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/****************************************************************************
* Copyright (C) 2014-2015 Intel Corporation. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* @file format_conversion.h
*
* @brief API implementation
*
******************************************************************************/
#include "format_types.h"
#include "format_traits.h"
//////////////////////////////////////////////////////////////////////////
/// @brief Load SIMD packed pixels in SOA format and converts to
/// SOA RGBA32_FLOAT format.
/// @param pSrc - source data in SOA form
/// @param dst - output data in SOA form
template <typename SIMD_T, SWR_FORMAT SrcFormat>
INLINE void SIMDCALL LoadSOA(const uint8_t* pSrc, Vec4<SIMD_T>& dst)
{
// fast path for float32
if ((FormatTraits<SrcFormat>::GetType(0) == SWR_TYPE_FLOAT) &&
(FormatTraits<SrcFormat>::GetBPC(0) == 32))
{
auto lambda = [&](int comp)
{
Float<SIMD_T> vComp =
SIMD_T::load_ps(reinterpret_cast<const float*>(pSrc + comp * sizeof(Float<SIMD_T>)));
dst.v[FormatTraits<SrcFormat>::swizzle(comp)] = vComp;
};
UnrollerL<0, FormatTraits<SrcFormat>::numComps, 1>::step(lambda);
return;
}
auto lambda = [&](int comp)
{
// load SIMD components
Float<SIMD_T> vComp;
FormatTraits<SrcFormat>::loadSOA(comp, pSrc, vComp);
// unpack
vComp = FormatTraits<SrcFormat>::unpack(comp, vComp);
// convert
if (FormatTraits<SrcFormat>::isNormalized(comp))
{
vComp = SIMD_T::cvtepi32_ps(SIMD_T::castps_si(vComp));
vComp = SIMD_T::mul_ps(vComp, SIMD_T::set1_ps(FormatTraits<SrcFormat>::toFloat(comp)));
}
dst.v[FormatTraits<SrcFormat>::swizzle(comp)] = vComp;
// is there a better way to get this from the SIMD traits?
const uint32_t SIMD_WIDTH = sizeof(typename SIMD_T::Float) / sizeof(float);
pSrc += (FormatTraits<SrcFormat>::GetBPC(comp) * SIMD_WIDTH) / 8;
};
UnrollerL<0, FormatTraits<SrcFormat>::numComps, 1>::step(lambda);
}
template <SWR_FORMAT SrcFormat>
INLINE void SIMDCALL LoadSOA(const uint8_t* pSrc, simdvector& dst)
{
LoadSOA<SIMD256, SrcFormat>(pSrc, dst);
}
template <SWR_FORMAT SrcFormat>
INLINE void SIMDCALL LoadSOA(const uint8_t* pSrc, simd16vector& dst)
{
LoadSOA<SIMD512, SrcFormat>(pSrc, dst);
}
//////////////////////////////////////////////////////////////////////////
/// @brief Clamps the given component based on the requirements on the
/// Format template arg
/// @param vComp - SIMD vector of floats
/// @param Component - component
template <typename SIMD_T, SWR_FORMAT Format>
INLINE Float<SIMD_T> SIMDCALL Clamp(Float<SIMD_T> const& v, uint32_t Component)
{
Float<SIMD_T> vComp = v;
if (Component >= 4 || Component < 0)
{
// Component shouldn't out of <0;3> range
assert(false);
return vComp;
}
if (FormatTraits<Format>::isNormalized(Component))
{
if (FormatTraits<Format>::GetType(Component) == SWR_TYPE_UNORM)
{
vComp = SIMD_T::max_ps(vComp, SIMD_T::setzero_ps());
}
if (FormatTraits<Format>::GetType(Component) == SWR_TYPE_SNORM)
{
vComp = SIMD_T::max_ps(vComp, SIMD_T::set1_ps(-1.0f));
}
vComp = SIMD_T::min_ps(vComp, SIMD_T::set1_ps(1.0f));
}
else if (FormatTraits<Format>::GetBPC(Component) < 32)
{
if (FormatTraits<Format>::GetType(Component) == SWR_TYPE_UINT)
{
int iMax = (1 << FormatTraits<Format>::GetBPC(Component)) - 1;
int iMin = 0;
Integer<SIMD_T> vCompi = SIMD_T::castps_si(vComp);
vCompi = SIMD_T::max_epu32(vCompi, SIMD_T::set1_epi32(iMin));
vCompi = SIMD_T::min_epu32(vCompi, SIMD_T::set1_epi32(iMax));
vComp = SIMD_T::castsi_ps(vCompi);
}
else if (FormatTraits<Format>::GetType(Component) == SWR_TYPE_SINT)
{
int iMax = (1 << (FormatTraits<Format>::GetBPC(Component) - 1)) - 1;
int iMin = -1 - iMax;
Integer<SIMD_T> vCompi = SIMD_T::castps_si(vComp);
vCompi = SIMD_T::max_epi32(vCompi, SIMD_T::set1_epi32(iMin));
vCompi = SIMD_T::min_epi32(vCompi, SIMD_T::set1_epi32(iMax));
vComp = SIMD_T::castsi_ps(vCompi);
}
}
return vComp;
}
template <SWR_FORMAT Format>
INLINE simdscalar SIMDCALL Clamp(simdscalar const& v, uint32_t Component)
{
return Clamp<SIMD256, Format>(v, Component);
}
template <SWR_FORMAT Format>
INLINE simd16scalar SIMDCALL Clamp(simd16scalar const& v, uint32_t Component)
{
return Clamp<SIMD512, Format>(v, Component);
}
//////////////////////////////////////////////////////////////////////////
/// @brief Normalize the given component based on the requirements on the
/// Format template arg
/// @param vComp - SIMD vector of floats
/// @param Component - component
template <typename SIMD_T, SWR_FORMAT Format>
INLINE Float<SIMD_T> SIMDCALL Normalize(Float<SIMD_T> const& vComp, uint32_t Component)
{
Float<SIMD_T> r = vComp;
if (FormatTraits<Format>::isNormalized(Component))
{
r = SIMD_T::mul_ps(r, SIMD_T::set1_ps(FormatTraits<Format>::fromFloat(Component)));
r = SIMD_T::castsi_ps(SIMD_T::cvtps_epi32(r));
}
return r;
}
template <SWR_FORMAT Format>
INLINE simdscalar SIMDCALL Normalize(simdscalar const& vComp, uint32_t Component)
{
return Normalize<SIMD256, Format>(vComp, Component);
}
template <SWR_FORMAT Format>
INLINE simd16scalar SIMDCALL Normalize(simd16scalar const& vComp, uint32_t Component)
{
return Normalize<SIMD512, Format>(vComp, Component);
}
//////////////////////////////////////////////////////////////////////////
/// @brief Convert and store simdvector of pixels in SOA
/// RGBA32_FLOAT to SOA format
/// @param src - source data in SOA form
/// @param dst - output data in SOA form
template <typename SIMD_T, SWR_FORMAT DstFormat>
INLINE void SIMDCALL StoreSOA(const Vec4<SIMD_T>& src, uint8_t* pDst)
{
// fast path for float32
if ((FormatTraits<DstFormat>::GetType(0) == SWR_TYPE_FLOAT) &&
(FormatTraits<DstFormat>::GetBPC(0) == 32))
{
for (uint32_t comp = 0; comp < FormatTraits<DstFormat>::numComps; ++comp)
{
Float<SIMD_T> vComp = src.v[FormatTraits<DstFormat>::swizzle(comp)];
// Gamma-correct
if (FormatTraits<DstFormat>::isSRGB)
{
if (comp < 3) // Input format is always RGBA32_FLOAT.
{
vComp = FormatTraits<R32G32B32A32_FLOAT>::convertSrgb(comp, vComp);
}
}
SIMD_T::store_ps(reinterpret_cast<float*>(pDst + comp * sizeof(simd16scalar)), vComp);
}
return;
}
auto lambda = [&](int comp) {
Float<SIMD_T> vComp = src.v[FormatTraits<DstFormat>::swizzle(comp)];
// Gamma-correct
if (FormatTraits<DstFormat>::isSRGB)
{
if (comp < 3) // Input format is always RGBA32_FLOAT.
{
vComp = FormatTraits<R32G32B32A32_FLOAT>::convertSrgb(comp, vComp);
}
}
// clamp
vComp = Clamp<SIMD_T, DstFormat>(vComp, comp);
// normalize
vComp = Normalize<SIMD_T, DstFormat>(vComp, comp);
// pack
vComp = FormatTraits<DstFormat>::pack(comp, vComp);
// store
FormatTraits<DstFormat>::storeSOA(comp, pDst, vComp);
// is there a better way to get this from the SIMD traits?
const uint32_t SIMD_WIDTH = sizeof(typename SIMD_T::Float) / sizeof(float);
pDst += (FormatTraits<DstFormat>::GetBPC(comp) * SIMD_WIDTH) / 8;
};
UnrollerL<0, FormatTraits<DstFormat>::numComps, 1>::step(lambda);
}
template <SWR_FORMAT DstFormat>
INLINE void SIMDCALL StoreSOA(const simdvector& src, uint8_t* pDst)
{
StoreSOA<SIMD256, DstFormat>(src, pDst);
}
template <SWR_FORMAT DstFormat>
INLINE void SIMDCALL StoreSOA(const simd16vector& src, uint8_t* pDst)
{
StoreSOA<SIMD512, DstFormat>(src, pDst);
}
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