Hi,
I followed your advice and applied directly the cubemap on the quad using 3D
texture coordinates.
Allow me to ask another question are things are very weird !
I render the scene in the CubeMap
Code:
reflectionMap = new osg::TextureCubeMap;
reflectionMap->setTextureSize( 256, 256 );
reflectionMap->setInternalFormat( GL_RGBA);
camerasRoot = new osg::Group;
for(int i=0;i<6;i++){
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setViewport( 0, 0, 256, 256 );
camera->setClearMask( GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT );
camera->setRenderOrder( osg::Camera::PRE_RENDER );
camera->setRenderTargetImplementation(
osg::Camera::FRAME_BUFFER_OBJECT );
camera->attach( osg::Camera::COLOR_BUFFER, reflectionMap,0,i );
camera->setReferenceFrame( osg::Camera::ABSOLUTE_RF );
camera->addChild( m_sceneroot );
camera->setPreDrawCallback(pre_cam);
camera->setPostDrawCallback(post_cam);
camera->setProjectionMatrixAsPerspective(90.0,1.0,1.0,1000000.0);
camerasRoot->addChild(camera);
cameras.push_back(camera);
}
Then this CubeMap is used twice per cycle.
First on a object, via shaders.
Second on two quads,displayed by a HUD camera (in order to see what is in the
map).
On the object, a still image is displayed corresponding to a render from a
previous execution of the application !
On the quads, this image is blended with the correct texture being rendered.
Each time I restart the application, a image of the previous execution is used.
It is sort of confusing.
Thank you!
Cheers,
Gaëtan[/code]
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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=54516#54516
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