77 lines
3.0 KiB
Plaintext
77 lines
3.0 KiB
Plaintext
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What works:
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- Supports 8bpp, 16bpp and 24bpp. Heavy testing on SM720.
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XCONFIG options:
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The driver supports quite a few different XConfig options, which can
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be used to tune the driver and improve performance. Without any options,
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the driver will use conservative settings which should work on most
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hardware. Large improvements in performance are possible by selecting
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the proper options, which will probably work on most systems.
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Cursor:
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- "hwcursor" "off" behaves exactly like "swcursor". Default: "on"
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- "swcursor" will disable the HW Cursor. HW Cursor is used by default and
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no option is needed to enable it.
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Display:
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- "ShadowFB" Use shadow framebuffer. Default: off.
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- "Rotate" "cw" | "ccw" Rotate the screen CW - clockwise or CCW - counter
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clockwise. Uses ShadowFB. Default: no rotation.
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- "UseBIOS" Use BIOS to set modes. Default: on.
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- "ZoomOnLCD" Allow changing resolution on panel. Default: off.
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Overlays:
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- "VideoKey" Set chroma key for video. Default: Off blue.
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- "ByteSwap" Turn on YUV byte swapping. Defaul: off.
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Video memory:
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- "set_mclk" sets the memory clock, format is:
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Option "set_mclk" "50000"
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in the XF86Config file. Valid values are any
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integer <= 100000, where 100000 == 100 MHz.
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Acceleration and graphic engine:
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- "NoAccel" turns off all acceleration
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- "fifo_aggressive", "fifo_moderate" and "fifo_conservative" alter the settings
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for the threshold at which the pixel FIFO takes over the internal
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memory bus to refill itself. The smaller this threshold, the better
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the acceleration performance of the card. You may try the fastest
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setting ("aggressive") and move down if you encounter pixel corruption.
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The optimal setting will probably depend on dot-clock and on color
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depth. Note that specifying any of these options will also alter other
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memory settings which should increase performance, so you should at
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least use "fifo_conservative" (this uses the chip defaults).
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- Common XAA acceleration options to disable primitives for test purposes:
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"XaaNoScreenToScreenCopy"
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"XaaNoSolidFillRect"
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"XaaNoColor8x8PatternFillRect"
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"XaaNoImageWriteRect"
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"XaaNoPixmapCache"
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PCI bus:
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- "pci_burst" will enable PCI burst mode. This should work on all but a
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few "broken" PCI chipsets, and will increase performance. Option may
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take a parameter "on", "off", "yes", etc...
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- "pci_retry" will allow the driver to rely on PCI Retry to program the
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ViRGE registers. "pci_burst" must be enabled for this to work.
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This will increase performance, especially for small fills/blits,
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because the driver does not have to poll the ViRGE before sending it
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commands to make sure it is ready. It should work on most
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recent PCI chipsets.
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Debug:
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- "ShowCache" Enable or disable viewing offscreen cache memory. A
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development debug option. Default: off.
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Header: //Mercury/Projects/archives/XFree86/4.0/README.-arc 1.2 14 Sep 2000 12:28:36 Frido $
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$XFree86: xc/programs/Xserver/hw/xfree86/drivers/siliconmotion/README,v 1.3 2001/02/15 18:20:33 dawes Exp $
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