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Added a TextureCallback which cycles through various filter modes, used

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in testing new glTextParamters update functionality.  I have commented out
the call to attaching of the callback so osgtexture outwardly behaves as
before.  The code lies dormant just incase we need to use it for testing
in the future.
This commit is contained in:
Robert Osfield
2002-03-14 16:42:43 +00:00
parent e80496d5db
commit 9e92b9b899
1 changed files with 43 additions and 0 deletions
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43
src/Demos/osgtexture/osgtexture.cpp
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@@ -23,6 +23,47 @@
typedef std::vector< osg::ref_ptr<osg::Image> > ImageList;
class TextureCallback : public osg::NodeCallback
{
public:
TextureCallback(osg::Texture* texture):_texture(texture)
{
_filterRange.push_back(osg::Texture::LINEAR);
_filterRange.push_back(osg::Texture::LINEAR_MIPMAP_LINEAR);
_filterRange.push_back(osg::Texture::LINEAR_MIPMAP_NEAREST);
_filterRange.push_back(osg::Texture::NEAREST);
_filterRange.push_back(osg::Texture::NEAREST_MIPMAP_LINEAR);
_filterRange.push_back(osg::Texture::NEAREST_MIPMAP_NEAREST);
_filterRange.push_back(osg::Texture::ANISOTROPIC);
_currPos = 0;
_prevTime = 0.0;
}
virtual ~TextureCallback() {}
virtual void operator()(osg::Node*, osg::NodeVisitor* nv)
{
if (nv->getFrameStamp())
{
double currTime = nv->getFrameStamp()->getReferenceTime();
if (currTime-_prevTime>1.0)
{
std::cout<<"Updating texturing filter to "<<hex<<_filterRange[_currPos]<<dec<<std::endl;
_texture->setFilter(osg::Texture::MAG_FILTER,_filterRange[_currPos]);
_currPos++;
if (_currPos>=_filterRange.size()) _currPos=0;
_prevTime = currTime;
}
}
}
osg::ref_ptr<osg::Texture> _texture;
std::vector<osg::Texture::FilterMode> _filterRange;
osg::uint _currPos;
double _prevTime;
};
/**
* Function to read several images files (typically one) as specified
* on the command line, and return them in an ImageList
@@ -134,6 +175,8 @@ osg::Node* createLayer(const osg::Vec3& offset,osg::Image* image,osg::Node* geom
top_transform->addChild(createTexturedItem(local_offset,texture,geometry));
local_offset += local_delta;
// top_transform->setAppCallback(new TextureCallback(texture));
}