From f0596bf6605b6ad2de12c94c1af47b6fbac241a8 Mon Sep 17 00:00:00 2001
From: Sergey Sharybin <sergey.vfx@gmail.com>
Date: Fri, 16 Mar 2018 12:11:55 +0100
Subject: [PATCH] Hash: Add utility function to convert address to rgb values
Some magic hashing, will become handy to make debug messages
easier to follow.
---
source/blender/blenlib/BLI_hash.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
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__
--
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