绘制透明纹理

laksmi

#if def_DEBUG
#pragma comment(lib,"osgViewerd.lib")
#pragma comment(lib,"osgDBb.lib")
#pragma comment(lib,"OpenThreadsd.lib")
#pragma comment(lib,"osgd.lib")
#pragma comment(lib,"osgGAd.lib")
#else
#pragma comment(lib,"osgViewer.lib")
#pragma comment(lib,"osgDB.lib")
#pragma comment(lib,"OpenThreads.lib")
#pragma comment(lib,"osg.lib")
#pragma comment(lib,"osgGA.lib")
#endif
#include<osgViewer/Viewer>
#include<osgDB/ReadFile>
#include<osgGA/GUIEventAdapter>
#include<osgViewer/ViewerEventHandlers>
#include<osg/StateSet>
#include<osg/Geode>
#include<osg/ShapeDrawable>
#include<osg/Material>
#include<osg/Image>
#include<osg/Texture2D>
#include<osg/LineWidth>
#include<iostream>
osg::ref_ptr<osg::Geode>CreateBox()
{
        osg::ref_ptr<osg::Geode> geode=new osg::Geode;
        osg::ref_ptr<osg::TessellationHints> hints=new osg::TessellationHints;
        osg::ref_ptr<osg::ShapeDrawable> shape =new osg::ShapeDrawable(new osg::Box(osg::Vec3(0.0,0.0,0.0),1.0,10.0,10.0),hints.get());
        osg::ref_ptr<osg::Material>  material=new osg::Material;
        osg::ref_ptr<osg::Texture2D> texture2D=new osg::Texture2D;
        osg::ref_ptr<osg::Image> image;

        //设置颜色
        shape->setColor(osg::Vec4(0.9,0.5,0.5,0.1));
        //设置精准度
    hints->setDetailRatio(0.5);
        //设置材质
        material->setAmbient(osg::Material::FRONT_AND_BACK,osg::Vec4f(1.0,1.0,1.0,1.0));
        material->setDiffuse(osg::Material::FRONT_AND_BACK,osg::Vec4f(2.0,2.0,2.0,1.0));
        material->setSpecular(osg::Material::FRONT_AND_BACK,osg::Vec4f(1.0,0.0,0.0,1.0));
        material->setShininess(osg::Material::FRONT_AND_BACK,20.0);
        //设置纹理
        image=osgDB::readImageFile("Images/whitemetal_diffuse.jpg");
        if(image.valid())
        {
                texture2D->setImage(image.get());
        }
        //set state
        geode->getOrCreateStateSet()->setAttributeAndModes(material.get(),osg::StateAttribute::ON);
        geode->getOrCreateStateSet()->setMode(GL_BLEND,osg::StateAttribute::ON);
        geode->getOrCreateStateSet()->setMode(GL_DEPTH_TEST,osg::StateAttribute::ON);
        geode->getOrCreateStateSet()->setTextureAttributeAndModes(0,texture2D.get(),osg::StateAttribute::ON);
        geode->addDrawable(shape.get());
        return geode;
}
int main ()
{
        osg::ref_ptr<osgViewer::Viewer> viewer=new osgViewer::Viewer;
        osg::ref_ptr<osg::Group> group=new osg::Group;
        group->addChild(osgDB::readNodeFile("glider.osg"));
        group->addChild( CreateBox());
        viewer->setSceneData(group.get());
        return viewer->run();
}

唐俊_x60up

这个帖子就是答案
http://bbs.osgchina.org/forum.ph ... amp;_dsign=642e6fe9