Hi, it's just a really simple scene but it should help you figuring out, if your OpenGLES 2.0 support works (tested on iPhone):
Code: // create geometry osg::Group* scene = new osg::Group; osg::Geode* geode = new osg::Geode; osg::Geometry* geo = new osg::Geometry; scene->addChild(geode); geode->addDrawable(geo); // set vertices 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)); geo->setVertexArray(vertices); // set colors osg::Vec4Array* colors = new osg::Vec4Array; colors->push_back(osg::Vec4(1.0, 0.0, 0.0, 1.0)); colors->push_back(osg::Vec4(0.0, 1.0, 0.0, 1.0)); colors->push_back(osg::Vec4(0.0, 0.0, 1.0, 1.0)); colors->push_back(osg::Vec4(1.0, 0.0, 1.0, 1.0)); geo->setVertexAttribArray(7, colors); geo->setVertexAttribBinding(7, osg::Geometry::BIND_PER_VERTEX); // set primitive set geo->addPrimitiveSet(new osg::DrawArrays(GL_TRIANGLE_STRIP, 0, 4)); geo->setUseVertexBufferObjects(true); // declare shaders char vertSource[] = "attribute vec4 osg_Vertex;\n" "attribute vec4 a_col;" "uniform mat4 osg_ModelViewProjectionMatrix;\n" "varying vec4 v_col;" "void main(void)\n" "{\n" "gl_Position = osg_ModelViewProjectionMatrix * osg_Vertex;\n" "v_col = a_col;\n" "}\n"; char fragSource[] = "precision mediump float;\n" "varying vec4 v_col;" "void main(void)\n" "{\n" "gl_FragColor = v_col;\n" "}\n"; // set shader osg::Program* program = new osg::Program; program->setName( "simple shader" ); program->addShader( new osg::Shader( osg::Shader::VERTEX, vertSource ) ); program->addShader( new osg::Shader( osg::Shader::FRAGMENT, fragSource ) ); program->addBindAttribLocation("a_col", 7); geode->getOrCreateStateSet()->setAttributeAndModes( program, osg::StateAttribute::ON ); // set scene in viewer... HTH, Christian ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=38263#38263 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org