GRASS GIS wrote:
> #104: saving display to tiff or ppm garbled when NVIZ is not top window
> ----------------------+-----------------------------------------------------
> Reporter: dylan | Owner: [email protected]
> Type: defect | Status: new
> Priority: minor | Milestone: 6.4.0
> Component: default | Version: svn-trunk
> Resolution: | Keywords: NVIZ openGL
> ----------------------+-----------------------------------------------------
> Comment (by msieczka):
>
> Replying to [comment:5 glynn]:
>
> > I think I've fixed this; at least, it works on my system.
>
> On my system unless I export GRASS_NO_GLX_PIXMAPS=TRUE, NVIZ crashes at
> saving image as maximum resolution PPM, with the following error:
>
> {{{
> Create PixMap Using GLX 1.1
> X Error of failed request: GLXBadContext
> Major opcode of failed request: 143 (GLX)
> Minor opcode of failed request: 5 (X_GLXMakeCurrent)
> Serial number of failed request: 5128
> Current serial number in output stream: 5128
> }}}
Odd. The glXMakeCurrent manpage says:
GLXBadContext is generated if ctx is not a valid GLX context.
But there don't appear to be any errors regarding the
glXCreateContext() call, and both are created using the same
XVisualInfo structure.
> After exporting GRASS_NO_GLX_PIXMAPS=TRUE all is OK.
Could you debug this?
Once NVIZ is running, get its PID, then:
$ gdb $GISBASE/etc/nviz2.2/nviz
> attach <pid>
> break Create_OS_Ctx
> cont
Selecting the menu option will re-enter the debugger. Single-step
through the function (with "next"), printing out the values of any
variables as they are assigned.
--
Glynn Clements <[EMAIL PROTECTED]>
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