[MPlayer-dev-eng] VIDIX driver for S3 Savage chipsets

[William R Sowerbutts]

Hi there,

I'm using a Shuttle FV25 motherboard as the base for a DVD/DVB-t playback box.
The FV25 uses the VIA ProSavage PM133 Northbridge, which features an
integrated S3 Savage Twister graphics engine (it uses 8Mb--32Mb of the system
DRAM for the framebuffer)

I am using a 1GHz Pentium III in this system with PC133 SDRAM. I see about 80%
CPU load decoding video at 1024x768 in 16 bit colour under X11 with Xvideo
output (using the savage 1.23t XFree86 4.1 driver).


Problem #1: Ideally I'd like to run in 32 bit colour, but this just overwhelms
  the machine (100% CPU load, mplayer complains about the machine being too
  slow...) -- I guess my prejudice against integrated graphics chipsets for
  being slow was well placed ;)

Problem #2: I see a lot of tearing artefacts (even with a 25fps DVD and my
  monitor refresh at 75 or 100Hz) -- I assume that this is due to a lack of
  vertical refresh synchronisation in the driver.