Re: [Chromium-users] Chromium and VNC: remote rendering of desktop

[Dan P. <ph...@cs...>]

Brian Paul wrote:
> Dan B. Phung wrote:
>>
>> Brian Paul wrote:
>>> Dan Phung wrote:
>>>> Hi all,
>>>>
>>>> I'm trying to get the setup where the local (app) node sends its
>>>> rendering data to a remote node to get rendered, and then sent back to
>>>> get displayed.  From what I've read, I should use the VNC SPU.
>>>
>>> Do you want to use VNC?
>>>
>>> Or, are you trying to render back into the original application window?
>> I guess I don't really want to use VNC, but that's what I read as one 
>> way of going about this...
>> but yes, I'm trying to render back to the original application window.
>
> See the render SPU's 'render_to_app_window' option.  I think there's 
> at least one or two sample .conf files that use it.
>
> -Brian
I tried working from the rb.conf example and got something to 
display...but I still don't have a complete understanding of the correct 
way to do this.  For clarity, what I'm trying to accomplish is for the 
local application node to send off the 3d openGL rendering to the server 
node, and having it drawn back locally on the application node. 

Here's my configuration:

----------------
import sys
sys.path.append( '../server' )
from mothership import *

demo = crbindir+"/atlantis -s 100";

server_spu = SPU( 'render' )
client_spu = SPU( 'pack' )
readback_spu = SPU( 'readback' )

server_spu.Conf( 'window_geometry', [0, 0, 512, 192] )
server_spu.Conf( 'title', "server SPU" )
server_spu.Conf( 'swap_master_url', "" )
server_spu.Conf( 'render_to_app_window', 1 )
client_spu.Conf( 'draw_bbox', 1 )

server_node = CRNetworkNode('remote_renderer')
server_node.AddSPU( server_spu )

client_node = CRApplicationNode( )
client_node.AddSPU( readback_spu )
client_node.AddSPU( client_spu )
client_spu.AddServer( server_node, 'tcpip' )

client_node.SetApplication( demo )
client_node.StartDir( crbindir )

cr = CR()
cr.MTU( 1024*1024 )
cr.AddNode( client_node )
cr.AddNode( server_node )
cr.Go()
-----------------

so with the 'render_to_app_window' line in, the crserver gives this warning:
  CR Warning(remote_renderer:30801): Render SPU: render_to_app/crut_window
  option is set but the window ID 0x1c00002 is invalid on the display 
named :0.0.

I had first tried this with the line 'server_spu.Conf( 
'render_to_app_window', 1 )'
commented out (as it is in the example) and it rendered in both the 
server and
application node.  I saw bandwidth usage go up, so that's how I know 
that some
data is coming back from the server...but it looks the same on the 
application
node with or without the render_to_app_window line in/out. 

Lastly, I tried mucking around with the 'window_geometry', but couldn't 
get the
atlantis example to draw correctly.  It seems to be cut in half...

thanks,
dan