[Bug 4140] Emu48 with HP49 ROM

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=4140





--- Comment #9 from Thomas Arendsen Hein <thomas at intevation.de>  2009-10-13 13:40:04 ---
Emu42 1.12 contains a workaround for this, see
http://hp.giesselink.com/Emu42/CHANGES.TXT

- changed function UpdateMainDisplay(), removed assertion for zoom
  factor because the Sacajawea implementation don't use this factor
  -> the assertions are now in the Lewis drawing routines, use
  calculated display size for BitBlt() operation and exchanged
  BitBlt() with StretchBlt() because of a serious bug in the WineHQ
  BitBlt() implementation (in this environment StretchBlt() is ~5us
  slower than BitBlt() so it doesn't really matter from the speed
  aspect)

I verified this with wine 1.1.30 running emulations for HP42S and HP28S.

Emu48 contains a similar workaround, so I think this bug can either be closed,
even if the general problem (incomplete BitBlt implementation) is not solved
yet, or the title changed to:
BitBlt problem with old Emu48 or Emu42 versions

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