[info-performer] Can't get an overlay visual on an Onyx 4.

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From: Glenn Meyer (grmeyer++at++mail.arc.nasa.gov)
Date: 05/10/2005 18:32:10

I have an Onyx4 UltimateVision IRIX 6.5.27 system running with 4 CPUs
and two ATI FireGL graphics cards. I have been unable to acquire an
overlay visual in Performer, and, on checking into the matter further,
have found that the XF86 server was not giving me an overlay, as
indicated by this entry in the XFree86 log file:

(==) fglrx(0): Overlay disabled
(==) fglrx(0): Overlay disabled

 .
 .
 .
 
(==) fglrx(1): Overlay disabled
(==) fglrx(1): Overlay disabled

I am running the system with two ATI X2 Fire GL 128 Mb cards, where each
card is configured as a dual-channeled pipe with 1280x1024 RGB color and
a 24-bit depth buffer (in the XF86Config-4 file):

Section "Device"
    Identifier "SGI SG-0"
    Driver "fglrx"
    BusId "PCI:6:0:0"
# === Screen Management ===
    Option "DesktopSetup" "0x00000200"
    Option "MonitorLayout" "AUTO, AUTO"
    Option "NoDDC" "On"

and where per-window multi-sampling, for anti-aliasing in Performer, is
turned on:

# === FSAA Management ===
    Option "FSAAScale" "1"
    Option "FSAADisableGamma" "no"
    Option "FSAACustomizeMSPos" "yes"
    Option "FSAAMSPosX0" "0.250000"
    Option "FSAAMSPosY0" "0.416666"
    Option "FSAAMSPosX1" "0.083333"
    Option "FSAAMSPosY1" "0.083333"
    Option "FSAAMSPosX2" "0.416666"
    Option "FSAAMSPosY2" "0.750000"
    Option "FSAAMSPosX3" "0.750000"
    Option "FSAAMSPosY3" "0.916666"
    Option "FSAAMSPosX4" "0.583333"
    Option "FSAAMSPosY4" "0.250000"
    Option "FSAAMSPosX5" "0.916666"
    Option "FSAAMSPosY5" "0.583333"

The overlay is requested in each device with the entry

# === OpenGL Overlay ===
    Option "OpenGLOverlay" "On"

Has anyone run into a similar problem with overlays?

Thanks.

Glenn

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