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Use float<->half conversion routines from the OpenCL headers (#884)

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* Use float<->half conversion routines from the OpenCL headers

Fixes #870

Signed-off-by: Kevin Petit <kevin.petit@arm.com>

* Use cl_half_from_double

* Fix windows build errors

* Fix more build errors

* Code formatting

* Remove TEST class
This commit is contained in:
Kévin Petit
2020-08-14 13:50:14 +01:00
committed by GitHub
parent 655d83db80
commit ed50fcad2d
15 changed files with 64 additions and 941 deletions
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46
test_common/gles/helpers.cpp
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@@ -961,49 +961,6 @@ const char *GetGLFormatName( GLenum format )
}
}
cl_ushort float2half_rte( float f )
{
union{ float f; cl_uint u; } u = {f};
cl_uint sign = (u.u >> 16) & 0x8000;
float x = fabsf(f);
//Nan
if( x != x )
{
u.u >>= (24-11);
u.u &= 0x7fff;
u.u |= 0x0200; //silence the NaN
return u.u | sign;
}
// overflow
if( x >= MAKE_HEX_FLOAT(0x1.ffep15f, 0x1ffeL, 3) )
return 0x7c00 | sign;
// underflow
if( x <= MAKE_HEX_FLOAT(0x1.0p-25f, 0x1L, -25) )
return sign; // The halfway case can return 0x0001 or 0. 0 is even.
// very small
if( x < MAKE_HEX_FLOAT(0x1.8p-24f, 0x18L, -28) )
return sign | 1;
// half denormal
if( x < MAKE_HEX_FLOAT(0x1.0p-14f, 0x1L, -14) )
{
u.f = x * MAKE_HEX_FLOAT(0x1.0p-125f, 0x1L, -125);
return sign | u.u;
}
u.f *= MAKE_HEX_FLOAT(0x1.0p13f, 0x1L, 13);
u.u &= 0x7f800000;
x += u.f;
u.f = x - u.f;
u.f *= MAKE_HEX_FLOAT(0x1.0p-112f, 0x1L, -112);
return (u.u >> (24-11)) | sign;
}
void* CreateRandomData( ExplicitType type, size_t count, MTdata d )
{
switch(type)
@@ -1100,7 +1057,8 @@ void* CreateRandomData( ExplicitType type, size_t count, MTdata d )
for( size_t i = 0; i < count; i++ )
{
p[ i ] = float2half_rte(get_random_float( 0.f, 1.f, d ));
p[i] = cl_half_from_float(get_random_float(0.f, 1.f, d),
CL_HALF_RTE);
}
return (void*)p;