2012-08-04 02:51:27 +00:00
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//
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2013-09-26 19:04:57 +00:00
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// Copyright 2013 Pixar
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2012-08-04 02:51:27 +00:00
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//
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2013-09-26 19:04:57 +00:00
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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2012-08-04 02:51:27 +00:00
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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2012-08-04 02:51:27 +00:00
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//
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2013-09-26 19:04:57 +00:00
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// You may obtain a copy of the Apache License at
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2012-08-04 02:51:27 +00:00
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//
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2013-09-26 19:04:57 +00:00
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// http://www.apache.org/licenses/LICENSE-2.0
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2013-07-18 21:19:50 +00:00
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//
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2013-09-26 19:04:57 +00:00
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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2012-08-04 02:51:27 +00:00
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//
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2012-12-11 01:15:13 +00:00
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2012-08-04 02:51:27 +00:00
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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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2012-12-11 01:15:13 +00:00
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#include <assert.h>
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#include <utility>
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#include <vector>
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2012-08-04 02:51:27 +00:00
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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2012-10-07 00:53:51 +00:00
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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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/// \brief Get the type of operation
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Operation GetOperation() const { return _op; }
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/// \brief Return index of variable this edit applies to
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int GetIndex() const { return _index; }
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/// \brief Return width of the variable
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int GetWidth() const { return _width; }
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/// \brief 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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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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class FarVertexEditTables {
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public:
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/// \brief Constructor
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FarVertexEditTables( ) { }
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// Note : Subtract type edits are converted into Adds in order to save kernel calls.
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2014-03-20 21:52:42 +00:00
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// Compute-kernel that applies the edits
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template <class CONTEXT>
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void computeVertexEdits(int tableIndex, int offset, int tableOffset, int start, int end, CONTEXT *context) const;
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/// \brief 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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/// \brief Constructor
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VertexEditBatch(int index, int width, FarVertexEdit::Operation operation);
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/// \brief 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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/// \brief Compute-kernel applied to vertices
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template <class U>
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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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/// \brief Returns the edit offset table
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const std::vector<unsigned int> &GetVertexIndices() const { return _vertIndices; }
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/// \brief Returns the edit values table
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const std::vector<float> &GetValues() const { return _edits; }
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/// \brief Returns the edit operand (Set / Add)
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FarVertexEdit::Operation GetOperation() const { return _op; }
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/// \brief Returns the index of the primvar affected by the edit
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int GetPrimvarIndex() const { return _primvarIndex; }
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/// \brief Returns the width of the primvar (number of elements)
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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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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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/// \brief Returns the number of edit batches
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int GetNumBatches() const {
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return (int)_batches.size();
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}
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/// \brief Returns a batch of vertex edits
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///
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/// @param index batch index
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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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2012-12-11 01:15:13 +00:00
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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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inline
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FarVertexEditTables::VertexEditBatch::VertexEditBatch(int index, int width, FarVertexEdit::Operation operation) :
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_primvarIndex(index),
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_primvarWidth(width),
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_op(operation) {
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}
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template <class U>
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void
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FarVertexEditTables::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> void
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FarVertexEditTables::computeVertexEdits(int tableIndex, int offset, int tableOffset, int start, int end, U * vsrc) const {
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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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