FGFS-4.1/OpenSceneGraph
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Added support for enable VBO's and doing simplification.

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This commit is contained in:
Robert Osfield 2010-10-22 16:35:28 +00:00
parent 89d09d7712
commit 123c0a36c4
1 changed files with 67 additions and 2 deletions
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69
examples/osganalysis/osganalysis.cpp
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@ -19,9 +19,55 @@
#include <osgViewer/Viewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgDB/ReadFile>
#include <osgGA/TrackballManipulator>
#include <osgUtil/IncrementalCompileOperation>
#include <osgUtil/Simplifier>
class StripStateVisitor : public osg::NodeVisitor
{
public:
StripStateVisitor(bool useStateSets, bool useDisplayLists, bool useVBO):
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
_useStateSets(useStateSets),
_useDisplayLists(useDisplayLists),
_useVBO(useVBO) {}
bool _useStateSets;
bool _useDisplayLists;
bool _useVBO;
void apply(osg::Node& node)
{
if (!_useStateSets && node.getStateSet()) node.setStateSet(0);
traverse(node);
}
void apply(osg::Geode& node)
{
if (!_useStateSets && node.getStateSet()) node.setStateSet(0);
for(unsigned int i = 0; i<node.getNumDrawables(); ++i)
{
process(*node.getDrawable(i));
}
traverse(node);
}
void process(osg::Drawable& drawable)
{
if (!_useStateSets && drawable.getStateSet())
{
drawable.setStateSet(0);
}
drawable.setUseDisplayList(_useDisplayLists);
drawable.setUseVertexBufferObjects(_useVBO);
}
};
class SceneGraphProcessor : public osg::Referenced
{
@ -37,11 +83,14 @@ public:
while (arguments.read("--vbo")) { modifyDrawableSettings = true; useVBO = true; }
while (arguments.read("--dl")) { modifyDrawableSettings = true; useDisplayLists = true; }
while (arguments.read("--simplify", simplificatioRatio)) {}
while (arguments.read("-s", simplificatioRatio)) {}
while (arguments.read("--build-mipmaps")) { modifyTextureSettings = true; buildImageMipmaps = true; }
while (arguments.read("--compress")) { modifyTextureSettings = true; compressImages = true; }
while (arguments.read("--disable-mipmaps")) { modifyTextureSettings = true; disableMipmaps = true; }
OSG_NOTICE<<"simplificatioRatio="<<simplificatioRatio<<std::endl;
}
virtual osg::Node* process(osg::Node* node)
@ -54,6 +103,22 @@ public:
OSG_NOTICE<<"SceneGraphProcessor::process("<<node<<") : "<<node->getName()<<std::endl;
if (simplificatioRatio < 1.0)
{
OSG_NOTICE<<"Running simplifier with simplification ratio="<<simplificatioRatio<<std::endl;
float maxError = 4.0f;
osgUtil::Simplifier simplifier(simplificatioRatio, maxError);
node->accept(simplifier);
}
if (modifyDrawableSettings || modifyTextureSettings)
{
OSG_NOTICE<<"Running StripStateVisitor"<<std::endl;
StripStateVisitor ssv(true, useDisplayLists, useVBO);
node->accept(ssv);
}
return node;
}
@ -75,7 +140,7 @@ protected:
bool modifyDrawableSettings;
bool useVBO;
bool useDisplayLists;
bool simplificatioRatio;
float simplificatioRatio;
bool modifyTextureSettings;
bool buildImageMipmaps;