209 lines
8.2 KiB
C++
209 lines
8.2 KiB
C++
/* SPDX-FileCopyrightText: 2018 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* Author: Sergey Sharybin. */
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#ifndef OPENSUBDIV_EVALUATOR_IMPL_H_
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#define OPENSUBDIV_EVALUATOR_IMPL_H_
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#ifdef _MSC_VER
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# include <iso646.h>
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#endif
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#include <opensubdiv/far/patchMap.h>
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#include <opensubdiv/far/patchTable.h>
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#include "internal/base/memory.h"
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#include "opensubdiv_capi_type.hh"
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struct OpenSubdiv_Buffer;
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struct OpenSubdiv_EvaluatorCacheImpl;
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struct OpenSubdiv_EvaluatorSettings;
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struct OpenSubdiv_PatchCoord;
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struct OpenSubdiv_TopologyRefiner;
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namespace blender {
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namespace opensubdiv {
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class PatchMap;
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// Wrapper around implementation, which defines API which we are capable to
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// provide over the implementation.
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//
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// TODO(sergey): It is almost the same as C-API object, so ideally need to
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// merge them somehow, but how to do this and keep files with all the templates
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// and such separate?
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class EvalOutputAPI {
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public:
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// Anonymous forward declaration of actual evaluator implementation.
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class EvalOutput;
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// NOTE: PatchMap is not owned, only referenced.
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EvalOutputAPI(EvalOutput *implementation, PatchMap *patch_map);
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~EvalOutputAPI();
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// Set settings for data buffers.
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void setSettings(const OpenSubdiv_EvaluatorSettings *settings);
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// Set coarse positions from a continuous array of coordinates.
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void setCoarsePositions(const float *positions,
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const int start_vertex_index,
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const int num_vertices);
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// Set vertex data from a continuous array of data.
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void setVertexData(const float *data, const int start_vertex_index, const int num_vertices);
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// Set varying data from a continuous array of data.
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void setVaryingData(const float *varying_data,
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const int start_vertex_index,
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const int num_vertices);
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// Set face varying data from a continuous array of data.
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//
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// TODO(sergey): Find a better name for vertex here. It is not the vertex of
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// geometry, but a vertex of UV map.
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void setFaceVaryingData(const int face_varying_channel,
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const float *varying_data,
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const int start_vertex_index,
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const int num_vertices);
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// Set coarse vertex position from a continuous memory buffer where
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// first coordinate starts at offset of `start_offset` and there is `stride`
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// bytes between adjacent vertex coordinates.
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void setCoarsePositionsFromBuffer(const void *buffer,
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const int start_offset,
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const int stride,
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const int start_vertex_index,
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const int num_vertices);
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// Set varying data from a continuous memory buffer where
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// first coordinate starts at offset of `start_offset` and there is `stride`
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// bytes between adjacent vertex coordinates.
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void setVaryingDataFromBuffer(const void *buffer,
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const int start_offset,
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const int stride,
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const int start_vertex_index,
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const int num_vertices);
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// Set face varying data from a continuous memory buffer where
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// first coordinate starts at offset of `start_offset` and there is `stride`
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// bytes between adjacent vertex coordinates.
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//
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// TODO(sergey): Find a better name for vertex here. It is not the vertex of
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// geometry, but a vertex of UV map.
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void setFaceVaryingDataFromBuffer(const int face_varying_channel,
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const void *buffer,
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const int start_offset,
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const int stride,
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const int start_vertex_index,
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const int num_vertices);
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// Refine after coarse positions update.
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void refine();
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// Evaluate given ptex face at given bilinear coordinate.
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// If derivatives are NULL, they will not be evaluated.
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void evaluateLimit(const int ptex_face_index,
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float face_u,
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float face_v,
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float P[3],
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float dPdu[3],
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float dPdv[3]);
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// Evaluate varying data at a given bilinear coordinate of given ptex face.
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void evaluateVertexData(const int ptes_face_index, float face_u, float face_v, float data[]);
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// Evaluate varying data at a given bilinear coordinate of given ptex face.
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void evaluateVarying(const int ptes_face_index, float face_u, float face_v, float varying[3]);
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// Evaluate facee-varying data at a given bilinear coordinate of given
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// ptex face.
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void evaluateFaceVarying(const int face_varying_channel,
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const int ptes_face_index,
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float face_u,
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float face_v,
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float face_varying[2]);
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// Batched evaluation of multiple input coordinates.
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// Evaluate given ptex face at given bilinear coordinate.
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// If derivatives are NULL, they will not be evaluated.
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//
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// NOTE: Output arrays must point to a memory of size float[3]*num_patch_coords.
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void evaluatePatchesLimit(const OpenSubdiv_PatchCoord *patch_coords,
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const int num_patch_coords,
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float *P,
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float *dPdu,
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float *dPdv);
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// Fill the output buffers and variables with data from the PatchMap.
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void getPatchMap(OpenSubdiv_Buffer *patch_map_handles,
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OpenSubdiv_Buffer *patch_map_quadtree,
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int *min_patch_face,
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int *max_patch_face,
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int *max_depth,
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int *patches_are_triangular);
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// Copy the patch arrays buffer used by OpenSubDiv for the source data to the given buffer.
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void fillPatchArraysBuffer(OpenSubdiv_Buffer *patch_arrays_buffer);
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// Wrap the patch index buffer used by OpenSubDiv for the source data with the given buffer.
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void wrapPatchIndexBuffer(OpenSubdiv_Buffer *patch_index_buffer);
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// Wrap the patch param buffer used by OpenSubDiv for the source data with the given buffer.
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void wrapPatchParamBuffer(OpenSubdiv_Buffer *patch_param_buffer);
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// Wrap the buffer used by OpenSubDiv for the source data with the given buffer.
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void wrapSrcBuffer(OpenSubdiv_Buffer *src_buffer);
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// Wrap the buffer used by OpenSubDiv for the extra source data with the given buffer.
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void wrapSrcVertexDataBuffer(OpenSubdiv_Buffer *src_buffer);
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// Copy the patch arrays buffer used by OpenSubDiv for the face varying channel with the given
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// buffer.
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void fillFVarPatchArraysBuffer(const int face_varying_channel,
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OpenSubdiv_Buffer *patch_arrays_buffer);
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// Wrap the patch index buffer used by OpenSubDiv for the face varying channel with the given
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// buffer.
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void wrapFVarPatchIndexBuffer(const int face_varying_channel,
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OpenSubdiv_Buffer *patch_index_buffer);
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// Wrap the patch param buffer used by OpenSubDiv for the face varying channel with the given
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// buffer.
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void wrapFVarPatchParamBuffer(const int face_varying_channel,
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OpenSubdiv_Buffer *patch_param_buffer);
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// Wrap thebuffer used by OpenSubDiv for the face varying channel with the given buffer.
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void wrapFVarSrcBuffer(const int face_varying_channel, OpenSubdiv_Buffer *src_buffer);
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// Return true if source vertex data has been set.
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bool hasVertexData() const;
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protected:
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PatchMap *patch_map_;
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EvalOutput *implementation_;
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};
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} // namespace opensubdiv
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} // namespace blender
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struct OpenSubdiv_EvaluatorImpl {
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public:
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OpenSubdiv_EvaluatorImpl();
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~OpenSubdiv_EvaluatorImpl();
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blender::opensubdiv::EvalOutputAPI *eval_output;
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const blender::opensubdiv::PatchMap *patch_map;
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const OpenSubdiv::Far::PatchTable *patch_table;
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MEM_CXX_CLASS_ALLOC_FUNCS("OpenSubdiv_EvaluatorImpl");
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};
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OpenSubdiv_EvaluatorImpl *openSubdiv_createEvaluatorInternal(
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struct OpenSubdiv_TopologyRefiner *topology_refiner,
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eOpenSubdivEvaluator evaluator_type,
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OpenSubdiv_EvaluatorCacheImpl *evaluator_cache_descr);
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void openSubdiv_deleteEvaluatorInternal(OpenSubdiv_EvaluatorImpl *evaluator);
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#endif // OPENSUBDIV_EVALUATOR_IMPL_H_
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