[osg-users] Where is CreateContextAttribs() being used?

[Robert Osfield]

Hi Marlin,

A great for CreateContextttribs in the OSG shows:

$ grep -r CreateContextAttribs .
Binary file ./lib/libosgViewer.so.3.6.4 matches
Binary file
./src/osgViewer/CMakeFiles/osgViewer.dir/GraphicsWindowX11.cpp.o matches
./src/osgViewer/GraphicsWindowX11.cpp:        typedef GLXContext
(*glXCreateContextAttribsARBProc)(Display*, GLXFBConfig, GLXContext, Bool,
const int*);
./src/osgViewer/GraphicsWindowX11.cpp:
glXCreateContextAttribsARBProc glXCreateContextAttribsARB = 0;
./src/osgViewer/GraphicsWindowX11.cpp:
glXCreateContextAttribsARB = (glXCreateContextAttribsARBProc)
glXGetProcAddress((const GLubyte*)"glXCreateContextAttribsARB");
./src/osgViewer/GraphicsWindowX11.cpp:        if
(glXCreateContextAttribsARB)
./src/osgViewer/GraphicsWindowX11.cpp:            _context =
glXCreateContextAttribsARB( _display, _fbConfig, sharedContext, True,
contextAttributes.data() );
./src/osgViewer/GraphicsWindowWin32.cpp:extern HGLRC WINAPI
wglCreateContextAttribsARB (HDC, HGLRC, const int *);
./src/osgViewer/GraphicsWindowWin32.cpp:
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB =
./src/osgViewer/GraphicsWindowWin32.cpp:                (
PFNWGLCREATECONTEXTATTRIBSARBPROC ) wglGetProcAddress(
"wglCreateContextAttribsARB" );
./src/osgViewer/GraphicsWindowWin32.cpp:            if(
wglCreateContextAttribsARB==0 )
./src/osgViewer/GraphicsWindowWin32.cpp:
reportErrorForScreen( "GL3: wglCreateContextAttribsARB not available.",
./src/osgViewer/GraphicsWindowWin32.cpp:                context =
wglCreateContextAttribsARB( _hdc, 0, attribs );
./src/osgViewer/GraphicsWindowWin32.cpp:
reportErrorForScreen( "GL3: wglCreateContextAttribsARB returned NULL.",

So only X11 and Win32.  What platform are you using?

Robert.



On Thu, 11 Apr 2019 at 00:32, Rowley, Marlin R <marlin.r.rowley at lmco.com>
wrote:

> We are trying to run the graphics debugger called ‘RenderDoc’.  It’s
> spitting out an error message after we create a window and it’s device
> context.  I’ve been looking through the osg code to find a function called
> CreateContextAttribs().  I can’t seem to locate it. My idea is to override
> where it’s used or refactor something into the code where we can call the
> function ourselves.
>
>
>
> In the meantime, I’m setting the traits->glContextVersion = “3.3” in our
> graphics application but RenderDoc is still shouting “Context not created
> via CreateContextAttribs.  Capturing disabled.”
>
>
>
> -M
>
>
>
> ----------------------------------------
>
> Marlin Rowley
>
> Software Engineer, Staff
>
> [image: cid:image002.jpg at 01D39374.DEC5A2E0]
>
> *Missiles and Fire Control*
>
> 972-603-1931 (office)
>
> 214-926-0622 (mobile)
>
> marlin.r.rowley at lmco.com
>
>
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>
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