Were these changes ever committed?
-Paul
On 9/13/2012 8:00 AM, David Garcia wrote:
Hi Stephan,
I did the changes in a moment of despair when my not so good OSG developer
forces our app to use OpenGL 3.2. He was able to make it run without using GLSL
1.5 so I stop doing changes (OpenGL is not my speciality). I can look at the
changes and some emails later today to find exactly what I accomplished at the
end (but not too much).
Best regards,
David
On Sep 13, 2012, at 15:51 , Stephan Maximilian Huber wrote:
Hi David, Robert + Paul,
@David, I tried your code on my end and I am getting a lot of OpenGL
errors, too. Did you get it running on your end?
Some of the errors I get (captured with the open gl profiler)
glEnable(GL_LIGHTING) -- GL_INVALID_ENUM
glEnableVertexAttribArray(0) -- GL_INVALID_OPERATION
glVertexAttribPointerARB(0, 3, GL_FLOAT, 0, 0, 0x7fce66003e00) --
GL_INVALID_OPERATION
glDrawArrays(GL_TRIANGLE_STRIP, 0, 3) -- GL_INVALID_OPERATION
So basically all serious open gl commands throw an error :) According to
the OpenGL profiler the context seems correct:
GL_RENDERER: ATI Radeon HD 5770 OpenGL Engine
GL_VENDOR: ATI Technologies Inc.
GL_VERSION: 3.2 ATI-7.18.18
kCGLCPGPUFragmentProcessing: GL_TRUE
kCGLCPGPUVertexProcessing: GL_TRUE
and I get the correct clear-color displaying in the window ;-)
Any idea what might go wrong?
cheers,
Stephan
Am 03.03.12 01:10, schrieb David Garcia:
Hi Robert, Paul,
On Mar 2, 2012, at 16:33 , Robert Osfield <[email protected]
<mailto:[email protected]>
<mailto:[email protected]>> wrote:
Looking at the osgsimplegl3 example it doesn't itself create a Material or
TexGen so I think these inappropriate StateAttribute are part of the scene
graph you are loading. Could it be cow.osg by any chance :-)
Yes, of course :)…
Following Paul advice I try osgWorks (2.0.0) teapot. I got different errors. In
the state I have add to extract more information:
gc->getState()->setCheckForGLErrors(osg::State::ONCE_PER_ATTRIBUTE);
The output is in the zip file (errors.txt).
OpenGL defines CGL functions. I will check later today if it is required.
The include is not required.
I have not be able to found another way to activate it without using this
enum. Rumors are that Mountain Lion will support extra values making the
code uglier. Another solution will be to use the value of the enum
(NSOpenGLPFAOpenGLProfile is 99 and NSOpenGLProfileVersion3_2Core is
0x3200) but seems even less elegant.
Perhaps moving this discussion on to osg-users and try to catch the attention
of other OSX devs to see what they think. I'd like to had a solution that
will handle future revs of OSX and the SDK as well as be backwards compatible.
As the versions seems defined by a enum I cannot see any solution other than
giant IF. And requires an ifdef because the SDK of 10.6 doesn't have the enum
(neither defines NSOpenGLPFAOpenGLProfile).
I coded a different version that mirrors the structure of the Win32 version. The
code now is:
std::istringstream istr( _traits->glContextVersion );
unsigned int major, minor;
unsigned char dot;
istr >> major >> dot >> minor;
if( OSG_GL3_FEATURES ){
if( major < 3 ){
OSG_NOTIFY( osg::WARN ) << "GL3: Non-GL3 version number: " <<
_traits->glContextVersion << std::endl;
}else{
OSG_NOTIFY( osg::INFO ) << "GL3: Attempting to create OpenGL3 context." <<
std::endl;
OSG_NOTIFY( osg::INFO ) << "GL3: version: " << _traits->glContextVersion <<
std::endl;
#if defined(OSG_GL3_AVAILABLE)
attr[i++] = NSOpenGLPFAOpenGLProfile;
attr[i++] = NSOpenGLProfileVersion3_2Core;
#endif
}
}
So, find the new version of GL (no include, correct order for the
define GL3_PROTOTYPES) and code to activate 3.2 if the version requested is 3.0
or higher. As soon as Apple updates Mountain Lion with OpenGL 4.1 support, I can
rewrite the code (but 4.1 support is still a rumor).
Thanks,
David
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