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From Paul Martz, "The osgocclusionquery example contained some duplicate code that was also in the core OSG occlusion query code. This change removes the need for that."

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This commit is contained in:
Robert Osfield
2007-12-26 22:00:28 +00:00
parent 532d573a06
commit b222d4201c
4 changed files with 21 additions and 64 deletions
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73
examples/osgocclusionquery/osgocclusionquery.cpp
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@@ -63,66 +63,6 @@
// NodeVisitors and utility functions for OcclusionQueryNode
// Create and return a StateSet appropriate for performing an occlusion
// query test (disable lighting, texture mapping, etc). Probably some
// room for improvement here. Could disable shaders, for example.
osg::StateSet*
initOQState()
{
osg::StateSet* state = new osg::StateSet;
// TBD Possible bug, need to allow user to set render bin number.
state->setRenderBinDetails( 9, "RenderBin" );
state->setMode( GL_LIGHTING, osg::StateAttribute::OFF |
osg::StateAttribute::PROTECTED);
state->setTextureMode( 0, GL_TEXTURE_2D, osg::StateAttribute::OFF |
osg::StateAttribute::PROTECTED);
state->setMode( GL_CULL_FACE, osg::StateAttribute::ON |
osg::StateAttribute::PROTECTED);
osg::ColorMask* cm = new osg::ColorMask( false, false, false, false );
state->setAttributeAndModes( cm, osg::StateAttribute::ON |
osg::StateAttribute::PROTECTED);
osg::Depth* d = new osg::Depth( osg::Depth::LEQUAL, 0.f, 1.f, false );
state->setAttributeAndModes( d, osg::StateAttribute::ON |
osg::StateAttribute::PROTECTED);
osg::PolygonMode* pm = new osg::PolygonMode(
osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::FILL );
state->setAttributeAndModes( pm, osg::StateAttribute::ON |
osg::StateAttribute::PROTECTED);
osg::PolygonOffset* po = new osg::PolygonOffset( -1., -1. );
state->setAttributeAndModes( po, osg::StateAttribute::ON |
osg::StateAttribute::PROTECTED);
return state;
}
// Create and return a StateSet for rendering a debug representation of query geometry.
osg::StateSet*
initOQDebugState()
{
osg::StateSet* debugState = new osg::StateSet;
debugState->setMode( GL_LIGHTING, osg::StateAttribute::OFF |
osg::StateAttribute::PROTECTED);
debugState->setTextureMode( 0, GL_TEXTURE_2D, osg::StateAttribute::OFF |
osg::StateAttribute::PROTECTED);
debugState->setMode( GL_CULL_FACE, osg::StateAttribute::ON |
osg::StateAttribute::PROTECTED);
osg::PolygonMode* pm = new osg::PolygonMode(
osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::LINE );
debugState->setAttributeAndModes( pm, osg::StateAttribute::ON |
osg::StateAttribute::PROTECTED);
osg::PolygonOffset* po = new osg::PolygonOffset( -1., -1. );
debugState->setAttributeAndModes( po, osg::StateAttribute::ON |
osg::StateAttribute::PROTECTED);
return debugState;
}
// Use this visitor to insert OcclusionQueryNodes (OQNs) in the
// visited subgraph. Only one OQN will test any particular node
// (no nesting). See also OcclusionQueryNonFlatVisitor.
@@ -320,10 +260,15 @@ OcclusionQueryVisitor::OcclusionQueryVisitor()
_nameIdx( 0 ),
_occluderThreshold( 5000 )
{
// Init StateSet for occlusion query geometry.
_state = initOQState();
// Initialize StateSet for debug geometry
_debugState = initOQDebugState();
// Create a dummy OcclusionQueryNode just so we can get its state.
// We'll then share that state between all OQNs we add to the visited scene graph.
osg::ref_ptr<osg::OcclusionQueryNode> oqn = new osg::OcclusionQueryNode;
osg::StateSet* ss( NULL );
osg::StateSet* ssDebug( NULL );
oqn->getQueryStateSets( ss, ssDebug );
_state = ss;
_debugState = ssDebug;
}
OcclusionQueryVisitor::~OcclusionQueryVisitor()