int main(int argc, char **argv)
{
// OSG init
osgInit(argc,argv);
// Set up Window
TutorialWindowEventProducer = createDefaultWindowEventProducer();
WindowPtr MainWindow = TutorialWindowEventProducer->initWindow();
TutorialWindowEventProducer->setDisplayCallback(display);
TutorialWindowEventProducer->setReshapeCallback(reshape);
TutorialUpdateListener TheUpdateListener;
TutorialWindowEventProducer->addUpdateListener(&TheUpdateListener);
TutorialKeyListener TheKeyListener;
TutorialWindowEventProducer->addKeyListener(&TheKeyListener);
// Create the SimpleSceneManager helper
mgr = new SimpleSceneManager;
// Tell the Manager what to manage
mgr->setWindow(MainWindow);
// Make Main Scene Node and add the Torus
NodePtr scene = osg::Node::create();
beginEditCP(scene, Node::CoreFieldMask | Node::ChildrenFieldMask);
scene->setCore(osg::Group::create());
endEditCP(scene, Node::CoreFieldMask | Node::ChildrenFieldMask);
//Create a FBO Source
FBOSourceTextureFilterPtr TutorialFBOSourceTextureFilter = FBOSourceTextureFilter::create();
beginEditCP(TutorialFBOSourceTextureFilter, FBOSourceTextureFilter::FBOFieldMask | FBOSourceTextureFilter::FBOSizeFieldMask);
TutorialFBOSourceTextureFilter->setFBO(createSceneFBO());
TutorialFBOSourceTextureFilter->setFBOSize(Vec2f(-1.0,-1.0));
endEditCP(TutorialFBOSourceTextureFilter, FBOSourceTextureFilter::FBOFieldMask | FBOSourceTextureFilter::FBOSizeFieldMask);
//Create a HDR filter
std::string HDRFragProg = "";
HDRFragProg +=
"uniform sampler2D Slot0Texture;"
"uniform float Exposure;"
"uniform float MaxLuminance;"
"uniform float Gamma;"
"void main()"
"{"
" vec3 Color = texture2D(Slot0Texture,gl_TexCoord[0].st).rgb;"
//" float Intensity = dot(vec3(0.3,0.59,0.11),Color);"
" float TonePercent = Exposure * ((Exposure/MaxLuminance + 1.0)/(Exposure + 1.0));"
//Apply Tone Mapping And Gamma Correction
" Color = pow(Color * TonePercent, vec3(Gamma));"
" gl_FragColor = vec4(Color, 1.0);"
"}";
//Create a shader Filter
HDRTextureFilter = ShaderTextureFilter::create();
HDRTextureFilter->attachSource(TutorialFBOSourceTextureFilter, 0, 0);
HDRTextureFilter->setFragmentSource(HDRFragProg);
HDRTextureFilter->setUniformParameter("Exposure", Exposure);
HDRTextureFilter->setUniformParameter("MaxLuminance", MaxLuminance);
HDRTextureFilter->setUniformParameter("Gamma", Gamma);
// Create the ImageProcessed Foreground Object
ImageProcessedForegroundPtr TutorialImageProcessedForeground = ImageProcessedForeground::create();
beginEditCP(TutorialImageProcessedForeground, ImageProcessedForeground::FilterFieldMask | ImageProcessedForeground::OutputSlotFieldMask);
TutorialImageProcessedForeground->setFilter(HDRTextureFilter);
TutorialImageProcessedForeground->setOutputSlot(0);
endEditCP(TutorialImageProcessedForeground, ImageProcessedForeground::FilterFieldMask | ImageProcessedForeground::OutputSlotFieldMask);
mgr->setRoot(scene);
// Add the ImageProcessed Foreground Object to the Scene
ViewportPtr TutorialViewport = mgr->getWindow()->getPort(0);
beginEditCP(TutorialViewport, Viewport::ForegroundsFieldMask);
TutorialViewport->getForegrounds().push_back(TutorialImageProcessedForeground);
beginEditCP(TutorialViewport, Viewport::ForegroundsFieldMask);
// Show the whole Scene
mgr->showAll();
//Open Window
Vec2f WinSize(TutorialWindowEventProducer->getDesktopSize() * 0.85f);
Pnt2f WinPos((TutorialWindowEventProducer->getDesktopSize() - WinSize) *0.5);
TutorialWindowEventProducer->openWindow(WinPos,
WinSize,
"03ScenePostProcessing");
//Enter main Loop
TutorialWindowEventProducer->mainLoop();
osgExit();
return 0;
}
virtual void keyPressed(const KeyEventPtr e)
{
if(e->getKey() == KeyEvent::KEY_Q && e->getModifiers() & KeyEvent::KEY_MODIFIER_CONTROL)
{
TutorialWindowEventProducer->closeWindow();
}
switch(e->getKey())
{
case KeyEvent::KEY_UP:
{
Color4f Col(TheLight->getDiffuse());
Col += Color4f(0.2,0.2,0.2,0.0);
std::cout << "Diffuse Color : " << Col << std::endl;
beginEditCP(TheLight);
TheLight->setAmbient(Col*0.1);
TheLight->setDiffuse(Col);
TheLight->setSpecular(Col);
endEditCP(TheLight);
MaxLuminance = Col.red();
std::cout << "MaxLuminance : " << MaxLuminance << std::endl;
HDRTextureFilter->setUniformParameter("MaxLuminance", MaxLuminance);
}
break;
case KeyEvent::KEY_DOWN:
{
Color4f Col(TheLight->getDiffuse());
Col -= Color4f(0.2,0.2,0.2,0.0);
std::cout << "Diffuse Color : " << Col << std::endl;
beginEditCP(TheLight);
TheLight->setDiffuse(Col);
endEditCP(TheLight);
MaxLuminance = Col.red() + 1.0f;
std::cout << "MaxLuminance : " << MaxLuminance << std::endl;
HDRTextureFilter->setUniformParameter("MaxLuminance", MaxLuminance);
}
break;
case KeyEvent::KEY_RIGHT:
{
Exposure += 0.1f;
std::cout << "Exposure : " << Exposure << std::endl;
HDRTextureFilter->setUniformParameter("Exposure", Exposure);
}
break;
case KeyEvent::KEY_LEFT:
{
Exposure -= 0.1f;
std::cout << "Exposure : " << Exposure << std::endl;
HDRTextureFilter->setUniformParameter("Exposure", Exposure);
}
break;
case KeyEvent::KEY_8:
{
Gamma += 0.05f;
std::cout << "Gamma : " << Gamma << std::endl;
HDRTextureFilter->setUniformParameter("Gamma", Gamma);
}
break;
case KeyEvent::KEY_7:
{
Gamma -= 0.05f;
std::cout << "Gamma : " << Gamma << std::endl;
HDRTextureFilter->setUniformParameter("Gamma", Gamma);
}
break;
}
}
int main(int argc, char **argv)
{
// OSG init
osgInit(argc,argv);
// Set up Window
TutorialWindowEventProducer = createDefaultWindowEventProducer();
WindowPtr MainWindow = TutorialWindowEventProducer->initWindow();
TutorialWindowEventProducer->setDisplayCallback(display);
TutorialWindowEventProducer->setReshapeCallback(reshape);
TutorialKeyListener TheKeyListener;
TutorialWindowEventProducer->addKeyListener(&TheKeyListener);
// Create the SimpleSceneManager helper
mgr = new SimpleSceneManager;
// Tell the Manager what to manage
mgr->setWindow(MainWindow);
// Make Torus Node (creates Torus in background of scene)
NodePtr TorusGeometryNode = makeTorus(.5, 2, 16, 16);
// Make Main Scene Node and add the Torus
NodePtr scene = osg::Node::create();
beginEditCP(scene, Node::CoreFieldMask | Node::ChildrenFieldMask);
scene->setCore(osg::Group::create());
scene->addChild(TorusGeometryNode);
endEditCP(scene, Node::CoreFieldMask | Node::ChildrenFieldMask);
//Create the Image
Path ImagePath("./Data/TutorialImage.jpg");
ImagePtr TheImage = ImageFileHandler::the().read(ImagePath.string().c_str());
//Create the texture
TextureChunkPtr TheTextureChunk = TextureChunk::create();
beginEditCP(TheTextureChunk);
TheTextureChunk->setImage(TheImage);
TheTextureChunk->setMinFilter(GL_NEAREST);
TheTextureChunk->setMagFilter(GL_NEAREST);
TheTextureChunk->setWrapS(GL_CLAMP_TO_EDGE);
TheTextureChunk->setWrapR(GL_CLAMP_TO_EDGE);
TheTextureChunk->setScale(false);
TheTextureChunk->setNPOTMatrixScale(true);
TheTextureChunk->setEnvMode(GL_REPLACE);
endEditCP(TheTextureChunk);
//Create a Texture Source
TextureSourceTextureFilterPtr TutorialTextureSourceTextureFilter = TextureSourceTextureFilter::create();
beginEditCP(TutorialTextureSourceTextureFilter, TextureSourceTextureFilter::TextureFieldMask);
TutorialTextureSourceTextureFilter->setTexture(TheTextureChunk);
endEditCP(TutorialTextureSourceTextureFilter, TextureSourceTextureFilter::TextureFieldMask);
//Create a Grayscale filter
std::string GrayScaleFragProg = "uniform sampler2D Slot0Texture; void main() { gl_FragColor = vec4(vec3( dot(vec3(0.3,0.59,0.11), texture2D(Slot0Texture,gl_TexCoord[0].st).rgb)), 1.0); }";
//Create a shader Filter
ShaderTextureFilterPtr GrayscaleTextureFilter = ShaderTextureFilter::create();
GrayscaleTextureFilter->attachSource(TutorialTextureSourceTextureFilter, 0, 0);
GrayscaleTextureFilter->setFragmentSource(GrayScaleFragProg);
//Create a Color Mult filter
std::string ColorMultFragProg = "uniform sampler2D Slot0Texture; void main() { gl_FragColor = vec4(vec3(1.0,0.0,0.0) * texture2D(Slot0Texture,gl_TexCoord[0].st).rgb, 1.0); }";
//Create a shader Filter
ShaderTextureFilterPtr ColorMultTextureFilter = ShaderTextureFilter::create();
ColorMultTextureFilter->attachSource(GrayscaleTextureFilter,0,0);
ColorMultTextureFilter->setFragmentSource(ColorMultFragProg);
////Create a Blur filter
//std::string BlurFragProg = "";
//BlurFragProg +=
//"uniform sampler2D Slot0Texture;"
//"void main()"
//"{"
//" vec2 offsets[9];"
//" offsets[0] = vec2(-0.000625,0.00111111111);"
//" offsets[1] = vec2(0.0,0.00111111111);"
//" offsets[2] = vec2(0.000625,0.00111111111);"
//" offsets[3] = vec2(-0.000625,0.0);"
//" offsets[4] = vec2(0.0,0.0);"
//" offsets[5] = vec2(0.0,0.0);"
//" offsets[6] = vec2(-0.000625,-0.00111111111);"
//" offsets[7] = vec2(0.0,-0.00111111111);"
//" offsets[8] = vec2(0.000625,-0.00111111111);"
//" vec4 kernel[9];"
////" kernel[0] = vec4(0.0);"
////" kernel[1] = vec4(0.0);"
////" kernel[2] = vec4(0.0);"
////" kernel[3] = vec4(0.0);"
////" kernel[4] = vec4(1.0);"
////" kernel[5] = vec4(0.0);"
////" kernel[6] = vec4(0.0);"
////" kernel[7] = vec4(0.0);"
////" kernel[8] = vec4(0.0);"
//" kernel[0] = vec4(0.0);"
//" kernel[1] = vec4(0.15);"
//" kernel[2] = vec4(0.0);"
//" kernel[3] = vec4(0.15);"
//" kernel[4] = vec4(0.4);"
//" kernel[5] = vec4(0.15);"
//" kernel[6] = vec4(0.0);"
//" kernel[7] = vec4(0.15);"
//" kernel[8] = vec4(0.0);"
//" vec4 sum = vec4(0.0);"
//" int i;"
//" for(i = 0 ; i < 9 ; i++)"
//" {"
//" sum += kernel[i] * texture2D(Slot0Texture,gl_TexCoord[0].st + offsets[i]);"
//" }"
//" gl_FragColor = sum;"
//"}";
////Create a shader Filter
//ShaderTextureFilterPtr BlurTextureFilter = ShaderTextureFilter::create();
//BlurTextureFilter->attachSource(ColorMultTextureFilter);
//BlurTextureFilter->setFragmentSource(BlurFragProg);
// Create the ImageProcessed Foreground Object
ImageProcessedForegroundPtr TutorialImageProcessedForeground = ImageProcessedForeground::create();
beginEditCP(TutorialImageProcessedForeground, ImageProcessedForeground::FilterFieldMask | ImageProcessedForeground::OutputSlotFieldMask);
TutorialImageProcessedForeground->setFilter(ColorMultTextureFilter);
TutorialImageProcessedForeground->setOutputSlot(0);
endEditCP(TutorialImageProcessedForeground, ImageProcessedForeground::FilterFieldMask | ImageProcessedForeground::OutputSlotFieldMask);
mgr->setRoot(scene);
// Add the ImageProcessed Foreground Object to the Scene
ViewportPtr TutorialViewport = mgr->getWindow()->getPort(0);
beginEditCP(TutorialViewport, Viewport::ForegroundsFieldMask);
TutorialViewport->getForegrounds().push_back(TutorialImageProcessedForeground);
beginEditCP(TutorialViewport, Viewport::ForegroundsFieldMask);
// Show the whole Scene
mgr->showAll();
//Open Window
Vec2f WinSize(TutorialWindowEventProducer->getDesktopSize() * 0.85f);
Pnt2f WinPos((TutorialWindowEventProducer->getDesktopSize() - WinSize) *0.5);
TutorialWindowEventProducer->openWindow(WinPos,
WinSize,
"02SimpleImagePipeline");
//Enter main Loop
TutorialWindowEventProducer->mainLoop();
osgExit();
return 0;
}
