Пример #1
0
        public override WriteableBitmap Initialize(Device device)
        {
            // Create device and swap chain.
            var swapChainPresenter = new WpfSwapChainPresenter();

            _swapChain     = device.CreateSwapChain(Width, Height, swapChainPresenter);
            _deviceContext = device.ImmediateContext;

            // Create RenderTargetView from the backbuffer.
            var backBuffer = Texture2D.FromSwapChain(_swapChain, 0);

            _renderTargetView = device.CreateRenderTargetView(backBuffer);

            // Create the depth buffer
            var depthBuffer = device.CreateTexture2D(new Texture2DDescription
            {
                ArraySize = 1,
                MipLevels = 1,
                Width     = Width,
                Height    = Height,
                BindFlags = BindFlags.DepthStencil
            });

            // Create the depth buffer view
            _depthView = device.CreateDepthStencilView(depthBuffer);

            // Create cube map resources.
            var cubeMapTexture = device.CreateTexture2D(new Texture2DDescription
            {
                Width     = CubeMapSize,
                Height    = CubeMapSize,
                ArraySize = 6,
                BindFlags = BindFlags.RenderTarget | BindFlags.ShaderResource,
                MipLevels = 1
            });

            _renderTargetViewCube = device.CreateRenderTargetView(cubeMapTexture);
            _resourceViewCube     = device.CreateShaderResourceView(cubeMapTexture);
            var depthBufferCube = device.CreateTexture2D(new Texture2DDescription
            {
                ArraySize = 6,
                MipLevels = 1,
                Width     = CubeMapSize,
                Height    = CubeMapSize,
                BindFlags = BindFlags.DepthStencil
            });

            _depthViewCube = device.CreateDepthStencilView(depthBufferCube);

            // Load model.
            var modelLoader = new ModelLoader(device, TextureLoader.CreateTextureFromStream);

            _model = modelLoader.Load("Modules/SampleBrowser/Samples/EnvironmentMapping/teapot.obj");

            // Compile Vertex and Pixel shaders
            var vertexShaderByteCode = ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "VS_CubeMap", "vs_4_0");

            _vertexShaderCubeMap  = device.CreateVertexShader(vertexShaderByteCode);
            _vertexShaderStandard = device.CreateVertexShader(ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "VS_Standard", "vs_4_0"));

            _geometryShaderCubeMap = device.CreateGeometryShader(ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "GS_CubeMap", "gs_4_0"));

            _pixelShaderCubeMap    = device.CreatePixelShader(ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "PS_CubeMap", "ps_4_0"));
            _pixelShaderStandard   = device.CreatePixelShader(ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "PS_Standard", "ps_4_0"));
            _pixelShaderReflective = device.CreatePixelShader(ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "PS_Reflective", "ps_4_0"));

            _model.SetInputLayout(device, vertexShaderByteCode.InputSignature);

            var sampler = device.CreateSamplerState(SamplerStateDescription.Default);

            // Create constant buffers.
            _vertexConstantBuffer = device.CreateBuffer(new BufferDescription
            {
                SizeInBytes = Utilities.SizeOf <VertexShaderData>(),
                BindFlags   = BindFlags.ConstantBuffer
            });
            _geometryConstantBuffer = device.CreateBuffer(new BufferDescription
            {
                SizeInBytes = Utilities.SizeOf <GeometryShaderData>(),
                BindFlags   = BindFlags.ConstantBuffer
            });
            var pixelConstantBuffer = device.CreateBuffer(new BufferDescription
            {
                SizeInBytes = Utilities.SizeOf <PixelShaderData>(),
                BindFlags   = BindFlags.ConstantBuffer
            });

            // Prepare all the stages
            _deviceContext.VertexShader.SetConstantBuffers(0, _vertexConstantBuffer);
            _deviceContext.GeometryShader.SetConstantBuffers(0, _geometryConstantBuffer);
            _deviceContext.PixelShader.SetConstantBuffers(0, pixelConstantBuffer);
            _deviceContext.PixelShader.SetSamplers(0, sampler);

            _vertexShaderData = new VertexShaderData();

            _view1 = Matrix.LookAtLH(Vector3.Zero, new Vector3(1, 0, 0), Vector3.UnitY);
            _view2 = Matrix.LookAtLH(Vector3.Zero, new Vector3(-1, 0, 0), Vector3.UnitY);
            _view3 = Matrix.LookAtLH(Vector3.Zero, new Vector3(0, 1, 0), -Vector3.UnitZ);
            _view4 = Matrix.LookAtLH(Vector3.Zero, new Vector3(0, -1, 0), Vector3.UnitZ);
            _view5 = Matrix.LookAtLH(Vector3.Zero, new Vector3(0, 0, 1), Vector3.UnitY);
            _view6 = Matrix.LookAtLH(Vector3.Zero, new Vector3(0, 0, -1), Vector3.UnitY);

            var from = new Vector3(0, 30, 70);
            var to   = new Vector3(0, 0, 0);

            // Prepare matrices
            var view = Matrix.LookAtLH(from, to, Vector3.UnitY);

            _projectionCube = Matrix.PerspectiveFovLH(MathUtil.PiOverTwo, 1.0f, 1f, 10000.0f);
            _projection     = Matrix.PerspectiveFovLH(MathUtil.Pi / 3.0f, Width / (float)Height, 1f, 10000.0f);

            _viewProjectionCube = Matrix.Multiply(view, _projectionCube);
            _viewProjection     = Matrix.Multiply(view, _projection);

            var pixelShaderData = new PixelShaderData
            {
                LightDirection = new Vector4(Vector3.Normalize(new Vector3(0.5f, 0, -1)), 1),
                EyePosition    = new Vector4(from, 1)
            };

            _deviceContext.SetBufferData(pixelConstantBuffer, ref pixelShaderData);

            // Setup targets and viewport for rendering
            _deviceContext.Rasterizer.SetViewports(new Viewport(0, 0, Width, Height, 0.0f, 1.0f));
            _deviceContext.OutputMerger.SetTargets(_depthView, _renderTargetView);

            return(swapChainPresenter.Bitmap);
        }
Пример #2
0
        public override WriteableBitmap Initialize(Device device)
		{
            const int width = 600;
			const int height = 400;

			// Create device and swap chain.
            var swapChainPresenter = new WpfSwapChainPresenter();
            _swapChain = device.CreateSwapChain(width, height, swapChainPresenter);
			_deviceContext = device.ImmediateContext;

			// Create RenderTargetView from the backbuffer.
			var backBuffer = Texture2D.FromSwapChain(_swapChain, 0);
			_renderTargetView = device.CreateRenderTargetView(backBuffer);

			// Create the depth buffer
			var depthBuffer = device.CreateTexture2D(new Texture2DDescription
			{
				ArraySize = 1,
				MipLevels = 1,
				Width = width,
				Height = height,
				BindFlags = BindFlags.DepthStencil
			});

			// Create the depth buffer view
			_depthView = device.CreateDepthStencilView(depthBuffer);

            // Load model.
		    var modelLoader = new ModelLoader(device, TextureLoader.CreateTextureFromStream);
            _model = modelLoader.Load("Modules/SampleBrowser/Samples/ModelLoading/Car/car.obj");

            // Compile Vertex and Pixel shaders
            var vertexShaderByteCode = ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/ModelLoading/ModelLoading.fx", "VS", "vs_4_0");
            var vertexShader = device.CreateVertexShader(vertexShaderByteCode);

            var pixelShaderByteCode = ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/ModelLoading/ModelLoading.fx", "PS", "ps_4_0");
            var pixelShader = device.CreatePixelShader(pixelShaderByteCode);

		    _model.SetInputLayout(device, vertexShaderByteCode.InputSignature);

			var sampler = device.CreateSamplerState(new SamplerStateDescription
			{
				Filter = Filter.MinMagMipPoint,
				AddressU = TextureAddressMode.Wrap,
				AddressV = TextureAddressMode.Wrap,
				AddressW = TextureAddressMode.Wrap,
				BorderColor = Color4.Black,
				ComparisonFunction = Comparison.Never,
				MaximumAnisotropy = 16,
				MipLodBias = 0,
				MinimumLod = 0,
				MaximumLod = 16,
			});

            // Create constant buffers.
            _vertexConstantBuffer = device.CreateBuffer(new BufferDescription
            {
                SizeInBytes = Utilities.SizeOf<VertexShaderData>(),
                BindFlags = BindFlags.ConstantBuffer
            });
            _pixelConstantBuffer = device.CreateBuffer(new BufferDescription
            {
                SizeInBytes = Utilities.SizeOf<PixelShaderData>(),
                BindFlags = BindFlags.ConstantBuffer
            });

			// Prepare all the stages
            _deviceContext.VertexShader.SetConstantBuffers(0, _vertexConstantBuffer);
            _deviceContext.VertexShader.Shader = vertexShader;
            _deviceContext.PixelShader.SetConstantBuffers(0, _pixelConstantBuffer);
            _deviceContext.PixelShader.Shader = pixelShader;
			_deviceContext.PixelShader.SetSamplers(0, sampler);

            _vertexShaderData = new VertexShaderData();

            _pixelShaderData = new PixelShaderData
            {
                LightDirection = new Vector4(Vector3.Normalize(new Vector3(0.5f, 0, -1)), 1)
            };
            _deviceContext.SetBufferData(_pixelConstantBuffer, ref _pixelShaderData);

		    // Setup targets and viewport for rendering
			_deviceContext.Rasterizer.SetViewports(new Viewport(0, 0, width, height, 0.0f, 1.0f));
			_deviceContext.OutputMerger.SetTargets(_depthView, _renderTargetView);

            //_deviceContext.Rasterizer.State = device.CreateRasterizerState(new Pipeline.Rasterizer.RasterizerStateDescription
            //{
            //    FillMode = Pipeline.Rasterizer.FillMode.Wireframe
            //});

			// Prepare matrices
			_projection = Matrix.PerspectiveFovLH(MathUtil.Pi / 3.0f, 
				width / (float) height, 1f, 1000.0f);

            return swapChainPresenter.Bitmap;
		}
        public override WriteableBitmap Initialize(Device device)
		{
			// Create device and swap chain.
            var swapChainPresenter = new WpfSwapChainPresenter();
            _swapChain = device.CreateSwapChain(Width, Height, swapChainPresenter);
			_deviceContext = device.ImmediateContext;

			// Create RenderTargetView from the backbuffer.
			var backBuffer = Texture2D.FromSwapChain(_swapChain, 0);
			_renderTargetView = device.CreateRenderTargetView(backBuffer);

			// Create the depth buffer
			var depthBuffer = device.CreateTexture2D(new Texture2DDescription
			{
				ArraySize = 1,
				MipLevels = 1,
				Width = Width,
				Height = Height,
				BindFlags = BindFlags.DepthStencil
			});

			// Create the depth buffer view
			_depthView = device.CreateDepthStencilView(depthBuffer);

            // Create cube map resources.
            var cubeMapTexture = device.CreateTexture2D(new Texture2DDescription
            {
                Width = CubeMapSize,
                Height= CubeMapSize,
                ArraySize = 6,
                BindFlags = BindFlags.RenderTarget | BindFlags.ShaderResource,
                MipLevels = 1
            });
            _renderTargetViewCube = device.CreateRenderTargetView(cubeMapTexture);
            _resourceViewCube = device.CreateShaderResourceView(cubeMapTexture);
            var depthBufferCube = device.CreateTexture2D(new Texture2DDescription
            {
                ArraySize = 6,
                MipLevels = 1,
                Width = CubeMapSize,
                Height = CubeMapSize,
                BindFlags = BindFlags.DepthStencil
            });
            _depthViewCube = device.CreateDepthStencilView(depthBufferCube);

            // Load model.
		    var modelLoader = new ModelLoader(device, TextureLoader.CreateTextureFromStream);
            _model = modelLoader.Load("Modules/SampleBrowser/Samples/EnvironmentMapping/teapot.obj");

            // Compile Vertex and Pixel shaders
            var vertexShaderByteCode = ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "VS_CubeMap", "vs_4_0");
            _vertexShaderCubeMap = device.CreateVertexShader(vertexShaderByteCode);
            _vertexShaderStandard = device.CreateVertexShader(ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "VS_Standard", "vs_4_0"));

            _geometryShaderCubeMap = device.CreateGeometryShader(ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "GS_CubeMap", "gs_4_0"));

            _pixelShaderCubeMap = device.CreatePixelShader(ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "PS_CubeMap", "ps_4_0"));
            _pixelShaderStandard = device.CreatePixelShader(ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "PS_Standard", "ps_4_0"));
            _pixelShaderReflective = device.CreatePixelShader(ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/EnvironmentMapping/EnvironmentMapping.fx", "PS_Reflective", "ps_4_0"));

		    _model.SetInputLayout(device, vertexShaderByteCode.InputSignature);

            var sampler = device.CreateSamplerState(SamplerStateDescription.Default);

            // Create constant buffers.
            _vertexConstantBuffer = device.CreateBuffer(new BufferDescription
            {
                SizeInBytes = Utilities.SizeOf<VertexShaderData>(),
                BindFlags = BindFlags.ConstantBuffer
            });
            _geometryConstantBuffer = device.CreateBuffer(new BufferDescription
            {
                SizeInBytes = Utilities.SizeOf<GeometryShaderData>(),
                BindFlags = BindFlags.ConstantBuffer
            });
            var pixelConstantBuffer = device.CreateBuffer(new BufferDescription
            {
                SizeInBytes = Utilities.SizeOf<PixelShaderData>(),
                BindFlags = BindFlags.ConstantBuffer
            });

			// Prepare all the stages
            _deviceContext.VertexShader.SetConstantBuffers(0, _vertexConstantBuffer);
            _deviceContext.GeometryShader.SetConstantBuffers(0, _geometryConstantBuffer);
            _deviceContext.PixelShader.SetConstantBuffers(0, pixelConstantBuffer);
			_deviceContext.PixelShader.SetSamplers(0, sampler);

            _vertexShaderData = new VertexShaderData();

            _view1 = Matrix.LookAtLH(Vector3.Zero, new Vector3(1, 0, 0), Vector3.UnitY);
            _view2 = Matrix.LookAtLH(Vector3.Zero, new Vector3(-1, 0, 0), Vector3.UnitY);
            _view3 = Matrix.LookAtLH(Vector3.Zero, new Vector3(0, 1, 0), -Vector3.UnitZ);
            _view4 = Matrix.LookAtLH(Vector3.Zero, new Vector3(0, -1, 0), Vector3.UnitZ);
            _view5 = Matrix.LookAtLH(Vector3.Zero, new Vector3(0, 0, 1), Vector3.UnitY);
            _view6 = Matrix.LookAtLH(Vector3.Zero, new Vector3(0, 0, -1), Vector3.UnitY);

            var from = new Vector3(0, 30, 70);
            var to = new Vector3(0, 0, 0);

            // Prepare matrices
            var view = Matrix.LookAtLH(from, to, Vector3.UnitY);
            
			_projectionCube = Matrix.PerspectiveFovLH(MathUtil.PiOverTwo, 1.0f, 1f, 10000.0f);
            _projection = Matrix.PerspectiveFovLH(MathUtil.Pi / 3.0f, Width / (float) Height, 1f, 10000.0f);

            _viewProjectionCube = Matrix.Multiply(view, _projectionCube);
            _viewProjection = Matrix.Multiply(view, _projection);

            var pixelShaderData = new PixelShaderData
            {
                LightDirection = new Vector4(Vector3.Normalize(new Vector3(0.5f, 0, -1)), 1),
                EyePosition = new Vector4(from, 1)
            };
            _deviceContext.SetBufferData(pixelConstantBuffer, ref pixelShaderData);

            // Setup targets and viewport for rendering
            _deviceContext.Rasterizer.SetViewports(new Viewport(0, 0, Width, Height, 0.0f, 1.0f));
            _deviceContext.OutputMerger.SetTargets(_depthView, _renderTargetView);

            return swapChainPresenter.Bitmap;
		}
Пример #4
0
        public override WriteableBitmap Initialize(Device device)
        {
            const int width  = 600;
            const int height = 400;

            // Create device and swap chain.
            var swapChainPresenter = new WpfSwapChainPresenter();

            _swapChain     = device.CreateSwapChain(width, height, swapChainPresenter);
            _deviceContext = device.ImmediateContext;

            // Create RenderTargetView from the backbuffer.
            var backBuffer = Texture2D.FromSwapChain(_swapChain, 0);

            _renderTargetView = device.CreateRenderTargetView(backBuffer);

            // Create the depth buffer
            var depthBuffer = device.CreateTexture2D(new Texture2DDescription
            {
                ArraySize = 1,
                MipLevels = 1,
                Width     = width,
                Height    = height,
                BindFlags = BindFlags.DepthStencil
            });

            // Create the depth buffer view
            _depthView = device.CreateDepthStencilView(depthBuffer);

            // Load model.
            var modelLoader = new ModelLoader(device, TextureLoader.CreateTextureFromStream);

            _model = modelLoader.Load("Modules/SampleBrowser/Samples/ModelLoading/Car/car.obj");

            // Compile Vertex and Pixel shaders
            var vertexShaderByteCode = ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/ModelLoading/ModelLoading.fx", "VS", "vs_4_0");
            var vertexShader         = device.CreateVertexShader(vertexShaderByteCode);

            var pixelShaderByteCode = ShaderCompiler.CompileFromFile("Modules/SampleBrowser/Samples/ModelLoading/ModelLoading.fx", "PS", "ps_4_0");
            var pixelShader         = device.CreatePixelShader(pixelShaderByteCode);

            _model.SetInputLayout(device, vertexShaderByteCode.InputSignature);

            var sampler = device.CreateSamplerState(new SamplerStateDescription
            {
                Filter             = Filter.MinMagMipPoint,
                AddressU           = TextureAddressMode.Wrap,
                AddressV           = TextureAddressMode.Wrap,
                AddressW           = TextureAddressMode.Wrap,
                BorderColor        = Color4.Black,
                ComparisonFunction = Comparison.Never,
                MaximumAnisotropy  = 16,
                MipLodBias         = 0,
                MinimumLod         = 0,
                MaximumLod         = 16,
            });

            // Create constant buffers.
            _vertexConstantBuffer = device.CreateBuffer(new BufferDescription
            {
                SizeInBytes = Utilities.SizeOf <VertexShaderData>(),
                BindFlags   = BindFlags.ConstantBuffer
            });
            _pixelConstantBuffer = device.CreateBuffer(new BufferDescription
            {
                SizeInBytes = Utilities.SizeOf <PixelShaderData>(),
                BindFlags   = BindFlags.ConstantBuffer
            });

            // Prepare all the stages
            _deviceContext.VertexShader.SetConstantBuffers(0, _vertexConstantBuffer);
            _deviceContext.VertexShader.Shader = vertexShader;
            _deviceContext.PixelShader.SetConstantBuffers(0, _pixelConstantBuffer);
            _deviceContext.PixelShader.Shader = pixelShader;
            _deviceContext.PixelShader.SetSamplers(0, sampler);

            _vertexShaderData = new VertexShaderData();

            _pixelShaderData = new PixelShaderData
            {
                LightDirection = new Vector4(Vector3.Normalize(new Vector3(0.5f, 0, -1)), 1)
            };
            _deviceContext.SetBufferData(_pixelConstantBuffer, ref _pixelShaderData);

            // Setup targets and viewport for rendering
            _deviceContext.Rasterizer.SetViewports(new Viewport(0, 0, width, height, 0.0f, 1.0f));
            _deviceContext.OutputMerger.SetTargets(_depthView, _renderTargetView);

            //_deviceContext.Rasterizer.State = device.CreateRasterizerState(new Pipeline.Rasterizer.RasterizerStateDescription
            //{
            //    FillMode = Pipeline.Rasterizer.FillMode.Wireframe
            //});

            // Prepare matrices
            _projection = Matrix.PerspectiveFovLH(MathUtil.Pi / 3.0f,
                                                  width / (float)height, 1f, 1000.0f);

            return(swapChainPresenter.Bitmap);
        }
Пример #5
0
        public Program()
        {
            var form = new RenderForm("SharpDX - Load Mesh Sample");
            form.Width = 1280;
            form.Height = 720;

            // SwapChain description
            var desc = new SwapChainDescription()
            {
                BufferCount = 1,
                ModeDescription = new ModeDescription(form.Width, form.Height, new Rational(60, 1), Format.R8G8B8A8_UNorm),
                IsWindowed = true,
                OutputHandle = form.Handle,
                SampleDescription = new SampleDescription(1, 0),
                SwapEffect = SwapEffect.Discard,
                Usage = Usage.RenderTargetOutput
            };

            // Create Device and SwapChain
            Device device;
            SwapChain swapChain;
            Device.CreateWithSwapChain(DriverType.Hardware, DeviceCreationFlags.Debug, desc, out device, out swapChain);
            var context = device.ImmediateContext;

            // Ignore all windows events
            var factory = swapChain.GetParent<Factory>();
            factory.MakeWindowAssociation(form.Handle, WindowAssociationFlags.IgnoreAll);

            // New RenderTargetView from the backbuffer
            var backBuffer = Texture2D.FromSwapChain<Texture2D>(swapChain, 0);
            var renderView = new RenderTargetView(device, backBuffer);

            //Load model
            String fileName = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "sponza/sponza.3ds");
            ModelLoader modelLoader = new ModelLoader(device);

            Model model = modelLoader.Load(fileName);

            // Compile Vertex and Pixel shaders
            var vertexShaderByteCode = ShaderBytecode.CompileFromFile("LoadMesh.fx", "VS", "vs_5_0");
            var vertexShader = new VertexShader(device, vertexShaderByteCode);

            var pixelShaderByteCode = ShaderBytecode.CompileFromFile("LoadMesh.fx", "PS", "ps_5_0");
            var pixelShader = new PixelShader(device, pixelShaderByteCode);

            model.SetInputLayout(device, ShaderSignature.GetInputSignature(vertexShaderByteCode));

            // Create Depth Buffer & View
            var depthBuffer = new Texture2D(device, new Texture2DDescription()
            {
                Format = Format.D32_Float_S8X24_UInt,
                ArraySize = 1,
                MipLevels = 1,
                Width = form.Width,
                Height = form.Height,
                SampleDescription = new SampleDescription(1, 0),
                Usage = ResourceUsage.Default,
                BindFlags = BindFlags.DepthStencil,
                CpuAccessFlags = CpuAccessFlags.None,
                OptionFlags = ResourceOptionFlags.None
            });

            var depthView = new DepthStencilView(device, depthBuffer);

            //create sampler from texture
            var sampler = new SamplerState(device, new SamplerStateDescription()
            {
                Filter = Filter.MinMagMipLinear,
                AddressU = TextureAddressMode.Wrap,
                AddressV = TextureAddressMode.Wrap,
                AddressW = TextureAddressMode.Wrap,
                BorderColor = Color.Black,
                ComparisonFunction = Comparison.Never,
                MaximumAnisotropy = 16,
                MipLodBias = 0,
                MinimumLod = 0,
                MaximumLod = 16,
            });

            // Create Constant Buffers
            var vertexConstantBuffer = new Buffer(device, Utilities.SizeOf<VertexShaderData>(), ResourceUsage.Default, BindFlags.ConstantBuffer, CpuAccessFlags.None, ResourceOptionFlags.None, 0);
            var pixelConstantBuffer = new Buffer(device, Utilities.SizeOf<PixelShaderData>(), ResourceUsage.Default, BindFlags.ConstantBuffer, CpuAccessFlags.None, ResourceOptionFlags.None, 0);

            // Prepare some of the stages. The others are mesh dependent and will be set later       
            context.VertexShader.Set(vertexShader);
            context.Rasterizer.SetViewport(new Viewport(0, 0, form.Width, form.Height, 0.0f, 1.0f));
            context.PixelShader.Set(pixelShader);
            context.PixelShader.SetSampler(0, sampler);
            context.OutputMerger.SetTargets(depthView, renderView);
            context.VertexShader.SetConstantBuffer(0, vertexConstantBuffer);
            context.PixelShader.SetConstantBuffer(0, pixelConstantBuffer);

            //allocate data structs for the vertex and pixel constant buffers
            VertexShaderData vsData = new VertexShaderData();
            PixelShaderData psData = new PixelShaderData();

            //set light position
            psData.lightPos = new Vector4(0, 2.5f, 0, 0);

            //update pixel shader constant buffer. Only need to do this once.
            context.UpdateSubresource(ref psData, pixelConstantBuffer);

            // Calc projection matrix
            var proj = Matrix.PerspectiveFovLH((float)Math.PI / 4.0f, form.Width / (float)form.Height, 0.1f, 100.0f);

            // Use clock
            var clock = new Stopwatch();
            clock.Start();

            // Main loop
            RenderLoop.Run(form, () =>
            {
                var time = clock.ElapsedMilliseconds / 1000.0f;

                // Prepare matrices
                Vector3 cameraPosition = new Vector3(0, 3, 5.0f);
                Vector3 cameraLookAt = new Vector3(0, 2.0f, 0);

                //rotate camera
                Vector4 tempPos = Vector3.Transform(cameraPosition, Matrix.RotationY(0.2f * time));
                cameraPosition = new Vector3(tempPos.X, tempPos.Y, tempPos.Z);

                //calculate the view matrix 
                var view = Matrix.LookAtLH(cameraPosition, cameraLookAt, Vector3.UnitY);
                var viewProj = Matrix.Multiply(view, proj);

                // Clear views
                context.ClearDepthStencilView(depthView, DepthStencilClearFlags.Depth, 1.0f, 0);
                context.ClearRenderTargetView(renderView, Color.Black);

                // Update transformation matrices
                vsData.world = Matrix.Translation(0, -model.AABoxCentre.Y / 2, 0);
                vsData.worldView = vsData.world * view;
                vsData.worldViewProj = vsData.world * viewProj;

                //transpose matrices before sending them to the shader
                vsData.world.Transpose();
                vsData.worldView.Transpose();
                vsData.worldViewProj.Transpose();

                //update vertex shader constant buffer
                context.UpdateSubresource(ref vsData, vertexConstantBuffer);

                // Draw the cube
                model.Render(context);

                // Present
                swapChain.Present(0, PresentFlags.None);
            });

            // Release all resources
            model.Dispose();
            vertexShaderByteCode.Dispose();
            vertexShader.Dispose();
            pixelShaderByteCode.Dispose();
            pixelShader.Dispose();
            renderView.Dispose();
            backBuffer.Dispose();
            context.ClearState();
            context.Flush();
            device.Dispose();
            context.Dispose();
            swapChain.Dispose();
            factory.Dispose();
        }