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DirectXPackedVector.inl
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4503 lines (4036 loc) · 159 KB
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//-------------------------------------------------------------------------------------
// DirectXPackedVector.inl -- SIMD C++ Math library
//
// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
//
// https://go.microsoft.com/fwlink/?LinkID=615560
//-------------------------------------------------------------------------------------
#pragma once
/****************************************************************************
*
* Data conversion
*
****************************************************************************/
//------------------------------------------------------------------------------
inline float XMConvertHalfToFloat(HALF Value) noexcept
{
#if defined(_XM_F16C_INTRINSICS_) && !defined(_XM_NO_INTRINSICS_)
__m128i V1 = _mm_cvtsi32_si128(static_cast<int>(Value));
__m128 V2 = _mm_cvtph_ps(V1);
return _mm_cvtss_f32(V2);
#elif defined(_XM_ARM_NEON_INTRINSICS_) && (defined(_M_ARM64) || defined(_M_HYBRID_X86_ARM64) || defined(_M_ARM64EC) || __aarch64__) && !defined(_XM_NO_INTRINSICS_) && (!defined(__GNUC__) || (__ARM_FP & 2))
uint16x4_t vHalf = vdup_n_u16(Value);
float32x4_t vFloat = vcvt_f32_f16(vreinterpret_f16_u16(vHalf));
return vgetq_lane_f32(vFloat, 0);
#else
auto Mantissa = static_cast<uint32_t>(Value & 0x03FF);
uint32_t Exponent = (Value & 0x7C00);
if (Exponent == 0x7C00) // INF/NAN
{
Exponent = 0x8f;
}
else if (Exponent != 0) // The value is normalized
{
Exponent = static_cast<uint32_t>((static_cast<int>(Value) >> 10) & 0x1F);
}
else if (Mantissa != 0) // The value is denormalized
{
// Normalize the value in the resulting float
Exponent = 1;
do
{
Exponent--;
Mantissa <<= 1;
}
while ((Mantissa & 0x0400) == 0);
Mantissa &= 0x03FF;
}
else // The value is zero
{
Exponent = static_cast<uint32_t>(-112);
}
uint32_t Result =
((static_cast<uint32_t>(Value) & 0x8000) << 16) // Sign
| ((Exponent + 112) << 23) // Exponent
| (Mantissa << 13); // Mantissa
return reinterpret_cast<float*>(&Result)[0];
#endif // !_XM_F16C_INTRINSICS_
}
//------------------------------------------------------------------------------
#ifdef _PREFAST_
#pragma prefast(push)
#pragma prefast(disable : 26015 26019, "PREfast noise: Esp:1307" )
#endif
_Use_decl_annotations_
inline float* XMConvertHalfToFloatStream
(
float* pOutputStream,
size_t OutputStride,
const HALF* pInputStream,
size_t InputStride,
size_t HalfCount
) noexcept
{
assert(pOutputStream);
assert(pInputStream);
assert(InputStride >= sizeof(HALF));
_Analysis_assume_(InputStride >= sizeof(HALF));
assert(OutputStride >= sizeof(float));
_Analysis_assume_(OutputStride >= sizeof(float));
#if defined(_XM_F16C_INTRINSICS_) && !defined(_XM_NO_INTRINSICS_)
auto pHalf = reinterpret_cast<const uint8_t*>(pInputStream);
auto pFloat = reinterpret_cast<uint8_t*>(pOutputStream);
size_t i = 0;
size_t four = HalfCount >> 2;
if (four > 0)
{
if (InputStride == sizeof(HALF))
{
if (OutputStride == sizeof(float))
{
if ((reinterpret_cast<uintptr_t>(pFloat) & 0xF) == 0)
{
// Packed input, aligned & packed output
for (size_t j = 0; j < four; ++j)
{
__m128i HV = _mm_loadl_epi64(reinterpret_cast<const __m128i*>(pHalf));
pHalf += InputStride * 4;
__m128 FV = _mm_cvtph_ps(HV);
XM_STREAM_PS(reinterpret_cast<float*>(pFloat), FV);
pFloat += OutputStride * 4;
i += 4;
}
}
else
{
// Packed input, packed output
for (size_t j = 0; j < four; ++j)
{
__m128i HV = _mm_loadl_epi64(reinterpret_cast<const __m128i*>(pHalf));
pHalf += InputStride * 4;
__m128 FV = _mm_cvtph_ps(HV);
_mm_storeu_ps(reinterpret_cast<float*>(pFloat), FV);
pFloat += OutputStride * 4;
i += 4;
}
}
}
else
{
// Packed input, scattered output
for (size_t j = 0; j < four; ++j)
{
__m128i HV = _mm_loadl_epi64(reinterpret_cast<const __m128i*>(pHalf));
pHalf += InputStride * 4;
__m128 FV = _mm_cvtph_ps(HV);
_mm_store_ss(reinterpret_cast<float*>(pFloat), FV);
pFloat += OutputStride;
*reinterpret_cast<int*>(pFloat) = _mm_extract_ps(FV, 1);
pFloat += OutputStride;
*reinterpret_cast<int*>(pFloat) = _mm_extract_ps(FV, 2);
pFloat += OutputStride;
*reinterpret_cast<int*>(pFloat) = _mm_extract_ps(FV, 3);
pFloat += OutputStride;
i += 4;
}
}
}
else if (OutputStride == sizeof(float))
{
if ((reinterpret_cast<uintptr_t>(pFloat) & 0xF) == 0)
{
// Scattered input, aligned & packed output
for (size_t j = 0; j < four; ++j)
{
uint16_t H1 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H2 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H3 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H4 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
__m128i HV = _mm_setzero_si128();
HV = _mm_insert_epi16(HV, H1, 0);
HV = _mm_insert_epi16(HV, H2, 1);
HV = _mm_insert_epi16(HV, H3, 2);
HV = _mm_insert_epi16(HV, H4, 3);
__m128 FV = _mm_cvtph_ps(HV);
XM_STREAM_PS(reinterpret_cast<float*>(pFloat), FV);
pFloat += OutputStride * 4;
i += 4;
}
}
else
{
// Scattered input, packed output
for (size_t j = 0; j < four; ++j)
{
uint16_t H1 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H2 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H3 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H4 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
__m128i HV = _mm_setzero_si128();
HV = _mm_insert_epi16(HV, H1, 0);
HV = _mm_insert_epi16(HV, H2, 1);
HV = _mm_insert_epi16(HV, H3, 2);
HV = _mm_insert_epi16(HV, H4, 3);
__m128 FV = _mm_cvtph_ps(HV);
_mm_storeu_ps(reinterpret_cast<float*>(pFloat), FV);
pFloat += OutputStride * 4;
i += 4;
}
}
}
else
{
// Scattered input, scattered output
for (size_t j = 0; j < four; ++j)
{
uint16_t H1 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H2 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H3 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H4 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
__m128i HV = _mm_setzero_si128();
HV = _mm_insert_epi16(HV, H1, 0);
HV = _mm_insert_epi16(HV, H2, 1);
HV = _mm_insert_epi16(HV, H3, 2);
HV = _mm_insert_epi16(HV, H4, 3);
__m128 FV = _mm_cvtph_ps(HV);
_mm_store_ss(reinterpret_cast<float*>(pFloat), FV);
pFloat += OutputStride;
*reinterpret_cast<int*>(pFloat) = _mm_extract_ps(FV, 1);
pFloat += OutputStride;
*reinterpret_cast<int*>(pFloat) = _mm_extract_ps(FV, 2);
pFloat += OutputStride;
*reinterpret_cast<int*>(pFloat) = _mm_extract_ps(FV, 3);
pFloat += OutputStride;
i += 4;
}
}
}
for (; i < HalfCount; ++i)
{
*reinterpret_cast<float*>(pFloat) = XMConvertHalfToFloat(reinterpret_cast<const HALF*>(pHalf)[0]);
pHalf += InputStride;
pFloat += OutputStride;
}
XM_SFENCE();
return pOutputStream;
#elif defined(_XM_ARM_NEON_INTRINSICS_) && (defined(_M_ARM64) || defined(_M_HYBRID_X86_ARM64) || defined(_M_ARM64EC) ||__aarch64__) && !defined(_XM_NO_INTRINSICS_) && (!defined(__GNUC__) || (__ARM_FP & 2))
auto pHalf = reinterpret_cast<const uint8_t*>(pInputStream);
auto pFloat = reinterpret_cast<uint8_t*>(pOutputStream);
size_t i = 0;
size_t four = HalfCount >> 2;
if (four > 0)
{
if (InputStride == sizeof(HALF))
{
if (OutputStride == sizeof(float))
{
// Packed input, packed output
for (size_t j = 0; j < four; ++j)
{
uint16x4_t vHalf = vld1_u16(reinterpret_cast<const uint16_t*>(pHalf));
pHalf += InputStride * 4;
float32x4_t vFloat = vcvt_f32_f16(vreinterpret_f16_u16(vHalf));
vst1q_f32(reinterpret_cast<float*>(pFloat), vFloat);
pFloat += OutputStride * 4;
i += 4;
}
}
else
{
// Packed input, scattered output
for (size_t j = 0; j < four; ++j)
{
uint16x4_t vHalf = vld1_u16(reinterpret_cast<const uint16_t*>(pHalf));
pHalf += InputStride * 4;
float32x4_t vFloat = vcvt_f32_f16(vreinterpret_f16_u16(vHalf));
vst1q_lane_f32(reinterpret_cast<float*>(pFloat), vFloat, 0);
pFloat += OutputStride;
vst1q_lane_f32(reinterpret_cast<float*>(pFloat), vFloat, 1);
pFloat += OutputStride;
vst1q_lane_f32(reinterpret_cast<float*>(pFloat), vFloat, 2);
pFloat += OutputStride;
vst1q_lane_f32(reinterpret_cast<float*>(pFloat), vFloat, 3);
pFloat += OutputStride;
i += 4;
}
}
}
else if (OutputStride == sizeof(float))
{
// Scattered input, packed output
for (size_t j = 0; j < four; ++j)
{
uint16_t H1 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H2 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H3 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H4 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint64_t iHalf = uint64_t(H1) | (uint64_t(H2) << 16) | (uint64_t(H3) << 32) | (uint64_t(H4) << 48);
uint16x4_t vHalf = vcreate_u16(iHalf);
float32x4_t vFloat = vcvt_f32_f16(vreinterpret_f16_u16(vHalf));
vst1q_f32(reinterpret_cast<float*>(pFloat), vFloat);
pFloat += OutputStride * 4;
i += 4;
}
}
else
{
// Scattered input, scattered output
for (size_t j = 0; j < four; ++j)
{
uint16_t H1 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H2 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H3 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint16_t H4 = *reinterpret_cast<const HALF*>(pHalf);
pHalf += InputStride;
uint64_t iHalf = uint64_t(H1) | (uint64_t(H2) << 16) | (uint64_t(H3) << 32) | (uint64_t(H4) << 48);
uint16x4_t vHalf = vcreate_u16(iHalf);
float32x4_t vFloat = vcvt_f32_f16(vreinterpret_f16_u16(vHalf));
vst1q_lane_f32(reinterpret_cast<float*>(pFloat), vFloat, 0);
pFloat += OutputStride;
vst1q_lane_f32(reinterpret_cast<float*>(pFloat), vFloat, 1);
pFloat += OutputStride;
vst1q_lane_f32(reinterpret_cast<float*>(pFloat), vFloat, 2);
pFloat += OutputStride;
vst1q_lane_f32(reinterpret_cast<float*>(pFloat), vFloat, 3);
pFloat += OutputStride;
i += 4;
}
}
}
for (; i < HalfCount; ++i)
{
*reinterpret_cast<float*>(pFloat) = XMConvertHalfToFloat(reinterpret_cast<const HALF*>(pHalf)[0]);
pHalf += InputStride;
pFloat += OutputStride;
}
return pOutputStream;
#else
auto pHalf = reinterpret_cast<const uint8_t*>(pInputStream);
auto pFloat = reinterpret_cast<uint8_t*>(pOutputStream);
for (size_t i = 0; i < HalfCount; i++)
{
*reinterpret_cast<float*>(pFloat) = XMConvertHalfToFloat(reinterpret_cast<const HALF*>(pHalf)[0]);
pHalf += InputStride;
pFloat += OutputStride;
}
return pOutputStream;
#endif // !_XM_F16C_INTRINSICS_
}
//------------------------------------------------------------------------------
inline HALF XMConvertFloatToHalf(float Value) noexcept
{
#if defined(_XM_F16C_INTRINSICS_) && !defined(_XM_NO_INTRINSICS_)
__m128 V1 = _mm_set_ss(Value);
__m128i V2 = _mm_cvtps_ph(V1, _MM_FROUND_TO_NEAREST_INT);
return static_cast<HALF>(_mm_extract_epi16(V2, 0));
#elif defined(_XM_ARM_NEON_INTRINSICS_) && (defined(_M_ARM64) || defined(_M_HYBRID_X86_ARM64) || defined(_M_ARM64EC) || __aarch64__) && !defined(_XM_NO_INTRINSICS_) && (!defined(__GNUC__) || (__ARM_FP & 2))
float32x4_t vFloat = vdupq_n_f32(Value);
float16x4_t vHalf = vcvt_f16_f32(vFloat);
return vget_lane_u16(vreinterpret_u16_f16(vHalf), 0);
#else
uint32_t Result;
auto IValue = reinterpret_cast<uint32_t*>(&Value)[0];
uint32_t Sign = (IValue & 0x80000000U) >> 16U;
IValue = IValue & 0x7FFFFFFFU; // Hack off the sign
if (IValue >= 0x47800000 /*e+16*/)
{
// The number is too large to be represented as a half. Return infinity or NaN
Result = 0x7C00U | ((IValue > 0x7F800000) ? (0x200 | ((IValue >> 13U) & 0x3FFU)) : 0U);
}
else if (IValue <= 0x33000000U /*e-25*/)
{
Result = 0;
}
else if (IValue < 0x38800000U /*e-14*/)
{
// The number is too small to be represented as a normalized half.
// Convert it to a denormalized value.
uint32_t Shift = 125U - (IValue >> 23U);
IValue = 0x800000U | (IValue & 0x7FFFFFU);
Result = IValue >> (Shift + 1);
uint32_t s = (IValue & ((1U << Shift) - 1)) != 0;
Result += (Result | s) & ((IValue >> Shift) & 1U);
}
else
{
// Rebias the exponent to represent the value as a normalized half.
IValue += 0xC8000000U;
Result = ((IValue + 0x0FFFU + ((IValue >> 13U) & 1U)) >> 13U) & 0x7FFFU;
}
return static_cast<HALF>(Result | Sign);
#endif // !_XM_F16C_INTRINSICS_
}
//------------------------------------------------------------------------------
_Use_decl_annotations_
inline HALF* XMConvertFloatToHalfStream
(
HALF* pOutputStream,
size_t OutputStride,
const float* pInputStream,
size_t InputStride,
size_t FloatCount
) noexcept
{
assert(pOutputStream);
assert(pInputStream);
assert(InputStride >= sizeof(float));
_Analysis_assume_(InputStride >= sizeof(float));
assert(OutputStride >= sizeof(HALF));
_Analysis_assume_(OutputStride >= sizeof(HALF));
#if defined(_XM_F16C_INTRINSICS_) && !defined(_XM_NO_INTRINSICS_)
auto pFloat = reinterpret_cast<const uint8_t*>(pInputStream);
auto pHalf = reinterpret_cast<uint8_t*>(pOutputStream);
size_t i = 0;
size_t four = FloatCount >> 2;
if (four > 0)
{
if (InputStride == sizeof(float))
{
if (OutputStride == sizeof(HALF))
{
if ((reinterpret_cast<uintptr_t>(pFloat) & 0xF) == 0)
{
// Aligned and packed input, packed output
for (size_t j = 0; j < four; ++j)
{
__m128 FV = _mm_load_ps(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride * 4;
__m128i HV = _mm_cvtps_ph(FV, _MM_FROUND_TO_NEAREST_INT);
_mm_storel_epi64(reinterpret_cast<__m128i*>(pHalf), HV);
pHalf += OutputStride * 4;
i += 4;
}
}
else
{
// Packed input, packed output
for (size_t j = 0; j < four; ++j)
{
__m128 FV = _mm_loadu_ps(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride * 4;
__m128i HV = _mm_cvtps_ph(FV, _MM_FROUND_TO_NEAREST_INT);
_mm_storel_epi64(reinterpret_cast<__m128i*>(pHalf), HV);
pHalf += OutputStride * 4;
i += 4;
}
}
}
else
{
if ((reinterpret_cast<uintptr_t>(pFloat) & 0xF) == 0)
{
// Aligned & packed input, scattered output
for (size_t j = 0; j < four; ++j)
{
__m128 FV = _mm_load_ps(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride * 4;
__m128i HV = _mm_cvtps_ph(FV, _MM_FROUND_TO_NEAREST_INT);
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 0));
pHalf += OutputStride;
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 1));
pHalf += OutputStride;
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 2));
pHalf += OutputStride;
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 3));
pHalf += OutputStride;
i += 4;
}
}
else
{
// Packed input, scattered output
for (size_t j = 0; j < four; ++j)
{
__m128 FV = _mm_loadu_ps(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride * 4;
__m128i HV = _mm_cvtps_ph(FV, _MM_FROUND_TO_NEAREST_INT);
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 0));
pHalf += OutputStride;
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 1));
pHalf += OutputStride;
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 2));
pHalf += OutputStride;
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 3));
pHalf += OutputStride;
i += 4;
}
}
}
}
else if (OutputStride == sizeof(HALF))
{
// Scattered input, packed output
for (size_t j = 0; j < four; ++j)
{
__m128 FV1 = _mm_load_ss(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride;
__m128 FV2 = _mm_broadcast_ss(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride;
__m128 FV3 = _mm_broadcast_ss(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride;
__m128 FV4 = _mm_broadcast_ss(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride;
__m128 FV = _mm_blend_ps(FV1, FV2, 0x2);
__m128 FT = _mm_blend_ps(FV3, FV4, 0x8);
FV = _mm_blend_ps(FV, FT, 0xC);
__m128i HV = _mm_cvtps_ph(FV, _MM_FROUND_TO_NEAREST_INT);
_mm_storel_epi64(reinterpret_cast<__m128i*>(pHalf), HV);
pHalf += OutputStride * 4;
i += 4;
}
}
else
{
// Scattered input, scattered output
for (size_t j = 0; j < four; ++j)
{
__m128 FV1 = _mm_load_ss(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride;
__m128 FV2 = _mm_broadcast_ss(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride;
__m128 FV3 = _mm_broadcast_ss(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride;
__m128 FV4 = _mm_broadcast_ss(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride;
__m128 FV = _mm_blend_ps(FV1, FV2, 0x2);
__m128 FT = _mm_blend_ps(FV3, FV4, 0x8);
FV = _mm_blend_ps(FV, FT, 0xC);
__m128i HV = _mm_cvtps_ph(FV, _MM_FROUND_TO_NEAREST_INT);
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 0));
pHalf += OutputStride;
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 1));
pHalf += OutputStride;
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 2));
pHalf += OutputStride;
*reinterpret_cast<HALF*>(pHalf) = static_cast<HALF>(_mm_extract_epi16(HV, 3));
pHalf += OutputStride;
i += 4;
}
}
}
for (; i < FloatCount; ++i)
{
*reinterpret_cast<HALF*>(pHalf) = XMConvertFloatToHalf(reinterpret_cast<const float*>(pFloat)[0]);
pFloat += InputStride;
pHalf += OutputStride;
}
return pOutputStream;
#elif defined(_XM_ARM_NEON_INTRINSICS_) && (defined(_M_ARM64) || defined(_M_HYBRID_X86_ARM64) || defined(_M_ARM64EC) || __aarch64__) && !defined(_XM_NO_INTRINSICS_) && (!defined(__GNUC__) || (__ARM_FP & 2))
auto pFloat = reinterpret_cast<const uint8_t*>(pInputStream);
auto pHalf = reinterpret_cast<uint8_t*>(pOutputStream);
size_t i = 0;
size_t four = FloatCount >> 2;
if (four > 0)
{
if (InputStride == sizeof(float))
{
if (OutputStride == sizeof(HALF))
{
// Packed input, packed output
for (size_t j = 0; j < four; ++j)
{
float32x4_t vFloat = vld1q_f32(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride * 4;
uint16x4_t vHalf = vreinterpret_u16_f16(vcvt_f16_f32(vFloat));
vst1_u16(reinterpret_cast<uint16_t*>(pHalf), vHalf);
pHalf += OutputStride * 4;
i += 4;
}
}
else
{
// Packed input, scattered output
for (size_t j = 0; j < four; ++j)
{
float32x4_t vFloat = vld1q_f32(reinterpret_cast<const float*>(pFloat));
pFloat += InputStride * 4;
uint16x4_t vHalf = vreinterpret_u16_f16(vcvt_f16_f32(vFloat));
vst1_lane_u16(reinterpret_cast<uint16_t*>(pHalf), vHalf, 0);
pHalf += OutputStride;
vst1_lane_u16(reinterpret_cast<uint16_t*>(pHalf), vHalf, 1);
pHalf += OutputStride;
vst1_lane_u16(reinterpret_cast<uint16_t*>(pHalf), vHalf, 2);
pHalf += OutputStride;
vst1_lane_u16(reinterpret_cast<uint16_t*>(pHalf), vHalf, 3);
pHalf += OutputStride;
i += 4;
}
}
}
else if (OutputStride == sizeof(HALF))
{
// Scattered input, packed output
for (size_t j = 0; j < four; ++j)
{
float32x4_t vFloat = vdupq_n_f32(0);
vFloat = vld1q_lane_f32(reinterpret_cast<const float*>(pFloat), vFloat, 0);
pFloat += InputStride;
vFloat = vld1q_lane_f32(reinterpret_cast<const float*>(pFloat), vFloat, 1);
pFloat += InputStride;
vFloat = vld1q_lane_f32(reinterpret_cast<const float*>(pFloat), vFloat, 2);
pFloat += InputStride;
vFloat = vld1q_lane_f32(reinterpret_cast<const float*>(pFloat), vFloat, 3);
pFloat += InputStride;
uint16x4_t vHalf = vreinterpret_u16_f16(vcvt_f16_f32(vFloat));
vst1_u16(reinterpret_cast<uint16_t*>(pHalf), vHalf);
pHalf += OutputStride * 4;
i += 4;
}
}
else
{
// Scattered input, scattered output
for (size_t j = 0; j < four; ++j)
{
float32x4_t vFloat = vdupq_n_f32(0);
vFloat = vld1q_lane_f32(reinterpret_cast<const float*>(pFloat), vFloat, 0);
pFloat += InputStride;
vFloat = vld1q_lane_f32(reinterpret_cast<const float*>(pFloat), vFloat, 1);
pFloat += InputStride;
vFloat = vld1q_lane_f32(reinterpret_cast<const float*>(pFloat), vFloat, 2);
pFloat += InputStride;
vFloat = vld1q_lane_f32(reinterpret_cast<const float*>(pFloat), vFloat, 3);
pFloat += InputStride;
uint16x4_t vHalf = vreinterpret_u16_f16(vcvt_f16_f32(vFloat));
vst1_lane_u16(reinterpret_cast<uint16_t*>(pHalf), vHalf, 0);
pHalf += OutputStride;
vst1_lane_u16(reinterpret_cast<uint16_t*>(pHalf), vHalf, 1);
pHalf += OutputStride;
vst1_lane_u16(reinterpret_cast<uint16_t*>(pHalf), vHalf, 2);
pHalf += OutputStride;
vst1_lane_u16(reinterpret_cast<uint16_t*>(pHalf), vHalf, 3);
pHalf += OutputStride;
i += 4;
}
}
}
for (; i < FloatCount; ++i)
{
*reinterpret_cast<HALF*>(pHalf) = XMConvertFloatToHalf(reinterpret_cast<const float*>(pFloat)[0]);
pFloat += InputStride;
pHalf += OutputStride;
}
return pOutputStream;
#else
auto pFloat = reinterpret_cast<const uint8_t*>(pInputStream);
auto pHalf = reinterpret_cast<uint8_t*>(pOutputStream);
for (size_t i = 0; i < FloatCount; i++)
{
*reinterpret_cast<HALF*>(pHalf) = XMConvertFloatToHalf(reinterpret_cast<const float*>(pFloat)[0]);
pFloat += InputStride;
pHalf += OutputStride;
}
return pOutputStream;
#endif // !_XM_F16C_INTRINSICS_
}
#ifdef _PREFAST_
#pragma prefast(pop)
#endif
/****************************************************************************
*
* Vector and matrix load operations
*
****************************************************************************/
#ifdef _PREFAST_
#pragma prefast(push)
#pragma prefast(disable:28931, "PREfast noise: Esp:1266")
#endif
_Use_decl_annotations_
inline XMVECTOR XM_CALLCONV XMLoadColor(const XMCOLOR* pSource) noexcept
{
assert(pSource);
#if defined(_XM_NO_INTRINSICS_)
// int32_t -> Float conversions are done in one instruction.
// uint32_t -> Float calls a runtime function. Keep in int32_t
auto iColor = static_cast<int32_t>(pSource->c);
XMVECTORF32 vColor = { { {
static_cast<float>((iColor >> 16) & 0xFF)* (1.0f / 255.0f),
static_cast<float>((iColor >> 8) & 0xFF)* (1.0f / 255.0f),
static_cast<float>(iColor & 0xFF)* (1.0f / 255.0f),
static_cast<float>((iColor >> 24) & 0xFF)* (1.0f / 255.0f)
} } };
return vColor.v;
#elif defined(_XM_ARM_NEON_INTRINSICS_)
uint32_t bgra = pSource->c;
uint32_t rgba = (bgra & 0xFF00FF00) | ((bgra >> 16) & 0xFF) | ((bgra << 16) & 0xFF0000);
uint32x2_t vInt8 = vdup_n_u32(rgba);
uint16x8_t vInt16 = vmovl_u8(vreinterpret_u8_u32(vInt8));
uint32x4_t vInt = vmovl_u16(vget_low_u16(vInt16));
float32x4_t R = vcvtq_f32_u32(vInt);
return vmulq_n_f32(R, 1.0f / 255.0f);
#elif defined(_XM_SSE_INTRINSICS_)
// Splat the color in all four entries
__m128i vInt = _mm_set1_epi32(static_cast<int>(pSource->c));
// Shift R&0xFF0000, G&0xFF00, B&0xFF, A&0xFF000000
vInt = _mm_and_si128(vInt, g_XMMaskA8R8G8B8);
// a is unsigned! Flip the bit to convert the order to signed
vInt = _mm_xor_si128(vInt, g_XMFlipA8R8G8B8);
// Convert to floating point numbers
XMVECTOR vTemp = _mm_cvtepi32_ps(vInt);
// RGB + 0, A + 0x80000000.f to undo the signed order.
vTemp = _mm_add_ps(vTemp, g_XMFixAA8R8G8B8);
// Convert 0-255 to 0.0f-1.0f
return _mm_mul_ps(vTemp, g_XMNormalizeA8R8G8B8);
#endif
}
//------------------------------------------------------------------------------
_Use_decl_annotations_
inline XMVECTOR XM_CALLCONV XMLoadHalf2(const XMHALF2* pSource) noexcept
{
assert(pSource);
#if defined(_XM_F16C_INTRINSICS_) && !defined(_XM_NO_INTRINSICS_)
__m128 V = _mm_load_ss(reinterpret_cast<const float*>(pSource));
return _mm_cvtph_ps(_mm_castps_si128(V));
#else
XMVECTORF32 vResult = { { {
XMConvertHalfToFloat(pSource->x),
XMConvertHalfToFloat(pSource->y),
0.0f,
0.0f
} } };
return vResult.v;
#endif // !_XM_F16C_INTRINSICS_
}
//------------------------------------------------------------------------------
_Use_decl_annotations_
inline XMVECTOR XM_CALLCONV XMLoadShortN2(const XMSHORTN2* pSource) noexcept
{
assert(pSource);
#if defined(_XM_NO_INTRINSICS_)
XMVECTORF32 vResult = { { {
(pSource->x == -32768) ? -1.f : (static_cast<float>(pSource->x)* (1.0f / 32767.0f)),
(pSource->y == -32768) ? -1.f : (static_cast<float>(pSource->y)* (1.0f / 32767.0f)),
0.0f,
0.0f
} } };
return vResult.v;
#elif defined(_XM_ARM_NEON_INTRINSICS_)
uint32x2_t vInt16 = vld1_dup_u32(reinterpret_cast<const uint32_t*>(pSource));
int32x4_t vInt = vmovl_s16(vreinterpret_s16_u32(vInt16));
vInt = vandq_s32(vInt, g_XMMaskXY);
float32x4_t R = vcvtq_f32_s32(vInt);
R = vmulq_n_f32(R, 1.0f / 32767.0f);
return vmaxq_f32(R, vdupq_n_f32(-1.f));
#elif defined(_XM_SSE_INTRINSICS_)
// Splat the two shorts in all four entries (WORD alignment okay,
// DWORD alignment preferred)
__m128 vTemp = _mm_load_ps1(reinterpret_cast<const float*>(&pSource->x));
// Mask x&0xFFFF, y&0xFFFF0000,z&0,w&0
vTemp = _mm_and_ps(vTemp, g_XMMaskX16Y16);
// x needs to be sign extended
vTemp = _mm_xor_ps(vTemp, g_XMFlipX16Y16);
// Convert to floating point numbers
vTemp = _mm_cvtepi32_ps(_mm_castps_si128(vTemp));
// x - 0x8000 to undo the signed order.
vTemp = _mm_add_ps(vTemp, g_XMFixX16Y16);
// Convert -1.0f - 1.0f
vTemp = _mm_mul_ps(vTemp, g_XMNormalizeX16Y16);
// Clamp result (for case of -32768)
return _mm_max_ps(vTemp, g_XMNegativeOne);
#endif
}
//------------------------------------------------------------------------------
_Use_decl_annotations_
inline XMVECTOR XM_CALLCONV XMLoadShort2(const XMSHORT2* pSource) noexcept
{
assert(pSource);
#if defined(_XM_NO_INTRINSICS_)
XMVECTORF32 vResult = { { {
static_cast<float>(pSource->x),
static_cast<float>(pSource->y),
0.f,
0.f
} } };
return vResult.v;
#elif defined(_XM_ARM_NEON_INTRINSICS_)
uint32x2_t vInt16 = vld1_dup_u32(reinterpret_cast<const uint32_t*>(pSource));
int32x4_t vInt = vmovl_s16(vreinterpret_s16_u32(vInt16));
vInt = vandq_s32(vInt, g_XMMaskXY);
return vcvtq_f32_s32(vInt);
#elif defined(_XM_SSE_INTRINSICS_)
// Splat the two shorts in all four entries (WORD alignment okay,
// DWORD alignment preferred)
__m128 vTemp = _mm_load_ps1(reinterpret_cast<const float*>(&pSource->x));
// Mask x&0xFFFF, y&0xFFFF0000,z&0,w&0
vTemp = _mm_and_ps(vTemp, g_XMMaskX16Y16);
// x needs to be sign extended
vTemp = _mm_xor_ps(vTemp, g_XMFlipX16Y16);
// Convert to floating point numbers
vTemp = _mm_cvtepi32_ps(_mm_castps_si128(vTemp));
// x - 0x8000 to undo the signed order.
vTemp = _mm_add_ps(vTemp, g_XMFixX16Y16);
// Y is 65536 too large
return _mm_mul_ps(vTemp, g_XMFixupY16);
#endif
}
//------------------------------------------------------------------------------
_Use_decl_annotations_
inline XMVECTOR XM_CALLCONV XMLoadUShortN2(const XMUSHORTN2* pSource) noexcept
{
assert(pSource);
#if defined(_XM_NO_INTRINSICS_)
XMVECTORF32 vResult = { { {
static_cast<float>(pSource->x) / 65535.0f,
static_cast<float>(pSource->y) / 65535.0f,
0.f,
0.f
} } };
return vResult.v;
#elif defined(_XM_ARM_NEON_INTRINSICS_)
uint32x2_t vInt16 = vld1_dup_u32(reinterpret_cast<const uint32_t*>(pSource));
uint32x4_t vInt = vmovl_u16(vreinterpret_u16_u32(vInt16));
vInt = vandq_u32(vInt, g_XMMaskXY);
float32x4_t R = vcvtq_f32_u32(vInt);
R = vmulq_n_f32(R, 1.0f / 65535.0f);
return vmaxq_f32(R, vdupq_n_f32(-1.f));
#elif defined(_XM_SSE_INTRINSICS_)
static const XMVECTORF32 FixupY16 = { { { 1.0f / 65535.0f, 1.0f / (65535.0f * 65536.0f), 0.0f, 0.0f } } };
static const XMVECTORF32 FixaddY16 = { { { 0, 32768.0f * 65536.0f, 0, 0 } } };
// Splat the two shorts in all four entries (WORD alignment okay,
// DWORD alignment preferred)
__m128 vTemp = _mm_load_ps1(reinterpret_cast<const float*>(&pSource->x));
// Mask x&0xFFFF, y&0xFFFF0000,z&0,w&0
vTemp = _mm_and_ps(vTemp, g_XMMaskX16Y16);
// y needs to be sign flipped
vTemp = _mm_xor_ps(vTemp, g_XMFlipY);
// Convert to floating point numbers
vTemp = _mm_cvtepi32_ps(_mm_castps_si128(vTemp));
// y + 0x8000 to undo the signed order.
vTemp = _mm_add_ps(vTemp, FixaddY16);
// Y is 65536 times too large
vTemp = _mm_mul_ps(vTemp, FixupY16);
return vTemp;
#endif
}
//------------------------------------------------------------------------------
_Use_decl_annotations_
inline XMVECTOR XM_CALLCONV XMLoadUShort2(const XMUSHORT2* pSource) noexcept
{
assert(pSource);
#if defined(_XM_NO_INTRINSICS_)
XMVECTORF32 vResult = { { {
static_cast<float>(pSource->x),
static_cast<float>(pSource->y),
0.f,
0.f
} } };
return vResult.v;
#elif defined(_XM_ARM_NEON_INTRINSICS_)
uint32x2_t vInt16 = vld1_dup_u32(reinterpret_cast<const uint32_t*>(pSource));
uint32x4_t vInt = vmovl_u16(vreinterpret_u16_u32(vInt16));
vInt = vandq_u32(vInt, g_XMMaskXY);
return vcvtq_f32_u32(vInt);
#elif defined(_XM_SSE_INTRINSICS_)
static const XMVECTORF32 FixaddY16 = { { { 0, 32768.0f, 0, 0 } } };
// Splat the two shorts in all four entries (WORD alignment okay,
// DWORD alignment preferred)
__m128 vTemp = _mm_load_ps1(reinterpret_cast<const float*>(&pSource->x));
// Mask x&0xFFFF, y&0xFFFF0000,z&0,w&0
vTemp = _mm_and_ps(vTemp, g_XMMaskX16Y16);
// y needs to be sign flipped
vTemp = _mm_xor_ps(vTemp, g_XMFlipY);
// Convert to floating point numbers
vTemp = _mm_cvtepi32_ps(_mm_castps_si128(vTemp));
// Y is 65536 times too large
vTemp = _mm_mul_ps(vTemp, g_XMFixupY16);
// y + 0x8000 to undo the signed order.
vTemp = _mm_add_ps(vTemp, FixaddY16);
return vTemp;
#endif
}
//------------------------------------------------------------------------------
_Use_decl_annotations_
inline XMVECTOR XM_CALLCONV XMLoadByteN2(const XMBYTEN2* pSource) noexcept
{
assert(pSource);
#if defined(_XM_NO_INTRINSICS_)
XMVECTORF32 vResult = { { {
(pSource->x == -128) ? -1.f : (static_cast<float>(pSource->x)* (1.0f / 127.0f)),
(pSource->y == -128) ? -1.f : (static_cast<float>(pSource->y)* (1.0f / 127.0f)),
0.0f,
0.0f
} } };
return vResult.v;
#elif defined(_XM_ARM_NEON_INTRINSICS_)
uint16x4_t vInt8 = vld1_dup_u16(reinterpret_cast<const uint16_t*>(pSource));
int16x8_t vInt16 = vmovl_s8(vreinterpret_s8_u16(vInt8));
int32x4_t vInt = vmovl_s16(vget_low_s16(vInt16));
vInt = vandq_s32(vInt, g_XMMaskXY);
float32x4_t R = vcvtq_f32_s32(vInt);
R = vmulq_n_f32(R, 1.0f / 127.0f);
return vmaxq_f32(R, vdupq_n_f32(-1.f));
#elif defined(_XM_SSE_INTRINSICS_)
static const XMVECTORF32 Scale = { { { 1.0f / 127.0f, 1.0f / (127.0f * 256.0f), 0, 0 } } };
static const XMVECTORU32 Mask = { { { 0xFF, 0xFF00, 0, 0 } } };
// Splat the color in all four entries (x,z,y,w)
__m128i vInt = XM_LOADU_SI16(&pSource->v);
XMVECTOR vTemp = XM_PERMUTE_PS(_mm_castsi128_ps(vInt), _MM_SHUFFLE(0, 0, 0, 0));
// Mask
vTemp = _mm_and_ps(vTemp, Mask);
// x,y and z are unsigned! Flip the bits to convert the order to signed
vTemp = _mm_xor_ps(vTemp, g_XMXorByte4);
// Convert to floating point numbers
vTemp = _mm_cvtepi32_ps(_mm_castps_si128(vTemp));
// x, y and z - 0x80 to complete the conversion
vTemp = _mm_add_ps(vTemp, g_XMAddByte4);
// Fix y, z and w because they are too large
vTemp = _mm_mul_ps(vTemp, Scale);