Exemple #1
0
        public override void Run()
        {
            #region Create renderers

            // Note: the renderers take care of creating their own
            // device resources and listen for DeviceManager.OnInitialize

            // Create a axis-grid renderer
            var axisGrid = ToDispose(new AxisGridRenderer());
            axisGrid.Initialize(this);

            // Create and initialize the mesh renderer
            var loadedMesh             = Common.Mesh.LoadFromFile("Character.cmo");
            List <MeshRenderer> meshes = new List <MeshRenderer>();
            meshes.AddRange((from mesh in loadedMesh
                             select ToDispose(new MeshRenderer(mesh))));
            foreach (var m in meshes)
            {
                m.Initialize(this);
                m.World = Matrix.Identity;
            }

            // Create and initialize a Direct2D FPS text renderer
            var fps = ToDispose(new Common.FpsRenderer("Calibri", Color.CornflowerBlue, new Point(8, 8), 16));
            fps.Initialize(this);

            // Create and initialize a general purpose Direct2D text renderer
            // This will display some instructions and the current view and rotation offsets
            var textRenderer = ToDispose(new Common.TextRenderer("Calibri", Color.CornflowerBlue, new Point(8, 40), 12));
            textRenderer.Initialize(this);

            #endregion

            // Initialize the world matrix
            var worldMatrix = Matrix.Identity;

            // Set the camera position
            var cameraPosition = new Vector3(1, 1, 2);
            var cameraTarget   = Vector3.Zero;  // Looking at the origin 0,0,0
            var cameraUp       = Vector3.UnitY; // Y+ is Up

            // Prepare matrices
            // Create the view matrix from our camera position, look target and up direction
            var viewMatrix = Matrix.LookAtRH(cameraPosition, cameraTarget, cameraUp);
            viewMatrix.TranslationVector += new Vector3(0, -0.98f, 0);

            // Create the projection matrix
            /* FoV 60degrees = Pi/3 radians */
            // Aspect ratio (based on window size), Near clip, Far clip
            var projectionMatrix = Matrix.PerspectiveFovRH((float)Math.PI / 3f, Width / (float)Height, 0.5f, 100f);

            // Maintain the correct aspect ratio on resize
            Window.Resize += (s, e) =>
            {
                projectionMatrix = Matrix.PerspectiveFovRH((float)Math.PI / 3f, Width / (float)Height, 0.5f, 100f);
            };

            #region Rotation and window event handlers

            // Create a rotation vector to keep track of the rotation
            // around each of the axes
            var rotation = new Vector3(0.0f, 0.0f, 0.0f);

            // We will call this action to update text
            // for the text renderer
            Action updateText = () =>
            {
                textRenderer.Text =
                    String.Format("Rotation ({0}) (Up/Down Left/Right Wheel+-)\nView ({1}) (A/D, W/S, Shift+Wheel+-)"
                                  + "\nPress X to reinitialize the device and resources (device ptr: {2})"
                                  + "\nPress Z to show/hide depth buffer - Press F to toggle wireframe"
                                  + "\nPress 1,2,3,4 to switch shaders",
                                  rotation,
                                  viewMatrix.TranslationVector,
                                  DeviceManager.Direct3DDevice.NativePointer);
            };

            Dictionary <Keys, bool> keyToggles = new Dictionary <Keys, bool>();
            keyToggles[Keys.Z] = false;
            keyToggles[Keys.F] = false;

            // Support keyboard/mouse input to rotate or move camera view
            var moveFactor = 0.02f; // how much to change on each keypress
            var shiftKey   = false;
            var ctrlKey    = false;
            var background = Color.White;
            Window.KeyDown += (s, e) =>
            {
                var context = DeviceManager.Direct3DContext;

                shiftKey = e.Shift;
                ctrlKey  = e.Control;

                switch (e.KeyCode)
                {
                // WASD -> pans view
                case Keys.A:
                    viewMatrix.TranslationVector += new Vector3(moveFactor * 2, 0f, 0f);
                    break;

                case Keys.D:
                    viewMatrix.TranslationVector -= new Vector3(moveFactor * 2, 0f, 0f);
                    break;

                case Keys.S:
                    if (shiftKey)
                    {
                        viewMatrix.TranslationVector += new Vector3(0f, moveFactor * 2, 0f);
                    }
                    else
                    {
                        viewMatrix.TranslationVector -= new Vector3(0f, 0f, 1) * moveFactor * 2;
                    }
                    break;

                case Keys.W:
                    if (shiftKey)
                    {
                        viewMatrix.TranslationVector -= new Vector3(0f, moveFactor * 2, 0f);
                    }
                    else
                    {
                        viewMatrix.TranslationVector += new Vector3(0f, 0f, 1) * moveFactor * 2;
                    }
                    break;

                // Up/Down and Left/Right - rotates around X / Y respectively
                // (Mouse wheel rotates around Z)
                case Keys.Down:
                    worldMatrix *= Matrix.RotationX(moveFactor);
                    rotation    += new Vector3(moveFactor, 0f, 0f);
                    break;

                case Keys.Up:
                    worldMatrix *= Matrix.RotationX(-moveFactor);
                    rotation    -= new Vector3(moveFactor, 0f, 0f);
                    break;

                case Keys.Left:
                    worldMatrix *= Matrix.RotationY(moveFactor);
                    rotation    += new Vector3(0f, moveFactor, 0f);
                    break;

                case Keys.Right:
                    worldMatrix *= Matrix.RotationY(-moveFactor);
                    rotation    -= new Vector3(0f, moveFactor, 0f);
                    break;

                case Keys.T:
                    fps.Show          = !fps.Show;
                    textRenderer.Show = !textRenderer.Show;
                    break;

                case Keys.B:
                    if (background == Color.White)
                    {
                        background = new Color(30, 30, 34);
                    }
                    else
                    {
                        background = Color.White;
                    }
                    break;

                case Keys.G:
                    axisGrid.Show = !axisGrid.Show;
                    break;

                case Keys.X:
                    // To test for correct resource recreation
                    // Simulate device reset or lost.
                    System.Diagnostics.Debug.WriteLine(SharpDX.Diagnostics.ObjectTracker.ReportActiveObjects());
                    DeviceManager.Initialize(DeviceManager.Dpi);
                    System.Diagnostics.Debug.WriteLine(SharpDX.Diagnostics.ObjectTracker.ReportActiveObjects());
                    break;

                case Keys.Z:
                    keyToggles[Keys.Z] = !keyToggles[Keys.Z];
                    if (keyToggles[Keys.Z])
                    {
                        context.PixelShader.Set(depthPixelShader);
                    }
                    else
                    {
                        context.PixelShader.Set(pixelShader);
                    }
                    break;

                case Keys.F:
                    keyToggles[Keys.F] = !keyToggles[Keys.F];
                    RasterizerStateDescription rasterDesc;
                    if (context.Rasterizer.State != null)
                    {
                        rasterDesc = context.Rasterizer.State.Description;
                    }
                    else
                    {
                        rasterDesc = new RasterizerStateDescription()
                        {
                            CullMode = CullMode.Back,
                            FillMode = FillMode.Solid
                        }
                    };
                    if (keyToggles[Keys.F])
                    {
                        rasterDesc.FillMode      = FillMode.Wireframe;
                        context.Rasterizer.State = ToDispose(new RasterizerState(context.Device, rasterDesc));
                    }
                    else
                    {
                        rasterDesc.FillMode      = FillMode.Solid;
                        context.Rasterizer.State = ToDispose(new RasterizerState(context.Device, rasterDesc));
                    }
                    break;

                case Keys.D1:
                    context.PixelShader.Set(pixelShader);
                    break;

                case Keys.D2:
                    context.PixelShader.Set(lambertShader);
                    break;

                case Keys.D3:
                    context.PixelShader.Set(phongShader);
                    break;

                case Keys.D4:
                    context.PixelShader.Set(blinnPhongShader);
                    break;
                }

                updateText();
            };
            Window.KeyUp += (s, e) =>
            {
                // Clear the shift/ctrl keys so they aren't sticky
                if (e.KeyCode == Keys.ShiftKey)
                {
                    shiftKey = false;
                }
                if (e.KeyCode == Keys.ControlKey)
                {
                    ctrlKey = false;
                }
            };
            Window.MouseWheel += (s, e) =>
            {
                if (shiftKey)
                {
                    // Zoom in/out
                    viewMatrix.TranslationVector += new Vector3(0f, 0f, (e.Delta / 120f) * moveFactor * 2);
                }
                else
                {
                    // rotate around Z-axis
                    viewMatrix *= Matrix.RotationZ((e.Delta / 120f) * moveFactor);
                    rotation   += new Vector3(0f, 0f, (e.Delta / 120f) * moveFactor);
                }
                updateText();
            };

            var lastX = 0;
            var lastY = 0;

            Window.MouseDown += (s, e) =>
            {
                if (e.Button == MouseButtons.Left)
                {
                    lastX = e.X;
                    lastY = e.Y;
                }
            };

            Window.MouseMove += (s, e) =>
            {
                if (e.Button == MouseButtons.Left)
                {
                    var yRotate = lastX - e.X;
                    var xRotate = lastY - e.Y;
                    lastY = e.Y;
                    lastX = e.X;

                    // Mouse move changes
                    viewMatrix *= Matrix.RotationX(-xRotate * moveFactor);
                    viewMatrix *= Matrix.RotationY(-yRotate * moveFactor);

                    updateText();
                }
            };

            // Display instructions with initial values
            updateText();

            #endregion

            var clock = new System.Diagnostics.Stopwatch();
            clock.Start();

            #region Render loop

            // Create and run the render loop
            RenderLoop.Run(Window, () =>
            {
                // Start of frame:

                // Retrieve immediate context
                var context = DeviceManager.Direct3DContext;

                // Clear depth stencil view
                context.ClearDepthStencilView(DepthStencilView, DepthStencilClearFlags.Depth | DepthStencilClearFlags.Stencil, 1.0f, 0);
                // Clear render target view
                context.ClearRenderTargetView(RenderTargetView, background);

                // Create viewProjection matrix
                var viewProjection = Matrix.Multiply(viewMatrix, projectionMatrix);

                // Extract camera position from view
                var camPosition = Matrix.Transpose(Matrix.Invert(viewMatrix)).Column4;
                cameraPosition  = new Vector3(camPosition.X, camPosition.Y, camPosition.Z);

                // If Keys.CtrlKey is down, auto rotate viewProjection based on time
                var time = clock.ElapsedMilliseconds / 1000.0f;
                if (ctrlKey)
                {
                    viewProjection = Matrix.RotationY(time * 1.8f) * Matrix.RotationX(time * 1f) * Matrix.RotationZ(time * 0.6f) * viewProjection;
                }
                var worldRotation = Matrix.RotationAxis(Vector3.UnitY, time);

                var perFrame             = new ConstantBuffers.PerFrame();
                perFrame.Light.Color     = new Color(0.8f, 0.8f, 0.8f, 1.0f);
                var lightDir             = Vector3.Transform(new Vector3(1f, -1f, -1f), worldMatrix);
                perFrame.Light.Direction = new Vector3(lightDir.X, lightDir.Y, lightDir.Z);// new Vector3(Vector3.Transform(new Vector3(1f, -1f, 1f), worldMatrix * worldRotation).ToArray().Take(3).ToArray());
                perFrame.CameraPosition  = cameraPosition;
                context.UpdateSubresource(ref perFrame, perFrameBuffer);

                // Render each object

                var perMaterial           = new ConstantBuffers.PerMaterial();
                perMaterial.Ambient       = new Color4(0.2f);
                perMaterial.Diffuse       = Color.White;
                perMaterial.Emissive      = new Color4(0);
                perMaterial.Specular      = Color.White;
                perMaterial.SpecularPower = 20f;
                perMaterial.HasTexture    = 0;
                perMaterial.UVTransform   = Matrix.Identity;
                context.UpdateSubresource(ref perMaterial, perMaterialBuffer);

                var perObject = new ConstantBuffers.PerObject();

                foreach (var m in meshes)
                {
                    // MESH
                    perObject.World = m.World * worldMatrix;
                    perObject.WorldInverseTranspose = Matrix.Transpose(Matrix.Invert(perObject.World));
                    perObject.WorldViewProjection   = perObject.World * viewProjection;
                    perObject.Transpose();
                    context.UpdateSubresource(ref perObject, perObjectBuffer);

                    // Provide the material constant buffer to the mesh renderer
                    m.PerMaterialBuffer = perMaterialBuffer;
                    m.PerArmatureBuffer = perArmatureBuffer;
                    m.Render();
                }

                // AXIS GRID
                using (var prevPixelShader = context.PixelShader.Get())
                {
                    perMaterial.HasTexture  = 0;
                    perMaterial.UVTransform = Matrix.Identity;
                    context.UpdateSubresource(ref perMaterial, perMaterialBuffer);
                    context.PixelShader.Set(pixelShader);
                    perObject.World = worldMatrix;
                    perObject.WorldInverseTranspose = Matrix.Transpose(Matrix.Invert(perObject.World));
                    perObject.WorldViewProjection   = perObject.World * viewProjection;
                    perObject.Transpose();
                    context.UpdateSubresource(ref perObject, perObjectBuffer);
                    axisGrid.Render();
                    context.PixelShader.Set(prevPixelShader);
                }

                // Render FPS
                fps.Render();

                // Render instructions + position changes
                textRenderer.Render();

                // Present the frame
                Present();
            });
            #endregion
        }
Exemple #2
0
        protected override void DoRender()
        {
            // Retrieve device context
            var context = this.DeviceManager.Direct3DContext;

            // Calculate skin matrices for each bone
            ConstantBuffers.PerArmature skinMatrices = new ConstantBuffers.PerArmature();
            if (mesh.Bones != null)
            {
                // Retrieve each bone's local transform
                for (var i = 0; i < mesh.Bones.Count; i++)
                {
                    skinMatrices.Bones[i] = mesh.Bones[i].BoneLocalTransform;
                }

                // TODO: Load bone transforms from animation frames here

                // Apply parent bone transforms
                // We assume here that the first bone has no parent
                // and that each parent bone appears before children
                for (var i = 1; i < mesh.Bones.Count; i++)
                {
                    var bone = mesh.Bones[i];
                    // ParentIndex == -1 means root bone
                    if (bone.ParentIndex > -1)
                    {
                        var parentTransform = skinMatrices.Bones[bone.ParentIndex];
                        skinMatrices.Bones[i] = (skinMatrices.Bones[i] * parentTransform);
                    }
                }

                // Change the bone transform from rest pose space into bone space (using the inverse of the bind/rest pose)
                for (var i = 0; i < mesh.Bones.Count; i++)
                {
                    skinMatrices.Bones[i] = Matrix.Transpose(mesh.Bones[i].InvBindPose * skinMatrices.Bones[i]);
                }

                // TODO: Check need to loop animation here
            }

            // Update the constant buffer with the skin matrices for each bone
            context.UpdateSubresource(skinMatrices.Bones, PerArmatureBuffer);

            // Draw sub-meshes grouped by material
            for (var mIndx = 0; mIndx < mesh.Materials.Count; mIndx++)
            {
                // Retrieve sub meshes for this material
                var subMeshesForMaterial =
                    (from sm in mesh.SubMeshes
                     where sm.MaterialIndex == mIndx
                     select sm).ToArray();

                // If the material buffer is available and there are submeshes
                // using the material update the PerMaterialBuffer
                if (PerMaterialBuffer != null && subMeshesForMaterial.Length > 0)
                {
                    // update the PerMaterialBuffer constant buffer
                    var material = new ConstantBuffers.PerMaterial()
                    {
                        Ambient       = new Color4(mesh.Materials[mIndx].Ambient),
                        Diffuse       = new Color4(mesh.Materials[mIndx].Diffuse),
                        Emissive      = new Color4(mesh.Materials[mIndx].Emissive),
                        Specular      = new Color4(mesh.Materials[mIndx].Specular),
                        SpecularPower = mesh.Materials[mIndx].SpecularPower,
                        UVTransform   = mesh.Materials[mIndx].UVTransform,
                    };

                    // Bind textures to the pixel shader
                    int texIndxOffset = mIndx * Common.Mesh.MaxTextures;
                    material.HasTexture = (uint)(textureViews[texIndxOffset] != null ? 1 : 0); // 0=false
                    context.PixelShader.SetShaderResources(0, textureViews.GetRange(texIndxOffset, Common.Mesh.MaxTextures).ToArray());

                    // Set texture sampler state
                    context.PixelShader.SetSampler(0, samplerState);

                    // Update material buffer
                    context.UpdateSubresource(ref material, PerMaterialBuffer);
                }

                // For each sub-mesh
                foreach (var subMesh in subMeshesForMaterial)
                {
                    // Ensure the vertex buffer and index buffers are in range
                    if (subMesh.VertexBufferIndex < vertexBuffers.Count && subMesh.IndexBufferIndex < indexBuffers.Count)
                    {
                        // Retrieve and set the vertex and index buffers
                        var vertexBuffer = vertexBuffers[(int)subMesh.VertexBufferIndex];
                        context.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(vertexBuffer, Utilities.SizeOf <Vertex>(), 0));
                        context.InputAssembler.SetIndexBuffer(indexBuffers[(int)subMesh.IndexBufferIndex], Format.R16_UInt, 0);
                        // Set topology
                        context.InputAssembler.PrimitiveTopology = SharpDX.Direct3D.PrimitiveTopology.TriangleList;
                    }

                    // Draw the sub-mesh (includes Primitive count which we multiply by 3)
                    // The submesh also includes a start index into the vertex buffer
                    context.DrawIndexed((int)subMesh.PrimCount * 3, (int)subMesh.StartIndex, 0);
                }
            }

            // If there are no materials
            if (mesh.Materials.Count == 0)
            {
                foreach (var subMesh in mesh.SubMeshes)
                {
                    // Ensure the vertex buffer and index buffers are in range
                    if (subMesh.VertexBufferIndex < vertexBuffers.Count && subMesh.IndexBufferIndex < indexBuffers.Count)
                    {
                        // Retrieve and set the vertex and index buffers
                        var vertexBuffer = vertexBuffers[(int)subMesh.VertexBufferIndex];
                        context.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(vertexBuffer, Utilities.SizeOf <Vertex>(), 0));
                        context.InputAssembler.SetIndexBuffer(indexBuffers[(int)subMesh.IndexBufferIndex], Format.R16_UInt, 0);
                        // Set topology
                        context.InputAssembler.PrimitiveTopology = SharpDX.Direct3D.PrimitiveTopology.TriangleList;
                    }

                    // Draw the sub-mesh (includes Primitive count which we multiply by 3)
                    // The submesh also includes a start index into the vertex buffer
                    context.DrawIndexed((int)subMesh.PrimCount * 3, (int)subMesh.StartIndex, 0);
                }
            }
        }