public static InstancedModelData CreateInstancedModelData(Model model, int[] meshDrawOrders)
{
DynamicArray <InstancedVertex> dynamicArray = new DynamicArray <InstancedVertex>();
DynamicArray <ushort> dynamicArray2 = new DynamicArray <ushort>();
for (int i = 0; i < meshDrawOrders.Length; i++)
{
ModelMesh modelMesh = model.Meshes[meshDrawOrders[i]];
foreach (ModelMeshPart meshPart in modelMesh.MeshParts)
{
_ = dynamicArray.Count;
VertexBuffer vertexBuffer = meshPart.VertexBuffer;
IndexBuffer indexBuffer = meshPart.IndexBuffer;
ReadOnlyList <VertexElement> vertexElements = vertexBuffer.VertexDeclaration.VertexElements;
ushort[] indexData = BlockMesh.GetIndexData <ushort>(indexBuffer);
Dictionary <ushort, ushort> dictionary = new Dictionary <ushort, ushort>();
if (vertexElements.Count != 3 || vertexElements[0].Offset != 0 || !(vertexElements[0].Semantic == VertexElementSemantic.Position.GetSemanticString()) || vertexElements[1].Offset != 12 || !(vertexElements[1].Semantic == VertexElementSemantic.Normal.GetSemanticString()) || vertexElements[2].Offset != 24 || !(vertexElements[2].Semantic == VertexElementSemantic.TextureCoordinate.GetSemanticString()))
{
throw new InvalidOperationException("Unsupported vertex format.");
}
SourceModelVertex[] vertexData = BlockMesh.GetVertexData <SourceModelVertex>(vertexBuffer);
for (int j = meshPart.StartIndex; j < meshPart.StartIndex + meshPart.IndicesCount; j++)
{
ushort num = indexData[j];
if (!dictionary.ContainsKey(num))
{
dictionary.Add(num, (ushort)dynamicArray.Count);
InstancedVertex item = default(InstancedVertex);
SourceModelVertex sourceModelVertex = vertexData[num];
item.X = sourceModelVertex.X;
item.Y = sourceModelVertex.Y;
item.Z = sourceModelVertex.Z;
item.Nx = sourceModelVertex.Nx;
item.Ny = sourceModelVertex.Ny;
item.Nz = sourceModelVertex.Nz;
item.Tx = sourceModelVertex.Tx;
item.Ty = sourceModelVertex.Ty;
item.Instance = modelMesh.ParentBone.Index;
dynamicArray.Add(item);
}
}
for (int k = 0; k < meshPart.IndicesCount / 3; k++)
{
dynamicArray2.Add(dictionary[indexData[meshPart.StartIndex + 3 * k]]);
dynamicArray2.Add(dictionary[indexData[meshPart.StartIndex + 3 * k + 1]]);
dynamicArray2.Add(dictionary[indexData[meshPart.StartIndex + 3 * k + 2]]);
}
}
}
InstancedModelData instancedModelData = new InstancedModelData();
instancedModelData.VertexBuffer = new VertexBuffer(InstancedModelData.VertexDeclaration, dynamicArray.Count);
instancedModelData.IndexBuffer = new IndexBuffer(IndexFormat.SixteenBits, dynamicArray2.Count);
instancedModelData.VertexBuffer.SetData(dynamicArray.Array, 0, dynamicArray.Count);
instancedModelData.IndexBuffer.SetData(dynamicArray2.Array, 0, dynamicArray2.Count);
return(instancedModelData);
}
/// <summary>
/// Adds a display object to the batch.
/// </summary>
/// <param name="displayObject">Display object to add.</param>
/// <param name="drawer">Drawer of the batch.</param>
public bool Add(ModelDisplayObject displayObject, InstancedModelDrawer drawer)
{
//In theory, don't need to test for dupliate entries since batch.Add
//should only be called through a InstancedModelDrawer's add (which checks beforehand).
if (displayObjects.Count == MaximumObjectsPerBatch ||
((indices.Length / 3 + displayObject.GetTriangleCountEstimate()) > MaximumPrimitiveCountPerBatch &&
displayObjects.Count > 0))
{
return(false);
}
displayObjects.Add(displayObject);
int instanceIndex = displayObjects.Count - 1;
var textureIndex = displayObject.TextureIndex;
displayObject.GetVertexData(vertexList, indexList, this, (ushort)vertices.Length, indices.Length, instanceIndex);
//Add the data to the batch.
var newVertices = new VertexPositionNormalTexture[vertices.Length + vertexList.Count];
vertices.CopyTo(newVertices, 0);
vertexList.CopyTo(newVertices, vertices.Length);
vertices = newVertices;
var newIndices = new ushort[indices.Length + indexList.Count];
indices.CopyTo(newIndices, 0);
indexList.CopyTo(newIndices, indices.Length);
indices = newIndices;
var newInstancingVertices = new InstancedVertex[instancedVertices.Length + vertexList.Count];
instancedVertices.CopyTo(newInstancingVertices, 0);
for (int i = instancedVertices.Length; i < newInstancingVertices.Length; i++)
{
newInstancingVertices[i] = new InstancedVertex {
InstanceIndex = instanceIndex, TextureIndex = textureIndex
}
}
;
instancedVertices = newInstancingVertices;
vertexBuffer = new VertexBuffer(graphicsDevice, VertexPositionNormalTexture.VertexDeclaration, vertices.Length, BufferUsage.WriteOnly);
vertexBuffer.SetData(vertices);
instancingBuffer = new VertexBuffer(graphicsDevice, InstancedVertex.VertexDeclaration, instancedVertices.Length, BufferUsage.WriteOnly);
instancingBuffer.SetData(instancedVertices);
bindings = new VertexBufferBinding[] { vertexBuffer, instancingBuffer };
indexBuffer = new IndexBuffer(graphicsDevice, IndexElementSize.SixteenBits, indices.Length, BufferUsage.WriteOnly);
indexBuffer.SetData(indices);
vertexList.Clear();
indexList.Clear();
return(true);
}
/// <summary>
/// Adds a display object to the batch.
/// </summary>
/// <param name="displayObject">Display object to add.</param>
/// <param name="drawer">Drawer of the batch.</param>
public unsafe bool Add(ModelDisplayObject displayObject, InstancedModelDrawer drawer)
{
//In theory, don't need to test for duplicate entries since batch.Add
//should only be called through a InstancedModelDrawer's add (which checks beforehand).
if (displayObjects.Count == MaximumObjectsPerBatch ||
((indexCount / 3 + displayObject.GetTriangleCountEstimate()) > MaximumPrimitiveCountPerBatch &&
displayObjects.Count > 0))
{
return(false);
}
displayObjects.Add(displayObject);
int instanceIndex = displayObjects.Count - 1;
var textureIndex = displayObject.TextureIndex;
//OUegheogh, this could just directly write into the batch's vertex/index cache rather than going through a list and recopy.
displayObject.GetVertexData(vertexList, indexList, this, (ushort)vertexCount, indexCount, instanceIndex);
vertexList.CopyTo(vertices, vertexCount);
indexList.CopyTo(indices, indexCount);
var newIndexCount = indexCount + indexList.Count;
var newVertexCount = vertexCount + vertexList.Count;
for (int i = vertexCount; i < newVertexCount; i++)
{
instancedVertices[i] = new InstancedVertex {
InstanceIndex = instanceIndex, TextureIndex = textureIndex
}
}
;
vertexBuffer.SetData(sizeof(VertexPositionNormalTexture) * vertexCount, vertices, vertexCount, vertexList.Count, sizeof(VertexPositionNormalTexture));
instancedBuffer.SetData(sizeof(InstancedVertex) * vertexCount, instancedVertices, vertexCount, vertexList.Count, sizeof(InstancedVertex));
indexBuffer.SetData(sizeof(ushort) * indexCount, indices, indexCount, indexList.Count);
vertexCount = newVertexCount;
indexCount = newIndexCount;
vertexList.Clear();
indexList.Clear();
return(true);
}
/// <summary>
/// Adds a display object to the batch.
/// </summary>
/// <param name="displayObject">Display object to add.</param>
/// <param name="drawer">Drawer of the batch.</param>
public bool Add(ModelDisplayObject displayObject, InstancedModelDrawer drawer)
{
//In theory, don't need to test for dupliate entries since batch.Add
//should only be called through a InstancedModelDrawer's add (which checks beforehand).
if (displayObjects.Count == MaximumObjectsPerBatch ||
((indices.Length / 3 + displayObject.GetTriangleCountEstimate()) > MaximumPrimitiveCountPerBatch &&
displayObjects.Count > 0))
return false;
displayObjects.Add(displayObject);
int instanceIndex = displayObjects.Count - 1;
var textureIndex = displayObject.TextureIndex;
displayObject.GetVertexData(vertexList, indexList, this, (ushort)vertices.Length, indices.Length, instanceIndex);
//Add the data to the batch.
var newVertices = new VertexPositionNormalTexture[vertices.Length + vertexList.Count];
vertices.CopyTo(newVertices, 0);
vertexList.CopyTo(newVertices, vertices.Length);
vertices = newVertices;
var newIndices = new ushort[indices.Length + indexList.Count];
indices.CopyTo(newIndices, 0);
indexList.CopyTo(newIndices, indices.Length);
indices = newIndices;
var newInstancingVertices = new InstancedVertex[instancedVertices.Length + vertexList.Count];
instancedVertices.CopyTo(newInstancingVertices, 0);
for (int i = instancedVertices.Length; i < newInstancingVertices.Length; i++)
newInstancingVertices[i] = new InstancedVertex { InstanceIndex = instanceIndex, TextureIndex = textureIndex };
instancedVertices = newInstancingVertices;
vertexBuffer = new VertexBuffer(graphicsDevice, VertexPositionNormalTexture.VertexDeclaration, vertices.Length, BufferUsage.WriteOnly);
vertexBuffer.SetData(vertices);
instancingBuffer = new VertexBuffer(graphicsDevice, InstancedVertex.VertexDeclaration, instancedVertices.Length, BufferUsage.WriteOnly);
instancingBuffer.SetData(instancedVertices);
bindings = new VertexBufferBinding[] { vertexBuffer, instancingBuffer };
indexBuffer = new IndexBuffer(graphicsDevice, IndexElementSize.SixteenBits, indices.Length, BufferUsage.WriteOnly);
indexBuffer.SetData(indices);
vertexList.Clear();
indexList.Clear();
return true;
}
/// <summary>
/// Removes a display object from the batch.
/// </summary>
/// <param name="displayObject">Display object to remove.</param>
/// <param name="drawer">Instanced model drawer doing the removal.</param>
public void Remove(ModelDisplayObject displayObject, InstancedModelDrawer drawer)
{
//Modify vertex buffer
var newVertices = new VertexPositionNormalTexture[vertices.Length - displayObject.BatchInformation.VertexCount];
//Copy the first part back (before the display object)
Array.Copy(vertices, 0, newVertices, 0, displayObject.BatchInformation.BaseVertexBufferIndex);
//Copy the second part back (after the display object)
Array.Copy(vertices, displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount,
newVertices, displayObject.BatchInformation.BaseVertexBufferIndex,
vertices.Length - (displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount));
vertices = newVertices;
//Modify index buffer
var newIndices = new ushort[indices.Length - displayObject.BatchInformation.IndexCount];
//Copy the first part back (before the display object)
Array.Copy(indices, 0, newIndices, 0, displayObject.BatchInformation.BaseIndexBufferIndex);
//Copy the second part back (after the display object)
Array.Copy(indices, displayObject.BatchInformation.BaseIndexBufferIndex + displayObject.BatchInformation.IndexCount,
newIndices, displayObject.BatchInformation.BaseIndexBufferIndex,
indices.Length - (displayObject.BatchInformation.BaseIndexBufferIndex + displayObject.BatchInformation.IndexCount));
indices = newIndices;
//The index buffer's data is now wrong though. We deleted a bunch of vertices.
//So go through the index buffer starting at the point of deletion and decrease the values appropriately.
for (int i = displayObject.BatchInformation.BaseIndexBufferIndex; i < indices.Length; i++)
indices[i] -= (ushort)displayObject.BatchInformation.VertexCount;
//Modify instancing indices
var newInstancedVertices = new InstancedVertex[instancedVertices.Length - displayObject.BatchInformation.VertexCount];
//Copy the first part back (before the display object)
Array.Copy(instancedVertices, 0, newInstancedVertices, 0, displayObject.BatchInformation.BaseVertexBufferIndex);
//Copy the second part back (after the display object)
Array.Copy(instancedVertices, displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount,
newInstancedVertices, displayObject.BatchInformation.BaseVertexBufferIndex,
instancedVertices.Length - (displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount));
instancedVertices = newInstancedVertices;
//Like with the index buffer, go through the buffer starting at the point of deletion and decrease the values appropriately.
for (int i = displayObject.BatchInformation.BaseVertexBufferIndex; i < instancedVertices.Length; i++)
instancedVertices[i].InstanceIndex--;
displayObjects.Remove(displayObject);
//Move the subsequent display objects list indices and base vertices/indices.
for (int i = displayObject.BatchInformation.BatchListIndex; i < DisplayObjects.Count; i++)
{
DisplayObjects[i].BatchInformation.BatchListIndex--;
DisplayObjects[i].BatchInformation.BaseVertexBufferIndex -= displayObject.BatchInformation.VertexCount;
DisplayObjects[i].BatchInformation.BaseIndexBufferIndex -= displayObject.BatchInformation.IndexCount;
}
// Tell ModelDisplayObject that it got removed (batch, indices).
displayObject.ClearBatchReferences();
//If there weren't any vertices, this batch is about to die.
if (displayObjects.Count > 0)
{
vertexBuffer = new VertexBuffer(graphicsDevice, VertexPositionNormalTexture.VertexDeclaration, vertices.Length, BufferUsage.WriteOnly);
vertexBuffer.SetData(vertices);
instancingBuffer = new VertexBuffer(graphicsDevice, InstancedVertex.VertexDeclaration, instancedVertices.Length, BufferUsage.WriteOnly);
instancingBuffer.SetData(instancedVertices);
indexBuffer = new IndexBuffer(graphicsDevice, IndexElementSize.SixteenBits, indices.Length, BufferUsage.WriteOnly);
indexBuffer.SetData(indices);
bindings = new VertexBufferBinding[] { vertexBuffer, instancingBuffer };
}
}
/// <summary>
/// Removes a display object from the batch.
/// </summary>
/// <param name="displayObject">Display object to remove.</param>
/// <param name="drawer">Instanced model drawer doing the removal.</param>
public void Remove(ModelDisplayObject displayObject, InstancedModelDrawer drawer)
{
//Modify vertex buffer
var newVertices = new VertexPositionNormalTexture[vertices.Length - displayObject.BatchInformation.VertexCount];
//Copy the first part back (before the display object)
Array.Copy(vertices, 0, newVertices, 0, displayObject.BatchInformation.BaseVertexBufferIndex);
//Copy the second part back (after the display object)
Array.Copy(vertices, displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount,
newVertices, displayObject.BatchInformation.BaseVertexBufferIndex,
vertices.Length - (displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount));
vertices = newVertices;
//Modify index buffer
var newIndices = new ushort[indices.Length - displayObject.BatchInformation.IndexCount];
//Copy the first part back (before the display object)
Array.Copy(indices, 0, newIndices, 0, displayObject.BatchInformation.BaseIndexBufferIndex);
//Copy the second part back (after the display object)
Array.Copy(indices, displayObject.BatchInformation.BaseIndexBufferIndex + displayObject.BatchInformation.IndexCount,
newIndices, displayObject.BatchInformation.BaseIndexBufferIndex,
indices.Length - (displayObject.BatchInformation.BaseIndexBufferIndex + displayObject.BatchInformation.IndexCount));
indices = newIndices;
//The index buffer's data is now wrong though. We deleted a bunch of vertices.
//So go through the index buffer starting at the point of deletion and decrease the values appropriately.
for (int i = displayObject.BatchInformation.BaseIndexBufferIndex; i < indices.Length; i++)
{
indices[i] -= (ushort)displayObject.BatchInformation.VertexCount;
}
//Modify instancing indices
var newInstancedVertices = new InstancedVertex[instancedVertices.Length - displayObject.BatchInformation.VertexCount];
//Copy the first part back (before the display object)
Array.Copy(instancedVertices, 0, newInstancedVertices, 0, displayObject.BatchInformation.BaseVertexBufferIndex);
//Copy the second part back (after the display object)
Array.Copy(instancedVertices, displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount,
newInstancedVertices, displayObject.BatchInformation.BaseVertexBufferIndex,
instancedVertices.Length - (displayObject.BatchInformation.BaseVertexBufferIndex + displayObject.BatchInformation.VertexCount));
instancedVertices = newInstancedVertices;
//Like with the index buffer, go through the buffer starting at the point of deletion and decrease the values appropriately.
for (int i = displayObject.BatchInformation.BaseVertexBufferIndex; i < instancedVertices.Length; i++)
{
instancedVertices[i].InstanceIndex--;
}
displayObjects.Remove(displayObject);
//Move the subsequent display objects list indices and base vertices/indices.
for (int i = displayObject.BatchInformation.BatchListIndex; i < DisplayObjects.Count; i++)
{
DisplayObjects[i].BatchInformation.BatchListIndex--;
DisplayObjects[i].BatchInformation.BaseVertexBufferIndex -= displayObject.BatchInformation.VertexCount;
DisplayObjects[i].BatchInformation.BaseIndexBufferIndex -= displayObject.BatchInformation.IndexCount;
}
// Tell ModelDisplayObject that it got removed (batch, indices).
displayObject.ClearBatchReferences();
//If there weren't any vertices, this batch is about to die.
if (displayObjects.Count > 0)
{
vertexBuffer = new VertexBuffer(graphicsDevice, VertexPositionNormalTexture.VertexDeclaration, vertices.Length, BufferUsage.WriteOnly);
vertexBuffer.SetData(vertices);
instancingBuffer = new VertexBuffer(graphicsDevice, InstancedVertex.VertexDeclaration, instancedVertices.Length, BufferUsage.WriteOnly);
instancingBuffer.SetData(instancedVertices);
indexBuffer = new IndexBuffer(graphicsDevice, IndexElementSize.SixteenBits, indices.Length, BufferUsage.WriteOnly);
indexBuffer.SetData(indices);
bindings = new VertexBufferBinding[] { vertexBuffer, instancingBuffer };
}
}
