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#ifndef QRGBA64_P_H
#define QRGBA64_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtGui/private/qtguiglobal_p.h>
#include <QtGui/qrgba64.h>
#include <QtGui/private/qdrawhelper_p.h>
#include <private/qsimd_p.h>
QT_BEGIN_NAMESPACE
inline QRgba64 combineAlpha256(QRgba64 rgba64, uint alpha256)
{
return QRgba64::fromRgba64(rgba64.red(), rgba64.green(), rgba64.blue(), (rgba64.alpha() * alpha256) >> 8);
}
inline QRgba64 multiplyAlpha256(QRgba64 rgba64, uint alpha256)
{
return QRgba64::fromRgba64((rgba64.red() * alpha256) >> 8,
(rgba64.green() * alpha256) >> 8,
(rgba64.blue() * alpha256) >> 8,
(rgba64.alpha() * alpha256) >> 8);
}
inline QRgba64 multiplyAlpha65535(QRgba64 rgba64, uint alpha65535)
{
return QRgba64::fromRgba64(qt_div_65535(rgba64.red() * alpha65535),
qt_div_65535(rgba64.green() * alpha65535),
qt_div_65535(rgba64.blue() * alpha65535),
qt_div_65535(rgba64.alpha() * alpha65535));
}
#ifdef __SSE2__
Q_ALWAYS_INLINE __m128i multiplyAlpha65535(__m128i rgba64, __m128i va)
{
__m128i vs = rgba64;
vs = _mm_unpacklo_epi16(_mm_mullo_epi16(vs, va), _mm_mulhi_epu16(vs, va));
vs = _mm_add_epi32(vs, _mm_srli_epi32(vs, 16));
vs = _mm_add_epi32(vs, _mm_set1_epi32(0x8000));
vs = _mm_srai_epi32(vs, 16);
vs = _mm_packs_epi32(vs, _mm_setzero_si128());
return vs;
}
Q_ALWAYS_INLINE __m128i multiplyAlpha65535(__m128i rgba64, uint alpha65535)
{
const __m128i va = _mm_shufflelo_epi16(_mm_cvtsi32_si128(alpha65535), _MM_SHUFFLE(0, 0, 0, 0));
return multiplyAlpha65535(rgba64, va);
}
#endif
#if defined(__ARM_NEON__)
Q_ALWAYS_INLINE uint16x4_t multiplyAlpha65535(uint16x4_t rgba64, uint16x4_t alpha65535)
{
uint32x4_t vs32 = vmull_u16(rgba64, alpha65535); // vs = vs * alpha
vs32 = vsraq_n_u32(vs32, vs32, 16); // vs = vs + (vs >> 16)
return vrshrn_n_u32(vs32, 16); // vs = (vs + 0x8000) >> 16
}
Q_ALWAYS_INLINE uint16x4_t multiplyAlpha65535(uint16x4_t rgba64, uint alpha65535)
{
uint32x4_t vs32 = vmull_n_u16(rgba64, alpha65535); // vs = vs * alpha
vs32 = vsraq_n_u32(vs32, vs32, 16); // vs = vs + (vs >> 16)
return vrshrn_n_u32(vs32, 16); // vs = (vs + 0x8000) >> 16
}
#endif
template<typename T>
inline T multiplyAlpha255(T rgba64, uint alpha255)
{
#if defined(__SSE2__) || defined(__ARM_NEON__)
return multiplyAlpha65535(rgba64, alpha255 * 257);
#else
return QRgba64::fromRgba64(qt_div_255(rgba64.red() * alpha255),
qt_div_255(rgba64.green() * alpha255),
qt_div_255(rgba64.blue() * alpha255),
qt_div_255(rgba64.alpha() * alpha255));
#endif
}
inline QRgba64 interpolate256(QRgba64 x, uint alpha1, QRgba64 y, uint alpha2)
{
return QRgba64::fromRgba64(multiplyAlpha256(x, alpha1) + multiplyAlpha256(y, alpha2));
}
inline QRgba64 interpolate255(QRgba64 x, uint alpha1, QRgba64 y, uint alpha2)
{
return QRgba64::fromRgba64(multiplyAlpha255(x, alpha1) + multiplyAlpha255(y, alpha2));
}
#if defined __SSE2__
Q_ALWAYS_INLINE __m128i interpolate255(__m128i x, uint alpha1, __m128i y, uint alpha2)
{
return _mm_add_epi32(multiplyAlpha255(x, alpha1), multiplyAlpha255(y, alpha2));
}
#endif
#if defined __ARM_NEON__
Q_ALWAYS_INLINE uint16x4_t interpolate255(uint16x4_t x, uint alpha1, uint16x4_t y, uint alpha2)
{
return vadd_u16(multiplyAlpha255(x, alpha1), multiplyAlpha255(y, alpha2));
}
#endif
inline QRgba64 interpolate65535(QRgba64 x, uint alpha1, QRgba64 y, uint alpha2)
{
return QRgba64::fromRgba64(multiplyAlpha65535(x, alpha1) + multiplyAlpha65535(y, alpha2));
}
#if defined __SSE2__
Q_ALWAYS_INLINE __m128i interpolate65535(__m128i x, uint alpha1, __m128i y, uint alpha2)
{
return _mm_add_epi32(multiplyAlpha65535(x, alpha1), multiplyAlpha65535(y, alpha2));
}
// alpha2 below is const-ref because otherwise MSVC2013 complains that it can't 16-byte align the argument.
Q_ALWAYS_INLINE __m128i interpolate65535(__m128i x, __m128i alpha1, __m128i y, const __m128i &alpha2)
{
return _mm_add_epi32(multiplyAlpha65535(x, alpha1), multiplyAlpha65535(y, alpha2));
}
#endif
#if defined __ARM_NEON__
Q_ALWAYS_INLINE uint16x4_t interpolate65535(uint16x4_t x, uint alpha1, uint16x4_t y, uint alpha2)
{
return vadd_u16(multiplyAlpha65535(x, alpha1), multiplyAlpha65535(y, alpha2));
}
Q_ALWAYS_INLINE uint16x4_t interpolate65535(uint16x4_t x, uint16x4_t alpha1, uint16x4_t y, uint16x4_t alpha2)
{
return vadd_u16(multiplyAlpha65535(x, alpha1), multiplyAlpha65535(y, alpha2));
}
#endif
inline QRgba64 addWithSaturation(QRgba64 a, QRgba64 b)
{
return QRgba64::fromRgba64(qMin(a.red() + b.red(), 65535),
qMin(a.green() + b.green(), 65535),
qMin(a.blue() + b.blue(), 65535),
qMin(a.alpha() + b.alpha(), 65535));
}
#if defined __SSE2__
Q_ALWAYS_INLINE uint toArgb32(__m128i v)
{
v = _mm_unpacklo_epi16(v, _mm_setzero_si128());
v = _mm_add_epi32(v, _mm_set1_epi32(128));
v = _mm_sub_epi32(v, _mm_srli_epi32(v, 8));
v = _mm_srli_epi32(v, 8);
v = _mm_packs_epi32(v, v);
v = _mm_packus_epi16(v, v);
return _mm_cvtsi128_si32(v);
}
#elif defined __ARM_NEON__
Q_ALWAYS_INLINE uint toArgb32(uint16x4_t v)
{
v = vsub_u16(v, vrshr_n_u16(v, 8));
v = vrshr_n_u16(v, 8);
uint8x8_t v8 = vmovn_u16(vcombine_u16(v, v));
return vget_lane_u32(vreinterpret_u32_u8(v8), 0);
}
#endif
inline uint toArgb32(QRgba64 rgba64)
{
#if defined __SSE2__
__m128i v = _mm_loadl_epi64((const __m128i *)&rgba64);
v = _mm_shufflelo_epi16(v, _MM_SHUFFLE(3, 0, 1, 2));
return toArgb32(v);
#elif defined __ARM_NEON__
uint16x4_t v = vreinterpret_u16_u64(vld1_u64(reinterpret_cast<const uint64_t *>(&rgba64)));
#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
const uint8x8_t shuffleMask = { 4, 5, 2, 3, 0, 1, 6, 7 };
v = vreinterpret_u16_u8(vtbl1_u8(vreinterpret_u8_u16(v), shuffleMask));
#else
v = vext_u16(v, v, 3);
#endif
return toArgb32(v);
#else
return rgba64.toArgb32();
#endif
}
inline uint toRgba8888(QRgba64 rgba64)
{
#if defined __SSE2__
__m128i v = _mm_loadl_epi64((const __m128i *)&rgba64);
return toArgb32(v);
#elif defined __ARM_NEON__
uint16x4_t v = vreinterpret_u16_u64(vld1_u64(reinterpret_cast<const uint64_t *>(&rgba64)));
return toArgb32(v);
#else
return ARGB2RGBA(toArgb32(rgba64));
#endif
}
#if defined(__SSE2__)
Q_ALWAYS_INLINE __m128i addWithSaturation(__m128i a, __m128i b)
{
return _mm_adds_epu16(a, b);
}
#endif
#if defined(__ARM_NEON__)
Q_ALWAYS_INLINE uint16x4_t addWithSaturation(uint16x4_t a, uint16x4_t b)
{
return vqmovn_u32(vaddl_u16(a, b));
}
#endif
inline QRgba64 rgbBlend(QRgba64 d, QRgba64 s, uint rgbAlpha)
{
QRgba64 blend;
#if defined(__SSE2__)
__m128i vd = _mm_loadl_epi64((const __m128i *)&d);
__m128i vs = _mm_loadl_epi64((const __m128i *)&s);
__m128i va = _mm_cvtsi32_si128(rgbAlpha);
va = _mm_unpacklo_epi8(va, va);
va = _mm_shufflelo_epi16(va, _MM_SHUFFLE(3, 0, 1, 2));
__m128i vb = _mm_xor_si128(_mm_set1_epi16(-1), va);
vs = _mm_unpacklo_epi16(_mm_mullo_epi16(vs, va), _mm_mulhi_epu16(vs, va));
vd = _mm_unpacklo_epi16(_mm_mullo_epi16(vd, vb), _mm_mulhi_epu16(vd, vb));
vd = _mm_add_epi32(vd, vs);
vd = _mm_add_epi32(vd, _mm_srli_epi32(vd, 16));
vd = _mm_add_epi32(vd, _mm_set1_epi32(0x8000));
vd = _mm_srai_epi32(vd, 16);
vd = _mm_packs_epi32(vd, _mm_setzero_si128());
_mm_storel_epi64((__m128i *)&blend, vd);
#elif defined(__ARM_NEON__)
uint16x4_t vd = vreinterpret_u16_u64(vmov_n_u64(d));
uint16x4_t vs = vreinterpret_u16_u64(vmov_n_u64(s));
uint8x8_t va8 = vreinterpret_u8_u32(vmov_n_u32(ARGB2RGBA(rgbAlpha)));
uint16x4_t va = vreinterpret_u16_u8(vzip_u8(va8, va8).val[0]);
uint16x4_t vb = vdup_n_u16(0xffff);
vb = vsub_u16(vb, va);
uint32x4_t vs32 = vmull_u16(vs, va);
uint32x4_t vd32 = vmull_u16(vd, vb);
vd32 = vaddq_u32(vd32, vs32);
vd32 = vsraq_n_u32(vd32, vd32, 16);
vd = vrshrn_n_u32(vd32, 16);
vst1_u64(reinterpret_cast<uint64_t *>(&blend), vreinterpret_u64_u16(vd));
#else
const int mr = qRed(rgbAlpha);
const int mg = qGreen(rgbAlpha);
const int mb = qBlue(rgbAlpha);
blend.setRed (qt_div_255(s.red() * mr + d.red() * (255 - mr)));
blend.setGreen(qt_div_255(s.green() * mg + d.green() * (255 - mg)));
blend.setBlue (qt_div_255(s.blue() * mb + d.blue() * (255 - mb)));
blend.setAlpha(s.alpha());
#endif
return blend;
}
QT_END_NAMESPACE
#endif // QRGBA64_P_H