vkd3d/tests/hlsl/frexp.shader_test

[pixel shader todo(sm<4)]
uniform float4 f;

float4 main() : sv_target
{
    float exp;
    float mantissa = frexp(f.x, exp);
    return float4(exp, mantissa, 0.0, 0.0);
}

[test]
uniform 0 float4 3.1415927 0.0 0.0 0.0
todo(sm<4 | msl & sm>=6) draw quad
probe (0, 0) f32(2.0, 0.785398185, 0.0, 0.0)

uniform 0 float4 -3.1415927 0.0 0.0 0.0
todo(sm<4 | msl & sm>=6) draw quad
if(sm<4) probe (0, 0) f32(2.0, -0.785398185, 0.0, 0.0)
% Starting with shader model 4, negative inputs give positive mantissa.
if(sm>=4) probe (0, 0) f32(2.0, 0.785398185, 0.0, 0.0)

uniform 0 float4 7604.123 0.0 0.0 0.0
todo(sm<4 | msl & sm>=6) draw quad
probe (0, 0) f32(13.0, 0.92823765, 0.0, 0.0)

uniform 0 float4 0.00001234 0.0 0.0 0.0
todo(sm<4 | msl & sm>=6) draw quad
probe (0, 0) f32(-16.0, 0.8087142, 0.0, 0.0)

uniform 0 float4 0.0 0.0 0.0 0.0
todo(sm<4 | msl & sm>=6) draw quad
probe (0, 0) f32(0.0, 0.0, 0.0, 0.0)

uniform 0 float4 -0.0 0.0 0.0 0.0
todo(sm<4 | msl & sm>=6) draw quad
probe (0, 0) f32(0.0, 0.0, 0.0, 0.0)

uniform 0 float4 INF 0.0 0.0 0.0
todo(sm<4 | msl & sm>=6) draw quad
if(sm<4)  probe (0, 0) f32(-NAN, -NAN, 0, 0)
if(sm>=4) probe (0, 0) f32(129, 0.5, 0, 0)

uniform 0 float4 -INF 0.0 0.0 0.0
todo(sm<4 | msl & sm>=6) draw quad
if(sm<4)  probe (0, 0) f32(-NAN, -NAN, 0, 0)
if(sm>=4) probe (0, 0) f32(129, 0.5, 0, 0)

uniform 0 float4 NAN 0 0 0
todo(sm<4 | msl & sm>=6) draw quad
if(sm<4) probe (0, 0) f32(NAN, NAN, 0, 0)
if(sm>=4) probe (0, 0) f32(129, 0.75, 0, 0)

% Subnormals.
uniform 0 uint4 0x0007ffff 0 0 0
todo(sm<4 | msl & sm>=6) draw quad
probe (0, 0) f32(0, 0, 0, 0)

[pixel shader]
float4 main() : sv_target
{
    int arg = 7604;
    int exp;
    /* Integers are promoted to floats. */
    int mantissa = frexp(arg, exp);
    return float4(exp, mantissa, 0, 0);
}

[test]
draw quad
probe (0, 0) f32(13.0, 0.0, 0.0, 0.0)

[pixel shader]
float4 main() : sv_target
{
    bool arg = true;
    bool exp;
    /* Bools are promoted to floats. */
    bool mantissa = frexp(arg, exp);
    return float4(exp, mantissa, 0, 0);
}

[test]
draw quad
if(sm<4)  todo probe (0, 0) f32(0.0, 1.0, 0.0, 0.0)
if(sm>=4) probe (0, 0) f32(1.0, 1.0, 0.0, 0.0)

[pixel shader]
float4 main() : sv_target
{
    half arg = 3.141;
    half exp;
    /* Halfs are promoted to floats. */
    half mantissa = frexp(arg, exp);
    return float4(exp, mantissa, 0, 0);
}

[test]
draw quad
probe (0, 0) f32(2.0, 0.785250008, 0.0, 0.0)

[require]
shader model >= 5.0
float64

[pixel shader todo]
float4 main() : sv_target
{
    double arg = 3.14156265358979323;
    double exp;
    double mantissa = frexp(arg, exp);
    return float4(exp, mantissa, 0, 0);
}

[test]
todo(sm<6) draw quad
probe (0, 0) f32(2.0, 0.785390675, 0.0, 0.0)