Blender
V3.3
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#include <BKE_cryptomatte.hh>
Public Member Functions | |
CryptomatteHash (uint32_t hash) | |
CryptomatteHash (const char *name, int name_len) | |
std::string | hex_encoded () const |
float | float_encoded () const |
Static Public Member Functions | |
static CryptomatteHash | from_hex_encoded (blender::StringRef hex_encoded) |
Public Attributes | |
uint32_t | hash |
Definition at line 53 of file BKE_cryptomatte.hh.
blender::bke::cryptomatte::CryptomatteHash::CryptomatteHash | ( | uint32_t | hash | ) |
Definition at line 484 of file cryptomatte.cc.
blender::bke::cryptomatte::CryptomatteHash::CryptomatteHash | ( | const char * | name, |
int | name_len | ||
) |
Definition at line 488 of file cryptomatte.cc.
References BLI_hash_mm3(), and hash.
float blender::bke::cryptomatte::CryptomatteHash::float_encoded | ( | ) | const |
Convert a cryptomatte hash to a float.
Cryptomatte hashes are stored in float textures and images. The conversion is taken from the cryptomatte specification. See Floating point conversion section in https://github.com/Psyop/Cryptomatte/blob/master/specification/cryptomatte_specification.pdf.
The conversion uses as many 32 bit floating point values as possible to minimize hash collisions. Unfortunately not all 32 bits can be used as NaN and Inf can be problematic.
Note that this conversion assumes to be running on a L-endian system.
Definition at line 507 of file cryptomatte.cc.
References hash, MAX2, MIN2, and KDL::sign().
Referenced by BKE_cryptomatte_hash_to_float().
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static |
Definition at line 493 of file cryptomatte.cc.
References hex, hex_encoded(), and result.
Referenced by blender::bke::cryptomatte::manifest::from_manifest().
std::string blender::bke::cryptomatte::CryptomatteHash::hex_encoded | ( | ) | const |
Definition at line 500 of file cryptomatte.cc.
Referenced by from_hex_encoded().
uint32_t blender::bke::cryptomatte::CryptomatteHash::hash |
Definition at line 54 of file BKE_cryptomatte.hh.
Referenced by CryptomatteHash(), float_encoded(), and hex_encoded().