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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 namespace { // See SkPMFloat.h | 8 namespace { // See SkPMFloat.h |
9 | 9 |
10 static_assert(SK_A32_SHIFT == 24, "This file assumes little-endian."); | 10 static_assert(SK_A32_SHIFT == 24, "This file assumes little-endian."); |
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26 uint8x8_t fix8 = vqmovn_u16(vcombine_u16(fix8_16, vdup_n_u16(0))); | 26 uint8x8_t fix8 = vqmovn_u16(vcombine_u16(fix8_16, vdup_n_u16(0))); |
27 SkPMColor c = vget_lane_u32((uint32x2_t)fix8, 0); | 27 SkPMColor c = vget_lane_u32((uint32x2_t)fix8, 0); |
28 SkPMColorAssert(c); | 28 SkPMColorAssert(c); |
29 return c; | 29 return c; |
30 } | 30 } |
31 | 31 |
32 inline Sk4f SkPMFloat::alphas() const { | 32 inline Sk4f SkPMFloat::alphas() const { |
33 return vdupq_lane_f32(vget_high_f32(fVec), 1); // Duplicate high lane of hi
gh half i.e. lane 3. | 33 return vdupq_lane_f32(vget_high_f32(fVec), 1); // Duplicate high lane of hi
gh half i.e. lane 3. |
34 } | 34 } |
35 | 35 |
36 inline SkPMFloat SkPMFloat::FromBGRx(SkColor c) { | 36 inline SkPMFloat SkPMFloat::FromOpaqueColor(SkColor c) { |
| 37 SkASSERT(SkColorGetA(c) == 0xFF); |
37 uint8x8_t fix8 = (uint8x8_t)vdup_n_u32(c); | 38 uint8x8_t fix8 = (uint8x8_t)vdup_n_u32(c); |
38 #if defined(SK_PMCOLOR_IS_RGBA) | 39 #if defined(SK_PMCOLOR_IS_RGBA) |
39 fix8 = vtbl1_u8(fix8, vcreate_u8(0x0300010203000102ULL)); // 03 00 01 02, 2
x, i.e. swap R&B. | 40 fix8 = vtbl1_u8(fix8, vcreate_u8(0x0300010203000102ULL)); // 03 00 01 02, 2
x, i.e. swap R&B. |
40 #endif | 41 #endif |
41 uint16x8_t fix8_16 = vmovl_u8(fix8); | 42 uint16x8_t fix8_16 = vmovl_u8(fix8); |
42 uint32x4_t fix8_32 = vmovl_u16(vget_low_u16(fix8_16)); | 43 uint32x4_t fix8_32 = vmovl_u16(vget_low_u16(fix8_16)); |
43 fix8_32 = vsetq_lane_u32(0xFF, fix8_32, 3); // Force alpha to 1. | |
44 | 44 |
45 SkPMFloat pmf = Sk4f(vmulq_f32(vcvtq_f32_u32(fix8_32), vdupq_n_f32(1.0f/255)
)); | 45 SkPMFloat pmf = Sk4f(vmulq_f32(vcvtq_f32_u32(fix8_32), vdupq_n_f32(1.0f/255)
)); |
46 SkASSERT(pmf.isValid()); | 46 SkASSERT(pmf.isValid()); |
47 return pmf; | 47 return pmf; |
48 } | 48 } |
49 | 49 |
50 } // namespace | 50 } // namespace |
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