mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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220 lines
8.9 KiB
C++
220 lines
8.9 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_KERNEL_BATCH_FACTORY_H
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#define FAR_KERNEL_BATCH_FACTORY_H
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#include "../version.h"
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#include "../far/kernelBatch.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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class FarVertexKernelBatchFactory {
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public:
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/// Constructor.
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///
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/// @param start index of the first vertex in the batch
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///
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/// @param end index of the last vertex in the batch
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///
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FarVertexKernelBatchFactory(int start, int end) {
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kernelB.start = kernelA1.start = kernelA2.start = start;
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kernelB.end = kernelA1.end = kernelA2.end = end;
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}
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/// Adds a vertex-vertex to the appropriate compute batch based on "Rank".
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/// Ranking is based on the interpolation required (Smooth, Dart, Crease,
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/// or Corner). With semi-sharp creases, two passes of interpolation are
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/// required, from which we derive a matrix of compute kernel combinations.
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///
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/// The kernel combinatorial matrix :
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///
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/// Rules +----+----+----+----+----+----+----+----+----+----+
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/// Pass 0 | Dt | Sm | Sm | Dt | Sm | Dt | Sm | Cr | Co | Cr |
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/// Pass 1 | | | | Co | Co | Cr | Cr | Co | | |
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/// Kernel +----+----+----+----+----+----+----+----+----+----+
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/// Pass 0 | B | B | B | B | B | B | B | A | A | A |
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/// Pass 1 | | | | A | A | A | A | A | | |
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/// +----+----+----+----+----+----+----+----+----+----+
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/// Rank | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
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/// +----+----+----+----+----+----+----+----+----+----+
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/// with :
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/// - A : compute kernel applying k_Crease / k_Corner rules
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/// - B : compute kernel applying k_Smooth / k_Dart rules
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///
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/// @param index the index of the vertex
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///
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/// @param rank the rank of the vertex (see
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/// FarSubdivisionTables::GetMaskRanking())
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///
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void AddVertex( int index, int rank );
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/// Appends a FarKernelBatch to a vector of batches for Catmark subdivision
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///
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/// @param level the subdivision level of the vertices in the batch
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///
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/// @param tableOffset XXXX
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///
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/// @param vertexOffset XXXX
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///
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/// @param result the expanded batch vector
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///
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void AppendCatmarkBatches(int level, int tableOffset, int vertexOffset, FarKernelBatchVector *result);
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/// Appends a FarKernelBatch to a vector of batches for Loop subdivision
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///
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/// @param level the subdivision level of the vertices in the batch
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///
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/// @param tableOffset XXXX
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///
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/// @param vertexOffset XXXX
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///
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/// @param result the expanded batch vector
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///
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void AppendLoopBatches(int level, int tableOffset, int vertexOffset, FarKernelBatchVector *result);
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private:
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struct Range {
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int start,
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end;
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};
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Range kernelB; // vertex batch reange (kernel B)
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Range kernelA1; // vertex batch reange (kernel A pass 1)
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Range kernelA2; // vertex batch reange (kernel A pass 2)
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};
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inline void
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FarVertexKernelBatchFactory::AddVertex( int index, int rank ) {
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// expand the range of kernel batches based on vertex index and rank
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if (rank<7) {
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if (index < kernelB.start)
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kernelB.start=index;
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if (index > kernelB.end)
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kernelB.end=index;
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}
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if ((rank>2) and (rank<8)) {
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if (index < kernelA2.start)
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kernelA2.start=index;
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if (index > kernelA2.end)
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kernelA2.end=index;
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}
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if (rank>6) {
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if (index < kernelA1.start)
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kernelA1.start=index;
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if (index > kernelA1.end)
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kernelA1.end=index;
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}
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}
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inline void
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FarVertexKernelBatchFactory::AppendCatmarkBatches(int level,
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int tableOffset,
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int vertexOffset,
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FarKernelBatchVector *result) {
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if (kernelB.end >= kernelB.start)
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result->push_back(FarKernelBatch( FarKernelBatch::CATMARK_VERT_VERTEX_B, level, 0,
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kernelB.start, kernelB.end+1,
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tableOffset, vertexOffset) );
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if (kernelA1.end >= kernelA1.start)
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result->push_back(FarKernelBatch( FarKernelBatch::CATMARK_VERT_VERTEX_A1, level, 0,
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kernelA1.start, kernelA1.end+1,
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tableOffset, vertexOffset));
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if (kernelA2.end >= kernelA2.start)
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result->push_back(FarKernelBatch( FarKernelBatch::CATMARK_VERT_VERTEX_A2, level, 0,
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kernelA2.start, kernelA2.end+1,
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tableOffset, vertexOffset) );
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}
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inline void
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FarVertexKernelBatchFactory::AppendLoopBatches(int level,
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int tableOffset,
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int vertexOffset,
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FarKernelBatchVector *result) {
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if (kernelB.end >= kernelB.start)
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result->push_back(FarKernelBatch( FarKernelBatch::LOOP_VERT_VERTEX_B, level, 0,
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kernelB.start, kernelB.end+1,
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tableOffset, vertexOffset) );
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if (kernelA1.end >= kernelA1.start)
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result->push_back(FarKernelBatch( FarKernelBatch::LOOP_VERT_VERTEX_A1, level, 0,
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kernelA1.start, kernelA1.end+1,
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tableOffset, vertexOffset) );
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if (kernelA2.end >= kernelA2.start)
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result->push_back(FarKernelBatch( FarKernelBatch::LOOP_VERT_VERTEX_A2, level, 0,
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kernelA2.start, kernelA2.end+1,
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tableOffset, vertexOffset) );
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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_KERNEL_BATCH_FACTORY_H */
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