mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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99 lines
3.4 KiB
C++
99 lines
3.4 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 "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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//
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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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//
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// You may obtain a copy of the Apache 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, 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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//
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#ifndef OSDUTIL_MULTI_MESH_FACTORY_H
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#define OSDUTIL_MULTI_MESH_FACTORY_H
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#include "../version.h"
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#include "../far/mesh.h"
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#include "../far/meshFactory.h"
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#include "../far/patchTablesFactory.h"
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#include "../far/vertexEditTablesFactory.h"
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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/// \brief A specialized factory for batching meshes
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///
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/// Because meshes require multiple draw calls in order to process the different
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/// types of patches, it is useful to have the ability of grouping the tables of
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/// multiple meshes into a single set of tables. This factory builds upon the
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/// specialized Far factories in order to provide this batching functionality.
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///
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template <class T, class U=T> class OsdUtilMultiMeshFactory {
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public:
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typedef std::vector<FarMesh<U> const *> FarMeshVector;
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/// \brief Constructor.
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OsdUtilMultiMeshFactory();
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/// \brief Splices a vector of Far meshes into a single Far mesh
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///
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/// @param meshes a vector of Far meshes to splice
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///
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/// @return the resulting spliced Far mesh
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///
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FarMesh<U> * Create(std::vector<FarMesh<U> const *> const &meshes);
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std::vector<FarPatchTables::PatchArrayVector> const & GetMultiPatchArrays() {
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return _multiPatchArrays;
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}
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private:
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// patch arrays for each mesh
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std::vector<FarPatchTables::PatchArrayVector> _multiPatchArrays;
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};
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template <class T, class U>
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OsdUtilMultiMeshFactory<T, U>::OsdUtilMultiMeshFactory() {
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}
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template <class T, class U> FarMesh<U> *
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OsdUtilMultiMeshFactory<T, U>::Create(std::vector<FarMesh<U> const *> const &meshes) {
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// splice subdivision tables
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FarKernelBatchVector batches;
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FarSubdivisionTables *subdivisionTables = FarSubdivisionTablesFactory<T, U>::Splice(meshes, &batches);
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// splice patch/quad index tables
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FarPatchTables *patchTables = FarPatchTablesFactory<T>::Splice(meshes,
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&_multiPatchArrays);
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// splice vertex edit tables
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FarVertexEditTables *vertexEditTables = FarVertexEditTablesFactory<T, U>::Splice(meshes);
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return new FarMesh<U>(subdivisionTables, patchTables, vertexEditTables, batches);
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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_MULTI_MESH_FACTORY_H */
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