protected override void DoRender()
{
// Calculate elapsed seconds
var time = clock.ElapsedMilliseconds / 1000.0f;
// 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;
}
// Load bone transforms from animation frames
if (CurrentAnimation.HasValue)
{
// Keep track of the last key-frame used for each bone
Mesh.Keyframe?[] lastKeyForBones = new Mesh.Keyframe?[mesh.Bones.Count];
// Keep track of whether a bone has been interpolated
bool[] lerpedBones = new bool[mesh.Bones.Count];
for (var i = 0; i < CurrentAnimation.Value.Keyframes.Count; i++)
{
// Retrieve current key-frame
var frame = CurrentAnimation.Value.Keyframes[i];
// If the current frame is not in the future
if (frame.Time <= time)
{
// Keep track of last key-frame for bone
lastKeyForBones[frame.BoneIndex] = frame;
// Retrieve transform from current key-frame
skinMatrices.Bones[frame.BoneIndex] = frame.Transform;
}
// Frame is in the future, check if we should interpolate
else
{
// Only interpolate a bone's key-frames ONCE
if (!lerpedBones[frame.BoneIndex])
{
// Retrieve the previous key-frame if exists
Mesh.Keyframe prevFrame;
if (lastKeyForBones[frame.BoneIndex] != null)
{
prevFrame = lastKeyForBones[frame.BoneIndex].Value;
}
else
{
continue; // nothing to interpolate
}
// Make sure we only interpolate with
// one future frame for this bone
lerpedBones[frame.BoneIndex] = true;
// Calculate time difference between frames
var frameLength = frame.Time - prevFrame.Time;
var timeDiff = time - prevFrame.Time;
var amount = timeDiff / frameLength;
// Interpolation using Lerp on scale and translation, and Slerp on Rotation (Quaternion)
Vector3 t1, t2; // Translation
Quaternion q1, q2; // Rotation
float s1, s2; // Scale
// Decompose the previous key-frame's transform
prevFrame.Transform.DecomposeUniformScale(out s1, out q1, out t1);
// Decompose the current key-frame's transform
frame.Transform.DecomposeUniformScale(out s2, out q2, out t2);
// Perform interpolation and reconstitute matrix
skinMatrices.Bones[frame.BoneIndex] =
Matrix.Scaling(MathUtil.Lerp(s1, s2, amount)) *
Matrix.RotationQuaternion(Quaternion.Slerp(q1, q2, amount)) *
Matrix.Translation(Vector3.Lerp(t1, t2, amount));
}
}
}
}
// 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];
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]);
}
// Check need to loop animation
if (!PlayOnce && CurrentAnimation.HasValue && CurrentAnimation.Value.EndTime <= time)
{
this.Clock.Restart();
}
}
// 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,
};
int texIndxOffset = mIndx * Common.Mesh.MaxTextures;
material.HasTexture = (uint)(textureViews[texIndxOffset] != null ? 1 : 0); // 0=false
material.HasNormalMap = (uint)(EnableNormalMap && textureViews[texIndxOffset + 1] != null ? 1 : 0); // 0=false
material.DisplaceScale = (textureViews[texIndxOffset + 2] != null ? DisplacementScale : 0);
material.DisplaceMidLevel = this.DisplaceMidLevel;
// Bind textures to the pixel shader
context.PixelShader.SetShaderResources(0, textureViews.GetRange(texIndxOffset, Common.Mesh.MaxTextures).ToArray());
// Set texture sampler state
context.PixelShader.SetSampler(0, samplerState);
if (material.DisplaceScale > 0)
{
context.DomainShader.SetShaderResources(0, textureViews[texIndxOffset + 2]);
context.DomainShader.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.PatchListWith3ControlPoints;
}
// 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);
}
}
}
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("Tree.cmo");
loadedMesh.AddRange(Common.Mesh.LoadFromFile("Plane.cmo"));
loadedMesh.AddRange(Common.Mesh.LoadFromFile("Cube.cmo"));
List<DisplacedMeshRenderer> meshes = new List<DisplacedMeshRenderer>();
meshes.AddRange((from mesh in loadedMesh
select ToDispose(new DisplacedMeshRenderer(mesh))));
foreach (var m in meshes) {
m.Initialize(this);
m.World = Matrix.Identity;
}
// Set the first animation as the current animation and start clock
foreach (var m in meshes)
{
if (m.Mesh.Animations != null && m.Mesh.Animations.Any())
m.CurrentAnimation = m.Mesh.Animations.First().Value;
m.Clock.Start();
}
var triangle = new TriangleRenderer();
triangle.Initialize(this);
// 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(0, 0, 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, 0.1f, 100f);
// Maintain the correct aspect ratio on resize
Window.Resize += (s, e) =>
{
projectionMatrix = Matrix.PerspectiveFovRH((float)Math.PI / 3f, Width / (float)Height, 0.1f, 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);
var tessellationFactor = 2f; // default to 5
var tessellationPartition = "Integer";
var tessellationMethod = "Phong";
var displacementScale = 0.02f;
// We will call this action to update text
// for the text renderer
Action updateText = () =>
{
textRenderer.Text =
String.Format("Tessellation Factor: {0:#0.0} (+/- to change)"
+ "\nPartitioning: {1} (F1,F2,F3,F4 to change)"
+ "\nTessellation: {2} (F5,F6,F7)"
+ "\nDisplacement: {3:#0.000} (Shift +/- to change)"
+ "\nPress F to toggle wireframe | Shift+N toggle Normal Map | N show normals"
+ "\nPress 1-4 to switch pixel shaders | Backspace to cycle meshes",
tessellationFactor,
tessellationPartition,
tessellationMethod,
displacementScale,
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;
var activeTriTessellator = tessellateTriIntegerShader;
var activePnTriTessellator = pnTriIntegerShader;
var usePhongTessellation = true;
var usePNTessellation = false;
var showNormals = false;
var enableNormalMap = true;
var meshIndex = 0;
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.P:
// Pause or resume mesh animation
meshes.ForEach(m => {
if (m.Clock.IsRunning)
m.Clock.Stop();
else
m.Clock.Start();
});
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.None,
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.N:
if (!shiftKey)
showNormals = !showNormals;
else
enableNormalMap = !enableNormalMap;
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;
case Keys.Add:
var multiple = 1.0f;
if (ctrlKey)
multiple = 3.0f;
if (!shiftKey)
{
tessellationFactor += 0.2f * multiple;
tessellationFactor = Math.Min(tessellationFactor, 64);
}
else
{
displacementScale += 0.005f * multiple;
}
break;
case Keys.Subtract:
multiple = 1.0f;
if (ctrlKey)
multiple = 3.0f;
if (!shiftKey)
{
tessellationFactor -= 0.2f * multiple;
tessellationFactor = Math.Max(tessellationFactor, 0);
}
else
{
displacementScale -= 0.005f * multiple;
}
break;
case Keys.F1:
tessellationPartition = "Integer";
activeTriTessellator = tessellateTriIntegerShader;
activePnTriTessellator = pnTriIntegerShader;
break;
case Keys.F2:
tessellationPartition = "Pow2";
activeTriTessellator = tessellateTriPow2Shader;
activePnTriTessellator = pnTriPow2Shader;
break;
case Keys.F3:
tessellationPartition = "Fractional Even";
activeTriTessellator = tessellateTriFractionalEvenShader;
activePnTriTessellator = pnTriFractionalEvenShader;
break;
case Keys.F4:
tessellationPartition = "Fractional Odd";
activeTriTessellator = tessellateTriFractionalOddShader;
activePnTriTessellator = pnTriFractionalOddShader;
break;
case Keys.F5:
usePhongTessellation = false;
usePNTessellation = false;
tessellationMethod = "Tri + displacement";
break;
case Keys.F6:
usePhongTessellation = true;
usePNTessellation = false;
tessellationMethod = "Phong + displacement";
break;
case Keys.F7:
usePhongTessellation = false;
usePNTessellation = true;
tessellationMethod = "PN-Triangle + displacement";
break;
case Keys.Back:
meshIndex = (meshIndex + 1) % meshes.Count;
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;
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;
perFrame.TessellationFactor = tessellationFactor;
context.UpdateSubresource(ref perFrame, perFrameBuffer);
// Set decal shader resource views
//context.PixelShader.SetShaderResources(3, decalDiffuse, decalNormal);
context.DomainShader.SetShaderResource(2, decalDisplacement);
// 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();
// MESH
context.VertexShader.Set(tessellateVertexShader);
context.HullShader.Set(activeTriTessellator);
if (usePhongTessellation)
{
context.DomainShader.Set(tessellatePhongDomainShader);
}
else if (usePNTessellation)
{
context.HullShader.Set(activePnTriTessellator);
context.DomainShader.Set(pnTriDomainShader);
}
else
context.DomainShader.Set(tessellateTriDomainShader);
var m = meshes[meshIndex];
//meshes.ForEach((m) =>
//{
// Assign decal textures
m.TextureViews[3] = decalDiffuse;
m.TextureViews[4] = decalNormal;
// Apply decal
var decal = new ConstantBuffers.DecalBuffer();
decal.DecalDisplaceScale = 0.10f;
var decalVectors = new Vector3[3];
if (meshIndex != 1)
{
Vector3.Orthonormalize(decalVectors, new[] { new Vector3(0, 0.5f, 0.5f), Vector3.UnitX, -Vector3.UnitY });
decal.DecalPosition = new Vector3(0, 1, 1);
}
else
{
Vector3.Orthonormalize(decalVectors, new[] { new Vector3(0, 0.5f, 0.2f), Vector3.UnitX, Vector3.UnitZ });
decal.DecalPosition = new Vector3(0, 0, 0);
}
decal.DecalNormal = decalVectors[0];
decal.DecalTangent = decalVectors[1]; // U-axis of tex
decal.DecalBitangent = decalVectors[2]; // V-axis of tex
decal.DecalRadius = 0.5f;
context.UpdateSubresource(ref decal, decalBuffer);
// TODO: set decal buffer on mouse click using "Picking"
// Provide the material constant buffer to the mesh renderer
perObject.World = m.World * worldMatrix;
perObject.WorldInverseTranspose = Matrix.Transpose(Matrix.Invert(perObject.World));
perObject.WorldViewProjection = perObject.World * viewProjection;
perObject.ViewProjection = viewProjection;
perObject.Transpose();
context.UpdateSubresource(ref perObject, perObjectBuffer);
m.EnableNormalMap = enableNormalMap;
m.DisplacementScale = displacementScale;
m.DisplaceMidLevel = 0.5f;
m.PerMaterialBuffer = perMaterialBuffer;
m.PerArmatureBuffer = perArmatureBuffer;
m.Render();
if (showNormals)
{
using (var prevPixelShader = context.PixelShader.Get())
{
perMaterial.HasTexture = 0;
perMaterial.UVTransform = Matrix.Identity;
context.UpdateSubresource(ref perMaterial, perMaterialBuffer);
context.PixelShader.Set(pixelShader);
context.GeometryShader.Set(debugNormals);
m.Render();
context.PixelShader.Set(prevPixelShader);
context.GeometryShader.Set(null);
}
}
//});
// TRIANGLE
//triangle.Render();
//// QUAD
//context.VertexShader.Set(tessellateVertexShader);
//context.HullShader.Set(activeQuadTessellator);
//context.DomainShader.Set(tessellateQuadDomainShader);
//quad.Render();
// BEZIER
//context.VertexShader.Set(tessellateVertexShader);
//context.HullShader.Set(activeBezierTessellator);
//context.DomainShader.Set(tessellateBezierDomainShader);
//bezier.Render();
// AXIS GRID
context.VertexShader.Set(vertexShader);
context.HullShader.Set(null);
context.DomainShader.Set(null);
context.GeometryShader.Set(null);
using (var prevPixelShader = context.PixelShader.Get())
{
perMaterial.HasTexture = 0;
perMaterial.UVTransform = Matrix.Identity;
context.UpdateSubresource(ref perMaterial, perMaterialBuffer);
context.PixelShader.Set(pixelShader);
perObject = new ConstantBuffers.PerObject();
perObject.World = worldMatrix;
perObject.WorldInverseTranspose = Matrix.Transpose(Matrix.Invert(perObject.World));
perObject.WorldViewProjection = perObject.World * viewProjection;
perObject.ViewProjection = 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
}
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("Tree.cmo");
loadedMesh.AddRange(Common.Mesh.LoadFromFile("Plane.cmo"));
loadedMesh.AddRange(Common.Mesh.LoadFromFile("Cube.cmo"));
List <DisplacedMeshRenderer> meshes = new List <DisplacedMeshRenderer>();
meshes.AddRange((from mesh in loadedMesh
select ToDispose(new DisplacedMeshRenderer(mesh))));
foreach (var m in meshes)
{
m.Initialize(this);
m.World = Matrix.Identity;
}
// Set the first animation as the current animation and start clock
foreach (var m in meshes)
{
if (m.Mesh.Animations != null && m.Mesh.Animations.Any())
{
m.CurrentAnimation = m.Mesh.Animations.First().Value;
}
m.Clock.Start();
}
var triangle = new TriangleRenderer();
triangle.Initialize(this);
// 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(0, 0, 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, 0.1f, 100f);
// Maintain the correct aspect ratio on resize
Window.Resize += (s, e) =>
{
projectionMatrix = Matrix.PerspectiveFovRH((float)Math.PI / 3f, Width / (float)Height, 0.1f, 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);
var tessellationFactor = 2f; // default to 5
var tessellationPartition = "Integer";
var tessellationMethod = "Phong";
var displacementScale = 0.02f;
// We will call this action to update text
// for the text renderer
Action updateText = () =>
{
textRenderer.Text =
String.Format("Tessellation Factor: {0:#0.0} (+/- to change)"
+ "\nPartitioning: {1} (F1,F2,F3,F4 to change)"
+ "\nTessellation: {2} (F5,F6,F7)"
+ "\nDisplacement: {3:#0.000} (Shift +/- to change)"
+ "\nPress F to toggle wireframe | Shift+N toggle Normal Map | N show normals"
+ "\nPress 1-4 to switch pixel shaders | Backspace to cycle meshes",
tessellationFactor,
tessellationPartition,
tessellationMethod,
displacementScale,
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;
var activeTriTessellator = tessellateTriIntegerShader;
var activePnTriTessellator = pnTriIntegerShader;
var usePhongTessellation = true;
var usePNTessellation = false;
var showNormals = false;
var enableNormalMap = true;
var meshIndex = 0;
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.P:
// Pause or resume mesh animation
meshes.ForEach(m => {
if (m.Clock.IsRunning)
{
m.Clock.Stop();
}
else
{
m.Clock.Start();
}
});
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.None,
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.N:
if (!shiftKey)
{
showNormals = !showNormals;
}
else
{
enableNormalMap = !enableNormalMap;
}
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;
case Keys.Add:
var multiple = 1.0f;
if (ctrlKey)
{
multiple = 3.0f;
}
if (!shiftKey)
{
tessellationFactor += 0.2f * multiple;
tessellationFactor = Math.Min(tessellationFactor, 64);
}
else
{
displacementScale += 0.005f * multiple;
}
break;
case Keys.Subtract:
multiple = 1.0f;
if (ctrlKey)
{
multiple = 3.0f;
}
if (!shiftKey)
{
tessellationFactor -= 0.2f * multiple;
tessellationFactor = Math.Max(tessellationFactor, 0);
}
else
{
displacementScale -= 0.005f * multiple;
}
break;
case Keys.F1:
tessellationPartition = "Integer";
activeTriTessellator = tessellateTriIntegerShader;
activePnTriTessellator = pnTriIntegerShader;
break;
case Keys.F2:
tessellationPartition = "Pow2";
activeTriTessellator = tessellateTriPow2Shader;
activePnTriTessellator = pnTriPow2Shader;
break;
case Keys.F3:
tessellationPartition = "Fractional Even";
activeTriTessellator = tessellateTriFractionalEvenShader;
activePnTriTessellator = pnTriFractionalEvenShader;
break;
case Keys.F4:
tessellationPartition = "Fractional Odd";
activeTriTessellator = tessellateTriFractionalOddShader;
activePnTriTessellator = pnTriFractionalOddShader;
break;
case Keys.F5:
usePhongTessellation = false;
usePNTessellation = false;
tessellationMethod = "Tri + displacement";
break;
case Keys.F6:
usePhongTessellation = true;
usePNTessellation = false;
tessellationMethod = "Phong + displacement";
break;
case Keys.F7:
usePhongTessellation = false;
usePNTessellation = true;
tessellationMethod = "PN-Triangle + displacement";
break;
case Keys.Back:
meshIndex = (meshIndex + 1) % meshes.Count;
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;
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;
perFrame.TessellationFactor = tessellationFactor;
context.UpdateSubresource(ref perFrame, perFrameBuffer);
// Set decal shader resource views
//context.PixelShader.SetShaderResources(3, decalDiffuse, decalNormal);
context.DomainShader.SetShaderResource(2, decalDisplacement);
// 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();
// MESH
context.VertexShader.Set(tessellateVertexShader);
context.HullShader.Set(activeTriTessellator);
if (usePhongTessellation)
{
context.DomainShader.Set(tessellatePhongDomainShader);
}
else if (usePNTessellation)
{
context.HullShader.Set(activePnTriTessellator);
context.DomainShader.Set(pnTriDomainShader);
}
else
{
context.DomainShader.Set(tessellateTriDomainShader);
}
var m = meshes[meshIndex];
//meshes.ForEach((m) =>
//{
// Assign decal textures
m.TextureViews[3] = decalDiffuse;
m.TextureViews[4] = decalNormal;
// Apply decal
var decal = new ConstantBuffers.DecalBuffer();
decal.DecalDisplaceScale = 0.10f;
var decalVectors = new Vector3[3];
if (meshIndex != 1)
{
Vector3.Orthonormalize(decalVectors, new[] { new Vector3(0, 0.5f, 0.5f), Vector3.UnitX, -Vector3.UnitY });
decal.DecalPosition = new Vector3(0, 1, 1);
}
else
{
Vector3.Orthonormalize(decalVectors, new[] { new Vector3(0, 0.5f, 0.2f), Vector3.UnitX, Vector3.UnitZ });
decal.DecalPosition = new Vector3(0, 0, 0);
}
decal.DecalNormal = decalVectors[0];
decal.DecalTangent = decalVectors[1]; // U-axis of tex
decal.DecalBitangent = decalVectors[2]; // V-axis of tex
decal.DecalRadius = 0.5f;
context.UpdateSubresource(ref decal, decalBuffer);
// TODO: set decal buffer on mouse click using "Picking"
// Provide the material constant buffer to the mesh renderer
perObject.World = m.World * worldMatrix;
perObject.WorldInverseTranspose = Matrix.Transpose(Matrix.Invert(perObject.World));
perObject.WorldViewProjection = perObject.World * viewProjection;
perObject.ViewProjection = viewProjection;
perObject.Transpose();
context.UpdateSubresource(ref perObject, perObjectBuffer);
m.EnableNormalMap = enableNormalMap;
m.DisplacementScale = displacementScale;
m.DisplaceMidLevel = 0.5f;
m.PerMaterialBuffer = perMaterialBuffer;
m.PerArmatureBuffer = perArmatureBuffer;
m.Render();
if (showNormals)
{
using (var prevPixelShader = context.PixelShader.Get())
{
perMaterial.HasTexture = 0;
perMaterial.UVTransform = Matrix.Identity;
context.UpdateSubresource(ref perMaterial, perMaterialBuffer);
context.PixelShader.Set(pixelShader);
context.GeometryShader.Set(debugNormals);
m.Render();
context.PixelShader.Set(prevPixelShader);
context.GeometryShader.Set(null);
}
}
//});
// TRIANGLE
//triangle.Render();
//// QUAD
//context.VertexShader.Set(tessellateVertexShader);
//context.HullShader.Set(activeQuadTessellator);
//context.DomainShader.Set(tessellateQuadDomainShader);
//quad.Render();
// BEZIER
//context.VertexShader.Set(tessellateVertexShader);
//context.HullShader.Set(activeBezierTessellator);
//context.DomainShader.Set(tessellateBezierDomainShader);
//bezier.Render();
// AXIS GRID
context.VertexShader.Set(vertexShader);
context.HullShader.Set(null);
context.DomainShader.Set(null);
context.GeometryShader.Set(null);
using (var prevPixelShader = context.PixelShader.Get())
{
perMaterial.HasTexture = 0;
perMaterial.UVTransform = Matrix.Identity;
context.UpdateSubresource(ref perMaterial, perMaterialBuffer);
context.PixelShader.Set(pixelShader);
perObject = new ConstantBuffers.PerObject();
perObject.World = worldMatrix;
perObject.WorldInverseTranspose = Matrix.Transpose(Matrix.Invert(perObject.World));
perObject.WorldViewProjection = perObject.World * viewProjection;
perObject.ViewProjection = 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
}
protected override void DoRender()
{
// Calculate elapsed seconds
var time = clock.ElapsedMilliseconds / 1000.0f;
// 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;
}
// Load bone transforms from animation frames
if (CurrentAnimation.HasValue)
{
// Keep track of the last key-frame used for each bone
Mesh.Keyframe?[] lastKeyForBones = new Mesh.Keyframe?[mesh.Bones.Count];
// Keep track of whether a bone has been interpolated
bool[] lerpedBones = new bool[mesh.Bones.Count];
for (var i = 0; i < CurrentAnimation.Value.Keyframes.Count; i++)
{
// Retrieve current key-frame
var frame = CurrentAnimation.Value.Keyframes[i];
// If the current frame is not in the future
if (frame.Time <= time)
{
// Keep track of last key-frame for bone
lastKeyForBones[frame.BoneIndex] = frame;
// Retrieve transform from current key-frame
skinMatrices.Bones[frame.BoneIndex] = frame.Transform;
}
// Frame is in the future, check if we should interpolate
else
{
// Only interpolate a bone's key-frames ONCE
if (!lerpedBones[frame.BoneIndex])
{
// Retrieve the previous key-frame if exists
Mesh.Keyframe prevFrame;
if (lastKeyForBones[frame.BoneIndex] != null)
prevFrame = lastKeyForBones[frame.BoneIndex].Value;
else
continue; // nothing to interpolate
// Make sure we only interpolate with
// one future frame for this bone
lerpedBones[frame.BoneIndex] = true;
// Calculate time difference between frames
var frameLength = frame.Time - prevFrame.Time;
var timeDiff = time - prevFrame.Time;
var amount = timeDiff / frameLength;
// Interpolation using Lerp on scale and translation, and Slerp on Rotation (Quaternion)
Vector3 t1, t2; // Translation
Quaternion q1, q2;// Rotation
float s1, s2; // Scale
// Decompose the previous key-frame's transform
prevFrame.Transform.DecomposeUniformScale(out s1, out q1, out t1);
// Decompose the current key-frame's transform
frame.Transform.DecomposeUniformScale(out s2, out q2, out t2);
// Perform interpolation and reconstitute matrix
skinMatrices.Bones[frame.BoneIndex] =
Matrix.Scaling(MathUtil.Lerp(s1, s2, amount)) *
Matrix.RotationQuaternion(Quaternion.Slerp(q1, q2, amount)) *
Matrix.Translation(Vector3.Lerp(t1, t2, amount));
}
}
}
}
// 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];
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]);
}
// Check need to loop animation
if (!PlayOnce && CurrentAnimation.HasValue && CurrentAnimation.Value.EndTime <= time)
{
this.Clock.Restart();
}
}
// 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,
};
int texIndxOffset = mIndx * Common.Mesh.MaxTextures;
material.HasTexture = (uint)(textureViews[texIndxOffset] != null ? 1 : 0); // 0=false
material.HasNormalMap = (uint)(EnableNormalMap && textureViews[texIndxOffset+1] != null ? 1 : 0); // 0=false
material.DisplaceScale = (textureViews[texIndxOffset+2] != null ? DisplacementScale : 0);
material.DisplaceMidLevel = this.DisplaceMidLevel;
// Bind textures to the pixel shader
context.PixelShader.SetShaderResources(0, textureViews.GetRange(texIndxOffset, Common.Mesh.MaxTextures).ToArray());
// Set texture sampler state
context.PixelShader.SetSampler(0, samplerState);
if (material.DisplaceScale > 0)
{
context.DomainShader.SetShaderResources(0, textureViews[texIndxOffset+2]);
context.DomainShader.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.PatchListWith3ControlPoints;
}
// 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);
}
}
}