping effects are now working (e.g. the
flashlight at the Gedde tomb in GK1, the rays of light at Schloss Ritter
in GK1, the torch in the QFG4 demo and the shadows in QFG4, PQ4 and KQ7)
Fixes some graphics glitches in the QFG4 demo and the menus of QFG4, by
implementing one of the transparency effects used mainly in SCI32.
Many thanks to fuzzie for her debugging info on QFG4 demo and to wjp for
his great help on the dissassembly
- Added a stub for kSetScroll, which sets the target picture immediately
for now
- Added an initial stub of kPalCycle (doesn't work correctly yet)
- Adjusted the signatures of kUpdateLine and kDeleteLine for LSL6
- Unmapped kSetHotRectangles again, with updated information on how it
is used in Phantasmagoria
Filippos Karapetis
Colin Snover
Willem Jan Palenstijn
Martin Kiewitz
Johannes Schickel
Filippos Karapetis