C# OpenGL.GetUniformLocation方法代码示例

        public override void OnLoad(OpenGL gl)
        {
            gl.Enable(OpenGL.GL_CULL_FACE);
            gl.Enable(OpenGL.GL_DEPTH_TEST);
            gl.Enable(OpenGL.GL_BLEND);
            gl.BlendFunc(BlendingSourceFactor.SourceAlpha, BlendingDestinationFactor.OneMinusSourceAlpha);

            _camera = new OrthographicCamera();
            _camera.View *= Mat4.RotateY(Angle.FromDegrees(15));

            _shader = new BasicShader(gl);
            _modelUniform = gl.GetUniformLocation(_shader.Handle, "Model");
            _viewUniform = gl.GetUniformLocation(_shader.Handle, "View");
            _projectionUniform = gl.GetUniformLocation(_shader.Handle, "Projection");

            _graph = new OpenGLSceneGraph();
            _graph.Nodes.Add(new CoordinateSystemLeaf(gl, _shader, _model.Features.OfType<CoordinateSystem>()));
            _graph.Nodes.Add(new DatumPlaneLeaf(gl, _shader, _model.Features.OfType<DatumPlane>()));
            _graph.Nodes.Add(new GeometryLeaf(gl, _shader));
        }

        public OctreeShader(OpenGL gl)
            : base(gl)
        {
            _program = new ShaderProgram();
            var vertex = new VertexShader();
            var fragment = new FragmentShader();
            var geo = new GeometryShader();

            vertex.CreateInContext(gl);
            vertex.SetSource(File.ReadAllText("Shaders/Octree.vert.glsl"));
            vertex.Compile();

            fragment.CreateInContext(gl);
            fragment.SetSource(File.ReadAllText("Shaders/Octree.frag.glsl"));
            fragment.Compile();

            geo.CreateInContext(gl);
            geo.SetSource(File.ReadAllText("Shaders/Octree.geo.glsl"));
            geo.Compile();

            _program.CreateInContext(gl);
            _program.AttachShader(vertex);
            _program.AttachShader(fragment);
            _program.AttachShader(geo);
            _program.Link();

            Debug.WriteLine(_program.InfoLog);
            foreach (var attachedShader in _program.AttachedShaders)
            {
                Debug.WriteLine(attachedShader.InfoLog);
            }

            _modelLocation = gl.GetUniformLocation(_program.ProgramObject, "Model");
            _viewLocation = gl.GetUniformLocation(_program.ProgramObject, "View");
            _projectionLocation = gl.GetUniformLocation(_program.ProgramObject, "Projection");
        }

        /// <summary>
        /// Retrieve the uniform locations using the uniform names and add them to Uniforms.
        /// </summary>
        /// <param name="gl"></param>
        /// <param name="uniformNames"></param>
        private void AddUniformIds(OpenGL gl, IEnumerable<string> uniformNames)
        {
            if (Uniforms == null)
                Uniforms = new Dictionary<string, int>();

            foreach (var name in uniformNames)
            {
                var location = gl.GetUniformLocation(ShaderProgramId, name);
                Uniforms.Add(name, location);
            }
        }

        public override void OnLoad(OpenGL gl)
        {
            gl.Enable(OpenGL.GL_CULL_FACE);
            gl.Enable(OpenGL.GL_DEPTH_TEST);
            gl.Enable(OpenGL.GL_BLEND);
            gl.BlendFunc(BlendingSourceFactor.SourceAlpha, BlendingDestinationFactor.OneMinusSourceAlpha);

            _camera = new OrthographicCamera();
            _camera.View *= Mat4.RotateY(Angle.FromDegrees(15));

            _shader = new BasicShader(gl);
            _modelUniform = gl.GetUniformLocation(_shader.Handle, "Model");
            _viewUniform = gl.GetUniformLocation(_shader.Handle, "View");
            _projectionUniform = gl.GetUniformLocation(_shader.Handle, "Projection");

            _graph = new SceneGraph();

            _graph.Nodes.Add(new CoordinateSystemLeaf(gl, _shader, _model.Features.OfType<CoordinateSystem>()));
            _graph.Nodes.Add(new DatumPlaneLeaf(gl, _shader, _model.Features.OfType<DatumPlane>()));

            const double s = 5.0;
            var v0 = new Vertex("v0", new Vect3(0, 0, 0));
            var v1 = new Vertex("v1", new Vect3(0, 0, s));
            var v2 = new Vertex("v2", new Vect3(s, 0, s));
            var v3 = new Vertex("v3", new Vect3(s, 0, 0));
            var v4 = new Vertex("v4", new Vect3(0, s, 0));
            var v5 = new Vertex("v5", new Vect3(0, s, s));
            var v6 = new Vertex("v6", new Vect3(s, s, s));
            var v7 = new Vertex("v7", new Vect3(s, s, 0));

            var f0 = new Face("f0");
            var f1 = new Face("f1");
            var f2 = new Face("f2");
            var f3 = new Face("f3");
            var f4 = new Face("f4");
            var f5 = new Face("f5");
            LineHalfEdge e0a = null;
            LineHalfEdge e0b = null;
            LineHalfEdge e1a = null;
            LineHalfEdge e1b = null;
            LineHalfEdge e2a = null;
            LineHalfEdge e2b = null;
            LineHalfEdge e3a = null;
            LineHalfEdge e3b = null;
            LineHalfEdge e4a = null;
            LineHalfEdge e4b = null;
            LineHalfEdge e5a = null;
            LineHalfEdge e5b = null;
            LineHalfEdge e6a = null;
            LineHalfEdge e6b = null;
            LineHalfEdge e7a = null;
            LineHalfEdge e7b = null;
            LineHalfEdge e8a = null;
            LineHalfEdge e8b = null;
            LineHalfEdge e9a = null;
            LineHalfEdge e9b = null;
            LineHalfEdge e10a = null;
            LineHalfEdge e10b = null;
            LineHalfEdge e11a = null;
            LineHalfEdge e11b = null;

            e0a = new LineHalfEdge("e0a", v1, new Lazy<IHalfEdge>(() => e0b), f0);
            e1a = new LineHalfEdge("e1a", v2, new Lazy<IHalfEdge>(() => e1b), f0);
            e2a = new LineHalfEdge("e2a", v3, new Lazy<IHalfEdge>(() => e2b), f0);
            e3a = new LineHalfEdge("e3a", v0, new Lazy<IHalfEdge>(() => e3b), f0);
            f0.Loops.Add(new EdgeLoop(e0a, e1a, e2a, e3a));

            e0b = new LineHalfEdge("e0b", v0, new Lazy<IHalfEdge>(() => e0a), f1);
            e7a = new LineHalfEdge("e7a", v4, new Lazy<IHalfEdge>(() => e7b), f1);
            e8a = new LineHalfEdge("e8a", v5, new Lazy<IHalfEdge>(() => e8b), f1);
            e4a = new LineHalfEdge("e4a", v1, new Lazy<IHalfEdge>(() => e4b), f1);
            f1.Loops.Add(new EdgeLoop(e0b, e7a, e8a, e4a));

            e1b = new LineHalfEdge("e1b", v1, new Lazy<IHalfEdge>(() => e1a), f2);
            e4b = new LineHalfEdge("e4b", v5, new Lazy<IHalfEdge>(() => e4a), f2);
            e9a = new LineHalfEdge("e9a", v6, new Lazy<IHalfEdge>(() => e9b), f2);
            e5a = new LineHalfEdge("e5a", v2, new Lazy<IHalfEdge>(() => e5b), f2);
            f2.Loops.Add(new EdgeLoop(e1b, e4b, e9a, e5a));

            e2b = new LineHalfEdge("e2b", v2, new Lazy<IHalfEdge>(() => e2a), f3);
            e5b = new LineHalfEdge("e5b", v6, new Lazy<IHalfEdge>(() => e5a), f3);
            e10a = new LineHalfEdge("e10a", v7, new Lazy<IHalfEdge>(() => e10b), f3);
            e6a = new LineHalfEdge("e6a", v3, new Lazy<IHalfEdge>(() => e6b), f3);
            f3.Loops.Add(new EdgeLoop(e2b, e5b, e10a, e6a));

            e3b = new LineHalfEdge("e3b", v3, new Lazy<IHalfEdge>(() => e3a), f4);
            e6b = new LineHalfEdge("e6b", v7, new Lazy<IHalfEdge>(() => e6a), f4);
            e11a = new LineHalfEdge("e11a", v4, new Lazy<IHalfEdge>(() => e11b), f4);
            e7b = new LineHalfEdge("e7b", v0, new Lazy<IHalfEdge>(() => e7a), f4);
            f4.Loops.Add(new EdgeLoop(e3b, e6b, e11a, e7b));

            e8b = new LineHalfEdge("e8b", v4, new Lazy<IHalfEdge>(() => e8a), f5);
            e11b = new LineHalfEdge("e11b", v7, new Lazy<IHalfEdge>(() => e11a), f5);
            e10b = new LineHalfEdge("e10b", v6, new Lazy<IHalfEdge>(() => e10a), f5);
            e9b = new LineHalfEdge("e9b", v5, new Lazy<IHalfEdge>(() => e9b), f5);
            f5.Loops.Add(new EdgeLoop(e8b, e11b, e10b, e9b));

            var shell = new Shell(f0,f1,f2,f3,f4,f5);

            var data = new List<Vert>();
//.........这里部分代码省略.........