20000607: Color Allocation

Patrick,

From your xdpyinfo shown below:

>  default visual id:  0x22
>  visual:
>    visual id:    0x22
>    class:    TrueColor


That means that your default visual is a 24 bit TrueColor display.
Gempak requires an 8 bit pseudocolor default display.

You can have other TrueColor viuals on the system, but the
default must be 8 bit.

The Xsun session configuration is generally configured in
/etc/dt/config/Xservers. This might be a line to either
Xservers.24bit or Xservers.8bit


In the Xservers file, you should have a line for starting your :0 screen which
generally for 8 bits looks something like:

 :0   Local local_uid@console root /usr/openwin/bin/Xsun :0 -nobanner -dev 
/dev/fbs/ffb0

whereas 24 bit would have:

:0   Local local_uid@console root /usr/openwin/bin/Xsun :0 -nobanner -dev 
/dev/fbs/ffb0 defdepth 24


The -dev option for Xsun supports the defdepth option:

     -dev filename
             This option specifies the name  of  the  framebuffer
             device file to be used instead of the default frame-
             buffer /dev/fb.  Multiple instances of  this  option
             indicate multiple screens on the same server.  After
             each -dev option a list  of  modifiers  changes  the
             behavior of the named device.

             [ left | right | top | bottom ]
                  Specify the position of a given screen in rela-
                  tion  to  the previous one on the command line.
                  The default right.

             dpix n
                  The dpi in the x direction for this  screen  is
                  n.  The default is 90.

             dpiy n
                  The dpi in the y direction for this  screen  is
                  n.  The default is 90.

             defclass [ GrayScale | StaticGray | PseudoColor |
                  StaticColor | DirectColor | TrueColor ] Use the
                  specified  visual  as  the default visual.  The
                  default is device dependent.

             defdepth n
                  A visual of depth n is the default visual.  The
                  default is device dependent.



You should be able to specify defclass PseudoColor or defdepth  8
if the default for your hardward is not 8 bits.

Steve Chiswell
Unidata User Support

>From: "Patrick S. Market" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200006072030.e57KUAT06982

>
>Hello.
>
>I am writing because I can't seem to resolve a conflict over colors 
>on our system.  We have a Sun Ultra60 that is presently running 
>GEMPAK just fine.  In March, we added on 4 Sun Ultra 5s, but only now
>have I gotten around to getting them to access the binaries, etc., from
>the U60 (we have no system support here).  when I run gempak on the U5s,
>I get the response (in this case from running ntl):
>
>>  =>graphic, satellite, radar -- 33 35 16
>>         Request total # of colors = 84
>>  X Error of failed request:  BadValue (integer parameter out of range 
>>   for operation)
>>    Major opcode of failed request:  86 (X_AllocColorCells)
>>    Value in failed request:  0x0
>>    Serial number of failed request:  219
>>    Current serial number in output stream:  219
>>  
>>  [1]    Exit 1               /asp/met/nawips/bin/sol/ntl -s 35
>
>I have been aware of this potential problem for a few years now, and
>have been to the GEMPAK e-mail archives already in search of an answer.
>I know that the standard response is to "have your sysadmin change
>the settings to 8-bit color", but from my read of the xdpyinfo 
>output appended below, the U5 (running Solaris 2.7, btw) accounts for
>this.
>
>Can you help this neophyte system babysitter?
>
>Thanks.
>
>pat
>
>::::::::
>xdpyinfo
>::::::::
>
>
>name of display:    :0.0
>version number:    11.0
>vendor string:    Sun Microsystems, Inc.
>vendor release number:    3610
>maximum request size:  262140 bytes
>motion buffer size:  256
>bitmap unit, bit order, padding:    32, MSBFirst, 32
>image byte order:    MSBFirst
>number of supported pixmap formats:    4
>supported pixmap formats:
>    depth 1, bits_per_pixel 1, scanline_pad 32
>    depth 8, bits_per_pixel 8, scanline_pad 32
>    depth 16, bits_per_pixel 16, scanline_pad 32
>    depth 24, bits_per_pixel 32, scanline_pad 32
>keycode range:    minimum 8, maximum 132
>focus:  window 0x4c00009, revert to PointerRoot
>number of extensions:    22
>    AccessX
>    Adobe-DPS-Extension
>    DCShare
>    DOUBLE-BUFFER
>    DPSExtension
>    GLX
>    MIT-SCREEN-SAVER
>    MIT-SHM
>    MIT-SUNDRY-NONSTANDARD
>    Multi-Buffering
>    SHAPE
>    SUN_ALLPLANES
>    SUN_DGA
>    SUN_OVL
>    SUN_SME
>    SYNC
>    SolarisIA
>    XC-MISC
>    XIE
>    XInputDeviceEvents
>    XInputExtension
>    XTEST
>default screen number:    0
>number of screens:    1
>
>screen #0:
>  dimensions:    1152x900 pixels (325x254 millimeters)
>  resolution:    90x90 dots per inch
>  depths (2):    1, 24
>  root window id:    0x25
>  depth of root window:    24 planes
>  number of colormaps:    minimum 1, maximum 1
>  default colormap:    0x21
>  default number of colormap cells:    256
>  preallocated pixels:    black 0, white 16777215
>  options:    backing-store YES, save-unders YES
>  largest cursor:    unlimited
>  current input event mask:    0x38003f
>    KeyPressMask             KeyReleaseMask           ButtonPressMask         
>  
>    ButtonReleaseMask        EnterWindowMask          LeaveWindowMask         
>  
>    SubstructureNotifyMask   SubstructureRedirectMask FocusChangeMask         
>  
>  number of visuals:    1
>  default visual id:  0x22
>  visual:
>    visual id:    0x22
>    class:    TrueColor
>    depth:    24 planes
>    available colormap entries:    256 per subfield
>    red, green, blue masks:    0xff0000, 0xff00, 0xff
>    significant bits in color specification:    8 bits
>
>::::::::
>xdpyinfo
>::::::::
> 
>
>-- 
>========================================================================
>Dr. Patrick S. Market              
>Dept. of Soil & Atmospheric Sciences 
>University of Missouri-Columbia                 Phone:  (573) 882 - 1496  
>203 Gentry Hall                                 Fax:    (573) 884 - 5133 
>Columbia, MO 65211 USA          E-mail: address@hidden
>========================================================================
>