C# Graphics.BlendState類代碼示例

        public Level(int _index)
        {
            random = new Random();
            removeQueue = new Queue<GameObject>();
            font = Main.font;
            prop = 0.08f;
            lightable = new List<Point>();
            nullColor = new Color(0, 0, 0, 0);
            multiply = new BlendState()
            {
                AlphaSourceBlend = Blend.DestinationAlpha,
                AlphaDestinationBlend = Blend.Zero,
                AlphaBlendFunction = BlendFunction.Add,
                ColorSourceBlend = Blend.DestinationColor,
                ColorDestinationBlend = Blend.Zero,
                ColorBlendFunction = BlendFunction.Add
            };
            index = _index;
            lightSources = new List<LightSource>();
            objects = new List<GameObject>();
            charMap = Managers.Executive.levels[index][0];
            backCharMap = Managers.Executive.levels[index][1];
            tileMap = new Tile[charMap.GetLength(0), charMap.GetLength(1)];
            backTileMap = new Tile[charMap.GetLength(0), charMap.GetLength(1)];
            lightMap = new Light[charMap.GetLength(0), charMap.GetLength(1)];

        }

        public DeferredRenderer(GraphicsDevice GraphicsDevice, int Width, int Height)
            : base(GraphicsDevice)
        {
            //Create LightMap BlendState
            LightMapBS = new BlendState();
            LightMapBS.ColorSourceBlend = Blend.One;
            LightMapBS.ColorDestinationBlend = Blend.One;
            LightMapBS.ColorBlendFunction = BlendFunction.Add;
            LightMapBS.AlphaSourceBlend = Blend.One;
            LightMapBS.AlphaDestinationBlend = Blend.One;
            LightMapBS.AlphaBlendFunction = BlendFunction.Add;

            //Set GBuffer Texture Size
            GBufferTextureSize = new Vector2(Width, Height);

            //Intialize Each Target of the GBuffer
            GBufferTargets = new RenderTargetBinding[3];
            GBufferTargets[0] = new RenderTargetBinding(new RenderTarget2D(GraphicsDevice, Width, Height, false, SurfaceFormat.Rgba64, DepthFormat.Depth24Stencil8));
            GBufferTargets[1] = new RenderTargetBinding(new RenderTarget2D(GraphicsDevice, Width, Height, false, SurfaceFormat.Rgba64, DepthFormat.Depth24Stencil8));
            GBufferTargets[2] = new RenderTargetBinding(new RenderTarget2D(GraphicsDevice, Width, Height, false, SurfaceFormat.Vector2, DepthFormat.Depth24Stencil8));

            //Initialize LightMap
            LightMap = new RenderTarget2D(GraphicsDevice, Width, Height, false, SurfaceFormat.Color, DepthFormat.Depth24Stencil8);

            //Create Fullscreen Quad
            fsq = new FullscreenQuad(GraphicsDevice);
        }

        public override void Draw(GameTime gameTime)
        {
            BlendState blend = new BlendState();
            blend.ColorBlendFunction = BlendFunction.Add;
            blend.ColorSourceBlend = Blend.One;
            blend.ColorDestinationBlend = Blend.One;

            sprites.Begin(SpriteSortMode.Immediate, blend);
            lock (notes)
            {
                foreach (Note note in notes)
                    sprites.Draw(note.Texture, new Rectangle((int)note.Position.X, (int)note.Position.Y, (int)(note.Scale * (float)note.Texture.Width/8), (int)(note.Scale * (float)note.Texture.Height/8)), new Color((float)note.Time, (float)note.Time, (float)note.Time));
            }

            sprites.Draw(square, new Rectangle(0, 0, Game.GraphicsDevice.Viewport.Width, Game.GraphicsDevice.Viewport.Height), new Color(White.Value, White.Value, White.Value));

            sprites.End();

            blend = new BlendState();
            blend.ColorBlendFunction = BlendFunction.Add;
            blend.ColorSourceBlend = Blend.Zero;
            blend.ColorDestinationBlend = Blend.InverseSourceColor;

            sprites.Begin(SpriteSortMode.Immediate, blend);
            sprites.Draw(square, new Rectangle(0, 0, Game.GraphicsDevice.Viewport.Width, Game.GraphicsDevice.Viewport.Height), new Color(Black.Value, Black.Value, Black.Value));

            sprites.End();

            base.Draw(gameTime);
        }

 static HighlightModule()
 {
     var color = Color.Black;
     CubeVerticies = new[]
     {
         new VertexPositionColor(new XVector3(0, 0, 1), color),
         new VertexPositionColor(new XVector3(1, 0, 1), color),
         new VertexPositionColor(new XVector3(1, 1, 1), color),
         new VertexPositionColor(new XVector3(0, 1, 1), color),
         new VertexPositionColor(new XVector3(0, 0, 0), color),
         new VertexPositionColor(new XVector3(1, 0, 0), color),
         new VertexPositionColor(new XVector3(1, 1, 0), color),
         new VertexPositionColor(new XVector3(0, 1, 0), color)
     };
     CubeIndicies = new short[]
     {
         0, 1,   1, 2,   2, 3,   3, 0,
         0, 4,   4, 7,   7, 6,   6, 2,
         1, 5,   5, 4,   3, 7,   6, 5
     };
     DestructionBlendState = new BlendState
     {
         ColorSourceBlend = Blend.DestinationColor,
         ColorDestinationBlend = Blend.SourceColor,
         AlphaSourceBlend = Blend.DestinationAlpha,
         AlphaDestinationBlend = Blend.SourceAlpha
     };
     RasterizerState = new RasterizerState
     {
         DepthBias = -3,
         SlopeScaleDepthBias = -3
     };
 }

        /// <summary>
        /// Begins a new sprite and text batch with the specified render state.
        /// </summary>
        /// <param name="sortMode">The drawing order for sprite and text drawing. <see cref="SpriteSortMode.Deferred"/> by default.</param>
        /// <param name="blendState">State of the blending. Uses <see cref="BlendState.AlphaBlend"/> if null.</param>
        /// <param name="samplerState">State of the sampler. Uses <see cref="SamplerState.LinearClamp"/> if null.</param>
        /// <param name="depthStencilState">State of the depth-stencil buffer. Uses <see cref="DepthStencilState.None"/> if null.</param>
        /// <param name="rasterizerState">State of the rasterization. Uses <see cref="RasterizerState.CullCounterClockwise"/> if null.</param>
        /// <param name="effect">A custom <see cref="Effect"/> to override the default sprite effect. Uses default sprite effect if null.</param>
        /// <param name="transformMatrix">An optional matrix used to transform the sprite geometry. Uses <see cref="Matrix.Identity"/> if null.</param>
        /// <exception cref="InvalidOperationException">Thrown if <see cref="Begin"/> is called next time without previous <see cref="End"/>.</exception>
        /// <remarks>This method uses optional parameters.</remarks>
        /// <remarks>The <see cref="Begin"/> Begin should be called before drawing commands, and you cannot call it again before subsequent <see cref="End"/>.</remarks>
        public void Begin
        (
             SpriteSortMode sortMode = SpriteSortMode.Deferred,
             BlendState blendState = null,
             SamplerState samplerState = null,
             DepthStencilState depthStencilState = null,
             RasterizerState rasterizerState = null,
             Effect effect = null,
             Matrix? transformMatrix = null
        )
        {
            if (_beginCalled)
                throw new InvalidOperationException("Begin cannot be called again until End has been successfully called.");

            // defaults
            _sortMode = sortMode;
            _blendState = blendState ?? BlendState.AlphaBlend;
            _samplerState = samplerState ?? SamplerState.LinearClamp;
            _depthStencilState = depthStencilState ?? DepthStencilState.None;
            _rasterizerState = rasterizerState ?? RasterizerState.CullCounterClockwise;
            _effect = effect;
            _matrix = transformMatrix ?? Matrix.Identity;

            // Setup things now so a user can change them.
            if (sortMode == SpriteSortMode.Immediate)
            {
                Setup();
            }

            _beginCalled = true;
        }

        public LineDrawer(Game game)
        {
            this.game = game;
            lineDrawer = new BasicEffect(game.GraphicsDevice);

            //Set up the default type mapping.
            displayTypes.Add(typeof(PointOnPlaneJoint), typeof(DisplayPointOnPlaneJoint));
            displayTypes.Add(typeof(SwivelHingeAngularJoint), typeof(DisplaySwivelHingeAngularJoint));
            displayTypes.Add(typeof(PointOnLineJoint), typeof(DisplayPointOnLineJoint));
            displayTypes.Add(typeof(BallSocketJoint), typeof(DisplayBallSocketJoint));
            displayTypes.Add(typeof(TwistJoint), typeof(DisplayTwistJoint));
            displayTypes.Add(typeof(TwistMotor), typeof(DisplayTwistMotor));
            displayTypes.Add(typeof(DistanceLimit), typeof(DisplayDistanceLimit));
            displayTypes.Add(typeof(DistanceJoint), typeof(DisplayDistanceJoint));
            displayTypes.Add(typeof(LinearAxisLimit), typeof(DisplayLinearAxisLimit));
            displayTypes.Add(typeof(EllipseSwingLimit), typeof(DisplayEllipseSwingLimit));
            displayTypes.Add(typeof(SingleEntityLinearMotor), typeof(DisplaySingleEntityLinearMotor));
            displayTypes.Add(typeof(RevoluteLimit), typeof(DisplayRevoluteLimit));

            blendState = new BlendState();
            blendState.ColorSourceBlend = Blend.SourceAlpha;
            blendState.AlphaSourceBlend = Blend.SourceAlpha;
            blendState.AlphaDestinationBlend = Blend.InverseSourceAlpha;
            blendState.ColorDestinationBlend = Blend.InverseSourceAlpha;
        }

        public void DrawPolygons(Vector2 position, float angle, float scale,
            Texture2D texture, VertexPositionTexture[] vertices, BlendState blendMode)
        {
            effect.World = Matrix.CreateRotationZ(angle) *
                Matrix.CreateScale(scale) *
                Matrix.CreateTranslation(new Vector3(position, 0));
            effect.Texture = texture;

            GraphicsDevice device = GameEngine.Instance.GraphicsDevice;

            if (blendMode == BlendState.AlphaBlend)
            {
                device.BlendState = BlendState.AlphaBlend;
            }
            else if (blendMode == BlendState.Additive)
            {
                device.BlendState = BlendState.Additive;
            }
            SamplerState s = new SamplerState();
            s.AddressU = TextureAddressMode.Wrap;
            s.AddressV = TextureAddressMode.Wrap;
            device.SamplerStates[0] = s;

            foreach (EffectPass pass in effect.CurrentTechnique.Passes)
            {
                pass.Apply();
                device.DrawUserPrimitives<VertexPositionTexture>(PrimitiveType.TriangleList, vertices, 0, vertices.Length / 3);
                //pass.Apply();
            }
        }

 public RenderLayer(Vector2 parallax_vector, String layer_name, BlendState blend_state)
 {
     name = layer_name;
     visible = true;
     parallax = parallax_vector;
     blending = blend_state;
 }

        /// <summary>
        /// Starts the specified batch.
        /// </summary>
        /// <param name="batch">The batch.</param>
        /// <param name="useCamera">if set to <c>true</c> camera matrix will be applied.</param>
        /// <param name="sortMode">The sort mode.</param>
        /// <param name="blendState">State of the blend.</param>
        /// <param name="samplerState">State of the sampler.</param>
        /// <param name="depthStencilState">State of the depth stencil.</param>
        /// <param name="rasterizerState">State of the rasterizer.</param>
        /// <param name="effect">The effect.</param>
        /// <param name="transform">The transformation matrix.</param>
        public static void Start(this SpriteBatch batch,
            bool useCamera = false,
            SpriteSortMode sortMode = SpriteSortMode.Deferred,
            BlendState blendState = null,
            SamplerState samplerState = null,
            DepthStencilState depthStencilState = null,
            RasterizerState rasterizerState = null,
            Effect effect = null,
            Matrix? transform = null)
        {
            Matrix matrix = AlmiranteEngine.IsWinForms ? Matrix.Identity : AlmiranteEngine.Settings.Resolution.Matrix;

            if (useCamera)
            {
                matrix = AlmiranteEngine.Camera.Matrix * matrix;
            }

            if (transform.HasValue)
            {
                matrix = transform.Value * matrix;
            }

            BatchExtensions._sortMode = sortMode;
            BatchExtensions._blendState = blendState;
            BatchExtensions._samplerState = samplerState;
            BatchExtensions._depthStencilState = depthStencilState;
            BatchExtensions._rasterizerState = rasterizerState;
            BatchExtensions._effect = effect;
            BatchExtensions._matrix = matrix;

            batch.Begin(sortMode, blendState, samplerState, depthStencilState, rasterizerState, effect, matrix);
        }

        internal EffectPass(    Effect effect, 
                                string name,
                                Shader vertexShader, 
                                Shader pixelShader, 
                                BlendState blendState, 
                                DepthStencilState depthStencilState, 
                                RasterizerState rasterizerState,
                                EffectAnnotationCollection annotations )
        {
            Debug.Assert(effect != null, "Got a null effect!");
            Debug.Assert(annotations != null, "Got a null annotation collection!");

            _effect = effect;

            Name = name;

            _vertexShader = vertexShader;
            _pixelShader = pixelShader;

            _blendState = blendState;
            _depthStencilState = depthStencilState;
            _rasterizerState = rasterizerState;

            Annotations = annotations;
        }

 protected override void InitialiserParamètresEffetDeBase()
 {
    EffetDeBase.TextureEnabled = true;
    EffetDeBase.Texture = Texture;
    GestionAlpha = BlendState.AlphaBlend;
    
 }

        public ImperativeRenderer(
            IBatchContainer container,
            DefaultMaterialSet materials,
            int layer = 0, 
            RasterizerState rasterizerState = null,
            DepthStencilState depthStencilState = null,
            BlendState blendState = null,
            SamplerState samplerState = null,
            bool worldSpace = true,
            bool useZBuffer = false,
            bool autoIncrementSortKey = false,
            bool autoIncrementLayer = false
        )
        {
            if (container == null)
                throw new ArgumentNullException("container");
            if (materials == null)
                throw new ArgumentNullException("materials");

            Container = container;
            Materials = materials;
            Layer = layer;
            RasterizerState = rasterizerState;
            DepthStencilState = depthStencilState;
            BlendState = blendState;
            SamplerState = samplerState;
            UseZBuffer = useZBuffer;
            WorldSpace = worldSpace;
            AutoIncrementSortKey = autoIncrementSortKey;
            AutoIncrementLayer = autoIncrementLayer;
            NextSortKey = 0;
            PreviousBatch = null;
        }

        private static void DoAsserts(BlendState blendState, Action<TestDelegate> assertMethod)
        {
            assertMethod(() => blendState.AlphaBlendFunction = BlendFunction.Add);
            assertMethod(() => blendState.AlphaDestinationBlend = Blend.BlendFactor);
            assertMethod(() => blendState.AlphaSourceBlend = Blend.BlendFactor);
            assertMethod(() => blendState.BlendFactor = Color.White);
            assertMethod(() => blendState.ColorBlendFunction = BlendFunction.Add);
            assertMethod(() => blendState.ColorDestinationBlend = Blend.BlendFactor);
            assertMethod(() => blendState.ColorSourceBlend = Blend.BlendFactor);
            assertMethod(() => blendState.ColorWriteChannels = ColorWriteChannels.All);
            assertMethod(() => blendState.ColorWriteChannels1 = ColorWriteChannels.All);
            assertMethod(() => blendState.ColorWriteChannels2 = ColorWriteChannels.All);
            assertMethod(() => blendState.ColorWriteChannels3 = ColorWriteChannels.All);
#if !XNA
            assertMethod(() => blendState.IndependentBlendEnable = true);
#endif
            assertMethod(() => blendState.MultiSampleMask = 0);

#if !XNA
            for (var i = 0; i < 4; i++)
            {
                assertMethod(() => blendState[0].AlphaBlendFunction = BlendFunction.Add);
                assertMethod(() => blendState[0].AlphaDestinationBlend = Blend.BlendFactor);
                assertMethod(() => blendState[0].AlphaSourceBlend = Blend.BlendFactor);
                assertMethod(() => blendState[0].ColorBlendFunction = BlendFunction.Add);
                assertMethod(() => blendState[0].ColorDestinationBlend = Blend.BlendFactor);
                assertMethod(() => blendState[0].ColorSourceBlend = Blend.BlendFactor);
                assertMethod(() => blendState[0].ColorWriteChannels = ColorWriteChannels.All);
            }
#endif
        }

 static BlendState()
 {
     AlphaBlend = new BlendState(Blend.One, Blend.InverseSourceAlpha, "BlendState.AlphaBlend");
     NonPremultiplied = new BlendState(Blend.SourceAlpha, Blend.InverseSourceAlpha, "BlendState.NonPremultiplied");
     Additive = new BlendState(Blend.SourceAlpha, Blend.One, "BlendState.Additive");
     Opaque = new BlendState(Blend.One, Blend.Zero, "BlendState.Opaque");
 }

 public DefaultLightContext(
     Texture2D deferredColorMap, 
     Texture2D deferredNormalMap,
     Texture2D deferredDepthMap, 
     Texture2D deferredSpecularMap,
     RenderTarget2D diffuseLightRenderTarget,
     RenderTarget2D specularLightRenderTarget,
     BlendState lightBlendState,
     RasterizerState rasterizerStateCullNone,
     RasterizerState rasterizerStateCullClockwiseFace, 
     RasterizerState rasterizerStateCullCounterClockwiseFace, 
     Vector2 halfPixel)
 {
     DeferredColorMap = deferredColorMap;
     DeferredNormalMap = deferredNormalMap;
     DeferredDepthMap = deferredDepthMap;
     DeferredSpecularMap = deferredSpecularMap;
     DiffuseLightRenderTarget = diffuseLightRenderTarget;
     SpecularLightRenderTarget = specularLightRenderTarget;
     LightBlendState = lightBlendState;
     RasterizerStateCullNone = rasterizerStateCullNone;
     RasterizerStateCullClockwiseFace = rasterizerStateCullClockwiseFace;
     RasterizerStateCullCounterClockwiseFace = rasterizerStateCullCounterClockwiseFace;
     HalfPixel = halfPixel;
 }