mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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232 lines
8.4 KiB
C++
232 lines
8.4 KiB
C++
//
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// Copyright (C) Pixar. All rights reserved.
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//
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// This license governs use of the accompanying software. If you
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// use the software, you accept this license. If you do not accept
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// the license, do not use the software.
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//
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// 1. Definitions
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// The terms "reproduce," "reproduction," "derivative works," and
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// "distribution" have the same meaning here as under U.S.
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// copyright law. A "contribution" is the original software, or
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// any additions or changes to the software.
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// A "contributor" is any person or entity that distributes its
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// contribution under this license.
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// "Licensed patents" are a contributor's patent claims that read
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// directly on its contribution.
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//
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// 2. Grant of Rights
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// (A) Copyright Grant- Subject to the terms of this license,
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// including the license conditions and limitations in section 3,
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// each contributor grants you a non-exclusive, worldwide,
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// royalty-free copyright license to reproduce its contribution,
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// prepare derivative works of its contribution, and distribute
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// its contribution or any derivative works that you create.
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// (B) Patent Grant- Subject to the terms of this license,
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// including the license conditions and limitations in section 3,
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// each contributor grants you a non-exclusive, worldwide,
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// royalty-free license under its licensed patents to make, have
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// made, use, sell, offer for sale, import, and/or otherwise
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// dispose of its contribution in the software or derivative works
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// of the contribution in the software.
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//
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// 3. Conditions and Limitations
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// (A) No Trademark License- This license does not grant you
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// rights to use any contributor's name, logo, or trademarks.
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// (B) If you bring a patent claim against any contributor over
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// patents that you claim are infringed by the software, your
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// patent license from such contributor to the software ends
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// automatically.
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// (C) If you distribute any portion of the software, you must
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// retain all copyright, patent, trademark, and attribution
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// notices that are present in the software.
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// (D) If you distribute any portion of the software in source
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// code form, you may do so only under this license by including a
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// complete copy of this license with your distribution. If you
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// distribute any portion of the software in compiled or object
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// code form, you may only do so under a license that complies
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// with this license.
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// (E) The software is licensed "as-is." You bear the risk of
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// using it. The contributors give no express warranties,
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// guarantees or conditions. You may have additional consumer
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// rights under your local laws which this license cannot change.
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// To the extent permitted under your local laws, the contributors
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// exclude the implied warranties of merchantability, fitness for
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// a particular purpose and non-infringement.
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//
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#ifndef FAR_VERTEX_EDIT_TABLES_H
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#define FAR_VERTEX_EDIT_TABLES_H
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#include "../version.h"
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#include <assert.h>
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#include <utility>
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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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/// \brief A serialized container for hierarchical edits.
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///
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/// Some of the hierarchical edits are resolved into the vertex weights computed
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/// into the FarSubdivision tables. Certain edits however have to be "post-processed"
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/// after the tables are applied to the vertices and require their HBR representation
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/// to be serialized into a specific container.
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///
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class FarVertexEdit {
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public:
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/// Type of edit operation - equivalent to HbrHiearachicalEdit<T>::Operation
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enum Operation {
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Set,
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Add
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/// Note : subtract edits are converted to Add edits for better serialization
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};
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/// Get the type of operation
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Operation GetOperation() const { return _op; }
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/// Return index of variable this edit applies to
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int GetIndex() const { return _index; }
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/// Return width of the variable
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int GetWidth() const { return _width; }
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/// Get the numerical value of the edit
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const float* GetEdit() const { return _edit; }
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private:
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template <class U> friend class FarVertexEditTables;
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FarVertexEdit(Operation op, int index, int width) :
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_op(op), _edit(0), _index(index), _width(width)
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{ }
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void SetEdit(float const * edit) { _edit=edit; }
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Operation _op;
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float const * _edit;
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int _index,
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_width;
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};
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template <class U> class FarVertexEditTables {
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public:
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FarVertexEditTables( FarMesh<U> * mesh );
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// Note : Subtract type edits are converted into Adds in order to save kernel calls.
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int GetNumBatches() const {
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return (int)_batches.size();
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}
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// This class holds an array of edits. each batch has unique index/width/operation
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class VertexEditBatch {
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public:
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VertexEditBatch(int index, int width, FarVertexEdit::Operation operation);
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// copy vertex id and edit values into table
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void Append(int level, int vertexID, const float *values, bool negate);
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// Compute-kernel applied to vertices
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void ApplyVertexEdits(U * vsrc, int offset, int tableOffset, int start, int end) const;
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// Edit tables accessors
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// Returns the edit offset table
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const std::vector<unsigned int> &GetVertexIndices() const { return _vertIndices; }
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// Returns the edit values table
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const std::vector<float> &GetValues() const { return _edits; }
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FarVertexEdit::Operation GetOperation() const { return _op; }
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int GetPrimvarIndex() const { return _primvarIndex; }
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int GetPrimvarWidth() const { return _primvarWidth; }
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private:
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template <class X, class Y> friend class FarVertexEditTablesFactory;
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template <class X, class Y> friend class FarMultiMeshFactory;
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std::vector<unsigned int> _vertIndices; // absolute vertex index array for edits
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std::vector<float> _edits; // edit values array
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int _primvarIndex, // primvar offset in vertex
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_primvarWidth; // numElements per vertex in values
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FarVertexEdit::Operation _op; // edit operation (Set, Add)
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};
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VertexEditBatch const & GetBatch(int index) const {
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return _batches[index];
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}
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private:
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template <class X, class Y> friend class FarVertexEditTablesFactory;
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template <class X, class Y> friend class FarMultiMeshFactory;
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template <class CONTROLLER> friend class FarComputeController;
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// Compute-kernel that applies the edits
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void computeVertexEdits(int tableIndex, int offset, int tableOffset, int start, int end, void *clientdata) const;
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// mesh that owns this vertexEditTable
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FarMesh<U> * _mesh;
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#if defined(__GNUC__)
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// XXX(dyu): seems like there is a compiler bug in g++ that requires
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// this struct to be public
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public:
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#endif
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std::vector<VertexEditBatch> _batches;
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};
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template <class U>
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FarVertexEditTables<U>::VertexEditBatch::VertexEditBatch(int index, int width, FarVertexEdit::Operation op) :
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_primvarIndex(index),
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_primvarWidth(width),
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_op(op) {
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}
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template <class U>
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void
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FarVertexEditTables<U>::VertexEditBatch::ApplyVertexEdits(U * vsrc, int vertexOffset, int tableOffset, int start, int end) const
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{
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int primvarWidth = GetPrimvarWidth();
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assert(tableOffset+end <= (int)_vertIndices.size());
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const unsigned int * vindices = &_vertIndices[tableOffset];
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const float * values = &_edits[tableOffset * primvarWidth];
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FarVertexEdit edit( GetOperation(), GetPrimvarIndex(), GetPrimvarWidth() );
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for (int i=start; i<end; ++i) {
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U * vdst = vsrc + vindices[i] + vertexOffset;
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edit.SetEdit(const_cast<float*>(&values[i*primvarWidth]));
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vdst->ApplyVertexEdit(edit);
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}
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}
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template <class U>
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FarVertexEditTables<U>::FarVertexEditTables( FarMesh<U> * mesh ) :
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_mesh(mesh) {
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}
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template <class U> void
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FarVertexEditTables<U>::computeVertexEdits(int tableIndex, int offset, int tableOffset, int start, int end, void *clientdata) const {
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assert(this->_mesh);
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U * vsrc = &this->_mesh->GetVertices().at(0);
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_batches[tableIndex].ApplyVertexEdits(vsrc, offset, tableOffset, start, end);
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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 /* FAR_VERTEX_EDIT_TABLES_H */
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