Stephen Heumann
aa38f6d209
Use faster assembly routine for 320-mode raw pixel decoding too.
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The assembly code for the 640-mode and 320-mode routines is moved to a macro so it can be shared between them.
2016-05-20 22:08:05 -05:00
Stephen Heumann
9e401f4a83
Switch to using faster assembly routine (instead of C) for 640-mode pixel decoding loop.
2016-05-14 17:30:44 -05:00
Stephen Heumann
12999358b5
Use a static (instead of dynamically allocated) buffer for SHR pixels generated from raw decoding.
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The program code is moved to a separate segment to make room for the buffer.
2016-05-13 21:44:12 -05:00
Stephen Heumann
141739c985
Clean up headers and make things static where appropriate.
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Also include a few missing prototypes, which could possibly fix bugs.
2016-05-13 20:19:27 -05:00
Stephen Heumann
c6389c9925
Optimize 640 mode raw decoding for case where consecutive blocks of 4 pixels are the same.
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This is also a win provided it can use the optimized case over ~40% of the time.
2015-09-28 22:48:23 -05:00
Stephen Heumann
2f13669a2f
Optimize 320-mode raw pixel decoding for the case where two consecutive pairs of pixels are the same.
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This is only a win if we can use the optimized case a reasonable proportion of the time (~40% or more), but that should be the case for most real screen images.
The equality comparisons are written with XORs because that produces better assembly code.
2015-09-28 20:53:45 -05:00
Stephen Heumann
3c069bc35d
Raw decoding optimization: Do operations using 16 bits where possible.
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This saves a few instructions that were being used to switch to 8-bit mode or mask values down to 8 bits.
2015-09-26 22:16:04 -05:00
Stephen Heumann
f810cb3799
Optimize the core loops for decoding raw pixels a little, in particular deferring increments to the end.
2015-09-26 14:26:05 -05:00
Stephen Heumann
ebf5297779
Switch to standard indentation of closing braces
2015-09-23 20:56:33 -05:00
Stephen Heumann
ab3210adb0
Consistently use spaces for indentation
2015-09-23 20:26:03 -05:00
Stephen Heumann
31ff375570
Post-1.0b1 work in progress from 2004.
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This contains partial code for displaying the cursor locally.
2015-09-23 19:40:17 -05:00
