|
XFree86.Org, I have been
having an X11 problem with an nVidia board and you
may be my last resort. nVidia doesn't respond to
end-users, Dell is useless, RedHat is not responding
and the XFree86 Bug reporting doesn't work. The problem
is in loading the colormap of a window with an 8-bit
Pseudo transparent visual overlayed on a 24-bit True
color window. The nVidia FX 1000 boards (as well as a
Quadro4 980 XGL) support this capability. The X windows environment has been
setup to enable the 8-bit overlay planes with transparency and the 24-bit true color
"underlay" planes. The capabilitly also
works on select HP and SGI Unix Platforms. i.e. XF86Config: Option
"CIOverlay" True Option
"OverlayDefaultVisual" True A program
has been created which opens two windows, one into the overlay planes and one
into the 24-bit true color planes. The correct visuals are search for, selected
and used to open the respect windows.
The capability seems to exist (supported by the board) since the overlay
window can see through the desktop to the nVidia logo
residing the in the 24-bit true color. The first
problem is that the 8-bit color table will not load new colors (they only
contain black and a few grays). A second
problem exists in that the true color window will not allow the drawing of any
colors at all. I am hoping
for any type of help. Any type of test
program which exercises this capability would be greatly appreciated. I will gladly supply you with my program if
that would be easier. Thank
you very much for your time. Steps to
Reproduce 1. Open the
X display 2. Obtain VisualInfo and select a 24-bit true visual 3. Obtain
Overlay information, match overlay info to visuals and select an 8 bit Pseudo
visual with transparency. 4. Create
color map for overlay window and load some colors. 5. Open an
application shell with the 24-bit true visual 6. Open an
application shell with the 8-bit transparent overlay visual 7. Clear
each window to 0 (in my case 0 is the transparent color) 8. Draw
colored rectangles into each window Actual Results - The
correct visuals are selected. - Both the
24-bit true and 8-bit overlay windows open. - The
overlay window can see through the desktop to the nVidia
logo residing the in the 24-bit true color. - Drawing of
256 (8bits) colored rectangles results in all black with ~4 grays. - Drawing to
the 24-bit window results in a BadMatch error. Expected Results Windows open
as stated above. The overlay
would have 256 colored rectangles representing the colors loaded. The 24-bit
true window would have a pattern of the 16M colors possible via true color
visual. Environment Machine : Intel
i686 3.0Ghz P4 Graphics : nVidia FX 1000 Memory : 1
Gb XFree86 : 4.3.0-2 Linux 9 : 2.4.20-3bigmem Kernel : 2.4.20-8smp Scott D. Carter Naval
Undersea Tel: 401-832-8201 Fax:
401-832-7453 |
