diff options
| author | Sergey Sharybin <sergey.vfx@gmail.com> | 2018-03-16 14:11:55 +0300 |
|---|---|---|
| committer | Sergey Sharybin <sergey.vfx@gmail.com> | 2018-03-16 14:11:55 +0300 |
| commit | f0596bf6605b6ad2de12c94c1af47b6fbac241a8 (patch) | |
| tree | 41c92ebd5a3251fad486f993026489ba29a9a8d4 /source/blender/blenlib | |
| parent | 3baf31e73a7176fac8081b6648ce768b9504c2b1 (diff) | |
Hash: Add utility function to convert address to rgb values
Some magic hashing, will become handy to make debug messages
easier to follow.
Diffstat (limited to 'source/blender/blenlib')
| -rw-r--r-- | source/blender/blenlib/BLI_hash.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_hash.h b/source/blender/blenlib/BLI_hash.h index fa79481e25c..9ca7898d6b8 100644 --- a/source/blender/blenlib/BLI_hash.h +++ b/source/blender/blenlib/BLI_hash.h @@ -68,4 +68,16 @@ BLI_INLINE float BLI_hash_int_01(unsigned int k) return (float)BLI_hash_int(k) * (1.0f / (float)0xFFFFFFFF); } +BLI_INLINE void BLI_hash_pointer_to_color(const void *ptr, int *r, int *g, int *b) +{ + size_t val = (size_t)ptr; + const size_t hash_a = BLI_hash_int(val & 0x0000ffff); + const size_t hash_b = BLI_hash_int((val & 0xffff0000) >> 32); + const size_t hash = + hash_a ^ (hash_b + 0x9e3779b9 + (hash_a << 6) + (hash_a >> 2)); + *r = (hash & 0xff0000) >> 16; + *g = (hash & 0x00ff00) >> 8; + *b = hash & 0x0000ff; +} + #endif // __BLI_HASH_H__ |