diff options
Diffstat (limited to 'thirdparty/meshoptimizer/simplifier.cpp')
| -rw-r--r-- | thirdparty/meshoptimizer/simplifier.cpp | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/thirdparty/meshoptimizer/simplifier.cpp b/thirdparty/meshoptimizer/simplifier.cpp index 059cabb055..0f10ebef4b 100644 --- a/thirdparty/meshoptimizer/simplifier.cpp +++ b/thirdparty/meshoptimizer/simplifier.cpp @@ -120,8 +120,13 @@ struct PositionHasher { const unsigned int* key = reinterpret_cast<const unsigned int*>(vertex_positions + index * vertex_stride_float); + // scramble bits to make sure that integer coordinates have entropy in lower bits + unsigned int x = key[0] ^ (key[0] >> 17); + unsigned int y = key[1] ^ (key[1] >> 17); + unsigned int z = key[2] ^ (key[2] >> 17); + // Optimized Spatial Hashing for Collision Detection of Deformable Objects - return (key[0] * 73856093) ^ (key[1] * 19349663) ^ (key[2] * 83492791); + return (x * 73856093) ^ (y * 19349663) ^ (z * 83492791); } bool equal(unsigned int lhs, unsigned int rhs) const @@ -1160,7 +1165,7 @@ struct IdHasher struct TriangleHasher { - unsigned int* indices; + const unsigned int* indices; size_t hash(unsigned int i) const { @@ -1375,9 +1380,10 @@ static float interpolate(float y, float x0, float y0, float x1, float y1, float } // namespace meshopt #ifndef NDEBUG -unsigned char* meshopt_simplifyDebugKind = 0; -unsigned int* meshopt_simplifyDebugLoop = 0; -unsigned int* meshopt_simplifyDebugLoopBack = 0; +// Note: this is only exposed for debug visualization purposes; do *not* use these in debug builds +MESHOPTIMIZER_API unsigned char* meshopt_simplifyDebugKind = 0; +MESHOPTIMIZER_API unsigned int* meshopt_simplifyDebugLoop = 0; +MESHOPTIMIZER_API unsigned int* meshopt_simplifyDebugLoopBack = 0; #endif size_t meshopt_simplify(unsigned int* destination, const unsigned int* indices, size_t index_count, const float* vertex_positions_data, size_t vertex_count, size_t vertex_positions_stride, size_t target_index_count, float target_error, float* out_result_error) |