FGFS-4.1/OpenSceneGraph
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Added --shader filename command line parsing and associated set up of osg::Program to allow shaders to be passed into example to customize rendering

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This commit is contained in:
Robert Osfield 2017-08-30 17:43:29 +01:00
parent 81f93e34b8
commit 07a8d082e4
1 changed files with 26 additions and 3 deletions
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29
examples/osgfont/osgfont.cpp
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@ -4,6 +4,7 @@
#include <osg/ArgumentParser>
#include <osg/Geode>
#include <osg/MatrixTransform>
#include <osgDB/ReadFile>
#include <osgDB/WriteFile>
#include <osgViewer/Viewer>
#include <osgViewer/ViewerEventHandlers>
@ -200,6 +201,29 @@ int main(int argc, char** argv)
root = transform;
}
osg::ref_ptr<osg::Program> program = new osg::Program;
std::string shaderFilename;
while(args.read("--shader", shaderFilename))
{
osg::ref_ptr<osg::Shader> shader = osgDB::readRefShaderFile(shaderFilename);
if (shader.get())
{
OSG_NOTICE<<"Loading shader "<<shaderFilename<<std::endl;
program->addShader(shader.get());
}
}
if (program->getNumShaders()>0)
{
OSG_NOTICE<<"Using shaders"<<std::endl;
root->getOrCreateStateSet()->setAttribute(program.get(), osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON);
root->getOrCreateStateSet()->addUniform(new osg::Uniform("glyphTexture", 0));
}
std::string outputFilename;
if (args.read("-o", outputFilename)) {}
if (args.argc() > 1)
{
settings.fontFilename = argv[1];
@ -235,10 +259,9 @@ int main(int argc, char** argv)
root->addChild(geode);
std::string filename;
if (args.read("-o", filename))
if (!outputFilename.empty())
{
osgDB::writeNodeFile(*root, filename);
osgDB::writeNodeFile(*root, outputFilename);
return 0;
}