129 lines
3.6 KiB
C++
129 lines
3.6 KiB
C++
//
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// Copyright 2015 Pixar
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//
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// Licensed under the terms set forth in the LICENSE.txt file available at
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// https://opensubdiv.org/license.
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//
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#ifndef OPENSUBDIV3_OSD_CPU_PATCH_TABLE_H
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#define OPENSUBDIV3_OSD_CPU_PATCH_TABLE_H
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#include "../version.h"
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#include <vector>
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#include "../far/patchDescriptor.h"
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#include "../osd/nonCopyable.h"
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#include "../osd/types.h"
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#include <vector>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Far{
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class PatchTable;
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};
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namespace Osd {
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/// \brief Cpu patch table
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///
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/// XXX: We can use just Far::PatchTable for typical CpuEval use cases.
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///
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/// Currently this class exists because of the template resolution
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/// for the CpuEvaluator's generic interface functions
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/// (glEvalLimit example uses), and
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/// device-specific patch tables such as GLPatchTables internally use
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/// as a staging buffer to splice patcharray and interleave sharpnesses.
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///
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/// Ideally Far::PatchTables should have the same data representation
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/// and accessors so that we don't have to copy data unnecessarily.
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///
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class CpuPatchTable {
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public:
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static CpuPatchTable *Create(const Far::PatchTable *patchTable,
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void *deviceContext = NULL) {
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(void)deviceContext; // unused
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return new CpuPatchTable(patchTable);
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}
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explicit CpuPatchTable(const Far::PatchTable *patchTable);
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~CpuPatchTable() {}
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const PatchArray *GetPatchArrayBuffer() const {
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return &_patchArrays[0];
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}
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const int *GetPatchIndexBuffer() const {
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return &_indexBuffer[0];
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}
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const PatchParam *GetPatchParamBuffer() const {
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return &_patchParamBuffer[0];
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}
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size_t GetNumPatchArrays() const {
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return _patchArrays.size();
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}
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size_t GetPatchIndexSize() const {
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return _indexBuffer.size();
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}
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size_t GetPatchParamSize() const {
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return _patchParamBuffer.size();
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}
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const PatchArray *GetVaryingPatchArrayBuffer() const {
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if (_varyingPatchArrays.empty()) {
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return NULL;
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}
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return &_varyingPatchArrays[0];
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}
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const int *GetVaryingPatchIndexBuffer() const {
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if (_varyingIndexBuffer.empty()) {
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return NULL;
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}
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return &_varyingIndexBuffer[0];
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}
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size_t GetVaryingPatchIndexSize() const {
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return _varyingIndexBuffer.size();
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}
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int GetNumFVarChannels() const {
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return (int)_fvarPatchArrays.size();
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}
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const PatchArray *GetFVarPatchArrayBuffer(int fvarChannel = 0) const {
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return &_fvarPatchArrays[fvarChannel][0];
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}
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const int *GetFVarPatchIndexBuffer(int fvarChannel = 0) const {
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return &_fvarIndexBuffers[fvarChannel][0];
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}
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size_t GetFVarPatchIndexSize(int fvarChannel = 0) const {
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return _fvarIndexBuffers[fvarChannel].size();
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}
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const PatchParam *GetFVarPatchParamBuffer(int fvarChannel= 0) const {
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return &_fvarParamBuffers[fvarChannel][0];
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}
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size_t GetFVarPatchParamSize(int fvarChannel = 0) const {
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return _fvarParamBuffers[fvarChannel].size();
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}
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protected:
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PatchArrayVector _patchArrays;
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std::vector<int> _indexBuffer;
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PatchParamVector _patchParamBuffer;
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PatchArrayVector _varyingPatchArrays;
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std::vector<int> _varyingIndexBuffer;
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std::vector< PatchArrayVector > _fvarPatchArrays;
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std::vector< std::vector<int> > _fvarIndexBuffers;
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std::vector< PatchParamVector > _fvarParamBuffers;
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};
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} // end namespace Osd
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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 // OPENSUBDIV3_OSD_CPU_PATCH_TABLE_H
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