diff options
Diffstat (limited to 'source/blender/blenlib/intern/rand.c')
| -rw-r--r-- | source/blender/blenlib/intern/rand.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/source/blender/blenlib/intern/rand.c b/source/blender/blenlib/intern/rand.c index ccc478203fe..c484a307393 100644 --- a/source/blender/blenlib/intern/rand.c +++ b/source/blender/blenlib/intern/rand.c @@ -81,6 +81,16 @@ void rng_seed(RNG *rng, unsigned int seed) { rng->X= (((r_uint64) seed)<<16) | LOWSEED; } +void rng_srandom(RNG *rng, unsigned int seed) { + extern unsigned char hash[]; // noise.c + + rng_seed(rng, seed + hash[seed & 255]); + seed= rng_getInt(rng); + rng_seed(rng, seed + hash[seed & 255]); + seed= rng_getInt(rng); + rng_seed(rng, seed + hash[seed & 255]); +} + int rng_getInt(RNG *rng) { rng->X= (MULTIPLIER*rng->X + ADDEND)&MASK; return (int) (rng->X>>17); @@ -132,13 +142,7 @@ void BLI_srand(unsigned int seed) { /* using hash table to create better seed */ void BLI_srandom(unsigned int seed) { - extern unsigned char hash[]; // noise.c - - rng_seed(&theBLI_rng, seed + hash[seed & 255]); - seed= rng_getInt(&theBLI_rng); - rng_seed(&theBLI_rng, seed + hash[seed & 255]); - seed= rng_getInt(&theBLI_rng); - rng_seed(&theBLI_rng, seed + hash[seed & 255]); + rng_srandom(&theBLI_rng, seed); } int BLI_rand(void) { |