osg 放大镜 shader fbo

#include "gl/glut.h" #include "gl/GL.h" #include "osg/Geode" #include "osg/Geometry" #include "osg/Texture2D" #include "osgDB/ReadFile" #include "osgViewer/Viewer" #include "osg/Drawable" #include "osgViewer/Viewer" #include "osg/RenderInfo" #include "osg/StateSet" #include "osg/StateAttribute" #include "osg/TexEnv" #include "osg/StateSet" #include "osg/Matrix" #include "osg/TexGen" #include "osg/ShapeDrawable" #include "osg/PositionAttitudeTransform" #include "osg/Camera" #include <Windows.h> #include "osgGA/GUIEventAdapter" #include "osgGA/GUIEventHandler" #include "osg/NodeCallback" #include "osg/Matrixtransform" #include "osg/Shader" #include "osg/Program" static int g_mouse_x=0.0,g_mouse_y=0.0; static float g_move_x=0.0,g_move_y=0.0; static float times=5.0f; float cameratimes=16.0f; const static GLfloat red_color[]={1.0f,0.0f,0.0f,0.5f}; const static GLfloat green_color[]={0.0f,1.0f,0.0f,0.5f}; const static GLfloat blue_color[]={0.0f,0.0f,1.0f,0.5f}; //shader float g_radisX = 0.2f; float g_radisXX=0.6f; void setMaterial(const GLfloat mat_diffuse[4],GLfloat mat_shininess) { static const GLfloat mat_specular[]={0.0f,0.0f,0.0f,1.0f}; static const GLfloat mat_emission[]={0.0f,0.0f,0.0f,1.0f}; glMaterialfv(GL_FRONT,GL_AMBIENT_AND_DIFFUSE,mat_diffuse); glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular); glMaterialfv(GL_FRONT,GL_EMISSION,mat_emission); glMaterialf(GL_FRONT,GL_SHININESS,mat_shininess); } class Teapot:public osg::Drawable { public: Teapot(){} Teapot(const Teapot& T,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY): osg::Drawable(T,copyop) {} META_Object(osg,Teapot) virtual void drawImplementation(osg::RenderInfo & renderInfo) const { //glColor3f(1.0f,0.0f,0.0f); //glEnable(GL_BLEND); //glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA); //glDepthMask(GL_FALSE); setMaterial(red_color,30.0f); //glTranslatef(-2.5f,0.0f,0.0f); glutSolidTeapot(0.3f); } // protected: // virtual ~Teapot(); }; osg::Geode* createTeapot() { osg::Geode* geode=new osg::Geode; osg::Texture2D* KLN89FaceTexture=new osg::Texture2D; KLN89FaceTexture->setDataVariance(osg::Object::DYNAMIC); osg::Image* klnFace=osgDB::readImageFile("C:\\Users\\HIVE\\Desktop\\ground.bmp"); if (!klnFace) { std::cout<<"couldn't find texture,quiting."<<std::endl; exit(0); } KLN89FaceTexture->setImage(klnFace); //blend osg::StateSet* blendStateSet=new osg::StateSet(); osg::TexEnv* blendTexEnv=new osg::TexEnv(); blendTexEnv->setMode(osg::TexEnv::REPLACE); blendStateSet->setTextureAttributeAndModes(0,KLN89FaceTexture,osg::StateAttribute::ON); blendStateSet->setTextureAttribute(0,blendTexEnv); geode->addDrawable(new Teapot()); //geode->setStateSet(blendStateSet); return geode; } osg::Geode* createMagnify() { osg::Geometry* geom=new osg::Geometry; osg::Vec3Array* vv=new osg::Vec3Array; geom->setVertexArray(vv); vv->push_back(osg::Vec3(-0.5f,-0.2f,-0.5f)); vv->push_back(osg::Vec3(0.5f,-0.2f,-0.5f)); vv->push_back(osg::Vec3(0.5f,-0.2f,0.5f)); vv->push_back(osg::Vec3(-0.5f,-0.2f,0.5f)); geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::QUADS,0,4)); osg::Geode* geod=new osg::Geode; geod->addDrawable(geom); osg::Texture2D* KLN89FaceTexture=new osg::Texture2D; KLN89FaceTexture->setDataVariance(osg::Object::DYNAMIC); osg::Image* klnFace=osgDB::readImageFile("C:\\Users\\HIVE\\Desktop\\X.bmp"); if (!klnFace) { std::cout<<"couldn't find texture,quiting."<<std::endl; exit(0); } KLN89FaceTexture->setImage(klnFace); //blend osg::StateSet* blendStateSet=new osg::StateSet(); osg::TexEnv* blendTexEnv=new osg::TexEnv(); blendTexEnv->setMode(osg::TexEnv::DECAL); blendStateSet->setTextureAttributeAndModes(0,KLN89FaceTexture,osg::StateAttribute::ON); blendStateSet->setTextureAttribute(0,blendTexEnv); osg::Vec2Array* texcoords=new osg::Vec2Array; texcoords->push_back(osg::Vec2(0.0f,0.0f)); texcoords->push_back(osg::Vec2(1.0f,0.0f)); texcoords->push_back(osg::Vec2(1.0f,1.0f)); texcoords->push_back(osg::Vec2(0.0f,1.0f)); geom->setTexCoordArray(0,texcoords); //geom->setTexCoordArray(1,texcoords); geod->setStateSet(blendStateSet); //geod->setStateSet(stateSet1); return geod; } osg::Texture* createRttTexture(int texWidth,int texHeight) { osg::Texture2D* texture=new osg::Texture2D; texture->setInternalFormat(GL_RGBA); texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR); texture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR); texture->setTextureSize(texWidth,texHeight); return texture; } osg::Camera* createRttCamera(int texWidth,int texHeight) { osg::Camera* rttCamera=new osg::Camera; rttCamera->setClearColor(osg::Vec4(0.0f,0.3f,0.3f,1.0f)); rttCamera->setClearMask(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); rttCamera->setReferenceFrame(osg::Transform::ABSOLUTE_RF); rttCamera->setViewport(0,0,256,256); rttCamera->setRenderOrder(osg::Camera::PRE_RENDER); rttCamera->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT); rttCamera->setProjectionMatrixAsPerspective(times,1.0f,1.0f,100.0f); osg::Vec3d upDirect(0.0f,0.0f,1.0f); osg::Vec3d center(g_move_x,0.0f,g_move_y); osg::Vec3d viewDirect(g_move_x,-3.0f,g_move_y); rttCamera->setViewMatrixAsLookAt(viewDirect,center,upDirect); return rttCamera; } class Pickhandler:public osgGA::GUIEventHandler { public: Pickhandler() { g_rotate=false; temp_x=0; temp_y=0; } bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa) { osgViewer::Viewer* viewer= dynamic_cast<osgViewer::Viewer*>(&aa); if(!viewer) return false; switch(ea.getEventType()) { case osgGA::GUIEventAdapter::MOVE: { g_move_x =2.5*ea.getXnormalized(); g_move_y =2.5*ea.getYnormalized(); return false; } case osgGA::GUIEventAdapter::DRAG: { g_mouse_x=(g_mouse_x+(int)(ea.getX()-temp_x))%360; g_mouse_y=(g_mouse_y+(int)(ea.getY()-temp_y))%360; temp_x=ea.getX(); temp_y=ea.getY(); } case osgGA::GUIEventAdapter::PUSH: { temp_x=ea.getX(); temp_y=ea.getY(); } } return true; } private: bool g_rotate; float temp_x; float temp_y; }; class CSpaceShipCallback : public osg::NodeCallback { public: CSpaceShipCallback():m_Angle(0){} virtual void operator()(osg::Node* node, osg::NodeVisitor* nv) { osg::ref_ptr<osg::MatrixTransform> pMT = dynamic_cast<osg::MatrixTransform*>(node); osg::Matrix Matrix; Matrix.makeTranslate(g_move_x,0.0f,g_move_y); pMT->setMatrix(Matrix); traverse(node, nv); } private: double m_Angle; }; class CTeapotCallback : public osg::NodeCallback { public: CTeapotCallback():m_Angle(0){} virtual void operator()(osg::Node* node, osg::NodeVisitor* nv) { osg::ref_ptr<osg::MatrixTransform> pMT = dynamic_cast<osg::MatrixTransform*>(node); osg::Matrix Matrix1,Matrix2; Matrix1.makeRotate((float)g_mouse_x/10,osg::Vec3(-1.0f,0.0f,0.0f)); Matrix2.makeRotate((float)g_mouse_y/10,osg::Vec3(0.0f,0.0f,-1.0f)); pMT->setMatrix(Matrix2*Matrix1); traverse(node, nv); } private: double m_Angle; }; // class PosXCallback:public osg::Uniform::Callback // { // public: // PosXCallback(); // virtual void operator() (osg::Uniform* uniform, osg::NodeVisitor* nv) // { // if(!uniform) return; // uniform->set(g_move_x); // } // }; // class PosYCallback:public osg::Uniform::Callback // { // public: // PosYCallback(); // virtual void operator() (osg::Uniform* uniform,osg::NodeVisitor* nv) // { // if(!uniform) return; // uniform->set(g_move_y); // // } // }; void createShaders(osg::StateSet& ss) { osg::Shader* vertShader=new osg::Shader(osg::Shader::VERTEX); vertShader->loadShaderSourceFromFile("Shaders//vp.glsl"); osg::Shader* fragShader=new osg::S