mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-04 17:00:06 +00:00
464 lines
18 KiB
C++
464 lines
18 KiB
C++
//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License
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// and the following modification to it: Section 6 Trademarks.
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// deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the
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// trade names, trademarks, service marks, or product names of the
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// Licensor and its affiliates, except as required for reproducing
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// the content of the NOTICE file.
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//
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific
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// language governing permissions and limitations under the
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// License.
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//
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#ifndef OSDUTIL_MESH_BATCH_H
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#define OSDUTIL_MESH_BATCH_H
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#include "../version.h"
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#include "../far/multiMeshFactory.h"
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#include "../far/patchTables.h"
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#include "../osd/vertexDescriptor.h"
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#include <vector>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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template <class U> class FarMesh;
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class OsdVertex;
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// ----------------------------------------------------------------------------
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// OsdUtilMeshBatchEntry
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//
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//
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//
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struct OsdUtilMeshBatchEntry {
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OsdDrawContext::PatchArrayVector patchArrays;
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int vertexOffset; // relative offset to first coarse vertex in vbo
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int ptexFaceOffset; // relative offset to first ptex face ID
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};
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typedef std::vector<OsdUtilMeshBatchEntry> OsdUtilMeshBatchEntryVector;
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// ----------------------------------------------------------------------------
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// OsdUtilMeshBatchBase
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//
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// base batching class which holds kernel batches and patch arrays.
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//
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template <typename DRAW_CONTEXT>
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class OsdUtilMeshBatchBase {
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public:
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typedef DRAW_CONTEXT DrawContext;
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virtual ~OsdUtilMeshBatchBase();
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virtual typename DrawContext::VertexBufferBinding BindVertexBuffer() = 0;
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virtual typename DrawContext::VertexBufferBinding BindVaryingBuffer() = 0;
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virtual DrawContext * GetDrawContext() const = 0;
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// entry accessors
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int GetVertexOffset(int meshIndex) const
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{ return _entries[meshIndex].vertexOffset; }
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int GetPtexFaceOffset(int meshIndex) const
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{ return _entries[meshIndex].ptexFaceOffset; }
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OsdDrawContext::PatchArrayVector const & GetPatchArrays(int meshIndex) const
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{ return _entries[meshIndex].patchArrays; }
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// update APIs
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virtual void UpdateCoarseVertices(int meshIndex, const float *data, int numVertices) = 0;
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virtual void UpdateCoarseVaryings(int meshIndex, const float *data, int numVertices) = 0;
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virtual void FinalizeUpdate() = 0;
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int GetBatchIndex() const { return _batchIndex; }
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int GetNumVertices() const { return _numVertices; }
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int GetNumPtexFaces() const { return _numPtexFaces; }
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protected:
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OsdUtilMeshBatchBase() {}
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bool initialize(OsdUtilMeshBatchEntryVector const & entries,
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int numVertices,
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int numPtexFaces,
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int numVertexElements,
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int batchIndex);
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void setKernelBatches(FarKernelBatchVector const &batches);
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void setMeshDirty(int meshIndex);
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void resetMeshDirty();
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void populateDirtyKernelBatches(FarKernelBatchVector &result);
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private:
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// compute batch
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FarKernelBatchVector _allKernelBatches;
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// drawing batch entries
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OsdUtilMeshBatchEntryVector _entries;
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// update flags
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std::vector<bool> _dirtyFlags; // same size as _entries
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int _numVertices;
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int _numPtexFaces;
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int _batchIndex;
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};
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// ----------------------------------------------------------------------------
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// OsdUtilMeshBatch
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//
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// derived batching class which contains vertexbuffer, computecontext, drawcontext
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//
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template <typename VERTEX_BUFFER, typename DRAW_CONTEXT, typename COMPUTE_CONTROLLER>
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class OsdUtilMeshBatch : public OsdUtilMeshBatchBase<DRAW_CONTEXT> {
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public:
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typedef VERTEX_BUFFER VertexBuffer;
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typedef typename COMPUTE_CONTROLLER::ComputeContext ComputeContext;
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typedef DRAW_CONTEXT DrawContext;
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typedef COMPUTE_CONTROLLER ComputeController;
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typedef OsdUtilMeshBatchBase<DRAW_CONTEXT> Base;
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// constructor from far mesh vector
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// XXX: not happy with retaining compute controller..
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static OsdUtilMeshBatch *Create(ComputeController *computeController,
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std::vector<FarMesh<OsdVertex> const * > const &meshVector,
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int numVertexElements,
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int numVaryingElements,
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int batchIndex,
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bool requireFVarData=false);
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// constructor (for client defined arbitrary patches)
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static OsdUtilMeshBatch *Create(FarPatchTables const *patchTables,
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OsdUtilMeshBatchEntryVector const &entries,
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int numVertices,
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int numPtexFaces,
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int numVertexElements,
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int numVaryingElements,
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int batchIndex,
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bool requireFVarData=false);
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virtual ~OsdUtilMeshBatch();
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virtual typename DrawContext::VertexBufferBinding BindVertexBuffer() {
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if (not _vertexBuffer)
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return 0;
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return _vertexBuffer->BindVBO();
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}
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virtual typename DrawContext::VertexBufferBinding BindVaryingBuffer() {
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if (not _varyingBuffer)
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return 0;
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return _varyingBuffer->BindVBO();
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}
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virtual DrawContext * GetDrawContext() const { return _drawContext; }
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// update APIs
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virtual void UpdateCoarseVertices(int meshIndex, const float *data, int numVertices) {
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if (not _vertexBuffer)
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return;
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Base::setMeshDirty(meshIndex);
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_vertexBuffer->UpdateData(data, Base::GetVertexOffset(meshIndex), numVertices);
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}
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virtual void UpdateCoarseVaryings(int meshIndex, const float *data, int numVertices) {
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if (not _varyingBuffer)
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return;
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Base::setMeshDirty(meshIndex);
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_varyingBuffer->UpdateData(data, Base::GetVertexOffset(meshIndex), numVertices);
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}
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virtual void FinalizeUpdate() {
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// create kernel batch for dirty handles
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if (not _computeController)
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return;
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FarKernelBatchVector batches;
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Base::populateDirtyKernelBatches(batches);
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Base::resetMeshDirty();
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_computeController->Refine(_computeContext, batches, _vertexBuffer, _varyingBuffer);
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}
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VertexBuffer *GetVertexBuffer() const { return _vertexBuffer; }
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VertexBuffer *GetVaryingBuffer() const { return _varyingBuffer; }
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private:
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OsdUtilMeshBatch();
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bool initialize(ComputeController *computeController,
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OsdUtilMeshBatchEntryVector const &entries,
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FarMesh<OsdVertex> const *farMultiMesh,
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int numVertexElements,
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int numVaryingElements,
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int batchIndex,
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bool requireFVarData);
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bool initialize(FarPatchTables const *patchTables,
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OsdUtilMeshBatchEntryVector const &entries,
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int numVertices,
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int numPtexFaces,
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int numVertexElements,
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int numVaryingElements,
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int batchIndex,
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bool requireFVarData);
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ComputeController *_computeController;
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ComputeContext *_computeContext;
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VertexBuffer *_vertexBuffer, *_varyingBuffer;
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DrawContext *_drawContext;
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};
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// -----------------------------------------------------------------------------
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template <typename DRAW_CONTEXT> bool
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OsdUtilMeshBatchBase<DRAW_CONTEXT>::initialize(OsdUtilMeshBatchEntryVector const & entries,
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int numVertices,
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int numPtexFaces,
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int numVertexElements,
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int batchIndex) {
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_entries = entries;
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_numVertices = numVertices;
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_numPtexFaces = numPtexFaces;
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_batchIndex = batchIndex;
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// update patcharrays in entries
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for (int i = 0; i < (int)_entries.size(); ++i) {
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for (int j = 0; j < (int)_entries[i].patchArrays.size(); ++j) {
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OsdDrawContext::PatchDescriptor desc = _entries[i].patchArrays[j].GetDescriptor();
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desc.SetNumElements(numVertexElements);
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_entries[i].patchArrays[j].SetDescriptor(desc);
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}
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}
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// init dirty flags
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_dirtyFlags.resize(entries.size());
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resetMeshDirty();
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return true;
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}
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template <typename DRAW_CONTEXT>
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OsdUtilMeshBatchBase<DRAW_CONTEXT>::~OsdUtilMeshBatchBase() {
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}
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template <typename DRAW_CONTEXT> void
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OsdUtilMeshBatchBase<DRAW_CONTEXT>::setMeshDirty(int meshIndex) {
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assert(meshIndex < (int)_dirtyFlags.size());
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_dirtyFlags[meshIndex] = true;
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}
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template <typename DRAW_CONTEXT> void
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OsdUtilMeshBatchBase<DRAW_CONTEXT>::resetMeshDirty() {
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std::fill(_dirtyFlags.begin(), _dirtyFlags.end(), false);
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}
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template <typename DRAW_CONTEXT> void
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OsdUtilMeshBatchBase<DRAW_CONTEXT>::setKernelBatches(FarKernelBatchVector const &batches) {
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_allKernelBatches = batches;
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}
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template <typename DRAW_CONTEXT> void
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OsdUtilMeshBatchBase<DRAW_CONTEXT>::populateDirtyKernelBatches(FarKernelBatchVector &result) {
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result.clear();
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for (FarKernelBatchVector::const_iterator it = _allKernelBatches.begin();
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it != _allKernelBatches.end(); ++it) {
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if (_dirtyFlags[it->GetMeshIndex()]) {
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result.push_back(*it);
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}
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}
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}
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// -----------------------------------------------------------------------------
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inline FarMesh<OsdVertex> *
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createMultiMesh(std::vector<FarMesh<OsdVertex> const * > const & meshVector,
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std::vector<FarPatchTables::PatchArrayVector> & multiFarPatchArray) {
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// create multimesh
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FarMultiMeshFactory<OsdVertex> multiMeshFactory;
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FarMesh <OsdVertex> *farMultiMesh = multiMeshFactory.Create(meshVector);
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// return patch arrays
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multiFarPatchArray = multiMeshFactory.GetMultiPatchArrays();
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return farMultiMesh;
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}
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inline void
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createEntries(OsdUtilMeshBatchEntryVector &result,
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std::vector<FarPatchTables::PatchArrayVector> const & multiFarPatchArray,
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int maxValence,
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std::vector<FarMesh<OsdVertex> const * > const & meshVector) {
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// create osd patch array per mesh (note: numVertexElements will be updated later)
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int numEntries = (int)multiFarPatchArray.size();
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result.resize(numEntries);
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for (int i = 0; i < numEntries; ++i) {
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OsdDrawContext::ConvertPatchArrays(multiFarPatchArray[i],
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result[i].patchArrays,
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maxValence, 0);
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}
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// set entries
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int vertexOffset = 0, ptexFaceOffset = 0;
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for (size_t i = 0; i < meshVector.size(); ++i) {
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int numVertices = meshVector[i]->GetNumVertices();
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int numPtexFaces = meshVector[i]->GetNumPtexFaces();
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result[i].vertexOffset = vertexOffset;
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result[i].ptexFaceOffset = ptexFaceOffset;
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vertexOffset += numVertices;
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ptexFaceOffset += numPtexFaces;
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}
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}
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template <typename VERTEX_BUFFER, typename DRAW_CONTEXT, typename COMPUTE_CONTROLLER>
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OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER>::OsdUtilMeshBatch() :
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_computeController(NULL), _computeContext(NULL), _vertexBuffer(NULL), _varyingBuffer(NULL), _drawContext(NULL) {
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}
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template <typename VERTEX_BUFFER, typename DRAW_CONTEXT, typename COMPUTE_CONTROLLER> bool
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OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER>::initialize(ComputeController *computeController,
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OsdUtilMeshBatchEntryVector const &entries,
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FarMesh<OsdVertex> const *farMultiMesh,
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int numVertexElements,
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int numVaryingElements,
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int batchIndex,
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bool requireFVarData) {
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Base::initialize(entries, farMultiMesh->GetNumVertices(), farMultiMesh->GetNumPtexFaces(),
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numVertexElements, batchIndex);
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_computeController = computeController;
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// copy batches
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Base::setKernelBatches(farMultiMesh->GetKernelBatches());
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// create compute contexts
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_computeContext = ComputeContext::Create(farMultiMesh);
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if (not _computeContext) return false;
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FarPatchTables const * patchTables = farMultiMesh->GetPatchTables();
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_vertexBuffer = numVertexElements ? VertexBuffer::Create(numVertexElements, Base::GetNumVertices()) : NULL;
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_varyingBuffer = numVaryingElements ? VertexBuffer::Create(numVaryingElements, Base::GetNumVertices()) : NULL;
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_drawContext = DrawContext::Create(patchTables, requireFVarData);
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if (not _drawContext) return false;
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_drawContext->UpdateVertexTexture(_vertexBuffer);
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return true;
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}
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// Constructor from patch table
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template <typename VERTEX_BUFFER, typename DRAW_CONTEXT, typename COMPUTE_CONTROLLER> bool
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OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER>::initialize(FarPatchTables const *patchTables,
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OsdUtilMeshBatchEntryVector const &entries,
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int numVertices, int numPtexFaces,
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int numVertexElements,
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int numVaryingElements,
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int batchIndex,
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bool requireFVarData) {
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Base::initialize(entries, numVertices, numPtexFaces, numVertexElements, batchIndex);
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_vertexBuffer = numVertexElements ? VertexBuffer::Create(numVertexElements, numVertices) : NULL;
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_varyingBuffer = numVaryingElements ? VertexBuffer::Create(numVaryingElements, numVertices) : NULL;
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_drawContext = DrawContext::Create(patchTables, requireFVarData);
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if (not _drawContext) return false;
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_drawContext->UpdateVertexTexture(_vertexBuffer);
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return true;
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}
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template <typename VERTEX_BUFFER, typename DRAW_CONTEXT, typename COMPUTE_CONTROLLER>
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OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER>::~OsdUtilMeshBatch() {
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delete _computeContext;
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delete _drawContext;
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delete _vertexBuffer;
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delete _varyingBuffer;
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}
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template <typename VERTEX_BUFFER, typename DRAW_CONTEXT, typename COMPUTE_CONTROLLER>
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OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER> *
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OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER>::Create(ComputeController *computeController,
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const std::vector<FarMesh<OsdVertex> const * > &meshVector,
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int numVertexElements,
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int numVaryingElements,
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int batchIndex,
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bool requireFVarData)
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{
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std::vector<FarPatchTables::PatchArrayVector> multiFarPatchArray;
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FarMesh <OsdVertex> *farMultiMesh = createMultiMesh(meshVector, multiFarPatchArray);
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FarPatchTables const * patchTables = farMultiMesh->GetPatchTables();
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// create entries
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OsdUtilMeshBatchEntryVector entries;
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createEntries(entries, multiFarPatchArray, patchTables->GetMaxValence(), meshVector);
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OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER> *batch =
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new OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER>();
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batch->initialize(computeController, entries, farMultiMesh, numVertexElements, numVaryingElements, batchIndex, requireFVarData);
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delete farMultiMesh;
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return batch;
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}
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template <typename VERTEX_BUFFER, typename DRAW_CONTEXT, typename COMPUTE_CONTROLLER>
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OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER> *
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OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER>::Create(FarPatchTables const *patchTables,
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OsdUtilMeshBatchEntryVector const &entries,
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int numVertices,
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int numPtexFaces,
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int numVertexElements,
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int numVaryingElements,
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int batchIndex,
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bool requireFVarData)
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{
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OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER> *batch =
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new OsdUtilMeshBatch<VERTEX_BUFFER, DRAW_CONTEXT, COMPUTE_CONTROLLER>();
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batch->initialize(patchTables, entries, numVertices, numPtexFaces, numVertexElements, numVaryingElements, batchIndex, requireFVarData);
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return batch;
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}
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} // end namespace OPENSUBDIV_VERSION
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using namespace OPENSUBDIV_VERSION;
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} // end namespace OpenSubdiv
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#endif /* OSDUTIL_MESH_BATCH_H */
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