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path: root/engines/sci/graphics/transitions32.h
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2017-01-12SCI32: Add workarounds, transitions, fixes for PQ4CDColin Snover
2016-12-12SCI32: Adjust transition timingsColin Snover
Transition timings were originally chosen largely by feel in SQ6, as there was little other evidence to determine the correct speed. As additional games started being playable in ScummVM, it became apparent that these speeds were not quite right. Additional adjustments may be needed in the future, but these new timings seem to be somewhat closer to expectations than before.
2016-10-22SCI32: Fix slow SCI2.1mid transitionsColin Snover
SSCI transitions code sends a large number of small show rects to the graphics manager, one at a time, for each division of a transition. Each time a rect is submitted, a call to showBits is made. This design was used when transitions for SCI32 were first implemented in ScummVM, and it worked OK because the hardware surface was updated by EventManager::getSciEvent, not showBits, so the large number of calls to showBits from the transitions code did not adversely affect engine performance. Later in SCI32 engine development, hardware surface updates were changed to occur in showBits so that the hardware surface would be updated at frame-out time, instead of at input-in time. This change meant that now the large number of calls to showBits from transitions became very expensive, and the engine would stall constantly refreshing the entire hardware surface. To fix this problem, the transitions code now (1) maximises the size of rects coming from transitions, when possible, and (2) only calls showBits when all the rects from one frame of a transition have been calculated and added to the show rects list. Additionally, there were some arithmetic errors in the implementation of pixel dissolve that have been corrected in this changeset. Fixes Trac#9614.
2016-08-01SCI32: Implement plane transitions (kSetShowStyle and kSetScroll)Colin Snover
This commit implements all of the known plane transitions from SCI2 through SCI2.1mid games. Because kSetShowStyle is always called indirectly via the Styler game script, it is difficult to find all the places where transitions are used. As such, transitions that appeared to never be used have been added as stubs which will trigger a game crash with a message to report what was being done, so any missed transition types can be identified quickly and then implemented.