1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 namespace { // See Sk4px.h 9 10 inline Sk4px Sk4px::DupPMColor(SkPMColor px) { return Sk16b((uint8x16_t)vdupq_n_u32(px)); } 11 12 inline Sk4px Sk4px::Load4(const SkPMColor px[4]) { 13 return Sk16b((uint8x16_t)vld1q_u32(px)); 14 } 15 inline Sk4px Sk4px::Load2(const SkPMColor px[2]) { 16 uint32x2_t px2 = vld1_u32(px); 17 return Sk16b((uint8x16_t)vcombine_u32(px2, px2)); 18 } 19 inline Sk4px Sk4px::Load1(const SkPMColor px[1]) { 20 return Sk16b((uint8x16_t)vdupq_n_u32(*px)); 21 } 22 23 inline void Sk4px::store4(SkPMColor px[4]) const { 24 vst1q_u32(px, (uint32x4_t)this->fVec); 25 } 26 inline void Sk4px::store2(SkPMColor px[2]) const { 27 vst1_u32(px, (uint32x2_t)vget_low_u8(this->fVec)); 28 } 29 inline void Sk4px::store1(SkPMColor px[1]) const { 30 vst1q_lane_u32(px, (uint32x4_t)this->fVec, 0); 31 } 32 33 inline Sk4px::Wide Sk4px::widenLo() const { 34 return Sk16h(vmovl_u8(vget_low_u8 (this->fVec)), 35 vmovl_u8(vget_high_u8(this->fVec))); 36 } 37 38 inline Sk4px::Wide Sk4px::widenHi() const { 39 return Sk16h(vshll_n_u8(vget_low_u8 (this->fVec), 8), 40 vshll_n_u8(vget_high_u8(this->fVec), 8)); 41 } 42 43 inline Sk4px::Wide Sk4px::widenLoHi() const { 44 auto zipped = vzipq_u8(this->fVec, this->fVec); 45 return Sk16h((uint16x8_t)zipped.val[0], 46 (uint16x8_t)zipped.val[1]); 47 } 48 49 inline Sk4px::Wide Sk4px::mulWiden(const Sk16b& other) const { 50 return Sk16h(vmull_u8(vget_low_u8 (this->fVec), vget_low_u8 (other.fVec)), 51 vmull_u8(vget_high_u8(this->fVec), vget_high_u8(other.fVec))); 52 } 53 54 inline Sk4px Sk4px::Wide::addNarrowHi(const Sk16h& other) const { 55 const Sk4px::Wide o(other); // Should be no code, but allows us to access fLo, fHi. 56 return Sk16b(vcombine_u8(vaddhn_u16(this->fLo.fVec, o.fLo.fVec), 57 vaddhn_u16(this->fHi.fVec, o.fHi.fVec))); 58 } 59 60 inline Sk4px Sk4px::Wide::div255() const { 61 // Calculated as (x + (x+128)>>8 +128) >> 8. The 'r' in each instruction provides each +128. 62 return Sk16b(vcombine_u8(vraddhn_u16(this->fLo.fVec, vrshrq_n_u16(this->fLo.fVec, 8)), 63 vraddhn_u16(this->fHi.fVec, vrshrq_n_u16(this->fHi.fVec, 8)))); 64 } 65 66 inline Sk4px Sk4px::alphas() const { 67 auto as = vshrq_n_u32((uint32x4_t)fVec, SK_A32_SHIFT); // ___3 ___2 ___1 ___0 68 return Sk16b((uint8x16_t)vmulq_n_u32(as, 0x01010101)); // 3333 2222 1111 0000 69 } 70 71 inline Sk4px Sk4px::Load4Alphas(const SkAlpha a[4]) { 72 uint8x16_t a8 = vdupq_n_u8(0); // ____ ____ ____ ____ 73 a8 = vld1q_lane_u8(a+0, a8, 0); // ____ ____ ____ ___0 74 a8 = vld1q_lane_u8(a+1, a8, 4); // ____ ____ ___1 ___0 75 a8 = vld1q_lane_u8(a+2, a8, 8); // ____ ___2 ___1 ___0 76 a8 = vld1q_lane_u8(a+3, a8, 12); // ___3 ___2 ___1 ___0 77 auto a32 = (uint32x4_t)a8; // 78 return Sk16b((uint8x16_t)vmulq_n_u32(a32, 0x01010101)); // 3333 2222 1111 0000 79 } 80 81 inline Sk4px Sk4px::Load2Alphas(const SkAlpha a[2]) { 82 uint8x16_t a8 = vdupq_n_u8(0); // ____ ____ ____ ____ 83 a8 = vld1q_lane_u8(a+0, a8, 0); // ____ ____ ____ ___0 84 a8 = vld1q_lane_u8(a+1, a8, 4); // ____ ____ ___1 ___0 85 auto a32 = (uint32x4_t)a8; // 86 return Sk16b((uint8x16_t)vmulq_n_u32(a32, 0x01010101)); // ____ ____ 1111 0000 87 } 88 89 inline Sk4px Sk4px::zeroColors() const { 90 return Sk16b(vandq_u8(this->fVec, (uint8x16_t)vdupq_n_u32(0xFF << SK_A32_SHIFT))); 91 } 92 93 inline Sk4px Sk4px::zeroAlphas() const { 94 // vbic(a,b) == a & ~b 95 return Sk16b(vbicq_u8(this->fVec, (uint8x16_t)vdupq_n_u32(0xFF << SK_A32_SHIFT))); 96 } 97 98 } // namespace 99 100
