private void SetCameraPose()
{
var vehiclePose = _vehicle.Pose;
if (_useSpectatorView)
{
// Spectator Mode:
// Camera is looking at the car from a fixed location in the level.
Vector3F position = new Vector3F(10, 8, 10);
Vector3F target = vehiclePose.Position;
Vector3F up = Vector3F.UnitY;
// Set the new camera view matrix. (Setting the View matrix changes the Pose.
// The pose is simply the inverse of the view matrix).
CameraNode.View = Matrix44F.CreateLookAt(position, target, up);
}
else
{
// Player Camera:
// Camera moves with the car. The look direction can be changed by moving the mouse.
Matrix33F yaw = Matrix33F.CreateRotationY(_yaw);
Matrix33F pitch = Matrix33F.CreateRotationX(_pitch);
Matrix33F orientation = vehiclePose.Orientation * yaw * pitch;
Vector3F forward = orientation * -Vector3F.UnitZ;
Vector3F up = Vector3F.UnitY;
Vector3F position = vehiclePose.Position - 10 * forward + 5 * up;
Vector3F target = vehiclePose.Position + 1 * up;
CameraNode.View = Matrix44F.CreateLookAt(position, target, up);
}
}
public override void Update(GameTime gameTime)
{
// Move the directional light in a circle.
float deltaTimeF = (float)gameTime.ElapsedGameTime.TotalSeconds;
_lightAngle += 0.3f * deltaTimeF;
var position = QuaternionF.CreateRotationY(_lightAngle).Rotate(new Vector3F(6, 6, 0));
// Make the light look at the world space origin.
var lightTarget = Vector3F.Zero;
var lookAtMatrix = Matrix44F.CreateLookAt(position, lightTarget, Vector3F.Up);
// A look-at matrix is the inverse of a normal world or pose matrix.
_mainDirectionalLightNode.PoseWorld =
new Pose(lookAtMatrix.Translation, lookAtMatrix.Minor).Inverse;
// Compute shadow matrix for the new light direction.
var lightRayDirection = (lightTarget - position);
_shadowMatrix = ProjectedShadowRenderer.CreateShadowMatrix(
new Plane(new Vector3F(0, 1, 0), 0.01f), new Vector4F(-lightRayDirection, 0));
// Update the scene - this must be called once per frame.
_scene.Update(gameTime.ElapsedGameTime);
base.Update(gameTime);
}
public void GetBoundsOrthographic()
{
// Get bounds of AABB in clip space. (Used in OcclusionCulling.fx.)
Vector3F cameraPosition = new Vector3F(100, -200, 345);
Vector3F cameraForward = new Vector3F(1, 2, 3).Normalized;
Vector3F cameraUp = new Vector3F(-1, 0.5f, -2).Normalized;
Matrix44F view = Matrix44F.CreateLookAt(cameraPosition, cameraPosition + cameraForward, cameraUp);
Matrix44F proj = Matrix44F.CreateOrthographic(16, 9, -10, 100);
Matrix44F viewProj = proj * view;
Vector3F center = new Vector3F();
Vector3F halfExtent = new Vector3F();
Aabb aabb = new Aabb(center - halfExtent, center + halfExtent);
Aabb aabb0, aabb1;
GetBoundsOrtho(aabb, viewProj, out aabb0);
GetBoundsOrthoSmart(aabb, viewProj, out aabb1);
Assert.IsTrue(Aabb.AreNumericallyEqual(aabb0, aabb1));
center = new Vector3F(-9, 20, -110);
halfExtent = new Vector3F(5, 2, 10);
aabb = new Aabb(center - halfExtent, center + halfExtent);
GetBoundsOrtho(aabb, viewProj, out aabb0);
GetBoundsOrthoSmart(aabb, viewProj, out aabb1);
Assert.IsTrue(Aabb.AreNumericallyEqual(aabb0, aabb1));
}
public MyGraphicsScreen(IGraphicsService graphicsService)
: base(graphicsService)
{
_meshRenderer = new MeshRenderer();
var contentManager = ServiceLocator.Current.GetInstance <ContentManager>();
var spriteFont = contentManager.Load <SpriteFont>("SpriteFont1");
_debugRenderer = new DebugRenderer(graphicsService, spriteFont);
Scene = new Scene();
// Add a camera with a perspective projection.
var projection = new PerspectiveProjection();
projection.SetFieldOfView(
ConstantsF.PiOver4,
graphicsService.GraphicsDevice.Viewport.AspectRatio,
0.1f,
100.0f);
CameraNode = new CameraNode(new Camera(projection))
{
Name = "CameraPerspective",
PoseWorld = Pose.FromMatrix(Matrix44F.CreateLookAt(new Vector3F(10, 5, 10), new Vector3F(0, 1, 0), new Vector3F(0, 1, 0)).Inverse),
};
Scene.Children.Add(CameraNode);
}
public WpRagdollSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.ClearBackground = true;
GraphicsScreen.BackgroundColor = Color.CornflowerBlue;
// Set a fixed camera.
var projection = new PerspectiveProjection();
projection.SetFieldOfView(
MathHelper.ToRadians(30),
GraphicsService.GraphicsDevice.Viewport.AspectRatio,
1f,
100.0f);
Vector3F cameraTarget = new Vector3F(0, 1, 0);
Vector3F cameraPosition = new Vector3F(0, 12, 0);
Vector3F cameraUpVector = new Vector3F(0, 0, -1);
GraphicsScreen.CameraNode = new CameraNode(new Camera(projection))
{
View = Matrix44F.CreateLookAt(cameraPosition, cameraTarget, cameraUpVector),
};
InitializePhysics();
}
/// <summary>
/// Changes the camera based on the tilt of the Windows Phone.
/// </summary>
/// <param name="deltaTime">The elapsed time since the last call of <see cref="Update"/>.</param>
private void TiltCamera(TimeSpan deltaTime)
{
// (Note: We use DigitalRune Mathematics instead of the XNA math types - mainly because
// DigitalRune Mathematics provides a 3x3 matrix to describe rotations and the QuaternionF
// provides a nice helper function to create a rotation from two given vectors.
//
// Please note that DigitalRune Mathematics uses column vectors whereas XNA uses row vectors.
// When using Vector3F and Matrix33F we need to multiple them in this order: v' = M * v.
// When using Vector3 and Matrix we need to multiple them in this order: v' = v * M.)
// Get accelerometer value transformed into world space.
Vector3F accelerometerVector = new Vector3F(
-InputService.AccelerometerValue.Y,
InputService.AccelerometerValue.Z,
-InputService.AccelerometerValue.X);
// Run the accelerometer signal through a low-pass filter to remove noise and jitter.
Vector3F currentGravityDirection = _lowPassFilter.Filter(accelerometerVector, (float)deltaTime.TotalSeconds);
Matrix33F cameraTilt;
if (!currentGravityDirection.IsNumericallyZero)
{
// We have some valid sensor readings.
// Let's compute the tilt of the camera. When the phone is lying flat on a table the camera
// looks down onto the scene. When the phone is tilted we want to rotate the position of
// the camera. QuaternionF contains a useful helper function that creates a rotation from
// two given directions - exactly what we need here.
cameraTilt = QuaternionF.CreateRotation(currentGravityDirection, new Vector3F(0, -1, 0)).ToRotationMatrix33();
}
else
{
// Current acceleration is nearly (0, 0, 0). We cannot infer any useful direction from
// this vector. Reset the camera tilt.
cameraTilt = Matrix33F.Identity;
}
// ----- Set up the view matrix (= the position and orientation of the camera).
Vector3F cameraTarget = new Vector3F(0, 2, 0); // That's were the camera is looking at.
Vector3F cameraPosition = new Vector3F(0, _cameraDistance, 0); // That's the default position of the camera.
Vector3F cameraUpVector = new Vector3F(0, 0, -1); // That's the up-vector of the camera.
// Apply the camera tilt to the position and orientation.
cameraPosition = cameraTilt * cameraPosition;
cameraUpVector = cameraTilt * cameraUpVector;
// Keep the camera above the ground.
cameraPosition.Y = Math.Max(0.5f, cameraPosition.Y);
// Create the view matrix from these points.
GraphicsScreen.CameraNode.View = Matrix44F.CreateLookAt(cameraPosition, cameraTarget, cameraUpVector);
// Save the camera position because it is required for hit-testing in DragBodies().
_cameraPosition = cameraPosition;
}
public override void Update(GameTime gameTime)
{
// This sample clears the debug renderer each frame.
_graphicsScreen.DebugRenderer.Clear();
// A second camera for player B.
var totalTime = (float)gameTime.TotalGameTime.TotalSeconds;
var position = Matrix33F.CreateRotationY(totalTime * 0.1f) * new Vector3F(4, 2, 4);
_cameraNodeB.View = Matrix44F.CreateLookAt(position, new Vector3F(0, 0, 0), new Vector3F(0, 1, 0));
}
/// <summary>
/// Positions the camera so that it sees the whole model and is not to near or to far away.
/// </summary>
private void ResetCameraPose()
{
if (ModelNode == null && Document.Model == null)
{
var lookAtMatrix = Matrix44F.CreateLookAt(new Vector3F(10, 10, 10), new Vector3F(0, 1, 0), new Vector3F(0, 1, 0));
_cameraNode.PoseWorld = Pose.FromMatrix(lookAtMatrix).Inverse;
ModelCenter = new Vector3F(0, 1, 0);
MoveSpeed = 5;
ZoomSpeed = MoveSpeed / 10;
return;
}
// Get combined AABB of scene nodes.
Aabb aabb = new Aabb();
if (ModelNode != null)
{
foreach (var meshNode in ModelNode.GetSubtree().OfType <MeshNode>())
{
aabb.Grow(meshNode.Aabb);
}
}
else
{
Matrix[] boneTransforms = new Matrix[Document.Model.Bones.Count];
Document.Model.CopyAbsoluteBoneTransformsTo(boneTransforms);
foreach (var mesh in Document.Model.Meshes)
{
var sphere = mesh.BoundingSphere;
sphere = sphere.Transform(boneTransforms[mesh.ParentBone.Index]);
var partCenter = (Vector3F)sphere.Center;
var partRadius = new Vector3F(sphere.Radius);
aabb.Grow(new Aabb(partCenter - partRadius, partCenter + partRadius));
}
}
// Set camera position.
var center = aabb.Center;
var radius = aabb.Extent.Length / 2;
var gamma = _cameraNode.Camera.Projection.FieldOfViewY / 2;
var distance = Math.Max((float)(radius / Math.Tan(gamma)) * 0.7f, 1); // * 0.x to move a bit closer otherwise distance is usually to large.
_cameraNode.PoseWorld = Pose.FromMatrix(
Matrix44F.CreateLookAt(center + new Vector3F(distance), center, Vector3F.Up)).Inverse;
// Center for camera orbiting.
ModelCenter = center;
// Make navigation speed relative to model size.
MoveSpeed = Math.Max(radius * 4, 1);
ZoomSpeed = MoveSpeed / 10;
}
protected override void OnUpdate(TimeSpan deltaTime)
{
// Rotate camera around origin.
_cameraRotation += 0.1f * (float)deltaTime.TotalSeconds;
var cameraPosition = Matrix33F.CreateRotationY(_cameraRotation) * new Vector3F(10, 5, 10);
var targetPosition = new Vector3F(0, 1, 0);
var up = new Vector3F(0, 1, 0);
var viewMatrix = Matrix44F.CreateLookAt(cameraPosition, targetPosition, up);
CameraNode.PoseWorld = Pose.FromMatrix(viewMatrix.Inverse);
Scene.Update(deltaTime);
}
/// <summary>
/// Moves and rotates the scene node so that it faces a certain direction (in world space).
/// </summary>
/// <param name="node">The scene node.</param>
/// <param name="position">The new position in world space.</param>
/// <param name="target">
/// The target coordinates in world space at which the scene node is "looking".
/// </param>
/// <param name="upVector">
/// The direction that is "up" from the scene node's point of view given in world space. (Does
/// not need to be normalized.)
/// </param>
/// <remarks>
/// A scene node uses the same coordinate system as the <strong>XNA Framework</strong>:
/// By default, the positive x-axis points to the right, the positive y-axis points up, and the
/// positive z-axis points towards the viewer. This method moves the scene node to
/// <paramref name="position"/> and rotates it so that its local forward direction (0, 0, -1) is
/// pointing towards <paramref name="target"/>.
/// </remarks>
/// <exception cref="ArgumentNullException">
/// <paramref name="node"/> is <see langword="null"/>.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="position"/> is the same as <paramref name="target"/>.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="upVector"/> is (0, 0, 0).
/// </exception>
/// <exception cref="DivideByZeroException">
/// The camera direction (<paramref name="target"/> - <paramref name="position"/>) is probably
/// pointing in the same or opposite direction as <paramref name="upVector"/>. (The two vectors
/// must not be parallel.)
/// </exception>
public static void LookAt(this SceneNode node, Vector3F position, Vector3F target, Vector3F upVector)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
Matrix44F view = Matrix44F.CreateLookAt(position, target, upVector);
Matrix44F viewInverse = view.Inverse;
QuaternionF orientation = QuaternionF.CreateRotation(viewInverse.Minor);
node.PoseWorld = new Pose(position, orientation);
}
public void GetBoundsPerspective()
{
// Get bounds of AABB in clip space. (Used in OcclusionCulling.fx.)
// Note: Z = 0 or negative is handled conservatively. Point (0, 0, 0) is returned.
Vector3F cameraPosition = new Vector3F(100, -200, 345);
Vector3F cameraForward = new Vector3F(1, 2, 3).Normalized;
Vector3F cameraUp = new Vector3F(-1, 0.5f, -2).Normalized;
Matrix44F view = Matrix44F.CreateLookAt(cameraPosition, cameraPosition + cameraForward, cameraUp);
Matrix44F proj = Matrix44F.CreatePerspectiveFieldOfView(MathHelper.ToRadians(90), 16.0f / 9.0f, 1, 100);
Matrix44F viewProj = proj * view;
// Empty AABB at center of near plane.
Vector3F center = cameraPosition + cameraForward;
Vector3F halfExtent = new Vector3F();
Aabb aabb = new Aabb(center - halfExtent, center + halfExtent);
Aabb aabb0, aabb1;
GetBoundsPersp(aabb, viewProj, out aabb0);
GetBoundsPerspSmart(aabb, viewProj, out aabb1);
Assert.IsTrue(Aabb.AreNumericallyEqual(aabb0, aabb1));
// AABB inside frustum.
center = view.Inverse.TransformPosition(new Vector3F(2, -3, -50));
halfExtent = new Vector3F(1, 6, 10);
aabb = new Aabb(center - halfExtent, center + halfExtent);
GetBoundsPersp(aabb, viewProj, out aabb0);
GetBoundsPerspSmart(aabb, viewProj, out aabb1);
Assert.IsTrue(Aabb.AreNumericallyEqual(aabb0, aabb1));
// Behind camera.
center = view.Inverse.TransformPosition(new Vector3F(2, -3, 50));
halfExtent = new Vector3F(1, 6, 10);
aabb = new Aabb(center - halfExtent, center + halfExtent);
GetBoundsPersp(aabb, viewProj, out aabb0);
GetBoundsPerspSmart(aabb, viewProj, out aabb1);
Assert.IsTrue(Aabb.AreNumericallyEqual(aabb0, aabb1));
// Camera inside AABB.
center = view.Inverse.TransformPosition(new Vector3F(2, -3, -50));
halfExtent = new Vector3F(100, 100, 100);
aabb = new Aabb(center - halfExtent, center + halfExtent);
GetBoundsPersp(aabb, viewProj, out aabb0);
GetBoundsPerspSmart(aabb, viewProj, out aabb1);
Assert.IsTrue(Aabb.AreNumericallyEqual(aabb0, aabb1));
}
public void InverseViewTest()
{
CameraInstance cameraInstance = new CameraInstance(new Camera(new PerspectiveProjection()));
Assert.AreEqual(Matrix44F.Identity, cameraInstance.View);
Assert.AreEqual(Matrix44F.Identity, cameraInstance.ViewInverse);
Vector3F position = new Vector3F(1, 2, 3);
Vector3F target = new Vector3F(2, 5, 4);
Vector3F upVector = new Vector3F(1, 1, 1);
Matrix44F view = Matrix44F.CreateLookAt(position, target, upVector);
cameraInstance.ViewInverse = view.Inverse;
Assert.IsTrue(Matrix44F.AreNumericallyEqual(view, cameraInstance.View));
Assert.IsTrue(Matrix44F.AreNumericallyEqual(view.Inverse, cameraInstance.ViewInverse));
Assert.IsTrue(Matrix44F.AreNumericallyEqual(view.Inverse, cameraInstance.PoseWorld.ToMatrix44F()));
}
public WindowsPhoneSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.ClearBackground = true;
GraphicsScreen.BackgroundColor = Color.CornflowerBlue;
// Set a fixed camera.
var projection = new PerspectiveProjection();
projection.SetFieldOfView(
MathHelper.ToRadians(30),
GraphicsService.GraphicsDevice.Viewport.AspectRatio,
1f,
1000.0f);
Vector3F cameraTarget = new Vector3F(0, 1, 0);
Vector3F cameraPosition = new Vector3F(0, 12, 0);
Vector3F cameraUpVector = new Vector3F(0, 0, -1);
GraphicsScreen.CameraNode = new CameraNode(new Camera(projection))
{
View = Matrix44F.CreateLookAt(cameraPosition, cameraTarget, cameraUpVector),
};
// We use the accelerometer to control the camera view. The accelerometer registers every
// little change, but we do not want a shaky camera. We can use a low-pass filter to smooth
// the sensor signal.
_lowPassFilter = new LowPassFilter(new Vector3F(0, -1, 0))
{
TimeConstant = 0.15f, // Let's try a time constant of 0.15 seconds.
// When increasing the time constant the camera becomes more stable,
// but also slower.
};
// Enable touch gestures
_originalEnabledGestures = TouchPanel.EnabledGestures;
TouchPanel.EnabledGestures =
GestureType.Tap // Tap is used to drop new bodies.
| GestureType.Flick // Flick creates an explosion.
| GestureType.Hold // Hold to clear the scene.
| GestureType.Pinch; // Pinch can be used to zoom in or out.
InitializePhysics();
}
public void LookAtTest()
{
CameraInstance cameraInstance = new CameraInstance(new Camera(new PerspectiveProjection()));
Vector3F position = new Vector3F(1, 2, 3);
Vector3F target = new Vector3F(2, 5, 4);
Vector3F upVector = new Vector3F(1, 1, 1);
cameraInstance.PoseWorld = new Pose(new Vector3F(1, 2, 3));
Matrix44F expected = Matrix44F.CreateLookAt(position, target, upVector);
cameraInstance.LookAt(target, upVector);
Assert.That(Matrix44F.AreNumericallyEqual(expected, cameraInstance.View));
position = new Vector3F(-2, 3, -7.5f);
expected = Matrix44F.CreateLookAt(position, target, upVector);
cameraInstance.LookAt(position, target, upVector);
Assert.That(Vector3F.AreNumericallyEqual(position, cameraInstance.PoseWorld.Position));
Assert.That(Matrix44F.AreNumericallyEqual(expected, cameraInstance.View));
}
public void UnprojectTest()
{
Viewport viewport = new Viewport(0, 0, 640, 480);
PerspectiveProjection projection = new PerspectiveProjection();
projection.SetFieldOfView(MathHelper.ToRadians(60), viewport.AspectRatio, 10, 1000);
Matrix44F view = Matrix44F.CreateLookAt(new Vector3F(0, 0, 0), new Vector3F(0, 0, -1), Vector3F.Up);
Assert.IsTrue(Vector3F.AreNumericallyEqual(new Vector3F(0, 0, -10), viewport.Unproject(new Vector3F(320, 240, 0), projection, view)));
Assert.IsTrue(Vector3F.AreNumericallyEqual(new Vector3F(projection.Left, projection.Top, -10), viewport.Unproject(new Vector3F(0, 0, 0), projection, view)));
Assert.IsTrue(Vector3F.AreNumericallyEqual(new Vector3F(projection.Right, projection.Top, -10), viewport.Unproject(new Vector3F(640, 0, 0), projection, view)));
Assert.IsTrue(Vector3F.AreNumericallyEqual(new Vector3F(projection.Left, projection.Bottom, -10), viewport.Unproject(new Vector3F(0, 480, 0), projection, view)));
Assert.IsTrue(Vector3F.AreNumericallyEqual(new Vector3F(projection.Right, projection.Bottom, -10), viewport.Unproject(new Vector3F(640, 480, 0), projection, view)));
Vector3[] farCorners = new Vector3[4];
GraphicsHelper.GetFrustumFarCorners(projection, farCorners);
Assert.IsTrue(Vector3F.AreNumericallyEqual((Vector3F)farCorners[0], viewport.Unproject(new Vector3F(0, 0, 1), projection, view)));
Assert.IsTrue(Vector3F.AreNumericallyEqual((Vector3F)farCorners[1], viewport.Unproject(new Vector3F(640, 0, 1), projection, view)));
Assert.IsTrue(Vector3F.AreNumericallyEqual((Vector3F)farCorners[2], viewport.Unproject(new Vector3F(0, 480, 1), projection, view)));
Assert.IsTrue(Vector3F.AreNumericallyEqual((Vector3F)farCorners[3], viewport.Unproject(new Vector3F(640, 480, 1), projection, view)));
}
public void ViewTest()
{
CameraInstance cameraInstance = new CameraInstance(new Camera(new PerspectiveProjection()));
Assert.AreEqual(Matrix44F.Identity, cameraInstance.View);
Assert.AreEqual(Matrix44F.Identity, cameraInstance.ViewInverse);
Vector3F position = new Vector3F(1, 2, 3);
Vector3F target = new Vector3F(2, 5, 4);
Vector3F upVector = new Vector3F(1, 1, 1);
Matrix44F view = Matrix44F.CreateLookAt(position, target, upVector);
cameraInstance.View = view;
Assert.AreEqual(view, cameraInstance.View);
Assert.AreEqual(view.Inverse, cameraInstance.ViewInverse);
Vector3F originOfCamera = cameraInstance.PoseWorld.Position;
originOfCamera = cameraInstance.View.TransformPosition(originOfCamera);
Assert.IsTrue(Vector3F.AreNumericallyEqual(Vector3F.Zero, originOfCamera));
Vector4F positionView = new Vector4F(0, 0, -1, 1);
Vector4F positionView2;
// Transform a point from view space to world space.
Vector4F positionWorld = cameraInstance.PoseWorld * positionView;
Vector4F positionWorld2 = cameraInstance.ViewInverse * positionView;
Assert.IsTrue(Vector4F.AreNumericallyEqual(positionWorld, positionWorld2));
// Transform a point from world space to view space.
positionView = cameraInstance.PoseWorld.Inverse * positionWorld;
positionView2 = cameraInstance.View * positionWorld;
Assert.IsTrue(Vector4F.AreNumericallyEqual(positionView, positionView2));
cameraInstance.View = Matrix44F.Identity;
Assert.AreEqual(Vector3F.Zero, cameraInstance.PoseWorld.Position);
Assert.AreEqual(Matrix33F.Identity, cameraInstance.PoseWorld.Orientation);
}
public override void Update(GameTime gameTime)
{
// Move the directional light in a circle.
float deltaTimeF = (float)gameTime.ElapsedGameTime.TotalSeconds;
_lightAngle += 0.3f * deltaTimeF;
var position = QuaternionF.CreateRotationY(_lightAngle).Rotate(new Vector3F(6, 6, 0));
// Make the light look at the world space origin.
var lightTarget = Vector3F.Zero;
var lookAtMatrix = Matrix44F.CreateLookAt(position, lightTarget, Vector3F.Up);
// A look-at matrix is the inverse of a normal world or pose matrix.
_mainDirectionalLightNode.PoseWorld =
new Pose(lookAtMatrix.Translation, lookAtMatrix.Minor).Inverse;
// Update the light position of the renderer.
// To create a local light shadow (light rays are not parallel), we have to set the light
// position and a 4th component of 1.
//_projectedShadowRenderer.LightPosition = new Vector4F(position, 1);
// To create a directional light shadow (light rays are parallel), we have to set the inverse
// light direction and 0.
var lightRayDirection = (lightTarget - position);
_projectedShadowRenderer.LightPosition = new Vector4F(-lightRayDirection, 0);
// For debugging: Draw coordinate axes at (0, 0, 0).
_debugRenderer.Clear();
_debugRenderer.DrawAxes(Pose.Identity, 1, true);
// Draw light node. (Will be drawn as a coordinate cross.)
_debugRenderer.DrawObject(_mainDirectionalLightNode, Color.Yellow, false, true);
// Update the scene - this must be called once per frame.
_scene.Update(gameTime.ElapsedGameTime);
base.Update(gameTime);
}
private bool _cullingEnabled = true; // True to use frustum culling. False to disable frustum culling.
public FrustumCullingSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
GraphicsScreen.ClearBackground = true;
GraphicsScreen.BackgroundColor = Color.CornflowerBlue;
// The top-down camera.
var orthographicProjection = new OrthographicProjection();
orthographicProjection.Set(
LevelSize * 1.1f * GraphicsService.GraphicsDevice.Viewport.AspectRatio,
LevelSize * 1.1f,
1,
10000f);
var topDownCamera = new Camera(orthographicProjection);
_topDownCameraNode = new CameraNode(topDownCamera)
{
View = Matrix44F.CreateLookAt(new Vector3F(0, 1000, 0), new Vector3F(0, 0, 0), -Vector3F.UnitZ),
};
// The perspective camera moving through the scene.
var perspectiveProjection = new PerspectiveProjection();
perspectiveProjection.SetFieldOfView(
MathHelper.ToRadians(45),
GraphicsService.GraphicsDevice.Viewport.AspectRatio,
1,
500);
var sceneCamera = new Camera(perspectiveProjection);
_sceneCameraNode = new CameraNode(sceneCamera);
// Initialize collision detection.
// We use one collision domain that manages all objects.
_domain = new CollisionDomain(new CollisionDetection())
{
// We exchange the default broad phase with a DualPartition. The DualPartition
// has special support for frustum culling.
BroadPhase = new DualPartition <CollisionObject>(),
};
// Create a lot of random objects and add them to the collision domain.
RandomHelper.Random = new Random(12345);
for (int i = 0; i < NumberOfObjects; i++)
{
// A real scene consists of a lot of complex objects such as characters, vehicles,
// buildings, lights, etc. When doing frustum culling we need to test each objects against
// the viewing frustum. If it intersects with the viewing frustum, the object is visible
// from the camera's point of view. However, in practice we do not test the exact object
// against the viewing frustum. Each objects is approximated by a simpler shape. In our
// example, we assume that each object is approximated with an oriented bounding box.
// (We could also use an other shape, such as a bounding sphere.)
// Create a random box.
Shape randomShape = new BoxShape(RandomHelper.Random.NextVector3F(1, 10));
// Create a random position.
Vector3F randomPosition;
randomPosition.X = RandomHelper.Random.NextFloat(-LevelSize / 2, LevelSize / 2);
randomPosition.Y = RandomHelper.Random.NextFloat(0, 2);
randomPosition.Z = RandomHelper.Random.NextFloat(-LevelSize / 2, LevelSize / 2);
// Create a random orientation.
QuaternionF randomOrientation = RandomHelper.Random.NextQuaternionF();
// Create object and add it to collision domain.
var geometricObject = new GeometricObject(randomShape, new Pose(randomPosition, randomOrientation));
var collisionObject = new CollisionObject(geometricObject)
{
CollisionGroup = 0,
};
_domain.CollisionObjects.Add(collisionObject);
}
// Per default, the collision domain computes collision between all objects.
// In this sample we do not need this information and disable it with a collision
// filter.
// In a real application, we would use this collision information for rendering,
// for example, to find out which lights overlap with which meshes, etc.
var filter = new CollisionFilter();
// Disable collision between objects in collision group 0.
filter.Set(0, 0, false);
_domain.CollisionDetection.CollisionFilter = filter;
// Start with the top-down camera.
GraphicsScreen.CameraNode = _topDownCameraNode;
// We will collect a few statistics for debugging.
Profiler.SetFormat("NoCull", 1000, "Time in ms to submit DebugRenderer draw jobs without frustum culling.");
Profiler.SetFormat("WithCull", 1000, "Time in ms to submit DebugRenderer draw jobs with frustum culling.");
}
protected override void OnLoad()
{
var contentManager = _services.GetInstance <ContentManager>();
_lights.Add(new LightNode(new AmbientLight
{
Color = new Vector3F(0.9f, 0.9f, 1f),
Intensity = 0.05f,
HemisphericAttenuation = 1,
})
{
Name = "AmbientLight",
// This ambient light is "infinite", the pose is irrelevant for the lighting. It is only
// used for the debug rendering below.
PoseWorld = new Pose(new Vector3F(0, 4, 0)),
});
_lights.Add(new LightNode(new DirectionalLight
{
Color = new Vector3F(0.6f, 0.8f, 1f),
DiffuseIntensity = 0.1f,
SpecularIntensity = 0.1f,
})
{
Name = "DirectionalLightWithShadow",
Priority = 10, // This is the most important light.
PoseWorld = new Pose(new Vector3F(0, 5, 0), Matrix33F.CreateRotationY(-1.4f) * Matrix33F.CreateRotationX(-0.6f)),
Shadow = new CascadedShadow
{
PreferredSize = 1024,
DepthBiasScale = new Vector4F(0.99f),
DepthBiasOffset = new Vector4F(0),
FadeOutDistance = 20,
MaxDistance = 30,
MinLightDistance = 5,
ShadowFog = 0.5f,
JitterResolution = 3000,
SplitDistribution = 0.7f
}
});
_lights.Add(new LightNode(new DirectionalLight
{
Color = new Vector3F(0.8f, 0.4f, 0.0f),
DiffuseIntensity = 0.1f,
SpecularIntensity = 0.0f,
})
{
Name = "DirectionalLight",
PoseWorld = new Pose(new Vector3F(0, 6, 0), Matrix33F.CreateRotationY(-1.4f) * Matrix33F.CreateRotationX(-0.6f) * Matrix33F.CreateRotationX(ConstantsF.Pi)),
});
_lights.Add(new LightNode(new PointLight
{
Color = new Vector3F(0, 1, 0),
DiffuseIntensity = 2,
SpecularIntensity = 2,
Range = 3,
Attenuation = 1f,
})
{
Name = "PointLight",
PoseWorld = new Pose(new Vector3F(-7, 1, 0))
});
_lights.Add(new LightNode(new PointLight
{
DiffuseIntensity = 4,
SpecularIntensity = 4,
Range = 3,
Attenuation = 1f,
Texture = contentManager.Load <TextureCube>("LavaBall/LavaCubeMap"),
})
{
Name = "PointLightWithTexture",
PoseWorld = new Pose(new Vector3F(-2, 1, 0))
});
_lights.Add(new LightNode(new PointLight
{
Color = new Vector3F(1, 1, 1),
DiffuseIntensity = 2,
SpecularIntensity = 2,
Range = 3,
Attenuation = 1f,
})
{
Name = "PointLightWithShadow",
PoseWorld = new Pose(new Vector3F(2, 1, 0)),
Shadow = new CubeMapShadow
{
PreferredSize = 128,
DepthBiasScale = 0.9f,
DepthBiasOffset = -0.01f,
}
});
_lights.Add(new LightNode(new PointLight
{
Color = new Vector3F(1, 1, 1),
DiffuseIntensity = 4,
SpecularIntensity = 4,
Range = 3,
Attenuation = 1f,
Texture = contentManager.Load <TextureCube>("MagicSphere/ColorCube"),
})
{
Name = "PointLightWithTextureAndShadow",
PoseWorld = new Pose(new Vector3F(7, 1, 0)),
Shadow = new CubeMapShadow
{
PreferredSize = 128,
DepthBiasScale = 0.9f,
DepthBiasOffset = -0.01f,
}
});
_lights.Add(new LightNode(new ProjectorLight
{
Texture = contentManager.Load <Texture2D>("TVBox/TestCard"),
})
{
Name = "ProjectorLight",
PoseWorld = Pose.FromMatrix(Matrix44F.CreateLookAt(new Vector3F(-1, 1, -6), new Vector3F(-5, 0, -6), new Vector3F(0, 1, 0))).Inverse,
});
_lights.Add(new LightNode(new ProjectorLight
{
Texture = contentManager.Load <Texture2D>("TVBox/TestCard"),
})
{
Name = "ProjectorLightWithShadow",
PoseWorld = Pose.FromMatrix(Matrix44F.CreateLookAt(new Vector3F(5, 1, -6), new Vector3F(1, 0, -6), new Vector3F(0, 1, 0))).Inverse,
Shadow = new StandardShadow
{
PreferredSize = 128,
}
});
_lights.Add(new LightNode(new Spotlight
{
Color = new Vector3F(0, 1, 0),
DiffuseIntensity = 2,
SpecularIntensity = 2,
})
{
Name = "Spotlight",
PoseWorld = Pose.FromMatrix(Matrix44F.CreateLookAt(new Vector3F(-7, 1, -12), new Vector3F(-10, 0, -12), new Vector3F(0, 1, 0))).Inverse,
});
_lights.Add(new LightNode(new Spotlight
{
DiffuseIntensity = 2,
SpecularIntensity = 2,
Texture = contentManager.Load <Texture2D>("TVBox/TestCard"),
})
{
Name = "SpotlightWithTexture",
PoseWorld = Pose.FromMatrix(Matrix44F.CreateLookAt(new Vector3F(-1, 1, -12), new Vector3F(-5, 0, -12), new Vector3F(0, 1, 0))).Inverse,
});
_lights.Add(new LightNode(new Spotlight
{
DiffuseIntensity = 2,
SpecularIntensity = 2,
})
{
Name = "SpotlightWithShadow",
PoseWorld = Pose.FromMatrix(Matrix44F.CreateLookAt(new Vector3F(5, 1, -12), new Vector3F(1, 0, -12), new Vector3F(0, 1, 0))).Inverse,
Shadow = new StandardShadow
{
PreferredSize = 128,
}
});
_lights.Add(new LightNode(new Spotlight
{
Color = new Vector3F(1, 1, 0),
DiffuseIntensity = 2,
SpecularIntensity = 2,
Texture = contentManager.Load <Texture2D>("TVBox/TestCard"),
})
{
Name = "SpotlightWithTextureAndShadow",
PoseWorld = Pose.FromMatrix(Matrix44F.CreateLookAt(new Vector3F(11, 1, -12), new Vector3F(5, 0, -12), new Vector3F(0, 1, 0))).Inverse,
Shadow = new StandardShadow
{
PreferredSize = 128,
}
});
var scene = _services.GetInstance <IScene>();
_debugRenderer = _services.GetInstance <DebugRenderer>();
foreach (var lightNode in _lights)
{
scene.Children.Add(lightNode);
}
}
protected override void OnUpdate(TimeSpan deltaTime)
{
// Mouse centering (controlled by the MenuComponent) is disabled if the game
// is inactive or if the GUI is active. In these cases, we do not want to move
// the player.
if (!_inputService.EnableMouseCentering)
{
return;
}
if (_inputService.IsPressed(Keys.Enter, true))
{
// Toggle between player camera and spectator view.
_useSpectatorView = !_useSpectatorView;
}
else
{
float deltaTimeF = (float)deltaTime.TotalSeconds;
// Compute new yaw and pitch from mouse movement.
float deltaYaw = 0;
deltaYaw -= _inputService.MousePositionDelta.X;
deltaYaw -= _inputService.GetGamePadState(LogicalPlayerIndex.One).ThumbSticks.Right.X * 10;
_yaw += deltaYaw * deltaTimeF * 0.1f;
float deltaPitch = 0;
deltaPitch -= _inputService.MousePositionDelta.Y;
deltaPitch += _inputService.GetGamePadState(LogicalPlayerIndex.One).ThumbSticks.Right.Y * 10;
_pitch += deltaPitch * deltaTimeF * 0.1f;
// Limit the pitch angle to less than +/- 90°.
float limit = ConstantsF.PiOver2 - 0.01f;
_pitch = MathHelper.Clamp(_pitch, -limit, limit);
}
// Update SceneNode.LastPoseWorld - this is required for some effects, like
// camera motion blur.
CameraNode.LastPoseWorld = CameraNode.PoseWorld;
var vehiclePose = _vehicle.Pose;
if (_useSpectatorView)
{
// Spectator Mode:
// Camera is looking at the car from a fixed location in the level.
Vector3F position = new Vector3F(10, 8, 10);
Vector3F target = vehiclePose.Position;
Vector3F up = Vector3F.UnitY;
// Set the new camera view matrix. (Setting the View matrix changes the Pose.
// The pose is simply the inverse of the view matrix).
CameraNode.View = Matrix44F.CreateLookAt(position, target, up);
}
else
{
// Player Camera:
// Camera moves with the car. The look direction can be changed by moving the mouse.
Matrix33F yaw = Matrix33F.CreateRotationY(_yaw);
Matrix33F pitch = Matrix33F.CreateRotationX(_pitch);
Matrix33F orientation = vehiclePose.Orientation * yaw * pitch;
Vector3F forward = orientation * -Vector3F.UnitZ;
Vector3F up = Vector3F.UnitY;
Vector3F position = vehiclePose.Position - 10 * forward + 5 * up;
Vector3F target = vehiclePose.Position + 1 * up;
CameraNode.View = Matrix44F.CreateLookAt(position, target, up);
}
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
{
return;
}
context.ThrowIfCameraMissing();
context.ThrowIfSceneMissing();
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalReferenceNode = context.ReferenceNode;
var cameraNode = context.CameraNode;
// Update SceneNode.LastFrame for all visible nodes.
int frame = context.Frame;
cameraNode.LastFrame = frame;
// The scene node renderer should use the light camera instead of the player camera.
context.CameraNode = _perspectiveCameraNode;
context.Technique = "Omnidirectional";
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var renderTargetPool = graphicsService.RenderTargetPool;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
for (int i = 0; i < numberOfNodes; i++)
{
var lightNode = nodes[i] as LightNode;
if (lightNode == null)
{
continue;
}
var shadow = lightNode.Shadow as CubeMapShadow;
if (shadow == null)
{
continue;
}
var light = lightNode.Light as PointLight;
if (light == null)
{
throw new GraphicsException("CubeMapShadow can only be used with a PointLight.");
}
// LightNode is visible in current frame.
lightNode.LastFrame = frame;
if (shadow.ShadowMap == null)
{
shadow.ShadowMap = renderTargetPool.ObtainCube(
new RenderTargetFormat(
shadow.PreferredSize,
null,
false,
shadow.Prefer16Bit ? SurfaceFormat.HalfSingle : SurfaceFormat.Single,
DepthFormat.Depth24));
}
((PerspectiveProjection)_perspectiveCameraNode.Camera.Projection).SetFieldOfView(
ConstantsF.PiOver2, 1, shadow.Near, light.Range);
// World units per texel at a planar distance of 1 world unit.
float unitsPerTexel = _perspectiveCameraNode.Camera.Projection.Width / (shadow.ShadowMap.Size * shadow.Near);
// Convert depth bias from "texel" to world space.
// Minus to move receiver closer to light.
shadow.EffectiveDepthBias = -shadow.DepthBias * unitsPerTexel;
// Convert normal offset from "texel" to world space.
shadow.EffectiveNormalOffset = shadow.NormalOffset * unitsPerTexel;
var pose = lightNode.PoseWorld;
context.ReferenceNode = lightNode;
context.Object = shadow;
bool shadowMapContainsSomething = false;
for (int side = 0; side < 6; side++)
{
context.Data[RenderContextKeys.ShadowTileIndex] = BoxedIntegers[side];
graphicsDevice.SetRenderTarget(shadow.ShadowMap, CubeMapFaces[side]);
// context.RenderTarget = shadow.ShadowMap; // TODO: Support cube maps targets in the render context.
context.Viewport = graphicsDevice.Viewport;
graphicsDevice.Clear(Color.White);
_perspectiveCameraNode.View = Matrix44F.CreateLookAt(
pose.Position,
pose.ToWorldPosition(CubeMapForwardVectors[side]),
pose.ToWorldDirection(CubeMapUpVectors[side]));
// Abort if this cube map frustum does not touch the camera frustum.
if (!context.Scene.HaveContact(cameraNode, _perspectiveCameraNode))
{
continue;
}
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
graphicsDevice.BlendState = BlendState.Opaque;
shadowMapContainsSomething |= RenderCallback(context);
}
// Recycle shadow map if empty.
if (!shadowMapContainsSomething)
{
renderTargetPool.Recycle(shadow.ShadowMap);
shadow.ShadowMap = null;
}
}
graphicsDevice.SetRenderTarget(null);
savedRenderState.Restore();
context.CameraNode = cameraNode;
context.Technique = null;
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.ReferenceNode = originalReferenceNode;
context.Object = null;
context.Data[RenderContextKeys.ShadowTileIndex] = null;
}
private void Render(RenderContext context)
{
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var graphicsDevice = context.GraphicsService.GraphicsDevice;
if (_updateCubeMap)
{
_updateCubeMap = false;
_cloudMapRenderer.Render(_skyNodes, context);
// Create a camera with 45° FOV for a single cube map face.
var perspectiveProjection = new PerspectiveProjection();
perspectiveProjection.SetFieldOfView(ConstantsF.PiOver2, 1, 1, 100);
context.CameraNode = new CameraNode(new Camera(perspectiveProjection));
var size = _skybox.Texture.Size;
var hdrFormat = new RenderTargetFormat(size, size, false, SurfaceFormat.HdrBlendable, DepthFormat.None);
var hdrTarget = context.GraphicsService.RenderTargetPool.Obtain2D(hdrFormat);
var ldrFormat = new RenderTargetFormat(size, size, false, SurfaceFormat.Color, DepthFormat.None);
var ldrTarget = context.GraphicsService.RenderTargetPool.Obtain2D(ldrFormat);
var spriteBatch = GraphicsService.GetSpriteBatch();
for (int side = 0; side < 6; side++)
{
// Rotate camera to face the current cube map face.
var cubeMapFace = (CubeMapFace)side;
context.CameraNode.View = Matrix44F.CreateLookAt(
new Vector3F(),
GraphicsHelper.GetCubeMapForwardDirection(cubeMapFace),
GraphicsHelper.GetCubeMapUpDirection(cubeMapFace));
// Render sky into HDR render target.
graphicsDevice.SetRenderTarget(hdrTarget);
context.RenderTarget = hdrTarget;
context.Viewport = graphicsDevice.Viewport;
graphicsDevice.Clear(Color.Black);
_skyRenderer.Render(_skyNodes, context);
graphicsDevice.BlendState = BlendState.Opaque;
// Convert HDR to RGBM.
context.SourceTexture = hdrTarget;
context.RenderTarget = ldrTarget;
_colorEncoder.Process(context);
context.SourceTexture = null;
// Copy RGBM texture into cube map face.
graphicsDevice.SetRenderTarget((RenderTargetCube)_skybox.Texture, cubeMapFace);
spriteBatch.Begin(SpriteSortMode.Immediate, BlendState.Opaque, null, null, null);
spriteBatch.Draw(ldrTarget, new Vector2(0, 0), Color.White);
spriteBatch.End();
}
context.GraphicsService.RenderTargetPool.Recycle(ldrTarget);
context.GraphicsService.RenderTargetPool.Recycle(hdrTarget);
}
graphicsDevice.BlendState = BlendState.Opaque;
graphicsDevice.DepthStencilState = DepthStencilState.Default;
graphicsDevice.RasterizerState = RasterizerState.CullCounterClockwise;
context.CameraNode = _cameraObject.CameraNode;
var tempFormat = new RenderTargetFormat(originalRenderTarget);
tempFormat.SurfaceFormat = SurfaceFormat.HdrBlendable;
var tempTarget = context.GraphicsService.RenderTargetPool.Obtain2D(tempFormat);
graphicsDevice.SetRenderTarget(tempTarget);
graphicsDevice.Viewport = originalViewport;
context.RenderTarget = tempTarget;
context.Viewport = originalViewport;
_skyRenderer.Render(_skybox, context);
context.SourceTexture = tempTarget;
context.RenderTarget = originalRenderTarget;
_hdrFilter.Process(context);
context.SourceTexture = null;
context.GraphicsService.RenderTargetPool.Recycle(tempTarget);
RenderDebugInfo(context);
context.CameraNode = null;
}
public override void Render(IList <SceneNode> nodes, RenderContext context, RenderOrder order)
{
if (nodes == null)
{
throw new ArgumentNullException("nodes");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
int numberOfNodes = nodes.Count;
if (numberOfNodes == 0)
{
return;
}
var graphicsService = context.GraphicsService;
var graphicsDevice = graphicsService.GraphicsDevice;
var renderTargetPool = graphicsService.RenderTargetPool;
int frame = context.Frame;
var savedRenderState = new RenderStateSnapshot(graphicsDevice);
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
var originalCameraNode = context.CameraNode;
var originalLodCameraNode = context.LodCameraNode;
var originalReferenceNode = context.ReferenceNode;
try
{
// Use foreach instead of for-loop to catch InvalidOperationExceptions in
// case the collection is modified.
for (int i = 0; i < numberOfNodes; i++)
{
var node = nodes[i] as SceneCaptureNode;
if (node == null)
{
continue;
}
// Update each node only once per frame.
if (node.LastFrame == frame)
{
continue;
}
node.LastFrame = frame;
var cameraNode = node.CameraNode;
if (cameraNode == null)
{
continue;
}
var texture = node.RenderToTexture.Texture;
if (texture == null)
{
continue;
}
// RenderToTexture instances can be shared. --> Update them only once per frame.
if (node.RenderToTexture.LastFrame == frame)
{
continue;
}
context.CameraNode = cameraNode;
context.LodCameraNode = cameraNode;
context.ReferenceNode = node;
var renderTarget2D = texture as RenderTarget2D;
var projection = cameraNode.Camera.Projection;
if (renderTarget2D != null)
{
context.RenderTarget = renderTarget2D;
context.Viewport = new Viewport(0, 0, renderTarget2D.Width, renderTarget2D.Height);
RenderCallback(context);
// Update other properties of RenderToTexture.
node.RenderToTexture.LastFrame = frame;
node.RenderToTexture.TextureMatrix = GraphicsHelper.ProjectorBiasMatrix
* projection
* cameraNode.PoseWorld.Inverse;
continue;
}
var renderTargetCube = texture as RenderTargetCube;
if (renderTargetCube != null)
{
var format = new RenderTargetFormat(renderTargetCube)
{
Mipmap = false
};
renderTarget2D = renderTargetPool.Obtain2D(format);
context.RenderTarget = renderTarget2D;
context.Viewport = new Viewport(0, 0, renderTarget2D.Width, renderTarget2D.Height);
if (_spriteBatch == null)
{
_spriteBatch = graphicsService.GetSpriteBatch();
}
var perspectiveProjection = projection as PerspectiveProjection;
if (perspectiveProjection == null)
{
throw new GraphicsException("The camera of the SceneCaptureNode must use a perspective projection.");
}
// ReSharper disable CompareOfFloatsByEqualityOperator
if (perspectiveProjection.FieldOfViewX != ConstantsF.PiOver2 ||
perspectiveProjection.FieldOfViewY != ConstantsF.PiOver2)
{
perspectiveProjection.SetFieldOfView(ConstantsF.PiOver2, 1, projection.Near, projection.Far);
}
// ReSharper restore CompareOfFloatsByEqualityOperator
var originalCameraPose = cameraNode.PoseWorld;
for (int side = 0; side < 6; side++)
{
// Rotate camera to face the current cube map face.
//var cubeMapFace = (CubeMapFace)side;
// AMD problem: If we generate in normal order, the last cube map face contains
// garbage when mipmaps are created.
var cubeMapFace = (CubeMapFace)(5 - side);
var position = cameraNode.PoseWorld.Position;
cameraNode.View = Matrix44F.CreateLookAt(
position,
position + originalCameraPose.ToWorldDirection(GraphicsHelper.GetCubeMapForwardDirection(cubeMapFace)),
originalCameraPose.ToWorldDirection(GraphicsHelper.GetCubeMapUpDirection(cubeMapFace)));
RenderCallback(context);
// Copy RGBM texture into cube map face.
graphicsDevice.SetRenderTarget(renderTargetCube, cubeMapFace);
_spriteBatch.Begin(SpriteSortMode.Immediate, BlendState.Opaque, null, null, null);
_spriteBatch.Draw(renderTarget2D, new Vector2(0, 0), Color.White);
_spriteBatch.End();
}
cameraNode.PoseWorld = originalCameraPose;
renderTargetPool.Recycle(renderTarget2D);
// Update other properties of RenderToTexture.
node.RenderToTexture.LastFrame = frame;
node.RenderToTexture.TextureMatrix = GraphicsHelper.ProjectorBiasMatrix
* projection
* cameraNode.PoseWorld.Inverse;
continue;
}
throw new GraphicsException(
"SceneCaptureNode.RenderToTexture.Texture is invalid. The texture must be a RenderTarget2D or RenderTargetCube.");
}
}
catch (InvalidOperationException exception)
{
throw new GraphicsException(
"InvalidOperationException was raised in SceneCaptureRenderer.Render(). "
+ "This can happen if a SceneQuery instance that is currently in use is modified in the "
+ "RenderCallback. --> Use different SceneQuery types in the method which calls "
+ "SceneCaptureRenderer.Render() and in the RenderCallback method.",
exception);
}
graphicsDevice.SetRenderTarget(null);
savedRenderState.Restore();
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
context.CameraNode = originalCameraNode;
context.LodCameraNode = originalLodCameraNode;
context.ReferenceNode = originalReferenceNode;
}
