bool ICullable.CullTest(ICuller culler)
{
#if DEBUG
return(true);
#else
return(false);
#endif
}
internal bool CullChild(ICuller culler, ref Matrix instance)
{
if (modelData == null)
{
throw new InvalidOperationException("ModelData is null");
}
return(culler.TestBox(ref modelData.staticBounds.minimum, ref modelData.staticBounds.maximum, ref instance));
}
/// <summary>
/// [Requires <see cref="SupportsHardwareInstancing"/>] Draws multiple instances of a vertex buffer in an efficient way, using an optional callback to determine if an instance should be drawn. Using Shader Instancing is highly recommended for smaller batches of simple geometry.
/// </summary>
/// <param name="vertices">Vertex buffer of the instances to be drawn</param>
/// <param name="indices">Index buffer of the instances to be drawn</param>
/// <param name="primitiveType">Primitive type to be drawn</param>
/// <param name="CanDrawItem">[optional] callback to determine if an instance index should be drawn or not (may be null)</param>
/// <param name="instances">Array of instances to draw</param>
/// <param name="instancesLength">Number of instances in the array to draw</param>
/// <returns>number of instances drawn</returns>
/// <param name="startIndex">starting index in the <paramref name="instances"/> array</param>
public int DrawBatch(Xen.Graphics.IVertices vertices, Graphics.IIndices indices, PrimitiveType primitiveType, Callback <bool, int, ICuller> CanDrawItem, Vector3[] instances, int instancesLength, int startIndex)
{
ValidateProtected();
if (instancesLength == 0)
{
return(0);
}
StreamBuffer buffer = GetBuffer(instancesLength);
int start;
Graphics.StreamFrequency.InstanceMatrix[] instanceMartixData = buffer.Prepare(out start);
int count = 0;
if (CanDrawItem != null)
{
ICuller culler = this;
for (int i = 0; i < instancesLength; i++)
{
PushWorldTranslateMultiply(ref instances[i + startIndex]);
if (CanDrawItem(i + startIndex, culler))
{
GetWorldMatrix(ref instanceMartixData[start++]);
count++;
}
PopWorldMatrix();
}
}
else
{
if (ms_World.isIdentity || (instancesLength > 4 && ms_World.value == Matrix.Identity))
{
for (int i = 0; i < instancesLength; i++)
{
instanceMartixData[start++].Set(ref instances[i + startIndex]);
}
count = instancesLength;
}
else
{
for (int i = 0; i < instancesLength; i++)
{
PushWorldTranslateMultiply(ref instances[i + startIndex]);
instanceMartixData[start].Set(ref ms_World.value);
start++;
count++;
PopWorldMatrix();
}
}
}
return(DrawBatch(buffer.Fill(vertices, count), indices, primitiveType, count));
}
public bool CullTest(ICuller culler)
{
//make sure the world matrix is up to date first
UpdateWorldMatrix();
//the model implements ICullableInstance interface, which allows a matrix to be passed in
//the DepthDrawSorter requires a cull test be performed to sort this actor into front-back rendering order
return(model.CullTest(culler, ref this.worldMatrix));
}
//Fully implement CullTest
public bool CullTest(ICuller culler)
{
//cull test with a bounding box...
//the box is represented as 'min / max' positions.
//the vertex positions range from -1,-1,0 to 1,1,0
//If the camera were changed, and this quad were offscreen, the cull test
//would return false, and it would not be drawn.
return(culler.TestBox(new Vector3(-1, -1, 0), new Vector3(1, 1, 0)));
}
//cull test ALL of them :-)
public bool CullTest(ICuller culler)
{
bool visible = false;
for (int i = 0; i < this.bursts.Length; i++)
{
visible |= this.bursts[i].CullTest(culler);
}
return(visible);
}
//Anything that implements IDraw (such as this class) also implements ICullable.
//this requires an object to implement the CullTest method declared below.
//CullTest returns true or false.
//For the majority of cases, CullTest will perform frustum culling ('on-screen culling').
//A return value of true means on-screen, false means off screen.
//
//The 'culler' object passed in is smart. It knows the current draw context,
//for example it knows the world matrix.
//
//In the example above, the Sphere geometry class ('this.sphereGeometry') internally
//implements CullTest as:
//
//return culler.TestSphere(this.radius);
//
//The sphere need not know where it is being drawn (ie, it's current world matrix)
//because the ICuller already knows this.
public bool CullTest(ICuller culler)
{
//in this case, however, simply return true.
//this means 'always draw'.
//This is because in this case, a world-matrix will be applied during the
//draw() method, which will potentially change the result of the sphereGeometry
//cull test.
//What this means is that:
//return sphereGeometry.CullTest(culler);
//would be invalid here.
//However,
//culler.TestSphere(this.sphereGeometry.Radius, this.worldMatrix.Translation);
//would be correct, assuming the world matrix was not scaling/rotating
return(true);
}
/// <summary>
/// FrustumCull test the model
/// </summary>
/// <param name="culler"></param>
/// <returns></returns>
public bool CullTest(ICuller culler)
{
if (modelData == null)
{
throw new InvalidOperationException("ModelData is null");
}
if (shaderProvider != null && shaderProvider.ProviderModifiesWorldMatrixInBeginDraw)
{
return(true);
}
if (controller == null)
{
return(culler.TestBox(ref modelData.staticBounds.minimum, ref modelData.staticBounds.maximum));
}
else
{
controller.WaitForAsyncAnimation(culler.GetState(), culler.FrameIndex, false);
return(culler.TestBox(ref controller.boundsMin, ref controller.boundsMax));
}
}
/// <summary>
/// FrustumCull test the model at the given location
/// </summary>
public bool CullTest(ICuller culler, ref Matrix instance)
{
if (modelData == null)
{
return(false);
}
if (shaderProvider != null && shaderProvider.ProviderModifiesWorldMatrixInBeginDraw)
{
return(true);
}
if (controller == null)
{
return(culler.TestBox(ref modelData.staticBounds.minimum, ref modelData.staticBounds.maximum, ref instance));
}
else
{
controller.WaitForAsyncAnimation(culler.GetState(), culler.FrameIndex, false);
return(culler.TestBox(ref controller.boundsMin, ref controller.boundsMax, ref instance));
}
}
/// <summary>
/// Cull test this box using a local world matrix
/// </summary>
public bool CullTest(ICuller culler, ref Matrix instance)
{
return culler.TestBox(ref min, ref max, ref instance);
}
public bool CullTest(ICuller culler)
{
//make sure the world matrix is up to date first
UpdateWorldMatrix();
//the model implements ICullableInstance interface, which allows a matrix to be passed in
//the DepthDrawSorter requires a cull test be performed to sort this actor into front-back rendering order
return model.CullTest(culler, ref this.worldMatrix);
}
//each instance will call this culling method
public bool CullTestInstance(ICuller culler, ref Vector3 translation)
{
return culler.TestSphere(1,ref translation);
}
public bool CullTest(ICuller culler)
{
return(instanceCount > 0);
}
/// <summary></summary>
/// <param name="culler"></param>
/// <returns></returns>
public bool CullTest(ICuller culler)
{
return addList.Count > 0 || CullTestItems(culler);
}
public bool CullTest(ICuller culler)
{
return(scene.CullTest(culler));
}
/// <summary>
/// Draw the items in sorted order
/// </summary>
/// <param name="state"></param>
public void Draw(DrawState state)
{
if (itemCount == 0)
{
return;
}
sortFrameIndex++;
//sortEvery so many frames...
if (sortFrameIndex > sortEvery)
{
sortFrameIndex = 0; // ok, time to sort
}
else
{
//otherwise,
//draw using the previous frame sorting...
if (sortMode == DepthSortMode.FrontToBack)
{
for (int i = 0; i < previousFrameVisibleCount; i++)
{
IDraw item = items[i].item;
if (item.CullTest(state))
{
item.Draw(state);
}
}
}
else
{
for (int i = previousFrameVisibleCount - 1; i >= 0; i--)
{
IDraw item = items[i].item;
if (item.CullTest(state))
{
item.Draw(state);
}
}
}
int drawn = 0;
//draw the rest...
for (int i = previousFrameVisibleCount; i < this.itemCount; i++)
{
IDraw item = items[i].item;
if (item.CullTest(state))
{
item.Draw(state);
drawn++;
}
}
return;
}
//sort and draw...
ICuller culler = state;
state.PushPostCuller(postCuller);
postCuller.BeginPreCullItem(state);
int index = 0;
int visible = 0;
int backIndex = itemCount - 1;
int backIndexCulled = itemCount - 1;
int unsortedItems = 0;
Vector3 position, camera, direction;
state.Camera.GetCameraPosition(out camera);
state.Camera.GetCameraViewDirection(out direction);
for (int i = 0; i < itemCount; i++)
{
Entry item = items[index];
postCuller.ResetPreCullItem();
bool cullTest = item.item.CullTest(culler);
if (cullTest && postCuller.TryGetPosition(out position))
{
//keep item in the list
items[index] = items[visible];
//centre of cull tests
position.X -= camera.X;
position.Y -= camera.Y;
position.Z -= camera.Z;
float depth = direction.X * position.X + direction.Y * position.Y + direction.Z * position.Z;
if (depth > 0)
{
depth = position.X * position.X + position.Y * position.Y + position.Z * position.Z;
}
depths[visible] = depth;
items[visible] = item;
visible++;
index++;
}
else
{
//swap the back culled element to this one, don't increment index
items[index] = items[backIndexCulled];
items[backIndexCulled] = item;
backIndexCulled--;
if (cullTest)
{
//as the last step, put this item at the very back.
items[backIndexCulled + 1] = items[backIndex];
items[backIndex] = item;
depths[backIndex] = item.addIndex;
backIndex--;
unsortedItems++;
}
}
}
state.PopPostCuller();
if (unsortedItems > 0)
{
backIndex++;
//due to the way the algorithm works, the unsorted list is usually ordered like so:
//1,2,3,4,5,6,7,0
//so put the last element first, and check if they are out of order
float lastD = this.depths[this.itemCount - 1];
Entry lastE = this.items[this.itemCount - 1];
bool outOfOrder = lastD > this.depths[backIndex];
for (int i = this.itemCount - 2; i >= backIndex; i--)
{
if (i != this.itemCount - 2)
{
outOfOrder |= this.depths[i] > this.depths[i + 1];
}
this.items[i + 1] = this.items[i];
this.depths[i + 1] = this.depths[i];
}
this.depths[backIndex] = lastD;
this.items[backIndex] = lastE;
//draw the unsorted items in their add order (which was written to depths)
//this sort won't be all that efficient
if (outOfOrder)
{
Array.Sort(this.depths, this.items, backIndex, unsortedItems);
}
for (int i = 0; i < unsortedItems; i++)
{
items[backIndex++].item.Draw(state);
}
}
if (visible > 0)
{
//if the frame hasn't changed, the items should already be in sorted order,
//so this sort should be quick
//test if the values are already sorted...
float depth = this.depths[0];
bool outOfOrder = false;
for (int i = 1; i < visible; i++)
{
outOfOrder |= depths[i] < depth;
depth = depths[i];
}
if (outOfOrder)
{
Array.Sort(this.depths, this.items, 0, visible);
}
if (sortMode == DepthSortMode.FrontToBack)
{
for (int i = 0; i < visible; i++)
{
items[i].item.Draw(state);
}
}
else
{
for (int i = visible - 1; i >= 0; i--)
{
items[i].item.Draw(state);
}
}
}
previousFrameVisibleCount = visible;
}
public bool CullTest(ICuller culler)
{
return(culler.TestSphere(this.scale * 3, worldMatrix.Translation));
}
bool ICullable.CullTest(ICuller culler)
{
#if DEBUG
return true;
#else
return false;
#endif
}
public bool CullTest(ICuller culler)
{
return parent.CullTestInstance(culler,ref translation);
}
public bool CullTest(ICuller culler)
{
return model.CullTest(culler, ref worldMatrix);
}
/// <summary>
/// Run a cull test using the optional <see cref="CullProxy"/>
/// </summary>
/// <param name="culler"></param>
/// <returns></returns>
public bool CullTest(ICuller culler)
{
return(enabled && (cullProxy == null || cullProxy.CullTest(culler)));
}
bool ICullable.CullTest(ICuller culler)
{
return(itemCount > 0 && visible);
}
bool ICullable.CullTest(ICuller culler)
{
return true;
}
public bool CullTest(ICuller culler)
{
//apply the manual cull test
return culler.TestSphere(this.sphereRadius, ref this.sphereOffset);
}
bool ICullable.CullTest(ICuller culler)
{
return(enabled);
}
public bool CullTest(ICuller culler)
{
return culler.TestSphere(this.effectRadius, ref this.effectPosition);
}
bool ICullable.CullTest(ICuller culler)
{
return(true);
}
//cull test ALL of them :-)
public bool CullTest(ICuller culler)
{
bool visible = false;
for (int i = 0; i < this.bursts.Length; i++)
visible |= this.bursts[i].CullTest(culler);
return visible;
}
//each instance will call this culling method
public bool CullTestInstance(ICuller culler, ref Vector3 translation)
{
return(culler.TestSphere(1, ref translation));
}
public bool CullTest(ICuller culler)
{
return visible;
}
public bool CullTest(ICuller culler)
{
return(culler.TestBox(new Vector3(-radius, -radius, 0), new Vector3(radius, radius, 0)));
}
public bool CullTest(ICuller culler)
{
return culler.TestSphere(this.scale * 3, worldMatrix.Translation);
}
/// <summary>
/// FrustumCull test the cube
/// </summary>
/// <param name="culler"></param>
/// <returns></returns>
public bool CullTest(ICuller culler)
{
return culler.TestBox(ref min, ref max);
}
bool ICullable.CullTest(ICuller culler)
{
return Enabled; //only draw when enabled
}
bool ICullable.CullTest(ICuller culler)
{
return itemCount > 0 && visible;
}
bool ICullable.CullTest(ICuller culler)
{
return(drawCount > 0);
}
public bool CullTest(ICuller culler)
{
return scene.CullTest(culler);
}
/// <summary>
/// Cull test this instance of the BatchModel
/// </summary>
/// <param name="culler"></param>
/// <returns></returns>
public bool CullTest(ICuller culler)
{
return(parent.CullChild(culler));
}
bool ICullable.CullTest(ICuller culler)
{
return enabled;
}
/// <summary>
/// Cull test this instance of the BatchModel
/// </summary>
public bool CullTest(ICuller culler, ref Matrix instance)
{
return(parent.CullChild(culler, ref instance));
}
public bool CullTest(ICuller culler)
{
//cull test with an bounding box...
//this time taking into account the z values can also range between -1 and 1
return culler.TestBox(new Vector3(-1, -1, -1), new Vector3(1, 1, 1));
}
//cull test the avatar, in this case, the cull test is highly approximate.
public bool CullTest(ICuller culler)
{
return(avatar.CullTest(culler));
}
public bool CullTest(ICuller culler)
{
return(model.CullTest(culler, ref worldMatrix));
}
//Fully implement CullTest
public bool CullTest(ICuller culler)
{
//cull test with a bounding box...
//the box is represented as 'min / max' positions.
//the vertex positions range from -1,-1,0 to 1,1,0
//If the camera were changed, and this quad were offscreen, the cull test
//would return false, and it would not be drawn.
return culler.TestBox(new Vector3(-1, -1, 0), new Vector3(1, 1, 0));
}
public bool CullTest(ICuller culler)
{
return(true);
}
public bool CullTest(ICuller culler)
{
return true;
//return Model.CullTest(culler);
}
public bool CullTest(ICuller culler)
{
return _enabled;
}
public bool CullTest(ICuller culler)
{
return culler.TestBox(new Vector3(-radius, -radius, 0), new Vector3(radius, radius, 0));
}
/// <summary>Implemented by a subclass</summary> protected abstract bool CullTestItems(ICuller culler);
/// <summary>
/// FrustumCull test the cube
/// </summary>
/// <param name="culler"></param>
/// <returns></returns>
public bool CullTest(ICuller culler)
{
return(culler.TestBox(ref min, ref max));
}
public bool CullTest(ICuller culler)
{
return true;
}
/// <summary>Culltest the cone with a specified radius</summary>
public bool CullTest(ICuller culler, float radius)
{
return culler.TestSphere(radius);
}
public bool CullTest(ICuller culler)
{
return(parent.CullTestInstance(culler, ref translation));
}
bool ICullable.CullTest(ICuller culler)
{
//cull test on a single bounding box
return culler.TestBox(ref bounds.Min, ref bounds.Max);
}
//from here everything is the same as the previous example
public bool CullTest(ICuller culler)
{
return(model.CullTest(culler));
}
/// <summary>
/// Run a cull test using the optional <see cref="CullProxy"/>
/// </summary>
/// <param name="culler"></param>
/// <returns></returns>
public bool CullTest(ICuller culler)
{
return enabled && (cullProxy == null || cullProxy.CullTest(culler));
}
/// <summary>
/// Cull test this box using a local world matrix
/// </summary>
public bool CullTest(ICuller culler, ref Matrix instance)
{
return(culler.TestBox(ref min, ref max, ref instance));
}
//Anything that implements IDraw (such as this class) also implements ICullable.
//this requires an object implement the CullTest method declared below.
//CullTest returns true or false.
//
//For the majority of cases, CullTest will perform frustum culling ('on-screen culling').
//A return value of true means on-screen, false means off screen.
//
//The 'culler' object passed in is smart. It typically knows the current world matrix.
//
//In the example above, the Sphere geometry class ('this.sphereGeometry') internally
//implements CullTest as:
//
// return culler.TestSphere(this.radius);
//
//The sphere need not know where it is being drawn (ie, it's current world matrix)
//because the ICuller already knows this.
public bool CullTest(ICuller culler)
{
//in this case, however, simply return true.
//this means 'always draw'.
//This is because in this case, a world-matrix will be applied during the
//draw() method, which will potentially change the result of the sphereGeometry
//cull test.
//What this means is that:
//return sphereGeometry.CullTest(culler);
//would be invalid here.
//However,
//culler.TestSphere(this.sphereGeometry.Radius, this.worldMatrix.Translation);
//would be correct, assuming the world matrix was not scaling/rotating
return true;
}
/// <summary>
/// Culltest the cone with a instance world matrix providing the postion of the cone
/// </summary>
public bool CullTest(ICuller culler, ref Matrix instance)
{
return culler.TestSphere(this.radius, instance.Translation);
}
public SimpleRenderer(IXNAGame game, ICuller culler)
{
this.game = game;
this.culler = culler;
initialized = false;
}
