1 /* 2 * Copyright 2011 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 // Define NAME_WRAP(x) before including this header to perform name-wrapping 9 // E.g. for ARM NEON, defined it as 'x ## _neon' to ensure all important 10 // identifiers have a _neon suffix. 11 #ifndef NAME_WRAP 12 #error "Please define NAME_WRAP() before including this file" 13 #endif 14 15 // returns expanded * 5bits 16 static inline uint32_t Filter_565_Expanded(unsigned x, unsigned y, 17 uint32_t a00, uint32_t a01, 18 uint32_t a10, uint32_t a11) { 19 SkASSERT((unsigned)x <= 0xF); 20 SkASSERT((unsigned)y <= 0xF); 21 22 a00 = SkExpand_rgb_16(a00); 23 a01 = SkExpand_rgb_16(a01); 24 a10 = SkExpand_rgb_16(a10); 25 a11 = SkExpand_rgb_16(a11); 26 27 int xy = x * y >> 3; 28 return a00 * (32 - 2*y - 2*x + xy) + 29 a01 * (2*x - xy) + 30 a10 * (2*y - xy) + 31 a11 * xy; 32 } 33 34 // turn an expanded 565 * 5bits into SkPMColor 35 // g:11 | r:10 | x:1 | b:10 36 static inline SkPMColor SkExpanded_565_To_PMColor(uint32_t c) { 37 unsigned r = (c >> 13) & 0xFF; 38 unsigned g = (c >> 24); 39 unsigned b = (c >> 2) & 0xFF; 40 return SkPackARGB32(0xFF, r, g, b); 41 } 42 43 // returns answer in SkPMColor format 44 static inline SkPMColor Filter_4444_D32(unsigned x, unsigned y, 45 uint32_t a00, uint32_t a01, 46 uint32_t a10, uint32_t a11) { 47 SkASSERT((unsigned)x <= 0xF); 48 SkASSERT((unsigned)y <= 0xF); 49 50 a00 = SkExpand_4444(a00); 51 a01 = SkExpand_4444(a01); 52 a10 = SkExpand_4444(a10); 53 a11 = SkExpand_4444(a11); 54 55 int xy = x * y >> 4; 56 uint32_t result = a00 * (16 - y - x + xy) + 57 a01 * (x - xy) + 58 a10 * (y - xy) + 59 a11 * xy; 60 61 return SkCompact_8888(result); 62 } 63 64 static inline U8CPU Filter_8(unsigned x, unsigned y, 65 U8CPU a00, U8CPU a01, 66 U8CPU a10, U8CPU a11) { 67 SkASSERT((unsigned)x <= 0xF); 68 SkASSERT((unsigned)y <= 0xF); 69 70 int xy = x * y; 71 unsigned result = a00 * (256 - 16*y - 16*x + xy) + 72 a01 * (16*x - xy) + 73 a10 * (16*y - xy) + 74 a11 * xy; 75 76 return result >> 8; 77 } 78 79 /***************************************************************************** 80 * 81 * D32 functions 82 * 83 */ 84 85 // SRC == 8888 86 87 #define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, dst) 88 89 #define MAKENAME(suffix) NAME_WRAP(S32_opaque_D32 ## suffix) 90 #define SRCTYPE SkPMColor 91 #define CHECKSTATE(state) SkASSERT(4 == state.fPixmap.info().bytesPerPixel()); \ 92 SkASSERT(state.fAlphaScale == 256) 93 #define RETURNDST(src) src 94 #define SRC_TO_FILTER(src) src 95 #include "SkBitmapProcState_sample.h" 96 97 #undef FILTER_PROC 98 #define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_alpha)(x, y, a, b, c, d, dst, alphaScale) 99 100 #define MAKENAME(suffix) NAME_WRAP(S32_alpha_D32 ## suffix) 101 #define SRCTYPE SkPMColor 102 #define CHECKSTATE(state) SkASSERT(4 == state.fPixmap.info().bytesPerPixel()); \ 103 SkASSERT(state.fAlphaScale < 256) 104 #define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale 105 #define RETURNDST(src) SkAlphaMulQ(src, alphaScale) 106 #define SRC_TO_FILTER(src) src 107 #include "SkBitmapProcState_sample.h" 108 109 // SRC == 565 110 111 #undef FILTER_PROC 112 #define FILTER_PROC(x, y, a, b, c, d, dst) \ 113 do { \ 114 uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d); \ 115 *(dst) = SkExpanded_565_To_PMColor(tmp); \ 116 } while (0) 117 118 #define MAKENAME(suffix) NAME_WRAP(S16_opaque_D32 ## suffix) 119 #define SRCTYPE uint16_t 120 #define CHECKSTATE(state) SkASSERT(kRGB_565_SkColorType == state.fPixmap.colorType()); \ 121 SkASSERT(state.fAlphaScale == 256) 122 #define RETURNDST(src) SkPixel16ToPixel32(src) 123 #define SRC_TO_FILTER(src) src 124 #include "SkBitmapProcState_sample.h" 125 126 #undef FILTER_PROC 127 #define FILTER_PROC(x, y, a, b, c, d, dst) \ 128 do { \ 129 uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d); \ 130 *(dst) = SkAlphaMulQ(SkExpanded_565_To_PMColor(tmp), alphaScale); \ 131 } while (0) 132 133 #define MAKENAME(suffix) NAME_WRAP(S16_alpha_D32 ## suffix) 134 #define SRCTYPE uint16_t 135 #define CHECKSTATE(state) SkASSERT(kRGB_565_SkColorType == state.fPixmap.colorType()); \ 136 SkASSERT(state.fAlphaScale < 256) 137 #define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale 138 #define RETURNDST(src) SkAlphaMulQ(SkPixel16ToPixel32(src), alphaScale) 139 #define SRC_TO_FILTER(src) src 140 #include "SkBitmapProcState_sample.h" 141 142 // SRC == Index8 143 144 #undef FILTER_PROC 145 #define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, dst) 146 147 #define MAKENAME(suffix) NAME_WRAP(SI8_opaque_D32 ## suffix) 148 #define SRCTYPE uint8_t 149 #define CHECKSTATE(state) SkASSERT(kIndex_8_SkColorType == state.fPixmap.colorType()); \ 150 SkASSERT(state.fAlphaScale == 256) 151 #define PREAMBLE(state) const SkPMColor* SK_RESTRICT table = state.fPixmap.ctable()->readColors() 152 #define RETURNDST(src) table[src] 153 #define SRC_TO_FILTER(src) table[src] 154 #define POSTAMBLE(state) 155 #include "SkBitmapProcState_sample.h" 156 157 #undef FILTER_PROC 158 #define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_alpha)(x, y, a, b, c, d, dst, alphaScale) 159 160 #define MAKENAME(suffix) NAME_WRAP(SI8_alpha_D32 ## suffix) 161 #define SRCTYPE uint8_t 162 #define CHECKSTATE(state) SkASSERT(kIndex_8_SkColorType == state.fPixmap.colorType()); \ 163 SkASSERT(state.fAlphaScale < 256) 164 #define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale; \ 165 const SkPMColor* SK_RESTRICT table = state.fPixmap.ctable()->readColors() 166 #define RETURNDST(src) SkAlphaMulQ(table[src], alphaScale) 167 #define SRC_TO_FILTER(src) table[src] 168 #define POSTAMBLE(state) 169 #include "SkBitmapProcState_sample.h" 170 171 // SRC == 4444 172 173 #undef FILTER_PROC 174 #define FILTER_PROC(x, y, a, b, c, d, dst) *(dst) = Filter_4444_D32(x, y, a, b, c, d) 175 176 #define MAKENAME(suffix) NAME_WRAP(S4444_opaque_D32 ## suffix) 177 #define SRCTYPE SkPMColor16 178 #define CHECKSTATE(state) SkASSERT(kARGB_4444_SkColorType == state.fPixmap.colorType()); \ 179 SkASSERT(state.fAlphaScale == 256) 180 #define RETURNDST(src) SkPixel4444ToPixel32(src) 181 #define SRC_TO_FILTER(src) src 182 #include "SkBitmapProcState_sample.h" 183 184 #undef FILTER_PROC 185 #define FILTER_PROC(x, y, a, b, c, d, dst) \ 186 do { \ 187 uint32_t tmp = Filter_4444_D32(x, y, a, b, c, d); \ 188 *(dst) = SkAlphaMulQ(tmp, alphaScale); \ 189 } while (0) 190 191 #define MAKENAME(suffix) NAME_WRAP(S4444_alpha_D32 ## suffix) 192 #define SRCTYPE SkPMColor16 193 #define CHECKSTATE(state) SkASSERT(kARGB_4444_SkColorType == state.fPixmap.colorType()); \ 194 SkASSERT(state.fAlphaScale < 256) 195 #define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale 196 #define RETURNDST(src) SkAlphaMulQ(SkPixel4444ToPixel32(src), alphaScale) 197 #define SRC_TO_FILTER(src) src 198 #include "SkBitmapProcState_sample.h" 199 200 // SRC == A8 201 202 #undef FILTER_PROC 203 #define FILTER_PROC(x, y, a, b, c, d, dst) \ 204 do { \ 205 unsigned tmp = Filter_8(x, y, a, b, c, d); \ 206 *(dst) = SkAlphaMulQ(pmColor, SkAlpha255To256(tmp)); \ 207 } while (0) 208 209 #define MAKENAME(suffix) NAME_WRAP(SA8_alpha_D32 ## suffix) 210 #define SRCTYPE uint8_t 211 #define CHECKSTATE(state) SkASSERT(kAlpha_8_SkColorType == state.fPixmap.colorType()); 212 #define PREAMBLE(state) const SkPMColor pmColor = state.fPaintPMColor; 213 #define RETURNDST(src) SkAlphaMulQ(pmColor, SkAlpha255To256(src)) 214 #define SRC_TO_FILTER(src) src 215 #include "SkBitmapProcState_sample.h" 216 217 // SRC == Gray8 218 219 #undef FILTER_PROC 220 #define FILTER_PROC(x, y, a, b, c, d, dst) \ 221 do { \ 222 unsigned tmp = Filter_8(x, y, a, b, c, d); \ 223 SkPMColor color = SkPackARGB32(0xFF, tmp, tmp, tmp); \ 224 *(dst) = SkAlphaMulQ(color, alphaScale); \ 225 } while (0) 226 227 #define MAKENAME(suffix) NAME_WRAP(SG8_alpha_D32 ## suffix) 228 #define SRCTYPE uint8_t 229 #define CHECKSTATE(state) SkASSERT(kGray_8_SkColorType == state.fPixmap.colorType()); 230 #define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale 231 #define RETURNDST(src) SkAlphaMulQ(SkPackARGB32(0xFF, src, src, src), alphaScale) 232 #define SRC_TO_FILTER(src) src 233 #include "SkBitmapProcState_sample.h" 234 235 236 #define TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max) 237 #define TILEY_PROCF(fy, max) SkClampMax((fy) >> 16, max) 238 #define TILEX_LOW_BITS(fx, max) (((fx) >> 12) & 0xF) 239 #define TILEY_LOW_BITS(fy, max) (((fy) >> 12) & 0xF) 240 241 #undef FILTER_PROC 242 #define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, dst) 243 #define MAKENAME(suffix) NAME_WRAP(Clamp_SI8_opaque_D32 ## suffix) 244 #define SRCTYPE uint8_t 245 #define CHECKSTATE(state) SkASSERT(kIndex_8_SkColorType == state.fPixmap.colorType()) 246 #define PREAMBLE(state) const SkPMColor* SK_RESTRICT table = state.fPixmap.ctable()->readColors() 247 #define SRC_TO_FILTER(src) table[src] 248 #define POSTAMBLE(state) 249 #include "SkBitmapProcState_shaderproc.h" 250 251 #undef NAME_WRAP 252
