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skia2/include/private/SkNx_sse.h
Mike Klein 7dfe6d9ea7 minor Sk4px cleanup 
I've removed a bunch of unused code,
inlined routines that are only used once,
removed platform code where a portable code works fine,
and renamed methods and updated comments.

I'm thinking about getting rid of Sk4px entirely, and boiling it down
instead to a couple helper methods on Sk16b/Sk16h.  This is a start.

Change-Id: I35b6c44710aa2cefe8c1e07fc2cb877a4042e8a5
Reviewed-on: https://skia-review.googlesource.com/c/178985
Auto-Submit: Mike Klein <mtklein@google.com>
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Herb Derby <herb@google.com>
2018-12-18 20:46:25 +00:00

821 lines
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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkNx_sse_DEFINED
#define SkNx_sse_DEFINED
#include "SkTypes.h"
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
#include <smmintrin.h>
#elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
#include <tmmintrin.h>
#else
#include <emmintrin.h>
#endif
// This file may assume <= SSE2, but must check SK_CPU_SSE_LEVEL for anything more recent.
// If you do, make sure this is in a static inline function... anywhere else risks violating ODR.
namespace { // NOLINT(google-build-namespaces)
// Emulate _mm_floor_ps() with SSE2:
// - roundtrip through integers via truncation
// - subtract 1 if that's too big (possible for negative values).
// This restricts the domain of our inputs to a maximum somehwere around 2^31.
// Seems plenty big.
AI static __m128 emulate_mm_floor_ps(__m128 v) {
__m128 roundtrip = _mm_cvtepi32_ps(_mm_cvttps_epi32(v));
__m128 too_big = _mm_cmpgt_ps(roundtrip, v);
return _mm_sub_ps(roundtrip, _mm_and_ps(too_big, _mm_set1_ps(1.0f)));
}
template <>
class SkNx<2, float> {
public:
AI SkNx(const __m128& vec) : fVec(vec) {}
AI SkNx() {}
AI SkNx(float val) : fVec(_mm_set1_ps(val)) {}
AI static SkNx Load(const void* ptr) {
return _mm_castsi128_ps(_mm_loadl_epi64((const __m128i*)ptr));
}
AI SkNx(float a, float b) : fVec(_mm_setr_ps(a,b,0,0)) {}
AI void store(void* ptr) const { _mm_storel_pi((__m64*)ptr, fVec); }
AI static void Load2(const void* ptr, SkNx* x, SkNx* y) {
const float* m = (const float*)ptr;
*x = SkNx{m[0], m[2]};
*y = SkNx{m[1], m[3]};
}
AI static void Store2(void* dst, const SkNx& a, const SkNx& b) {
auto vals = _mm_unpacklo_ps(a.fVec, b.fVec);
_mm_storeu_ps((float*)dst, vals);
}
AI static void Store3(void* dst, const SkNx& a, const SkNx& b, const SkNx& c) {
auto lo = _mm_setr_ps(a[0], b[0], c[0], a[1]),
hi = _mm_setr_ps(b[1], c[1], 0, 0);
_mm_storeu_ps((float*)dst, lo);
_mm_storel_pi(((__m64*)dst) + 2, hi);
}
AI static void Store4(void* dst, const SkNx& a, const SkNx& b, const SkNx& c, const SkNx& d) {
auto lo = _mm_setr_ps(a[0], b[0], c[0], d[0]),
hi = _mm_setr_ps(a[1], b[1], c[1], d[1]);
_mm_storeu_ps((float*)dst, lo);
_mm_storeu_ps(((float*)dst) + 4, hi);
}
AI SkNx operator - () const { return _mm_xor_ps(_mm_set1_ps(-0.0f), fVec); }
AI SkNx operator + (const SkNx& o) const { return _mm_add_ps(fVec, o.fVec); }
AI SkNx operator - (const SkNx& o) const { return _mm_sub_ps(fVec, o.fVec); }
AI SkNx operator * (const SkNx& o) const { return _mm_mul_ps(fVec, o.fVec); }
AI SkNx operator / (const SkNx& o) const { return _mm_div_ps(fVec, o.fVec); }
AI SkNx operator == (const SkNx& o) const { return _mm_cmpeq_ps (fVec, o.fVec); }
AI SkNx operator != (const SkNx& o) const { return _mm_cmpneq_ps(fVec, o.fVec); }
AI SkNx operator < (const SkNx& o) const { return _mm_cmplt_ps (fVec, o.fVec); }
AI SkNx operator > (const SkNx& o) const { return _mm_cmpgt_ps (fVec, o.fVec); }
AI SkNx operator <= (const SkNx& o) const { return _mm_cmple_ps (fVec, o.fVec); }
AI SkNx operator >= (const SkNx& o) const { return _mm_cmpge_ps (fVec, o.fVec); }
AI static SkNx Min(const SkNx& l, const SkNx& r) { return _mm_min_ps(l.fVec, r.fVec); }
AI static SkNx Max(const SkNx& l, const SkNx& r) { return _mm_max_ps(l.fVec, r.fVec); }
AI SkNx abs() const { return _mm_andnot_ps(_mm_set1_ps(-0.0f), fVec); }
AI SkNx floor() const {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
return _mm_floor_ps(fVec);
#else
return emulate_mm_floor_ps(fVec);
#endif
}
AI SkNx sqrt() const { return _mm_sqrt_ps (fVec); }
AI SkNx rsqrt() const { return _mm_rsqrt_ps(fVec); }
AI SkNx invert() const { return _mm_rcp_ps(fVec); }
AI float operator[](int k) const {
SkASSERT(0 <= k && k < 2);
union { __m128 v; float fs[4]; } pun = {fVec};
return pun.fs[k&1];
}
AI bool allTrue() const { return 0xff == (_mm_movemask_epi8(_mm_castps_si128(fVec)) & 0xff); }
AI bool anyTrue() const { return 0x00 != (_mm_movemask_epi8(_mm_castps_si128(fVec)) & 0xff); }
AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
return _mm_blendv_ps(e.fVec, t.fVec, fVec);
#else
return _mm_or_ps(_mm_and_ps (fVec, t.fVec),
_mm_andnot_ps(fVec, e.fVec));
#endif
}
__m128 fVec;
};
template <>
class SkNx<4, float> {
public:
AI SkNx(const __m128& vec) : fVec(vec) {}
AI SkNx() {}
AI SkNx(float val) : fVec( _mm_set1_ps(val) ) {}
AI SkNx(float a, float b, float c, float d) : fVec(_mm_setr_ps(a,b,c,d)) {}
AI static SkNx Load(const void* ptr) { return _mm_loadu_ps((const float*)ptr); }
AI void store(void* ptr) const { _mm_storeu_ps((float*)ptr, fVec); }
AI static void Load2(const void* ptr, SkNx* x, SkNx* y) {
SkNx lo = SkNx::Load((const float*)ptr+0),
hi = SkNx::Load((const float*)ptr+4);
*x = SkNx{lo[0], lo[2], hi[0], hi[2]};
*y = SkNx{lo[1], lo[3], hi[1], hi[3]};
}
AI static void Load4(const void* ptr, SkNx* r, SkNx* g, SkNx* b, SkNx* a) {
__m128 v0 = _mm_loadu_ps(((float*)ptr) + 0),
v1 = _mm_loadu_ps(((float*)ptr) + 4),
v2 = _mm_loadu_ps(((float*)ptr) + 8),
v3 = _mm_loadu_ps(((float*)ptr) + 12);
_MM_TRANSPOSE4_PS(v0, v1, v2, v3);
*r = v0;
*g = v1;
*b = v2;
*a = v3;
}
AI static void Store4(void* dst, const SkNx& r, const SkNx& g, const SkNx& b, const SkNx& a) {
__m128 v0 = r.fVec,
v1 = g.fVec,
v2 = b.fVec,
v3 = a.fVec;
_MM_TRANSPOSE4_PS(v0, v1, v2, v3);
_mm_storeu_ps(((float*) dst) + 0, v0);
_mm_storeu_ps(((float*) dst) + 4, v1);
_mm_storeu_ps(((float*) dst) + 8, v2);
_mm_storeu_ps(((float*) dst) + 12, v3);
}
AI SkNx operator - () const { return _mm_xor_ps(_mm_set1_ps(-0.0f), fVec); }
AI SkNx operator + (const SkNx& o) const { return _mm_add_ps(fVec, o.fVec); }
AI SkNx operator - (const SkNx& o) const { return _mm_sub_ps(fVec, o.fVec); }
AI SkNx operator * (const SkNx& o) const { return _mm_mul_ps(fVec, o.fVec); }
AI SkNx operator / (const SkNx& o) const { return _mm_div_ps(fVec, o.fVec); }
AI SkNx operator == (const SkNx& o) const { return _mm_cmpeq_ps (fVec, o.fVec); }
AI SkNx operator != (const SkNx& o) const { return _mm_cmpneq_ps(fVec, o.fVec); }
AI SkNx operator < (const SkNx& o) const { return _mm_cmplt_ps (fVec, o.fVec); }
AI SkNx operator > (const SkNx& o) const { return _mm_cmpgt_ps (fVec, o.fVec); }
AI SkNx operator <= (const SkNx& o) const { return _mm_cmple_ps (fVec, o.fVec); }
AI SkNx operator >= (const SkNx& o) const { return _mm_cmpge_ps (fVec, o.fVec); }
AI static SkNx Min(const SkNx& l, const SkNx& r) { return _mm_min_ps(l.fVec, r.fVec); }
AI static SkNx Max(const SkNx& l, const SkNx& r) { return _mm_max_ps(l.fVec, r.fVec); }
AI SkNx abs() const { return _mm_andnot_ps(_mm_set1_ps(-0.0f), fVec); }
AI SkNx floor() const {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
return _mm_floor_ps(fVec);
#else
return emulate_mm_floor_ps(fVec);
#endif
}
AI SkNx sqrt() const { return _mm_sqrt_ps (fVec); }
AI SkNx rsqrt() const { return _mm_rsqrt_ps(fVec); }
AI SkNx invert() const { return _mm_rcp_ps(fVec); }
AI float operator[](int k) const {
SkASSERT(0 <= k && k < 4);
union { __m128 v; float fs[4]; } pun = {fVec};
return pun.fs[k&3];
}
AI float min() const {
SkNx min = Min(*this, _mm_shuffle_ps(fVec, fVec, _MM_SHUFFLE(2,3,0,1)));
min = Min(min, _mm_shuffle_ps(min.fVec, min.fVec, _MM_SHUFFLE(0,1,2,3)));
return min[0];
}
AI float max() const {
SkNx max = Max(*this, _mm_shuffle_ps(fVec, fVec, _MM_SHUFFLE(2,3,0,1)));
max = Max(max, _mm_shuffle_ps(max.fVec, max.fVec, _MM_SHUFFLE(0,1,2,3)));
return max[0];
}
AI bool allTrue() const { return 0xffff == _mm_movemask_epi8(_mm_castps_si128(fVec)); }
AI bool anyTrue() const { return 0x0000 != _mm_movemask_epi8(_mm_castps_si128(fVec)); }
AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
return _mm_blendv_ps(e.fVec, t.fVec, fVec);
#else
return _mm_or_ps(_mm_and_ps (fVec, t.fVec),
_mm_andnot_ps(fVec, e.fVec));
#endif
}
__m128 fVec;
};
AI static __m128i mullo32(__m128i a, __m128i b) {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
return _mm_mullo_epi32(a, b);
#else
__m128i mul20 = _mm_mul_epu32(a, b),
mul31 = _mm_mul_epu32(_mm_srli_si128(a, 4), _mm_srli_si128(b, 4));
return _mm_unpacklo_epi32(_mm_shuffle_epi32(mul20, _MM_SHUFFLE(0,0,2,0)),
_mm_shuffle_epi32(mul31, _MM_SHUFFLE(0,0,2,0)));
#endif
}
template <>
class SkNx<4, int32_t> {
public:
AI SkNx(const __m128i& vec) : fVec(vec) {}
AI SkNx() {}
AI SkNx(int32_t val) : fVec(_mm_set1_epi32(val)) {}
AI static SkNx Load(const void* ptr) { return _mm_loadu_si128((const __m128i*)ptr); }
AI SkNx(int32_t a, int32_t b, int32_t c, int32_t d) : fVec(_mm_setr_epi32(a,b,c,d)) {}
AI void store(void* ptr) const { _mm_storeu_si128((__m128i*)ptr, fVec); }
AI SkNx operator + (const SkNx& o) const { return _mm_add_epi32(fVec, o.fVec); }
AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi32(fVec, o.fVec); }
AI SkNx operator * (const SkNx& o) const { return mullo32(fVec, o.fVec); }
AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
AI SkNx operator | (const SkNx& o) const { return _mm_or_si128(fVec, o.fVec); }
AI SkNx operator ^ (const SkNx& o) const { return _mm_xor_si128(fVec, o.fVec); }
AI SkNx operator << (int bits) const { return _mm_slli_epi32(fVec, bits); }
AI SkNx operator >> (int bits) const { return _mm_srai_epi32(fVec, bits); }
AI SkNx operator == (const SkNx& o) const { return _mm_cmpeq_epi32 (fVec, o.fVec); }
AI SkNx operator < (const SkNx& o) const { return _mm_cmplt_epi32 (fVec, o.fVec); }
AI SkNx operator > (const SkNx& o) const { return _mm_cmpgt_epi32 (fVec, o.fVec); }
AI int32_t operator[](int k) const {
SkASSERT(0 <= k && k < 4);
union { __m128i v; int32_t is[4]; } pun = {fVec};
return pun.is[k&3];
}
AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
return _mm_blendv_epi8(e.fVec, t.fVec, fVec);
#else
return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
_mm_andnot_si128(fVec, e.fVec));
#endif
}
AI SkNx abs() const {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
return _mm_abs_epi32(fVec);
#else
SkNx mask = (*this) >> 31;
return (mask ^ (*this)) - mask;
#endif
}
AI static SkNx Min(const SkNx& x, const SkNx& y) {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
return _mm_min_epi32(x.fVec, y.fVec);
#else
return (x < y).thenElse(x, y);
#endif
}
AI static SkNx Max(const SkNx& x, const SkNx& y) {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
return _mm_max_epi32(x.fVec, y.fVec);
#else
return (x > y).thenElse(x, y);
#endif
}
__m128i fVec;
};
template <>
class SkNx<2, uint32_t> {
public:
AI SkNx(const __m128i& vec) : fVec(vec) {}
AI SkNx() {}
AI SkNx(uint32_t val) : fVec(_mm_set1_epi32(val)) {}
AI static SkNx Load(const void* ptr) { return _mm_loadl_epi64((const __m128i*)ptr); }
AI SkNx(uint32_t a, uint32_t b) : fVec(_mm_setr_epi32(a,b,0,0)) {}
AI void store(void* ptr) const { _mm_storel_epi64((__m128i*)ptr, fVec); }
AI SkNx operator + (const SkNx& o) const { return _mm_add_epi32(fVec, o.fVec); }
AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi32(fVec, o.fVec); }
AI SkNx operator * (const SkNx& o) const { return mullo32(fVec, o.fVec); }
AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
AI SkNx operator | (const SkNx& o) const { return _mm_or_si128(fVec, o.fVec); }
AI SkNx operator ^ (const SkNx& o) const { return _mm_xor_si128(fVec, o.fVec); }
AI SkNx operator << (int bits) const { return _mm_slli_epi32(fVec, bits); }
AI SkNx operator >> (int bits) const { return _mm_srli_epi32(fVec, bits); }
AI SkNx operator == (const SkNx& o) const { return _mm_cmpeq_epi32 (fVec, o.fVec); }
AI SkNx operator != (const SkNx& o) const { return (*this == o) ^ 0xffffffff; }
// operator < and > take a little extra fiddling to make work for unsigned ints.
AI uint32_t operator[](int k) const {
SkASSERT(0 <= k && k < 2);
union { __m128i v; uint32_t us[4]; } pun = {fVec};
return pun.us[k&1];
}
AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
return _mm_blendv_epi8(e.fVec, t.fVec, fVec);
#else
return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
_mm_andnot_si128(fVec, e.fVec));
#endif
}
AI bool allTrue() const { return 0xff == (_mm_movemask_epi8(fVec) & 0xff); }
__m128i fVec;
};
template <>
class SkNx<4, uint32_t> {
public:
AI SkNx(const __m128i& vec) : fVec(vec) {}
AI SkNx() {}
AI SkNx(uint32_t val) : fVec(_mm_set1_epi32(val)) {}
AI static SkNx Load(const void* ptr) { return _mm_loadu_si128((const __m128i*)ptr); }
AI SkNx(uint32_t a, uint32_t b, uint32_t c, uint32_t d) : fVec(_mm_setr_epi32(a,b,c,d)) {}
AI void store(void* ptr) const { _mm_storeu_si128((__m128i*)ptr, fVec); }
AI SkNx operator + (const SkNx& o) const { return _mm_add_epi32(fVec, o.fVec); }
AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi32(fVec, o.fVec); }
AI SkNx operator * (const SkNx& o) const { return mullo32(fVec, o.fVec); }
AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
AI SkNx operator | (const SkNx& o) const { return _mm_or_si128(fVec, o.fVec); }
AI SkNx operator ^ (const SkNx& o) const { return _mm_xor_si128(fVec, o.fVec); }
AI SkNx operator << (int bits) const { return _mm_slli_epi32(fVec, bits); }
AI SkNx operator >> (int bits) const { return _mm_srli_epi32(fVec, bits); }
AI SkNx operator == (const SkNx& o) const { return _mm_cmpeq_epi32 (fVec, o.fVec); }
AI SkNx operator != (const SkNx& o) const { return (*this == o) ^ 0xffffffff; }
// operator < and > take a little extra fiddling to make work for unsigned ints.
AI uint32_t operator[](int k) const {
SkASSERT(0 <= k && k < 4);
union { __m128i v; uint32_t us[4]; } pun = {fVec};
return pun.us[k&3];
}
AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
return _mm_blendv_epi8(e.fVec, t.fVec, fVec);
#else
return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
_mm_andnot_si128(fVec, e.fVec));
#endif
}
AI SkNx mulHi(SkNx m) const {
SkNx v20{_mm_mul_epu32(m.fVec, fVec)};
SkNx v31{_mm_mul_epu32(_mm_srli_si128(m.fVec, 4), _mm_srli_si128(fVec, 4))};
return SkNx{v20[1], v31[1], v20[3], v31[3]};
}
__m128i fVec;
};
template <>
class SkNx<4, uint16_t> {
public:
AI SkNx(const __m128i& vec) : fVec(vec) {}
AI SkNx() {}
AI SkNx(uint16_t val) : fVec(_mm_set1_epi16(val)) {}
AI SkNx(uint16_t a, uint16_t b, uint16_t c, uint16_t d)
: fVec(_mm_setr_epi16(a,b,c,d,0,0,0,0)) {}
AI static SkNx Load(const void* ptr) { return _mm_loadl_epi64((const __m128i*)ptr); }
AI void store(void* ptr) const { _mm_storel_epi64((__m128i*)ptr, fVec); }
AI static void Load4(const void* ptr, SkNx* r, SkNx* g, SkNx* b, SkNx* a) {
__m128i lo = _mm_loadu_si128(((__m128i*)ptr) + 0),
hi = _mm_loadu_si128(((__m128i*)ptr) + 1);
__m128i even = _mm_unpacklo_epi16(lo, hi), // r0 r2 g0 g2 b0 b2 a0 a2
odd = _mm_unpackhi_epi16(lo, hi); // r1 r3 ...
__m128i rg = _mm_unpacklo_epi16(even, odd), // r0 r1 r2 r3 g0 g1 g2 g3
ba = _mm_unpackhi_epi16(even, odd); // b0 b1 ... a0 a1 ...
*r = rg;
*g = _mm_srli_si128(rg, 8);
*b = ba;
*a = _mm_srli_si128(ba, 8);
}
AI static void Load3(const void* ptr, SkNx* r, SkNx* g, SkNx* b) {
// The idea here is to get 4 vectors that are R G B _ _ _ _ _.
// The second load is at a funny location to make sure we don't read past
// the bounds of memory. This is fine, we just need to shift it a little bit.
const uint8_t* ptr8 = (const uint8_t*) ptr;
__m128i rgb0 = _mm_loadu_si128((const __m128i*) (ptr8 + 0));
__m128i rgb1 = _mm_srli_si128(rgb0, 3*2);
__m128i rgb2 = _mm_srli_si128(_mm_loadu_si128((const __m128i*) (ptr8 + 4*2)), 2*2);
__m128i rgb3 = _mm_srli_si128(rgb2, 3*2);
__m128i rrggbb01 = _mm_unpacklo_epi16(rgb0, rgb1);
__m128i rrggbb23 = _mm_unpacklo_epi16(rgb2, rgb3);
*r = _mm_unpacklo_epi32(rrggbb01, rrggbb23);
*g = _mm_srli_si128(r->fVec, 4*2);
*b = _mm_unpackhi_epi32(rrggbb01, rrggbb23);
}
AI static void Store4(void* dst, const SkNx& r, const SkNx& g, const SkNx& b, const SkNx& a) {
__m128i rg = _mm_unpacklo_epi16(r.fVec, g.fVec);
__m128i ba = _mm_unpacklo_epi16(b.fVec, a.fVec);
__m128i lo = _mm_unpacklo_epi32(rg, ba);
__m128i hi = _mm_unpackhi_epi32(rg, ba);
_mm_storeu_si128(((__m128i*) dst) + 0, lo);
_mm_storeu_si128(((__m128i*) dst) + 1, hi);
}
AI SkNx operator + (const SkNx& o) const { return _mm_add_epi16(fVec, o.fVec); }
AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi16(fVec, o.fVec); }
AI SkNx operator * (const SkNx& o) const { return _mm_mullo_epi16(fVec, o.fVec); }
AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
AI SkNx operator | (const SkNx& o) const { return _mm_or_si128(fVec, o.fVec); }
AI SkNx operator << (int bits) const { return _mm_slli_epi16(fVec, bits); }
AI SkNx operator >> (int bits) const { return _mm_srli_epi16(fVec, bits); }
AI uint16_t operator[](int k) const {
SkASSERT(0 <= k && k < 4);
union { __m128i v; uint16_t us[8]; } pun = {fVec};
return pun.us[k&3];
}
__m128i fVec;
};
template <>
class SkNx<8, uint16_t> {
public:
AI SkNx(const __m128i& vec) : fVec(vec) {}
AI SkNx() {}
AI SkNx(uint16_t val) : fVec(_mm_set1_epi16(val)) {}
AI SkNx(uint16_t a, uint16_t b, uint16_t c, uint16_t d,
uint16_t e, uint16_t f, uint16_t g, uint16_t h)
: fVec(_mm_setr_epi16(a,b,c,d,e,f,g,h)) {}
AI static SkNx Load(const void* ptr) { return _mm_loadu_si128((const __m128i*)ptr); }
AI void store(void* ptr) const { _mm_storeu_si128((__m128i*)ptr, fVec); }
AI static void Load4(const void* ptr, SkNx* r, SkNx* g, SkNx* b, SkNx* a) {
__m128i _01 = _mm_loadu_si128(((__m128i*)ptr) + 0),
_23 = _mm_loadu_si128(((__m128i*)ptr) + 1),
_45 = _mm_loadu_si128(((__m128i*)ptr) + 2),
_67 = _mm_loadu_si128(((__m128i*)ptr) + 3);
__m128i _02 = _mm_unpacklo_epi16(_01, _23), // r0 r2 g0 g2 b0 b2 a0 a2
_13 = _mm_unpackhi_epi16(_01, _23), // r1 r3 g1 g3 b1 b3 a1 a3
_46 = _mm_unpacklo_epi16(_45, _67),
_57 = _mm_unpackhi_epi16(_45, _67);
__m128i rg0123 = _mm_unpacklo_epi16(_02, _13), // r0 r1 r2 r3 g0 g1 g2 g3
ba0123 = _mm_unpackhi_epi16(_02, _13), // b0 b1 b2 b3 a0 a1 a2 a3
rg4567 = _mm_unpacklo_epi16(_46, _57),
ba4567 = _mm_unpackhi_epi16(_46, _57);
*r = _mm_unpacklo_epi64(rg0123, rg4567);
*g = _mm_unpackhi_epi64(rg0123, rg4567);
*b = _mm_unpacklo_epi64(ba0123, ba4567);
*a = _mm_unpackhi_epi64(ba0123, ba4567);
}
AI static void Load3(const void* ptr, SkNx* r, SkNx* g, SkNx* b) {
const uint8_t* ptr8 = (const uint8_t*) ptr;
__m128i rgb0 = _mm_loadu_si128((const __m128i*) (ptr8 + 0*2));
__m128i rgb1 = _mm_srli_si128(rgb0, 3*2);
__m128i rgb2 = _mm_loadu_si128((const __m128i*) (ptr8 + 6*2));
__m128i rgb3 = _mm_srli_si128(rgb2, 3*2);
__m128i rgb4 = _mm_loadu_si128((const __m128i*) (ptr8 + 12*2));
__m128i rgb5 = _mm_srli_si128(rgb4, 3*2);
__m128i rgb6 = _mm_srli_si128(_mm_loadu_si128((const __m128i*) (ptr8 + 16*2)), 2*2);
__m128i rgb7 = _mm_srli_si128(rgb6, 3*2);
__m128i rgb01 = _mm_unpacklo_epi16(rgb0, rgb1);
__m128i rgb23 = _mm_unpacklo_epi16(rgb2, rgb3);
__m128i rgb45 = _mm_unpacklo_epi16(rgb4, rgb5);
__m128i rgb67 = _mm_unpacklo_epi16(rgb6, rgb7);
__m128i rg03 = _mm_unpacklo_epi32(rgb01, rgb23);
__m128i bx03 = _mm_unpackhi_epi32(rgb01, rgb23);
__m128i rg47 = _mm_unpacklo_epi32(rgb45, rgb67);
__m128i bx47 = _mm_unpackhi_epi32(rgb45, rgb67);
*r = _mm_unpacklo_epi64(rg03, rg47);
*g = _mm_unpackhi_epi64(rg03, rg47);
*b = _mm_unpacklo_epi64(bx03, bx47);
}
AI static void Store4(void* ptr, const SkNx& r, const SkNx& g, const SkNx& b, const SkNx& a) {
__m128i rg0123 = _mm_unpacklo_epi16(r.fVec, g.fVec), // r0 g0 r1 g1 r2 g2 r3 g3
rg4567 = _mm_unpackhi_epi16(r.fVec, g.fVec), // r4 g4 r5 g5 r6 g6 r7 g7
ba0123 = _mm_unpacklo_epi16(b.fVec, a.fVec),
ba4567 = _mm_unpackhi_epi16(b.fVec, a.fVec);
_mm_storeu_si128((__m128i*)ptr + 0, _mm_unpacklo_epi32(rg0123, ba0123));
_mm_storeu_si128((__m128i*)ptr + 1, _mm_unpackhi_epi32(rg0123, ba0123));
_mm_storeu_si128((__m128i*)ptr + 2, _mm_unpacklo_epi32(rg4567, ba4567));
_mm_storeu_si128((__m128i*)ptr + 3, _mm_unpackhi_epi32(rg4567, ba4567));
}
AI SkNx operator + (const SkNx& o) const { return _mm_add_epi16(fVec, o.fVec); }
AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi16(fVec, o.fVec); }
AI SkNx operator * (const SkNx& o) const { return _mm_mullo_epi16(fVec, o.fVec); }
AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
AI SkNx operator | (const SkNx& o) const { return _mm_or_si128(fVec, o.fVec); }
AI SkNx operator << (int bits) const { return _mm_slli_epi16(fVec, bits); }
AI SkNx operator >> (int bits) const { return _mm_srli_epi16(fVec, bits); }
AI static SkNx Min(const SkNx& a, const SkNx& b) {
// No unsigned _mm_min_epu16, so we'll shift into a space where we can use the
// signed version, _mm_min_epi16, then shift back.
const uint16_t top = 0x8000; // Keep this separate from _mm_set1_epi16 or MSVC will whine.
const __m128i top_8x = _mm_set1_epi16(top);
return _mm_add_epi8(top_8x, _mm_min_epi16(_mm_sub_epi8(a.fVec, top_8x),
_mm_sub_epi8(b.fVec, top_8x)));
}
AI SkNx mulHi(const SkNx& m) const {
return _mm_mulhi_epu16(fVec, m.fVec);
}
AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
_mm_andnot_si128(fVec, e.fVec));
}
AI uint16_t operator[](int k) const {
SkASSERT(0 <= k && k < 8);
union { __m128i v; uint16_t us[8]; } pun = {fVec};
return pun.us[k&7];
}
__m128i fVec;
};
template <>
class SkNx<4, uint8_t> {
public:
AI SkNx() {}
AI SkNx(const __m128i& vec) : fVec(vec) {}
AI SkNx(uint8_t a, uint8_t b, uint8_t c, uint8_t d)
: fVec(_mm_setr_epi8(a,b,c,d, 0,0,0,0, 0,0,0,0, 0,0,0,0)) {}
AI static SkNx Load(const void* ptr) { return _mm_cvtsi32_si128(*(const int*)ptr); }
AI void store(void* ptr) const { *(int*)ptr = _mm_cvtsi128_si32(fVec); }
AI uint8_t operator[](int k) const {
SkASSERT(0 <= k && k < 4);
union { __m128i v; uint8_t us[16]; } pun = {fVec};
return pun.us[k&3];
}
// TODO as needed
__m128i fVec;
};
template <>
class SkNx<8, uint8_t> {
public:
AI SkNx(const __m128i& vec) : fVec(vec) {}
AI SkNx() {}
AI SkNx(uint8_t val) : fVec(_mm_set1_epi8(val)) {}
AI static SkNx Load(const void* ptr) { return _mm_loadl_epi64((const __m128i*)ptr); }
AI SkNx(uint8_t a, uint8_t b, uint8_t c, uint8_t d,
uint8_t e, uint8_t f, uint8_t g, uint8_t h)
: fVec(_mm_setr_epi8(a,b,c,d, e,f,g,h, 0,0,0,0, 0,0,0,0)) {}
AI void store(void* ptr) const {_mm_storel_epi64((__m128i*)ptr, fVec);}
AI SkNx saturatedAdd(const SkNx& o) const { return _mm_adds_epu8(fVec, o.fVec); }
AI SkNx operator + (const SkNx& o) const { return _mm_add_epi8(fVec, o.fVec); }
AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi8(fVec, o.fVec); }
AI static SkNx Min(const SkNx& a, const SkNx& b) { return _mm_min_epu8(a.fVec, b.fVec); }
AI SkNx operator < (const SkNx& o) const {
// There's no unsigned _mm_cmplt_epu8, so we flip the sign bits then use a signed compare.
auto flip = _mm_set1_epi8(char(0x80));
return _mm_cmplt_epi8(_mm_xor_si128(flip, fVec), _mm_xor_si128(flip, o.fVec));
}
AI uint8_t operator[](int k) const {
SkASSERT(0 <= k && k < 16);
union { __m128i v; uint8_t us[16]; } pun = {fVec};
return pun.us[k&15];
}
AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
_mm_andnot_si128(fVec, e.fVec));
}
__m128i fVec;
};
template <>
class SkNx<16, uint8_t> {
public:
AI SkNx(const __m128i& vec) : fVec(vec) {}
AI SkNx() {}
AI SkNx(uint8_t val) : fVec(_mm_set1_epi8(val)) {}
AI static SkNx Load(const void* ptr) { return _mm_loadu_si128((const __m128i*)ptr); }
AI SkNx(uint8_t a, uint8_t b, uint8_t c, uint8_t d,
uint8_t e, uint8_t f, uint8_t g, uint8_t h,
uint8_t i, uint8_t j, uint8_t k, uint8_t l,
uint8_t m, uint8_t n, uint8_t o, uint8_t p)
: fVec(_mm_setr_epi8(a,b,c,d, e,f,g,h, i,j,k,l, m,n,o,p)) {}
AI void store(void* ptr) const { _mm_storeu_si128((__m128i*)ptr, fVec); }
AI SkNx saturatedAdd(const SkNx& o) const { return _mm_adds_epu8(fVec, o.fVec); }
AI SkNx operator + (const SkNx& o) const { return _mm_add_epi8(fVec, o.fVec); }
AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi8(fVec, o.fVec); }
AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
AI static SkNx Min(const SkNx& a, const SkNx& b) { return _mm_min_epu8(a.fVec, b.fVec); }
AI SkNx operator < (const SkNx& o) const {
// There's no unsigned _mm_cmplt_epu8, so we flip the sign bits then use a signed compare.
auto flip = _mm_set1_epi8(char(0x80));
return _mm_cmplt_epi8(_mm_xor_si128(flip, fVec), _mm_xor_si128(flip, o.fVec));
}
AI uint8_t operator[](int k) const {
SkASSERT(0 <= k && k < 16);
union { __m128i v; uint8_t us[16]; } pun = {fVec};
return pun.us[k&15];
}
AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
_mm_andnot_si128(fVec, e.fVec));
}
__m128i fVec;
};
template<> AI /*static*/ Sk4f SkNx_cast<float, int32_t>(const Sk4i& src) {
return _mm_cvtepi32_ps(src.fVec);
}
template<> AI /*static*/ Sk4f SkNx_cast<float, uint32_t>(const Sk4u& src) {
return SkNx_cast<float>(Sk4i::Load(&src));
}
template <> AI /*static*/ Sk4i SkNx_cast<int32_t, float>(const Sk4f& src) {
return _mm_cvttps_epi32(src.fVec);
}
template<> AI /*static*/ Sk4h SkNx_cast<uint16_t, int32_t>(const Sk4i& src) {
#if 0 && SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
// TODO: This seems to be causing code generation problems. Investigate?
return _mm_packus_epi32(src.fVec);
#elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
// With SSSE3, we can just shuffle the low 2 bytes from each lane right into place.
const int _ = ~0;
return _mm_shuffle_epi8(src.fVec, _mm_setr_epi8(0,1, 4,5, 8,9, 12,13, _,_,_,_,_,_,_,_));
#else
// With SSE2, we have to sign extend our input, making _mm_packs_epi32 do the pack we want.
__m128i x = _mm_srai_epi32(_mm_slli_epi32(src.fVec, 16), 16);
return _mm_packs_epi32(x,x);
#endif
}
template<> AI /*static*/ Sk4h SkNx_cast<uint16_t, float>(const Sk4f& src) {
return SkNx_cast<uint16_t>(SkNx_cast<int32_t>(src));
}
template<> AI /*static*/ Sk4b SkNx_cast<uint8_t, float>(const Sk4f& src) {
auto _32 = _mm_cvttps_epi32(src.fVec);
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
const int _ = ~0;
return _mm_shuffle_epi8(_32, _mm_setr_epi8(0,4,8,12, _,_,_,_, _,_,_,_, _,_,_,_));
#else
auto _16 = _mm_packus_epi16(_32, _32);
return _mm_packus_epi16(_16, _16);
#endif
}
template<> AI /*static*/ Sk4u SkNx_cast<uint32_t, uint8_t>(const Sk4b& src) {
#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
const int _ = ~0;
return _mm_shuffle_epi8(src.fVec, _mm_setr_epi8(0,_,_,_, 1,_,_,_, 2,_,_,_, 3,_,_,_));
#else
auto _16 = _mm_unpacklo_epi8(src.fVec, _mm_setzero_si128());
return _mm_unpacklo_epi16(_16, _mm_setzero_si128());
#endif
}
template<> AI /*static*/ Sk4i SkNx_cast<int32_t, uint8_t>(const Sk4b& src) {
return SkNx_cast<uint32_t>(src).fVec;
}
template<> AI /*static*/ Sk4f SkNx_cast<float, uint8_t>(const Sk4b& src) {
return _mm_cvtepi32_ps(SkNx_cast<int32_t>(src).fVec);
}
template<> AI /*static*/ Sk4f SkNx_cast<float, uint16_t>(const Sk4h& src) {
auto _32 = _mm_unpacklo_epi16(src.fVec, _mm_setzero_si128());
return _mm_cvtepi32_ps(_32);
}
template<> AI /*static*/ Sk8b SkNx_cast<uint8_t, int32_t>(const Sk8i& src) {
Sk4i lo, hi;
SkNx_split(src, &lo, &hi);
auto t = _mm_packs_epi32(lo.fVec, hi.fVec);
return _mm_packus_epi16(t, t);
}
template<> AI /*static*/ Sk16b SkNx_cast<uint8_t, float>(const Sk16f& src) {
Sk8f ab, cd;
SkNx_split(src, &ab, &cd);
Sk4f a,b,c,d;
SkNx_split(ab, &a, &b);
SkNx_split(cd, &c, &d);
return _mm_packus_epi16(_mm_packus_epi16(_mm_cvttps_epi32(a.fVec),
_mm_cvttps_epi32(b.fVec)),
_mm_packus_epi16(_mm_cvttps_epi32(c.fVec),
_mm_cvttps_epi32(d.fVec)));
}
template<> AI /*static*/ Sk4h SkNx_cast<uint16_t, uint8_t>(const Sk4b& src) {
return _mm_unpacklo_epi8(src.fVec, _mm_setzero_si128());
}
template<> AI /*static*/ Sk8h SkNx_cast<uint16_t, uint8_t>(const Sk8b& src) {
return _mm_unpacklo_epi8(src.fVec, _mm_setzero_si128());
}
template<> AI /*static*/ Sk4b SkNx_cast<uint8_t, uint16_t>(const Sk4h& src) {
return _mm_packus_epi16(src.fVec, src.fVec);
}
template<> AI /*static*/ Sk8b SkNx_cast<uint8_t, uint16_t>(const Sk8h& src) {
return _mm_packus_epi16(src.fVec, src.fVec);
}
template<> AI /*static*/ Sk4i SkNx_cast<int32_t, uint16_t>(const Sk4h& src) {
return _mm_unpacklo_epi16(src.fVec, _mm_setzero_si128());
}
template<> AI /*static*/ Sk4b SkNx_cast<uint8_t, int32_t>(const Sk4i& src) {
return _mm_packus_epi16(_mm_packus_epi16(src.fVec, src.fVec), src.fVec);
}
template<> AI /*static*/ Sk4b SkNx_cast<uint8_t, uint32_t>(const Sk4u& src) {
return _mm_packus_epi16(_mm_packus_epi16(src.fVec, src.fVec), src.fVec);
}
template<> AI /*static*/ Sk4i SkNx_cast<int32_t, uint32_t>(const Sk4u& src) {
return src.fVec;
}
AI static Sk4i Sk4f_round(const Sk4f& x) {
return _mm_cvtps_epi32(x.fVec);
}
} // namespace
#endif//SkNx_sse_DEFINED
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