1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197
|
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WebGLImageConversionSSE_h
#define WebGLImageConversionSSE_h
#if CPU(X86) || CPU(X86_64)
#include <emmintrin.h>
namespace blink {
namespace SIMD {
ALWAYS_INLINE void unpackOneRowOfRGBA4444LittleToRGBA8(const uint16_t*& source,
uint8_t*& destination,
unsigned& pixelsPerRow) {
__m128i immediate0x0f = _mm_set1_epi16(0x0F);
unsigned pixelsPerRowTrunc = (pixelsPerRow / 8) * 8;
for (unsigned i = 0; i < pixelsPerRowTrunc; i += 8) {
__m128i packedValue = _mm_loadu_si128((__m128i*)source);
__m128i r = _mm_srli_epi16(packedValue, 12);
__m128i g = _mm_and_si128(_mm_srli_epi16(packedValue, 8), immediate0x0f);
__m128i b = _mm_and_si128(_mm_srli_epi16(packedValue, 4), immediate0x0f);
__m128i a = _mm_and_si128(packedValue, immediate0x0f);
__m128i componentR = _mm_or_si128(_mm_slli_epi16(r, 4), r);
__m128i componentG = _mm_or_si128(_mm_slli_epi16(g, 4), g);
__m128i componentB = _mm_or_si128(_mm_slli_epi16(b, 4), b);
__m128i componentA = _mm_or_si128(_mm_slli_epi16(a, 4), a);
__m128i componentRG =
_mm_or_si128(_mm_slli_epi16(componentG, 8), componentR);
__m128i componentBA =
_mm_or_si128(_mm_slli_epi16(componentA, 8), componentB);
__m128i componentRGBA1 = _mm_unpackhi_epi16(componentRG, componentBA);
__m128i componentRGBA2 = _mm_unpacklo_epi16(componentRG, componentBA);
_mm_storeu_si128((__m128i*)destination, componentRGBA2);
_mm_storeu_si128((__m128i*)(destination + 16), componentRGBA1);
source += 8;
destination += 32;
}
pixelsPerRow -= pixelsPerRowTrunc;
}
ALWAYS_INLINE void unpackOneRowOfRGBA5551LittleToRGBA8(const uint16_t*& source,
uint8_t*& destination,
unsigned& pixelsPerRow) {
__m128i immediate0x1f = _mm_set1_epi16(0x1F);
__m128i immediate0x7 = _mm_set1_epi16(0x7);
__m128i immediate0x1 = _mm_set1_epi16(0x1);
unsigned pixelsPerRowTrunc = (pixelsPerRow / 8) * 8;
for (unsigned i = 0; i < pixelsPerRowTrunc; i += 8) {
__m128i packedValue = _mm_loadu_si128((__m128i*)source);
__m128i r = _mm_srli_epi16(packedValue, 11);
__m128i g = _mm_and_si128(_mm_srli_epi16(packedValue, 6), immediate0x1f);
__m128i b = _mm_and_si128(_mm_srli_epi16(packedValue, 1), immediate0x1f);
__m128i componentR =
_mm_or_si128(_mm_slli_epi16(r, 3), _mm_and_si128(r, immediate0x7));
__m128i componentG =
_mm_or_si128(_mm_slli_epi16(g, 3), _mm_and_si128(g, immediate0x7));
__m128i componentB =
_mm_or_si128(_mm_slli_epi16(b, 3), _mm_and_si128(b, immediate0x7));
__m128i componentA =
_mm_cmpeq_epi16(_mm_and_si128(packedValue, immediate0x1), immediate0x1);
__m128i componentRG =
_mm_or_si128(_mm_slli_epi16(componentG, 8), componentR);
__m128i componentBA =
_mm_or_si128(_mm_slli_epi16(componentA, 8), componentB);
__m128i componentRGBA1 = _mm_unpackhi_epi16(componentRG, componentBA);
__m128i componentRGBA2 = _mm_unpacklo_epi16(componentRG, componentBA);
_mm_storeu_si128((__m128i*)destination, componentRGBA2);
_mm_storeu_si128((__m128i*)(destination + 16), componentRGBA1);
source += 8;
destination += 32;
}
pixelsPerRow -= pixelsPerRowTrunc;
}
ALWAYS_INLINE void packOneRowOfRGBA8LittleToRA8(const uint8_t*& source,
uint8_t*& destination,
unsigned& pixelsPerRow) {
float tmp[4];
unsigned pixelsPerRowTrunc = (pixelsPerRow / 4) * 4;
const __m128 maxPixelValue = _mm_set1_ps(255.0);
for (unsigned i = 0; i < pixelsPerRowTrunc; i += 4) {
__m128 scaleFactor = _mm_set_ps(
source[15] ? source[15] : 255.0, source[11] ? source[11] : 255.0,
source[7] ? source[7] : 255.0, source[3] ? source[3] : 255.0);
__m128 sourceR = _mm_set_ps(source[12], source[8], source[4], source[0]);
sourceR = _mm_mul_ps(sourceR, _mm_div_ps(maxPixelValue, scaleFactor));
_mm_storeu_ps(tmp, sourceR);
destination[0] = static_cast<uint8_t>(tmp[0]);
destination[1] = static_cast<uint8_t>(source[3]);
destination[2] = static_cast<uint8_t>(tmp[1]);
destination[3] = static_cast<uint8_t>(source[7]);
destination[4] = static_cast<uint8_t>(tmp[2]);
destination[5] = static_cast<uint8_t>(source[11]);
destination[6] = static_cast<uint8_t>(tmp[3]);
destination[7] = static_cast<uint8_t>(source[15]);
source += 16;
destination += 8;
}
pixelsPerRow -= pixelsPerRowTrunc;
}
ALWAYS_INLINE void unpackOneRowOfBGRA8LittleToRGBA8(const uint32_t*& source,
uint32_t*& destination,
unsigned& pixelsPerRow) {
__m128i bgra, rgba;
__m128i brMask = _mm_set1_epi32(0x00ff00ff);
__m128i gaMask = _mm_set1_epi32(0xff00ff00);
unsigned pixelsPerRowTrunc = (pixelsPerRow / 4) * 4;
for (unsigned i = 0; i < pixelsPerRowTrunc; i += 4) {
bgra = _mm_loadu_si128((const __m128i*)(source));
rgba = _mm_shufflehi_epi16(_mm_shufflelo_epi16(bgra, 0xB1), 0xB1);
rgba =
_mm_or_si128(_mm_and_si128(rgba, brMask), _mm_and_si128(bgra, gaMask));
_mm_storeu_si128((__m128i*)(destination), rgba);
source += 4;
destination += 4;
}
pixelsPerRow -= pixelsPerRowTrunc;
}
ALWAYS_INLINE void packOneRowOfRGBA8LittleToR8(const uint8_t*& source,
uint8_t*& destination,
unsigned& pixelsPerRow) {
float tmp[4];
unsigned pixelsPerRowTrunc = (pixelsPerRow / 4) * 4;
for (unsigned i = 0; i < pixelsPerRowTrunc; i += 4) {
__m128 scale =
_mm_set_ps(source[15] ? source[15] : 255, source[11] ? source[11] : 255,
source[7] ? source[7] : 255, source[3] ? source[3] : 255);
__m128 sourceR = _mm_set_ps(source[12], source[8], source[4], source[0]);
sourceR = _mm_mul_ps(sourceR, _mm_div_ps(_mm_set1_ps(255), scale));
_mm_storeu_ps(tmp, sourceR);
destination[0] = static_cast<uint8_t>(tmp[0]);
destination[1] = static_cast<uint8_t>(tmp[1]);
destination[2] = static_cast<uint8_t>(tmp[2]);
destination[3] = static_cast<uint8_t>(tmp[3]);
source += 16;
destination += 4;
}
pixelsPerRow -= pixelsPerRowTrunc;
}
// This function deliberately doesn't mutate the incoming source, destination,
// or pixelsPerRow arguments, since it always handles the full row.
ALWAYS_INLINE void packOneRowOfRGBA8LittleToRGBA8(const uint8_t* source,
uint8_t* destination,
unsigned pixelsPerRow) {
float tmp[4];
float scale;
for (unsigned i = 0; i < pixelsPerRow; i++) {
scale = source[3] ? source[3] : 255;
__m128 sourceR = _mm_set_ps(0, source[2], source[1], source[0]);
sourceR =
_mm_mul_ps(sourceR, _mm_div_ps(_mm_set1_ps(255), _mm_set1_ps(scale)));
_mm_storeu_ps(tmp, sourceR);
destination[0] = static_cast<uint8_t>(tmp[0]);
destination[1] = static_cast<uint8_t>(tmp[1]);
destination[2] = static_cast<uint8_t>(tmp[2]);
destination[3] = source[3];
source += 4;
destination += 4;
}
}
} // namespace SIMD
} // namespace blink
#endif // CPU(X86) || CPU(X86_64)
#endif // WebGLImageConversionSSE_h
|