patch_table.h

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/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
 *
 * SPDX-License-Identifier: Apache-2.0 */
 
#ifndef __SUBD_PATCH_TABLE_H__
#define __SUBD_PATCH_TABLE_H__
 
#include "util/array.h"
#include "util/types.h"
 
#ifdef WITH_OPENSUBDIV
#  ifdef _MSC_VER
#    include "iso646.h"
#  endif
 
#  include <opensubdiv/far/patchTable.h>
#endif
 
CCL_NAMESPACE_BEGIN
 
#ifdef WITH_OPENSUBDIV
using namespace OpenSubdiv;
#else
/* forward declare for when OpenSubdiv is unavailable */
namespace Far {
struct PatchTable;
}
#endif
 
#define PATCH_ARRAY_SIZE 4
#define PATCH_PARAM_SIZE 2
#define PATCH_HANDLE_SIZE 3
#define PATCH_NODE_SIZE 1
 
struct PackedPatchTable {
  array<uint> table;
 
  size_t num_arrays;
  size_t num_indices;
  size_t num_patches;
  size_t num_nodes;
 
  /* calculated size from num_* members */
  size_t total_size();
 
  void pack(Far::PatchTable *patch_table, int offset = 0);
  void copy_adjusting_offsets(uint *dest, int doffset);
};
 
CCL_NAMESPACE_END
 
#endif /* __SUBD_PATCH_TABLE_H__ */