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MUPDF/DGJPP test release! (Users)

posted by travolter(R), 22.02.2011, 11:12

> I tried to recompile MuPDF with some better optimizations, maybe help
> little bit
> http://rayer.ic.cz/350d/mupdf_07_dos.zip
> -O3 -DNDEBUG -fomit-frame-pointer -frerun-loop-opt -ffast-math
> -march=pentium-mmx
> But I didn't rebuil all libs.
> I also changed profiling debug output, you should see total render time and
> img blit time. I got very different numbers in 2 test case:
> real PC: 25 / 24 ms (800x600/32bpp bankswitch (under XP))
> DOSBox: 253 / 10 ms - so here you can see the effect of slow CPU but fast
> gfx.

I was testing this new version and speed is almost the same
image in screen 340x480/4 152/14 ms

> So it would be interesting what is your ratio (low performance CPU vs low
> bandwith LFB transfer).

> Probing VESA videomode 1024x768/24
> VideoModeNumber = 4118h
> 2359296 kB allocated for FrameBuffer
> LFB Selector = C7h
> LFB PhysBasePtr = F0000000 h
> Measured refresh rate = 87.39 Hz
> Measured 19 FPS (FrameBuffer>VRAM)
> (transfer speed 43 MB/s)

VESA VBE 2.0 MagicGraph 128XD 40K SVGA BIOS [1984 kB]
probing 640x480/16
VideoModeNumber = 111h
614400 B allocated for FrameBuffer
WinFuncPtr = C000:1BF4h
WinGranularity = 64 kB
NumBanks = 9
LastSize = 24576 B
Measured refresh rate = 60.6 Hz
Measured 45 FPS (FrameBuffer>VRAM)
(transfer speed 26 MB/s)

I notice that I never enabled write combing under msdos.. Ill try with it... mayeb I gain some speed

 

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