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Diffstat (limited to 'intern/opensubdiv/internal/opensubdiv_evaluator_internal.h')
| -rw-r--r-- | intern/opensubdiv/internal/opensubdiv_evaluator_internal.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/intern/opensubdiv/internal/opensubdiv_evaluator_internal.h b/intern/opensubdiv/internal/opensubdiv_evaluator_internal.h new file mode 100644 index 00000000000..7d9178f38dc --- /dev/null +++ b/intern/opensubdiv/internal/opensubdiv_evaluator_internal.h @@ -0,0 +1,137 @@ +// Copyright 2018 Blender Foundation. All rights reserved. +// +// This program is free software; you can redistribute it and/or +// modify it under the terms of the GNU General Public License +// as published by the Free Software Foundation; either version 2 +// of the License, or (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software Foundation, +// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +// +// Author: Sergey Sharybin + +#ifndef OPENSUBDIV_EVALUATOR_INTERNAL_H_ +#define OPENSUBDIV_EVALUATOR_INTERNAL_H_ + +#ifdef _MSC_VER +# include <iso646.h> +#endif + +#include <opensubdiv/far/patchMap.h> +#include <opensubdiv/far/patchTable.h> + +struct OpenSubdiv_TopologyRefiner; + +namespace opensubdiv_capi { + +// Anonymous forward declaration of actual evaluator implementation. +class CpuEvalOutput; + +// Wrapper around implementaiton, which defines API which we are capable to +// provide over the implementation. +// +// TODO(sergey): It is almost the same as C-API object, so ideally need to +// merge them somehow, but how to do this and keep files with all the templates +// and such separate? +class CpuEvalOutputAPI { + public: + // NOTE: API object becomes an owner of evaluator. Patch we are referencing. + CpuEvalOutputAPI(CpuEvalOutput* implementation, + OpenSubdiv::Far::PatchMap* patch_map); + ~CpuEvalOutputAPI(); + + // Set coarse positions from a continuous array of coordinates. + void setCoarsePositions(const float* positions, + const int start_vertex_index, + const int num_vertices); + // Set varying data from a continuous array of data. + void setVaryingData(const float* varying_data, + const int start_vertex_index, const int num_vertices); + // Set face varying data from a continuous array of data. + // + // TODO(sergey): Find a better name for vertex here. It is not the vertex of + // geometry, but a vertex of UV map. + void setFaceVaryingData(const int face_varying_channel, + const float* varying_data, + const int start_vertex_index, const int num_vertices); + + // Set coarse vertex position from a continuous memory buffer where + // first coordinate starts at offset of `start_offset` and there is `stride` + // bytes between adjacent vertex coordinates. + void setCoarsePositionsFromBuffer(const void* buffer, + const int start_offset, + const int stride, + const int start_vertex_index, + const int num_vertices); + // Set varying data from a continuous memory buffer where + // first coordinate starts at offset of `start_offset` and there is `stride` + // bytes between adjacent vertex coordinates. + void setVaryingDataFromBuffer(const void* buffer, + const int start_offset, + const int stride, + const int start_vertex_index, + const int num_vertices); + // Set face varying data from a continuous memory buffer where + // first coordinate starts at offset of `start_offset` and there is `stride` + // bytes between adjacent vertex coordinates. + // + // TODO(sergey): Find a better name for vertex here. It is not the vertex of + // geometry, but a vertex of UV map. + void setFaceVaryingDataFromBuffer(const int face_varying_channel, + const void* buffer, + const int start_offset, + const int stride, + const int start_vertex_index, + const int num_vertices); + + // Refine after coarse positions update. + void refine(); + + // Evaluate given ptex face at given bilinear coordinate. + // If derivatives are NULL, they will not be evaluated. + void evaluateLimit(const int ptex_face_index, + float face_u, float face_v, + float P[3], float dPdu[3], float dPdv[3]); + + // Evaluate varying data at a given bilinear coordinate of given ptex face. + void evaluateVarying(const int ptes_face_index, + float face_u, float face_v, + float varying[3]); + + // Evaluate facee-varying data at a given bilinear coordinate of given + // ptex face. + void evaluateFaceVarying(const int face_varying_channel, + const int ptes_face_index, + float face_u, float face_v, + float face_varying[2]); + + protected: + CpuEvalOutput* implementation_; + OpenSubdiv::Far::PatchMap* patch_map_; +}; + +} // namespace opensubdiv_capi + +struct OpenSubdiv_EvaluatorInternal { + public: + OpenSubdiv_EvaluatorInternal(); + ~OpenSubdiv_EvaluatorInternal(); + + opensubdiv_capi::CpuEvalOutputAPI* eval_output; + const OpenSubdiv::Far::PatchMap* patch_map; + const OpenSubdiv::Far::PatchTable* patch_table; +}; + +OpenSubdiv_EvaluatorInternal* openSubdiv_createEvaluatorInternal( + struct OpenSubdiv_TopologyRefiner* topology_refiner); + +void openSubdiv_deleteEvaluatorInternal( + OpenSubdiv_EvaluatorInternal* evaluator); + +#endif // OPENSUBDIV_EVALUATOR_INTERNAL_H_ |