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OS/2 Shareware BBS: 10 Tools
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README
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1996-03-14
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This package includes the latest DIVE changes for 1995.
The following package includes
dive.h, fourcc.h, endivedr.h
dive.lib
dive.dll
R565LUT8.LUT
YUV_LUT8.LUT
Y644LUT8.LUT
The *.LUT files go into the \mmos2 directory.
DIVE.DLL goes into your \mmos2\dll directory
The lut files for a performance fix for in 256 color systems.
These are precomputed lookup tables for better color translation.
They will only be used in 256 color resolutions. Previously,
DIVE would generate these files on your hard drive.
DIVE 95 contains the following updates
1.Coordinate space conversion, horizontal and vertical image inversion
DIVE will query the OS/2 ini file for DEGREEROTATION and if set to
180 (the only supported value), the coordinate system applied to
screen blitting will be inverted both horizontally and vertically.
2.Interfaces to enable the GAME server to dynamically change screen
resolutions, so game performance will be improved when their display is
maximized on systems that do not have video accelerators. This support
is the same as previously shipped with full screen dive versions.
3.Transparent blitting capability, to enable image data to be blitted
selectively based on source pixel data values.
4.YUV422 image format as both a source and destination format in the
software blitter engine. BYTE swapped in word and dword variations
are also supported as output formats.
5.Support for image inversion when overlay acceleration is being used.
6.Support for switching between software blitting and hardware accelerated
blitting through EnDive dynamically, based on the return from a new
DevEscape. DEVESC_SETUPBLITTERNOTIFY defined in endivedr.h
7.Color space conversion from direct color space to LUT8 now utilizes
pre-computed lookup tables for better start performance.
Limitations
The above DIVE support does not apply to software motion video which
requires additional fixes. These fixes will be available in future
releases of OS/2. Some of these fixes including the above DIVE support
is available from the DevCon 9 special edition.