FGFS-4.1/OpenSceneGraph
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Added --shader saderfilename command line option to enable one to manually specify which shaders to use for the uber program.

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This commit is contained in:
Robert Osfield
2018-03-15 16:49:58 +00:00
parent 0308dfecf5
commit add6b3edee
1 changed files with 22 additions and 3 deletions
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25
examples/osgshadergen/osgshadergen.cpp
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@@ -112,7 +112,13 @@ int main(int argc, char** argv)
// add the screen capture handler
viewer.addEventHandler(new osgViewer::ScreenCaptureHandler);
osg::ref_ptr<osg::Program> uberProgram = new osg::Program;
std::string shaderFilename;
while(arguments.read("--shader", shaderFilename))
{
osg::ref_ptr<osg::Shader> shader = osgDB::readShaderFile(shaderFilename);
if (shader.valid()) uberProgram->addShader(shader.get());
}
std::string outputFilename;
if (arguments.read("-o", outputFilename)) {}
@@ -125,10 +131,23 @@ int main(int argc, char** argv)
return 1;
}
osg::ref_ptr<osg::StateSet> rootStateSet = viewer.getCamera()->getStateSet();
// run the shadergen on the loaded scene graph, and assign the uber shader
osgUtil::ShaderGenVisitor shadergen;
shadergen.assignUberProgram(viewer.getCamera()->getStateSet());
//shadergen.assignUberProgram(loadedModel->getOrCreateStateSet());
if (uberProgram->getNumShaders()>0)
{
rootStateSet->setAttribute(uberProgram.get());
rootStateSet->addUniform(new osg::Uniform("diffuseMap", 0));
shadergen.remapStateSet(rootStateSet.get());
}
else
{
shadergen.assignUberProgram(rootStateSet.get());
}
loadedModel->accept(shadergen);
if (!outputFilename.empty())