tests/sksl/intrinsics/Pack.hlsl

cbuffer _UniformBuffer : register(b0, space0)
{
    float2 _10_a : packoffset(c0);
    float4 _10_b : packoffset(c1);
};


static float4 sk_FragColor;

struct SPIRV_Cross_Output
{
    float4 sk_FragColor : SV_Target0;
};

uint spvPackHalf2x16(float2 value)
{
    uint2 Packed = f32tof16(value);
    return Packed.x | (Packed.y << 16);
}

float2 spvUnpackHalf2x16(uint value)
{
    return f16tof32(uint2(value & 0xffff, value >> 16));
}

uint spvPackUnorm4x8(float4 value)
{
    uint4 Packed = uint4(round(saturate(value) * 255.0));
    return Packed.x | (Packed.y << 8) | (Packed.z << 16) | (Packed.w << 24);
}

float4 spvUnpackUnorm4x8(uint value)
{
    uint4 Packed = uint4(value & 0xff, (value >> 8) & 0xff, (value >> 16) & 0xff, value >> 24);
    return float4(Packed) / 255.0;
}

uint spvPackSnorm4x8(float4 value)
{
    int4 Packed = int4(round(clamp(value, -1.0, 1.0) * 127.0)) & 0xff;
    return uint(Packed.x | (Packed.y << 8) | (Packed.z << 16) | (Packed.w << 24));
}

float4 spvUnpackSnorm4x8(uint value)
{
    int SignedValue = int(value);
    int4 Packed = int4(SignedValue << 24, SignedValue << 16, SignedValue << 8, SignedValue) >> 24;
    return clamp(float4(Packed) / 127.0, -1.0, 1.0);
}

uint spvPackUnorm2x16(float2 value)
{
    uint2 Packed = uint2(round(saturate(value) * 65535.0));
    return Packed.x | (Packed.y << 16);
}

float2 spvUnpackUnorm2x16(uint value)
{
    uint2 Packed = uint2(value & 0xffff, value >> 16);
    return float2(Packed) / 65535.0;
}

uint spvPackSnorm2x16(float2 value)
{
    int2 Packed = int2(round(clamp(value, -1.0, 1.0) * 32767.0)) & 0xffff;
    return uint(Packed.x | (Packed.y << 16));
}

float2 spvUnpackSnorm2x16(uint value)
{
    int SignedValue = int(value);
    int2 Packed = int2(SignedValue << 16, SignedValue) >> 16;
    return clamp(float2(Packed) / 32767.0, -1.0, 1.0);
}

void frag_main()
{
    sk_FragColor.x = float(spvPackHalf2x16(_10_a));
    sk_FragColor.x = float(spvPackUnorm2x16(_10_a));
    sk_FragColor.x = float(spvPackSnorm2x16(_10_a));
    sk_FragColor.x = float(spvPackUnorm4x8(_10_b));
    sk_FragColor.x = float(spvPackSnorm4x8(_10_b));
}

SPIRV_Cross_Output main()
{
    frag_main();
    SPIRV_Cross_Output stage_output;
    stage_output.sk_FragColor = sk_FragColor;
    return stage_output;
}