int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName() + " demonstrates the use of multiple render targets (MRT) with frame buffer objects (FBOs). A render to texture (RTT) camera is used to render to four textures using a single shader. The four textures are then combined to texture the viewed geometry.");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] ...");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information.");
arguments.getApplicationUsage()->addCommandLineOption("--width","Set the width of the render to texture.");
arguments.getApplicationUsage()->addCommandLineOption("--height","Set the height of the render to texture.");
arguments.getApplicationUsage()->addCommandLineOption("--image","Render one of the targets to an image, then apply a post draw callback to modify it and use this image to update the final texture. Print some texture values when using HDR.");
arguments.getApplicationUsage()->addCommandLineOption("--hdr","Use high dynamic range (HDR). Create floating point textures to render to.");
// construct the viewer.
osgViewer::Viewer viewer(arguments);
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
unsigned tex_width = 512;
unsigned tex_height = 512;
while (arguments.read("--width", tex_width)) {}
while (arguments.read("--height", tex_height)) {}
bool useHDR = false;
while (arguments.read("--hdr")) { useHDR = true; }
bool useImage = false;
while (arguments.read("--image")) { useImage = true; }
bool useMultiSample = false;
while (arguments.read("--ms")) { useMultiSample = true; }
osg::Group* subGraph = createRTTQuad(tex_width, tex_height, useHDR);
osg::Group* rootNode = new osg::Group();
rootNode->addChild(createScene(subGraph, tex_width, tex_height, useHDR, useImage, useMultiSample));
// add model to the viewer.
viewer.setSceneData( rootNode );
return viewer.run();
}
int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
//
// // set up the usage document, in case we need to print out how to use this program.
// arguments.getApplicationUsage()->setDescription(arguments.getApplicationName() + " demonstrates the use of multiple render targets (MRT) with frame buffer objects (FBOs). A render to texture (RTT) camera is used to render to four textures using a single shader. The four textures are then combined to texture the viewed geometry.");
// arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] ...");
// arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information.");
// arguments.getApplicationUsage()->addCommandLineOption("--width","Set the width of the render to texture.");
// arguments.getApplicationUsage()->addCommandLineOption("--height","Set the height of the render to texture.");
// arguments.getApplicationUsage()->addCommandLineOption("--image","Render one of the targets to an image, then apply a post draw callback to modify it and use this image to update the final texture. Print some texture values when using HDR.");
// arguments.getApplicationUsage()->addCommandLineOption("--hdr","Use high dynamic range (HDR). Create floating point textures to render to.");
// construct the viewer.
osgViewer::Viewer viewer(arguments);
osg::GraphicsContext::Traits *pTraits = new osg::GraphicsContext::Traits;
pTraits->x = 100;
pTraits->y = 100;
pTraits->width = 1024;
pTraits->height = 768;
pTraits->windowName = "Hive Application";
pTraits->windowDecoration = true;
pTraits->doubleBuffer = true;
osg::GraphicsContext* pGraphicsContext = osg::GraphicsContext::createGraphicsContext(pTraits);
osg::Camera *pCamera = new osg::Camera;
pCamera->setGraphicsContext(pGraphicsContext);
pCamera->setViewport(new osg::Viewport(0, 0, pTraits->width, pTraits->height));
pCamera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
pCamera->setClearColor(osg::Vec4f(0.2f, 0.2f, 0.4f, 1.0f));
pCamera->setProjectionMatrixAsPerspective(45, (float)pTraits->width/pTraits->height, 0.1, 100);
viewer.setCamera(pCamera);
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
unsigned tex_width = 512;
unsigned tex_height = 512;
// while (arguments.read("--width", tex_width)) {}
// while (arguments.read("--height", tex_height)) {}
bool useHDR = false;
// while (arguments.read("--hdr")) { useHDR = true; }
bool useImage = false;
// while (arguments.read("--image")) { useImage = true; }
bool useMultiSample = false;
// while (arguments.read("--ms")) { useMultiSample = true; }
osg::Group* subGraph = createRTTQuad(tex_width, tex_height, useHDR);
osg::Group* rootNode = new osg::Group();
rootNode->addChild(createScene(subGraph, tex_width, tex_height, useHDR, useImage, useMultiSample));
// add model to the viewer.
viewer.setSceneData( rootNode );
return viewer.run();
}
