Re: [Opensg-users] FBOViewportPtr->render() crash on Windows 2003

[Thomas J. P. <thomas@3Djam.com>]

After setting up the debug log I get the below output, when my code call FBOViewportPtr->render() 
 
--------------------  debug log content -------------
 
WARNING:  I need GL_EXT_framebuffer_object-Extension!
INFO:  Window::getFunction: function "glDrawRangeElementsEXT" is NULL!
INFO:  Window::getFunction: function "glTexImage3DEXT" is NULL!
INFO:  Window::getFunction: function "glTexSubImage3DEXT" is NULL!
INFO:  Window::getFunction: function "glCompressedTexImage1DARB" is NULL!
INFO:  Window::getFunction: function "glCompressedTexSubImage1DARB" is NULL!
INFO:  Window::getFunction: function "glCompressedTexImage2DARB" is NULL!
INFO:  Window::getFunction: function "glCompressedTexSubImage2DARB" is NULL!
INFO:  Window::getFunction: function "glCompressedTexImage3DARB" is NULL!
INFO:  Window::getFunction: function "glCompressedTexSubImage3DARB" is NULL!
INFO:  FBOViewport::render: (Re)Allocating image for read-back.
INFO:  Window::getFunction: function "glTexSubImage3DEXT" is NULL!
INFO:  Window::getFunction: function "glCompressedTexSubImage1DARB" is NULL!
INFO:  Window::getFunction: function "glCompressedTexSubImage2DARB" is NULL!
INFO:  Window::getFunction: function "glCompressedTexSubImage3DARB" is NULL!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!
WARNING:  Texture-Creation OpenGL Error: invalid enumerant!

--------------------------------------------   
 
I summarize from the above that the graphics card on the Win2003 server does not support OpenGL. 
And thus my code fails. 
But my application is a dll, which can generate a thumbnail image of a 3D model. I don't want to render it to any display, only render to file. 
 
My new question:
Is it possible to setup OpenSG such that it can render a thumbnail of a 3D model, even on computers where no OpenGL drivers are installed. 
 
Thanks. 

 
________________________________

Fra: ope...@li... på vegne af Carsten Neumann
Sendt: to 10-07-2008 15:47
Til: ope...@li...
Emne: Re: [Opensg-users] FBOViewportPtr->render() crash on Windows 2003



        Hello Thomas,

Thomas Pedersen wrote:
> Hi.
>
> I have a DLL that render an image in the background on windows XP
> without problems. (Tested on several machines)
> But when I try to move it to my Win2003 server (have tried two different
> Win2003 servers) then it hang in the
>
> FBOViewportPtr->render()
>
> function call.
>
> Have any of you seen this problem before?
>
> How can I best debug it. I cannot install the debugger on the server.
> (but I can use MessageBox("some message"))

you can try setting the environment variable OSG_LOG_LEVEL to DEBUG,
maybe that gives some hint on what goes wrong or where it gets stuck.

        Hope it helps,
                Carsten


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