FGFS-4.1/OpenSceneGraph
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Updates to osgprerender to support use of rendering to an image, rather then

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just a texture.
This commit is contained in:
Robert Osfield
2002-07-10 13:33:25 +00:00
parent 7f56ceaea1
commit b3ac26f3dc
6 changed files with 146 additions and 18 deletions
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22
src/Demos/osgprerender/osgprerender.cpp
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@@ -31,12 +31,16 @@ class MyCullCallback : public osg::NodeCallback
MyCullCallback(osg::Node* subgraph,osg::Texture* texture):
_subgraph(subgraph),
_texture(texture) {}
MyCullCallback(osg::Node* subgraph,osg::Image* image):
_subgraph(subgraph),
_image(image) {}
virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
{
osgUtil::CullVisitor* cullVisitor = dynamic_cast<osgUtil::CullVisitor*>(nv);
if (cullVisitor && _texture.valid() && _subgraph.valid())
if (cullVisitor && (_texture.valid()|| _image.valid()) && _subgraph.valid())
{
doPreRender(*node,*cullVisitor);
@@ -55,6 +59,7 @@ class MyCullCallback : public osg::NodeCallback
osg::ref_ptr<osg::Node> _subgraph;
osg::ref_ptr<osg::Texture> _texture;
osg::ref_ptr<osg::Image> _image;
};
@@ -277,8 +282,11 @@ void MyCullCallback::doPreRender(osg::Node& node, osgUtil::CullVisitor& cv)
// dependancy list.
cv.getCurrentRenderBin()->_stage->addToDependencyList(rtts.get());
// attach texture to the RenderToTextureStage.
rtts->setTexture(_texture.get());
// if one exist attach texture to the RenderToTextureStage.
if (_texture.valid()) rtts->setTexture(_texture.get());
// if one exist attach image to the RenderToTextureStage.
if (_image.valid()) rtts->setImage(_image.get());
}
@@ -333,7 +341,12 @@ osg::Node* createPreRenderSubGraph(osg::Node* subgraph)
osg::StateSet* stateset = new osg::StateSet;
// set up the texture.
osg::Image* image = new osg::Image;
image->setInternalTextureFormat(GL_RGBA);
//osg::Image* image = osgDB::readImageFile("lz.rgb");
osg::Texture* texture = new osg::Texture;
texture->setSubloadMode(osg::Texture::IF_DIRTY);
texture->setImage(image);
stateset->setTextureAttributeAndModes(0, texture,osg::StateAttribute::ON);
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OVERRIDE_OFF);
@@ -346,7 +359,8 @@ osg::Node* createPreRenderSubGraph(osg::Node* subgraph)
billboard->addDrawable(polyGeom,bs.center());
osg::Group* parent = new osg::Group;
parent->setCullCallback(new MyCullCallback(subgraph,texture));
// parent->setCullCallback(new MyCullCallback(subgraph,texture));
parent->setCullCallback(new MyCullCallback(subgraph,image));
parent->addChild(billboard);
return parent;