[Paraview-developers] RE: [vtkusers] MangledMesa & VTK

[Wylie, Brian]

Randall,
 
Hmmm..... I'm pretty sure plain old Mesa will work. I think the popping
up of the X window was fixed a while back.
 
I'm poking through the archives and cannot find the confirmation of
this... but we have dozens of clusters without graphics cards running
Mesa pvservers (all servers are running X though...).  
 
Now if the servers don't have X, then I'm not sure about this... maybe
someone who know a bit more about it can chime in?
 
  Brian Wylie - Org 1424
  Sandia National Laboratories
  MS 0822 - Building 880/A1-J
  (505)844-2238 FAX(505)845-0833                      


 


________________________________

	From: Randall Hand [mailto:randall.hand at gmail.com] 
	Sent: Thursday, December 28, 2006 10:33 AM
	To: Wylie, Brian
	Cc: VTK Users
	Subject: Re: [vtkusers] MangledMesa & VTK
	
	
	Well.. Correct me if I'm wrong (/crossfingers hoping i'm wrong)
but I'm trying to get VTk running on systems with no video displays, no
hardware acceleration, and no running x-server.  From what I've
experienced in the past (albeit all this testing was back in the 4.4
days), the only way to get that was with Mangled Mesa.  Mesa would get
visualizations working without hardware acceleration, but still insisted
on popping up windows (if you had X running) to do so.
	
	If I could get my visualizations working (which are all
single-frame, render to PNG type stuff) without mangled mesa I'ld be
happy.  But, in my experience, there's no way to get it working in all
three cases in a completely "invisible" (meaning no visible display)
way. 
	  1) Workstation with GPU card & X running, and you're on the
display
	  2) Remote system with no GPU card and X not running
	  3) Remote system with GPU & X, but you don't own the display
(connecting in remotely via ssh) 
	
	
	
	On 12/28/06, Wylie, Brian <bnwylie at sandia.gov> wrote: 

		All,
		 
		Actually I have two questions...
		 
		1) In what circumstance would anyone want to use
MangledMesa?  (I'm not being a smartly pants, I really don't know.... we
have dozens of deployments at Sandia and we've never used it...
ever....)
		2) If the answer to 1 is some small special case should
the functionality be made available in some other way, and should VTK
depreciate the use of Mangled Mesa altogether?

		  Brian Wylie - Org 1424
		  Sandia National Laboratories
		  MS 0822 - Building 880/A1-J
		  (505)844-2238 FAX(505)845-0833                      
		
		

		 


________________________________

			From:
vtkusers-bounces+bnwylie=sandia.gov at vtk.org
[mailto:vtkusers-bounces+bnwylie=sandia.gov at vtk.org] On Behalf Of
Randall Hand
			Sent: Thursday, December 28, 2006 10:16 AM
			To: VTK Users
			Subject: [vtkusers] MangledMesa & VTK
			
			
			
			I've been using MangledMesa with VTK (5.0.1) for
quite a while now with pretty good success, but I ran into an issue
where I couldn't get vtkTextActor's to display in the resulting displays
at all.
			
			So I upgraded to a newer VTK hoping this was
fixed (Paraview-2-6 branch) and recompiled everything.  Now my resulting
renderings are completely blank.  I did have some issues with getting it
to compile as it seems a few of the files in the Rendering directory
have desynced between the vtkMesa* and vtkOpenGL* versions.  I manually
resynced them (Just had to copy some function definitions in the .h
files over) and it compiled. 
			
			So my question is a 2 parter:
			1) Anyone know how to get TextActors to work
with the 5.0.1 VTK?  Was there a known bug around that time that's been
fixed, or is there some new option that must be enabled to get it to
work? 
			2) How to I get MangledMEsa to work in the newer
VTK releases?  Right now i'm getting either blank or random-garbage
displays.
			
			-- 
			----------------------------------------
			Randall Hand
			Visualization Scientist
			ERDC MSRC-ITL 




	-- 
	----------------------------------------
	Randall Hand
	Visualization Scientist
	ERDC MSRC-ITL 

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