Asus AGP-V5200, Руководство пользователя

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28 ASUS AGP-V5200
Known Anomalies and Restrictions
OpenGL
• On some machines, the use of AGP DMA with the ASUS AGP-V5200 may
cause a crash when trying to run OpenGL applications. This problem is under
investigation. AGP DMA can be disabled by setting the registry variable
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\glint\Device0\
GlintDMA.UseAGP
to 0.
• A mode change after running MultiGen Creator Version 2.0 for the first time
can hang the system and/or corrupt title bar text. This problem is still under
investigation.
• The slow redraws of the texture palette in MultiGen Creator Version 2.0 on ac-
celerated hardware is an application issue for which MultiGen will release a fix.
• When a constantly updating OpenGL application is running (such as the X29
or rollercoaster demos) screensavers run very slowly. This appears to be a
problem with the task priority allocated to the screensaver process.
• When using the glaux library supplied by Microsoft, specifying that you require
alpha planes in the visual is not satisfied by requesting a visual type of
AUX_RGBA as opposed to AUX_RGB when calling auxInitDisplayMode(type) .
In these instances, the hardware accelerated visual that will be returned in
some modes may not have alpha planes. This is because the display driver
exports visuals without alpha planes before those that do. This problem can
be resolved in two ways: First, if you have the source code, then when speci-
fying the visual type, you can OR in
AUX_ALPHA
, along with
AUX_RGB
(for
Example auxInitDisplayMode(AUX_RGB | AUX_ALPHA) ). Secondly, if source
is not available, the following registry variable can be set to 1, which enables
the visuals with alpha planes to be selected first.
3DExtensions.ExportAlpha
in:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\glint\Device0
Setting this variable will result in a decrease in the performance of some appli-
cations as the driver must perform additional setup calculations for the graph-
ics chip to cater for the Alpha value as well as R, G, and B.