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Hi @xarray ,

Just cloned the repo and noticed that test.xml for osgeffectscompositor.cpp is not present.
https://github.com/xarray/osgRecipes/blob/master/effectcompositor/osgeffectcompositor.cpp#L140

Am I missing something?

Also CMake is not looking in the correct places for finding OSG in 64 linux distributions. I will send a pull request about that.

Thanks!

Hi @xarray ,

We're attempting to use your excellent EffectCompositor snippet in OpenMW, but run into an issue trying to chain multiple effects together. I couldn't find any example of how to this (or if it's even supported), and my naive attempt of creating a hierarchy of effect nodes didn't work (only the last effect renders). Is this supposed to work or are we missing a feature? Any idea on how this would best be achieved? Here are some more details on what I tried: https://forum.openmw.org/viewtopic.php?f=6&t=4425&sid=c723cd8f0daf76d23e76dc14906a83e8#p48178
Another idea would be to write some code to "merge" two compositor definitions into one, but that doesn't seem trivial.

Thanks!

Hi Rui,

I tried to make the effectcompositor work by running those examples (colorgrading.xml, ssao.xml, etc.) However, when I enabled both --shadowed argument and (pe)ssao.xml, the scene just freezed in the first frame, without producing useful debugging information.

I just used the default file osgeffectcompositor.cpp to run the examples without changing any other settings. I tried on both GTX580 and intel HD4400 (with both windows 8.1 and mac os 10 on HD4400) with osg 3.2.1 and 3.2.2 release build. Both of them exposed the same issue.

Linking osg::Program "SSAO_Combining" id=7 contextID=0
    Uniform "sceneTex" loc=0 size=1 type=sampler2D
    Uniform "viewportHeight" loc=1 size=1 type=float
    Uniform "aoTex" loc=2 size=1 type=sampler2D
    Uniform "viewportWidth" loc=3 size=1 type=float
    Attrib "gl_Vertex" loc=0 size=1
    Attrib "gl_MultiTexCoord0" loc=1 size=1

Setting up osg::Camera::FRAME_BUFFER
Created new 0x1022c4dd0 TextureObject, _numOfTextureObjects 1
glGetString(GL_RENDERER)==Intel HD Graphics 4400 OpenGL Engine
end draw() 0x102217280
draw() 0x102217280

The debugging info just stops here. The osgviewer is freezed but not crashed. But it is not responding to any events, like ESC.
Note that if I run the program without --shadowed, the ssao works fine.

Thank you for your time.

Robin

In NurbsSurface and CloudBlock , the function computeBound is redefined. But with the current OSG's master brach, the build process ends in an error:

error: invalid covariant return type for 'virtual osg::BoundingBox NurbsSurface::computeBound() const'
error: overriding 'virtual osg::BoundingSphere osg::Drawable::computeBound() cost'

It seems that now Drawable has two functions for computing the bounds. The old computeBound now returns a BoundingSphere, whereas the one returning a BoundingBox is now named computeBoundingBox. Even though master isn't a stable release, I think the changes will remain for future releases.

Modifying the source code for NurbsSurface and changing computeBound to computeBoundingBox let me continue with the build.

I can make a pull request with the changes if you want. :)

You switched out two parameters the wrong way.

https://github.com/xarray/osgRecipes/blob/master/integrations/osgdb_physfs/ReaderWriterPhysFS.cpp#L90

PHYSFS_read( handle, &(buffer[0]), filesize, 1 ); should be 1, filesize (no joke)

Other than that, the code was outstanding, small and effective. This vfs tutorial that also uses physfs is too long and complicated. Yours is succinct and near perfect.

Code: https://github.com/Eyescale/Equalizer/tree/master/examples/osgScaleViewer

Overview: http://www.equalizergraphics.com/applications/osgScaleViewer.html

Hello.

I have only one node in scene, but i have applied shaders to it using

osg::StateSet* stateset = model_node->getOrCreateStateSet();
stateset->setAttributeAndModes( program, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );

It seems that the ant tweak bar window appears with a lot of problems (black / white and the labels cannot be distinguished).

Is it tested if there are shaders applied to the scene ?

thank you for your time.

Hi Array:
i want to integrate openGL code inside OSG., and i have read you cookbook ,in the book you said there are few ways to do this.As we know,we can usd osg::Drawable callback,and you also said we can use setUpViewInWIndow method and get graphicContex ,actually i tried use the third way .but it not work at all! can you help me do this.i really don't know how to solve this problem.
Look forward your message
thanks.

First of all, great work!
I want to integrate Spark particle. However, the link related ( http://spark.developpez.com/ ) doesn't work. I have downloaded version 1.5.5 from http://sourceforge.net/projects/sparkengine/ , but it has link errors. I am using Visual Studio 2010. I tried with 2008 libraries, and recompiling with VS2010, but no success.
How can I integrate it with OSG? Thanks!

Hello. Thank you very much for your previous answers.

I closed by mistake the previous thread.

So if i create a Drawble, which calls TwDraw() and add this drawable (using a geometry) to the scene graph, will it be ok ?

Do i have to create manually the shaders which will render the tweak bar ?
Or does the TwDraw() takes care of it manually ?

thnx.

Hello.

I try to use AntTweakBar along with Opengl core.
So i call TwInit( TW_OPENGL_CORE, NULL );

The problem is that i get some errors:
Cannot load function glBlendColor
Cannot load function glBlendEquation
and many more core functions.

I had to use the following:
fprintf(stderr, "AntTweakBar: Cannot load function %s\n", g_OGLCoreFuncRec[i].m_Name);
in function: int LoadOpenGLCore()

What can i do for AntTweakBar to see these functions ?

Thank you for your time.

Hello,I'm trying to embed OSG into web browsers according to the cookbook,and I can register the plugin successfully,but the browser(IE ,FireFox) always breaks down .Anybody can help me?

are you try If you input an orthographic projection, i can't find some way to solve it.