Date:  Wed, 28 Nov 2001 14:48:34 -0500
From:  madodelatptdprolog.net
Subject:  [VOICENWS] Software Screen to Screen BitBlt Acceleration GRADD filter, r0.0.6

From: tamatgmx.de (Timo Maier) 

This is a small GRADD filter driver that can accelerate simple 'Screen to
Screen' BitBlt operations under unaccelerated GRADD drivers. As a GRADD
filter driver, SSSBBACC.DLL is installed between GRADD video manager and
GRADD video driver, and watches over simple (but definitely important)
form of 'Screen to Screen' BitBlt GHI commands: - both source and
destination are VRAM - source-copy raster operation, with no pattern, no
transparency, no stretching and no clipping If such commands responded
software emulation, SSSBBACC intercepts and processes them by own blitters
faster than SOFTDRAW, and reports completion to VMAN. Assembler-coded, MMX
/ SSEint-ready blitters are heavy optimized for uncached memory reads and
write-combined memory writes, designed in order to eliminate unnecessary,
quite slower peripheral bus cycles as much as possible. Typically, such
slower software BitBlts may speed up to 1.5x ~ 2.5x. Highly recommended
for unaccelerated or poor-accelerated GHI (such as GENGRADD, M64GRADD in
24bpp, INTGRADD and so on) users.  

http://hobbes.nmsu.edu/pub/incoming/sssbbacc_r006.zip
http://hobbes.nmsu.edu/cgi-bin/h-search?key=sssbbacc_r006.zip

                           
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