IRIX and Software

color depth help

opcode
Who joined Oct. 27, 2006, 9:35 a.m.
and authored 61 notes

Wrote the following at Dec. 9, 2012, 11:33 a.m...

Hey guys,

I never really got down and dirty with all of the settings/memory calculations for the graphics stuff. I have a v12 card/dcd that I have connected to two Dell 2407wfp monitors. Can the v12 do 24bit color on two 1920x1200 monitors? Any help from you guys would be great. thanks in advance!

It looks like it is using the two resolutions as one screen: dimensions: 3840x1200 pixels (1040x330 millimeters)
My default visual id is 0x20 and it looks like it is set to 8bit:

Code:

default visual id:  0x20

visual:

visual id:    0x20

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

Here is my info:

Code:

nucleon 1# xdpyinfo

name of display:    :0.0

version number:    11.0

vendor string:    Silicon Graphics

vendor release number:    6600

maximum request size:  262140 bytes

motion buffer size:  0

bitmap unit, bit order, padding:    32, MSBFirst, 32

image byte order:    MSBFirst

number of supported pixmap formats:    6

supported pixmap formats:

depth 1, bits_per_pixel 1, scanline_pad 32

depth 8, bits_per_pixel 8, scanline_pad 32

depth 12, bits_per_pixel 16, scanline_pad 32

depth 15, bits_per_pixel 16, scanline_pad 32

depth 24, bits_per_pixel 32, scanline_pad 32

depth 30, bits_per_pixel 32, scanline_pad 32

keycode range:    minimum 15, maximum 149

focus:  window 0x4000006, revert to PointerRoot

number of extensions:    33

Adobe-DPS-Extension

DCShare

DEC-XTRAP

DOUBLE-BUFFER

DPMS

DPSExtension

ESA

Extended-Visual-Information

GLX

LBX

MIT-SHM

MIT-SUNDRY-NONSTANDARD

Multi-Buffering

READDISPLAY

RECORD

ReadDisplay

SCREEN-SAVER

SGI-CONTROLPASSING

SGI-NewMultibuffering

SGI-SCREEN-CAPTURE

SGI-SUNDRY-NONSTANDARD

SGI-VIDEO-CONTROL

SGIFullScreenStereo

SHAPE

SYNC

TOG-CUP

X3D-PEX

XC-APPGROUP

XC-MISC

XInputExtension

XKEYBOARD

XTEST

XVideo

default screen number:    0

number of screens:    1

Code:

screen #0:

dimensions:    3840x1200 pixels (1040x330 millimeters)

resolution:    94x92 dots per inch

depths (6):    1, 8, 12, 15, 24, 30

root window id:    0x48

depth of root window:    8 planes

number of colormaps:    minimum 1, maximum 29

default colormap:    0x45

default number of colormap cells:    256

preallocated pixels:    black 0, white 7

options:    backing-store NO, save-unders NO

largest cursor:    32x32

current input event mask:    0x72003c

ButtonPressMask          ButtonReleaseMask        EnterWindowMask

LeaveWindowMask          StructureNotifyMask      SubstructureRedirectMask

FocusChangeMask          PropertyChangeMask

number of visuals:    37

default visual id:  0x20

visual:

visual id:    0x20

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x21

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x22

class:    StaticColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x7, 0x38, 0xc0

significant bits in color specification:    8 bits

visual:

visual id:    0x23

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x24

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x25

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x26

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x27

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x28

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x29

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x2a

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x2b

class:    PseudoColor

depth:    8 planes

available colormap entries:    256

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x2c

class:    PseudoColor

depth:    12 planes

available colormap entries:    4096

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x2d

class:    PseudoColor

depth:    12 planes

available colormap entries:    4096

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x2e

class:    PseudoColor

depth:    12 planes

available colormap entries:    4096

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x2f

class:    PseudoColor

depth:    12 planes

available colormap entries:    4096

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x30

class:    PseudoColor

depth:    12 planes

available colormap entries:    4096

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x31

class:    PseudoColor

depth:    12 planes

available colormap entries:    4096

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x32

class:    PseudoColor

depth:    12 planes

available colormap entries:    4096

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x33

class:    PseudoColor

depth:    12 planes

available colormap entries:    4096

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x34

class:    PseudoColor

depth:    12 planes

available colormap entries:    4096

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x35

class:    PseudoColor

depth:    12 planes

available colormap entries:    4096

red, green, blue masks:    0x0, 0x0, 0x0

significant bits in color specification:    8 bits

visual:

visual id:    0x36

class:    TrueColor

depth:    12 planes

available colormap entries:    16 per subfield

red, green, blue masks:    0xf, 0xf0, 0xf00

significant bits in color specification:    8 bits

visual:

visual id:    0x37

class:    TrueColor

depth:    12 planes

available colormap entries:    16 per subfield

red, green, blue masks:    0xf, 0xf0, 0xf00

significant bits in color specification:    8 bits

visual:

visual id:    0x38

class:    TrueColor

depth:    12 planes

available colormap entries:    16 per subfield

red, green, blue masks:    0xf, 0xf0, 0xf00

significant bits in color specification:    8 bits

visual:

visual id:    0x39

class:    TrueColor

depth:    15 planes

available colormap entries:    32 per subfield

red, green, blue masks:    0x1f, 0x3e0, 0x7c00

significant bits in color specification:    8 bits

visual:

visual id:    0x3a

class:    TrueColor

depth:    15 planes

available colormap entries:    32 per subfield

red, green, blue masks:    0x1f, 0x3e0, 0x7c00

significant bits in color specification:    8 bits

visual:

visual id:    0x3b

class:    TrueColor

depth:    15 planes

available colormap entries:    32 per subfield

red, green, blue masks:    0x1f, 0x3e0, 0x7c00

significant bits in color specification:    8 bits

visual:

visual id:    0x3c

class:    TrueColor

depth:    24 planes

available colormap entries:    256 per subfield

red, green, blue masks:    0xff, 0xff00, 0xff0000

significant bits in color specification:    8 bits

visual:

visual id:    0x3d

class:    TrueColor

depth:    24 planes

available colormap entries:    256 per subfield

red, green, blue masks:    0xff, 0xff00, 0xff0000

significant bits in color specification:    8 bits

visual:

visual id:    0x3e

class:    TrueColor

depth:    24 planes

available colormap entries:    256 per subfield

red, green, blue masks:    0xff, 0xff00, 0xff0000

significant bits in color specification:    8 bits

visual:

visual id:    0x3f

class:    DirectColor

depth:    24 planes

available colormap entries:    256 per subfield

red, green, blue masks:    0xff, 0xff00, 0xff0000

significant bits in color specification:    8 bits

visual:

visual id:    0x40

class:    TrueColor

depth:    30 planes

available colormap entries:    1024 per subfield

red, green, blue masks:    0x3ff, 0xffc00, 0x3ff00000

significant bits in color specification:    10 bits

visual:

visual id:    0x41

class:    TrueColor

depth:    30 planes

available colormap entries:    1024 per subfield

red, green, blue masks:    0x3ff, 0xffc00, 0x3ff00000

significant bits in color specification:    10 bits

visual:

visual id:    0x42

class:    TrueColor

depth:    30 planes

available colormap entries:    1024 per subfield

red, green, blue masks:    0x3ff, 0xffc00, 0x3ff00000

significant bits in color specification:    10 bits

visual:

visual id:    0x43

class:    TrueColor

depth:    30 planes

available colormap entries:    1024 per subfield

red, green, blue masks:    0x3ff, 0xffc00, 0x3ff00000

significant bits in color specification:    10 bits

visual:

visual id:    0x44

class:    TrueColor

depth:    30 planes

available colormap entries:    1024 per subfield

red, green, blue masks:    0x3ff, 0xffc00, 0x3ff00000

significant bits in color specification:    10 bits

nucleon 2#

Code:

nucleon 2# cat /var/X11/xdm/Xservers

:0 secure /usr/bin/X11/X -bs -nobitscale -c -class TrueColor -depth 24

-solidroot sgilightblue -cursorFG red -cursorBG white

Code:

nucleon 8# ./gfxinfo

Graphics board 0 is "ODYSSEY" graphics.

Managed (":0.0") 3840x1200

BUZZ version B.2

PB&J version 1

128MB memory

Banks: 4, CAS latency: 3

Monitor 0 type: Unknown

Dual Channel Display option

Monitor 1 type: DEL -24553      Monitor 2 type: DEL -24553

Channel 0:

Origin = (0,0)

Video Output: 1920 pixels, 1200 lines, 60.00Hz (2@1920x1200_60p)

Channel 1:

Origin = (1920,0)

Video Output: 1920 pixels, 1200 lines, 60.00Hz (2@1920x1200_60p)

_________________
:Tezro:

Stolen!

opcode
Who joined Oct. 27, 2006, 9:35 a.m.
and authored 61 notes

Wrote the following at Dec. 9, 2012, 12:03 p.m...

Nevermind. I thought logging in and out would cause X to pick up the changes. I finally rebooted the system and it picked up the changes and is showing 24bit.

_________________
:Tezro:

Stolen!

canavan
Who joined July 21, 2003, 5:19 a.m.
and authored 642 notes

Wrote the following at Dec. 9, 2012, 1:52 p.m...

Code:

/usr/gfx/stopgfx; /usr/gfx/startgfx

would have done the trick as well, I think. Otherwise, restarting xdm with /etc/init.d/xdm (start/stop) would definitively help.

opcode
Who joined Oct. 27, 2006, 9:35 a.m.
and authored 61 notes

Wrote the following at Dec. 9, 2012, 4:41 p.m...

thanks Canavan. I will keep those in mind when building out my next box. I am trying to get 5 systems up and running again after years of cold storage with fresh installs.

_________________
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Stolen!

duck
Who joined Oct. 27, 2003, 5:22 p.m.
and authored 344 notes

Wrote the following at Dec. 9, 2012, 7:55 p.m...

Xsgi is funny because it runs the root window at 8 bit, but you are able to request truecolor for new windows; see how it supports a long list of visuals--on XFree or Xorg this was to my knowledge always one and the highest depth available, thus pretty much every single FOSS X11-ware thinks that whatever it gets by default (or inherited from the root window) is the highest possible depth, while in reality it could just have requested 30 bit color and got it.

Still, it is nicer with trueocolor desktop backgrounds :-)

_________________
:Octane:

halo , oct ane
N.B.: I tend to talk out of my ass. Do not take it too seriously.

robespierre
Who joined Sept. 12, 2011, 1:28 p.m.
and authored 254 notes

Wrote the following at Dec. 11, 2012, 2:35 p.m...

It has to do with WID planes... graphics workstations (from Sun, HP, SGI, and IBM at least) usually had the ability to use a different color depth, colormap, or double-buffering mode for each window including the root. They have hardware (either dedicated bitplanes for window ID, or a window mode display list) to change the interpretation of the framebuffer when the DAC enters its region. Something similar was possible on old home computers like the Atari 800 and the Amiga.
Some more details at http://linas.org/linux/graphics.html

_________________
:PI:

vishnu
Who joined March 18, 2007, 2:25 p.m.
and authored 826 notes

Wrote the following at Dec. 19, 2012, 11:57 a.m...

From the "X Windows Disaster" chapter of the Unix Hater's Manual: "X Windows is to graphics hacking as roman numerals are to the square root of pi."

Eric Foster-Johnson wrote the definitive article, "High-Definition X Color," for the November 1999 issue of Unix Review magazine (to which I was a lifelong subscriber until it was unceremoniously canceled by it's publisher), I think it's still readable here: http://web.archive.org/web/20010509002125/www.unixreview.com/articles/1999/9911/9911ct/ct.htm

I can't check if the link is valid because I'm at my place of employ, where the web filter inexplicably blocks archive.org... :evil:

hamei
Who joined Feb. 24, 2004, 4:10 p.m.
and authored 8194 notes

Wrote the following at Dec. 19, 2012, 8:17 p.m...

vishnu wrote:

I can't check if the link is valid because I'm at my place of employ, where the web filter inexplicably blocks archive.org... :evil:

archive.org probably hurt the feelings of the military-industrial complex

smj
Who joined Nov. 12, 2007, 7:54 p.m.
and authored 864 notes

Wrote the following at Dec. 19, 2012, 9:06 p.m...

vishnu wrote:

I can't check if the link is valid because I'm at my place of employ, where the web filter inexplicably blocks archive.org... :evil:

Well archive.org managed to keep the correct link to a banner ad for SysAdmin magazine, which as far as I know also met an unhappy end about 5 years ago.

You get the text - a little tough to navigate, but the important part is that the content seems to be there.

Thanks for the pointer!

_________________
Then? :IRIS3130:

... Now?

+MLA

... Other: DEC :BA213:

Sun , DG AViiON , NeXT :Cube:

robespierre
Who joined Sept. 12, 2011, 1:28 p.m.
and authored 254 notes

Wrote the following at Dec. 19, 2012, 9:28 p.m...

please don't use code as gross as that article though. ((65535 * (long) v)/256) isn't even correct and is perverse compared to a bit shifting operation.

_________________
:PI:

smj
Who joined Nov. 12, 2007, 7:54 p.m.
and authored 864 notes

Wrote the following at Dec. 19, 2012, 9:50 p.m...

Heh - well at this point, I've noticed that docs on X aren't so easy to come by. Grateful for TechPubs, to be sure, but time was you'd walk through some offices and there'd be a few copies of the whole O'Reilly stack of X Window System books sitting out abandoned. Now, not so much... That's all I was getting at, I haven't read through the article yet.

_________________
Then? :IRIS3130:

... Now?

+MLA

... Other: DEC :BA213:

Sun , DG AViiON , NeXT :Cube:

vishnu
Who joined March 18, 2007, 2:25 p.m.
and authored 826 notes

Wrote the following at Dec. 20, 2012, 1:04 p.m...

hamei wrote:

vishnu wrote:

I can't check if the link is valid because I'm at my place of employ, where the web filter inexplicably blocks archive.org... :evil:

archive.org probably hurt the feelings of the military-industrial complex

The black helicopters are circling their data center even as we speak... :twisted: