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IV. UTILITIES & DRIVERS
Registry Variables
Enable Multiple 4096 Double-Buffered Windows
When in 4096 colour mode, there can only be one double buffered OpenGL win-
dow. This check-box allows multiple double buffered windows to coexist in this
mode simultaneously, which can be useful for particular applications. Note though
that any buffer swap operation will cause a buffer swap to happen for all other double
buffered windows.
Export PFD_SUPPORT_GDI modes
These two check-boxes control whether the PFD_SUPPORT_GDI flags are ex-
ported for single buffered and double buffered pixel formats. The check boxes alter
the registry variables:
Export High Resolution, Single Buffered Formats
When this box is checked, it will enable the driver to boot at resolutions where only
single buffered pixel formats are supported by GLINT acceleration (because at higher
resolutions, there is not enough VRAM to support double buffered formats). By
default, this is not enabled and it prevents users from booting into a mode that will
result in unaccelerated OpenGL applications that use double buffered modes.
SoftImage Version 3.01 Application support
Version 3.01 of SoftImage requires this to be set to ensure the correct operation of
SoftImage on the 3DP-V500 TX board. This option requires a reboot to take effect.
SoftImage Version 3.51 Application support
This box need to be checked to correctly run Softimage version 3.51. The option is
mutually exclusive with support for version 3.01 which will be disabled when this is
selected. This option requires a reboot to take effect.
Use BIOS PCI base addresses
Normally, the NT HAL allocated PCI base addresses for the GLINT card. These
override those which are normally supplied by the PCI BIOS. On some machine
configurations these addresses are not valid for the given hardware. In these in-
stances, the base addresses originally configured by the BIOS are often valid and
allow the machine to boot. Setting this variable to 1 causes the BIOS base addresses
to be used rather than those configured by NT.
In particular, on machines which use the Intel Multi Processor Specification 1.4
(MPS 1.4), there is a bug in the NT HAL for many machines which causes invalid
base addresses to be configured. Setting this variable may fix this problem.
Boot-Time Buffer size Options
These boxes can be used to specify the size (in Kb) of a DMA buffer along with the
number of DMA buffers allocated at boot time. Ideally, you would like enough DMA
buffers to cater for all of the OpenGL contexts, however each of these buffers will
use up system memory. For more information, see the notes on the
GlintDMA.NumberOfBuffers and GlintDMA.SizeOfBuffer registry variables.
10
3DExtensions.SupportSingle
3DExtensions.SupportDouble
ASUS 3DP-V500TX
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