FGFS-4.1/OpenSceneGraph
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Improved the handling of precision

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This commit is contained in:
Robert Osfield 2018-05-14 08:24:02 +01:00
parent 640b03b671
commit 3bbbbd07ea
1 changed files with 4 additions and 4 deletions
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8
src/osg/OcclusionQueryNode.cpp
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@ -494,7 +494,7 @@ bool OcclusionQueryNode::getPassed( const Camera* camera, NodeVisitor& nv )
QueryGeometry* qg = static_cast< QueryGeometry* >( _queryGeode->getDrawable( 0 ) );
// Get the near plane for the upcoming distance calculation.
float nearPlane;
osg::Matrix::value_type nearPlane;
const osg::Matrix& proj( camera->getProjectionMatrix() );
if( ( proj(3,3) != 1. ) || ( proj(2,3) != 0. ) || ( proj(1,3) != 0. ) || ( proj(0,3) != 0.) )
nearPlane = proj(3,2) / (proj(2,2)-1.); // frustum / perspective
@ -505,10 +505,10 @@ bool OcclusionQueryNode::getPassed( const Camera* camera, NodeVisitor& nv )
// the results. Otherwise (near plane inside the BS shell) we are considered
// to have passed and don't need to retrieve the query.
const osg::BoundingSphere& bs = getBound();
float distanceToEyePoint = nv.getDistanceToEyePoint( bs._center, false );
osg::Matrix::value_type distanceToEyePoint = nv.getDistanceToEyePoint( bs._center, false );
float distance = distanceToEyePoint - nearPlane - bs._radius;
_passed = ( distance <= 0.f );
osg::Matrix::value_type distance = distanceToEyePoint - nearPlane - bs._radius;
_passed = ( distance <= 0.0 );
if (!_passed)
{
int result = qg->getNumPixels( camera );