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VOODOO(4x)							    VOODOO(4x)

NAME
       voodoo -	Voodoo video driver

SYNOPSIS
       Section "Device"
	 Identifier "devname"
	 Driver	"voodoo"
	 ...
       EndSection

DESCRIPTION
       voodoo  is  an  Xorg  driver  for  Voodoo  1  and Voodoo	2 series video
       adapters.  On the Voodoo	1 the driver uses a shadow  buffer  in	system
       memory as the video adapter has only 3D acceleration. Selected portions
       of the shadow framebuffer are copied out	to the	Voodoo	board  at  the
       right  time. Because of this, the speed of the driver is	very dependent
       on the CPU. Processors nowadays are actually rather fast	at moving data
       so we get very good speed anyway	as the shadow framebuffer is in	cached
       RAM.

       The Voodoo2 has 16bpp acceleration and the driver provides  accelerated
       versions	 of most operations except angled lines	and stipples. Acceler-
       ated alpha blending with	the Render extension is	also supported	as  is
       DGA.

       This driver supports 16bpp modes	currently. The video hardware supports
       image conversion	from 24bpp to 16bpp but	the hardware is	16bpp only.

       The Voodoo 1 series cards can go	up to  800x600	resolution  while  the
       Voodoo 2	can reach 1024x768 providing it	has at least 2Mb of frame buf-
       fer memory. 1024x768 2D mode does not require two cards	configured  in
       scan-line interleave mode (SLI).

       Multihead and Xinerama configurations are supported. SLI	configurations
       will be treated as multiple video cards.

       Limited support for DPMS	screen saving is available. The	"standby"  and
       "suspend"  modes	 are  just  painting  the screen black.	The "off" mode
       turns the Voodoo	board off and thus works correctly.

       This driver does	not support a virtual screen size different  from  the
       display	size.  This is a hardware limitation. 3D rendering is also not
       supported.

CONFIGURATION DETAILS
       Please refer to xorg.conf(5) for	general	configuration  details.	  This
       section only covers configuration details specific to this driver.

       The following driver Options are	supported:

       Option "ShadowFB" "boolean"
	      Enables a	shadow buffer in main memory. This turns off accelera-
	      tion but for otherwise unaccelerated operations can improve per-
	      formance materially.  Default: off for voodoo2, on for voodoo1.

       Option "NoAccel"	"boolean"
	      Disables	acceleration  if  set.	Unless	debugging  this	option
	      should only be set if ShadowFB is	 enabled.   Default:  off  for
	      voodoo2, on for voodoo1.

BUGS
       The  driver interacts badly with	the sstfb frame	buffer driver as there
       is insufficient information to restore the chip to its previous state.

SEE ALSO
       Xorg(1),	xorg.conf(5), Xserver(1), X(7)

AUTHORS
       Authors:	Alan Cox, Ghozlane Toumi, Henrik Harmsen.

X Version 11		    xf86-video-voodoo 1.2.5		    VOODOO(4x)

NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION DETAILS | BUGS | SEE ALSO | AUTHORS

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