mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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a1c7be7c8e
This set of commits includes the addition of a new evaluation interface that treats a subdivision mesh more like a piecewise parametric surface primitive. The new interface was placed in namespace "Bfr" for "Base Face Representation" as all concepts and classes relate to a single face of the base mesh.
64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
//
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// Copyright 2021 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 OPENSUBDIV3_BFR_HASH_H
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#define OPENSUBDIV3_BFR_HASH_H
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#include "../version.h"
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#include <cstdint>
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#include <cstddef>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Bfr {
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namespace internal {
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//
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// Internal functions to hash data to unsigned ints for caching. Both
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// 32- and 64-bit versions are provided here, but only 64-bit versions
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// are currently intended for internal use (so consider removing 32).
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//
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// To compute a hash value for data that is not contiguous in memory,
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// iterate over all the contiguous blocks of memory and accumulate the
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// hash value by passing it on as a seed. Note that this is *not*
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// equivalent to hashing the contiguous pieces as a whole. Support
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// for that may be added in future.
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//
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uint32_t Hash32(const void *data, size_t len);
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uint32_t Hash32(const void *data, size_t len, uint32_t seed);
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uint64_t Hash64(const void *data, size_t len);
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uint64_t Hash64(const void *data, size_t len, uint64_t seed);
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} // end namespace internal
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} // end namespace Bfr
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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_BFR_HASH_H */
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