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fixed half_to_float

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This commit is contained in:
hyzboy 2022-03-21 21:29:14 +08:00
parent 6c2f5b255c
commit bfed461c84
1 changed files with 39 additions and 2 deletions
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41
inc/hgl/math/MathConst.h
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@ -77,9 +77,46 @@ namespace hgl
return double(floor(value*per))/per; return double(floor(value*per))/per;
} }
inline constexpr float half_to_float(const uint16 &h) inline const float half_to_float(const uint16 &h)
{ {
return ((h&0x8000)<<16) | (((h&0x7c00)+0x1C000)<<13) | ((h&0x03FF)<<13); union
{
float f;
uint32 u;
}x;
x.u=(((h&0x8000)<<16) | (((h&0x7c00)+0x1C000)<<13) | ((h&0x03FF)<<13));
return x.f;
}
inline void half_to_float(uint32 *target,const uint16 *source,uint32 count)
{
while (count--)
{
*target = (((*source & 0x8000) << 16) | (((*source & 0x7c00) + 0x1C000) << 13) | ((*source & 0x03FF) << 13));
++target;
++source;
}
}
inline void half_to_uint16(uint16 *target, const uint16 *source, uint32 count)
{
union
{
float f;
uint32 u;
}x;
while (count--)
{
x.u = (((*source & 0x8000) << 16) | (((*source & 0x7c00) + 0x1C000) << 13) | ((*source & 0x03FF) << 13));
*target=x.f*65535;
++target;
++source;
}
} }
inline constexpr uint16 float_to_half(const float &f) inline constexpr uint16 float_to_half(const float &f)