FGFS-4.1/OpenSceneGraph
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Added simple textured scene graph test accessible using --texture or -t command line options.

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This commit is contained in:
Robert Osfield
2009-11-06 16:51:38 +00:00
parent 4163f15052
commit aa2bb575c4
1 changed files with 65 additions and 0 deletions
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65
examples/osgvertexattributes/osgvertexattributes.cpp
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@@ -323,6 +323,67 @@ osg::Node* createSimpleTestModel()
return group;
}
osg::Node* createSimpleTextureTestModel()
{
osg::Group* group = new osg::Group;
osg::Geode* geode = new osg::Geode;
group->addChild(geode);
osg::Geometry* geometry = new osg::Geometry;
geode->addDrawable(geometry);
osg::Vec3Array* vertices = new osg::Vec3Array;
vertices->push_back(osg::Vec3(0.0,0.0,0.0));
vertices->push_back(osg::Vec3(0.0,0.0,1.0));
vertices->push_back(osg::Vec3(1.0,0.0,0.0));
vertices->push_back(osg::Vec3(1.0,0.0,1.0));
geometry->setVertexArray(vertices);
osg::Vec2Array* texcoords = new osg::Vec2Array;
texcoords->push_back(osg::Vec2(0.0,0.0));
texcoords->push_back(osg::Vec2(0.0,1.0));
texcoords->push_back(osg::Vec2(1.0,0.0));
texcoords->push_back(osg::Vec2(1.0,1.0));
geometry->setTexCoordArray(0, texcoords);
geometry->addPrimitiveSet(new osg::DrawArrays(GL_TRIANGLE_STRIP, 0, 4));
char vertexShaderSource[] =
"varying vec2 texCoord;\n"
"void main(void)\n"
"{\n"
" gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
" texCoord = gl_MultiTexCoord0.xy;\n"
"}\n";
char fragmentShaderSource[] =
"varying vec2 texCoord;\n"
"uniform sampler2D baseTexture;\n"
"void main(void)\n"
"{\n"
" gl_FragColor = texture2D(baseTexture, texCoord); \n"
"}\n";
osg::Program* program = new osg::Program;
program->addShader(new osg::Shader(osg::Shader::VERTEX, vertexShaderSource));
program->addShader(new osg::Shader(osg::Shader::FRAGMENT, fragmentShaderSource));
osg::StateSet* stateset = geometry->getOrCreateStateSet();
stateset->setAttribute(program);
osg::Image* image = osgDB::readImageFile("Images/lz.rgb");
osg::Texture2D* texture = new osg::Texture2D(image);
texture->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
texture->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
stateset->setTextureAttribute(0, texture);
osg::Uniform* baseTextureSampler = new osg::Uniform("baseTexture",0);
stateset->addUniform(baseTextureSampler);
return group;
}
int main(int argc, char *argv[])
{
// use an ArgumentParser object to manage the program arguments.
@@ -341,6 +402,10 @@ int main(int argc, char *argv[])
{
loadedModel = createSimpleTestModel();
}
else if (arguments.read("--texture") || arguments.read("-t"))
{
loadedModel = createSimpleTextureTestModel();
}
else
{
bool runShaderGen = true;