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comparison: gfx/cairo/libpixman/src/pixman-combine64.h
gfx/cairo/libpixman/src/pixman-combine64.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:146dd84d75c5 |
|---|---|
| 1 /* WARNING: This file is generated by combine.pl from combine.inc. | |
| 2 Please edit one of those files rather than this one. */ | |
| 3 | |
| 4 #line 1 "pixman-combine.c.template" | |
| 5 | |
| 6 #define COMPONENT_SIZE 16 | |
| 7 #define MASK 0xffffULL | |
| 8 #define ONE_HALF 0x8000ULL | |
| 9 | |
| 10 #define A_SHIFT 16 * 3 | |
| 11 #define R_SHIFT 16 * 2 | |
| 12 #define G_SHIFT 16 | |
| 13 #define A_MASK 0xffff000000000000ULL | |
| 14 #define R_MASK 0xffff00000000ULL | |
| 15 #define G_MASK 0xffff0000ULL | |
| 16 | |
| 17 #define RB_MASK 0xffff0000ffffULL | |
| 18 #define AG_MASK 0xffff0000ffff0000ULL | |
| 19 #define RB_ONE_HALF 0x800000008000ULL | |
| 20 #define RB_MASK_PLUS_ONE 0x10000000010000ULL | |
| 21 | |
| 22 #define ALPHA_16(x) ((x) >> A_SHIFT) | |
| 23 #define RED_16(x) (((x) >> R_SHIFT) & MASK) | |
| 24 #define GREEN_16(x) (((x) >> G_SHIFT) & MASK) | |
| 25 #define BLUE_16(x) ((x) & MASK) | |
| 26 | |
| 27 /* | |
| 28 * Helper macros. | |
| 29 */ | |
| 30 | |
| 31 #define MUL_UN16(a, b, t) \ | |
| 32 ((t) = (a) * (uint32_t)(b) + ONE_HALF, ((((t) >> G_SHIFT ) + (t) ) >> G_SHIFT )) | |
| 33 | |
| 34 #define DIV_UN16(a, b) \ | |
| 35 (((uint32_t) (a) * MASK + ((b) / 2)) / (b)) | |
| 36 | |
| 37 #define ADD_UN16(x, y, t) \ | |
| 38 ((t) = (x) + (y), \ | |
| 39 (uint64_t) (uint16_t) ((t) | (0 - ((t) >> G_SHIFT)))) | |
| 40 | |
| 41 #define DIV_ONE_UN16(x) \ | |
| 42 (((x) + ONE_HALF + (((x) + ONE_HALF) >> G_SHIFT)) >> G_SHIFT) | |
| 43 | |
| 44 /* | |
| 45 * The methods below use some tricks to be able to do two color | |
| 46 * components at the same time. | |
| 47 */ | |
| 48 | |
| 49 /* | |
| 50 * x_rb = (x_rb * a) / 255 | |
| 51 */ | |
| 52 #define UN16_rb_MUL_UN16(x, a, t) \ | |
| 53 do \ | |
| 54 { \ | |
| 55 t = ((x) & RB_MASK) * (a); \ | |
| 56 t += RB_ONE_HALF; \ | |
| 57 x = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \ | |
| 58 x &= RB_MASK; \ | |
| 59 } while (0) | |
| 60 | |
| 61 /* | |
| 62 * x_rb = min (x_rb + y_rb, 255) | |
| 63 */ | |
| 64 #define UN16_rb_ADD_UN16_rb(x, y, t) \ | |
| 65 do \ | |
| 66 { \ | |
| 67 t = ((x) + (y)); \ | |
| 68 t |= RB_MASK_PLUS_ONE - ((t >> G_SHIFT) & RB_MASK); \ | |
| 69 x = (t & RB_MASK); \ | |
| 70 } while (0) | |
| 71 | |
| 72 /* | |
| 73 * x_rb = (x_rb * a_rb) / 255 | |
| 74 */ | |
| 75 #define UN16_rb_MUL_UN16_rb(x, a, t) \ | |
| 76 do \ | |
| 77 { \ | |
| 78 t = (x & MASK) * (a & MASK); \ | |
| 79 t |= (x & R_MASK) * ((a >> R_SHIFT) & MASK); \ | |
| 80 t += RB_ONE_HALF; \ | |
| 81 t = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \ | |
| 82 x = t & RB_MASK; \ | |
| 83 } while (0) | |
| 84 | |
| 85 /* | |
| 86 * x_c = (x_c * a) / 255 | |
| 87 */ | |
| 88 #define UN16x4_MUL_UN16(x, a) \ | |
| 89 do \ | |
| 90 { \ | |
| 91 uint64_t r1__, r2__, t__; \ | |
| 92 \ | |
| 93 r1__ = (x); \ | |
| 94 UN16_rb_MUL_UN16 (r1__, (a), t__); \ | |
| 95 \ | |
| 96 r2__ = (x) >> G_SHIFT; \ | |
| 97 UN16_rb_MUL_UN16 (r2__, (a), t__); \ | |
| 98 \ | |
| 99 (x) = r1__ | (r2__ << G_SHIFT); \ | |
| 100 } while (0) | |
| 101 | |
| 102 /* | |
| 103 * x_c = (x_c * a) / 255 + y_c | |
| 104 */ | |
| 105 #define UN16x4_MUL_UN16_ADD_UN16x4(x, a, y) \ | |
| 106 do \ | |
| 107 { \ | |
| 108 uint64_t r1__, r2__, r3__, t__; \ | |
| 109 \ | |
| 110 r1__ = (x); \ | |
| 111 r2__ = (y) & RB_MASK; \ | |
| 112 UN16_rb_MUL_UN16 (r1__, (a), t__); \ | |
| 113 UN16_rb_ADD_UN16_rb (r1__, r2__, t__); \ | |
| 114 \ | |
| 115 r2__ = (x) >> G_SHIFT; \ | |
| 116 r3__ = ((y) >> G_SHIFT) & RB_MASK; \ | |
| 117 UN16_rb_MUL_UN16 (r2__, (a), t__); \ | |
| 118 UN16_rb_ADD_UN16_rb (r2__, r3__, t__); \ | |
| 119 \ | |
| 120 (x) = r1__ | (r2__ << G_SHIFT); \ | |
| 121 } while (0) | |
| 122 | |
| 123 /* | |
| 124 * x_c = (x_c * a + y_c * b) / 255 | |
| 125 */ | |
| 126 #define UN16x4_MUL_UN16_ADD_UN16x4_MUL_UN16(x, a, y, b) \ | |
| 127 do \ | |
| 128 { \ | |
| 129 uint64_t r1__, r2__, r3__, t__; \ | |
| 130 \ | |
| 131 r1__ = (x); \ | |
| 132 r2__ = (y); \ | |
| 133 UN16_rb_MUL_UN16 (r1__, (a), t__); \ | |
| 134 UN16_rb_MUL_UN16 (r2__, (b), t__); \ | |
| 135 UN16_rb_ADD_UN16_rb (r1__, r2__, t__); \ | |
| 136 \ | |
| 137 r2__ = ((x) >> G_SHIFT); \ | |
| 138 r3__ = ((y) >> G_SHIFT); \ | |
| 139 UN16_rb_MUL_UN16 (r2__, (a), t__); \ | |
| 140 UN16_rb_MUL_UN16 (r3__, (b), t__); \ | |
| 141 UN16_rb_ADD_UN16_rb (r2__, r3__, t__); \ | |
| 142 \ | |
| 143 (x) = r1__ | (r2__ << G_SHIFT); \ | |
| 144 } while (0) | |
| 145 | |
| 146 /* | |
| 147 * x_c = (x_c * a_c) / 255 | |
| 148 */ | |
| 149 #define UN16x4_MUL_UN16x4(x, a) \ | |
| 150 do \ | |
| 151 { \ | |
| 152 uint64_t r1__, r2__, r3__, t__; \ | |
| 153 \ | |
| 154 r1__ = (x); \ | |
| 155 r2__ = (a); \ | |
| 156 UN16_rb_MUL_UN16_rb (r1__, r2__, t__); \ | |
| 157 \ | |
| 158 r2__ = (x) >> G_SHIFT; \ | |
| 159 r3__ = (a) >> G_SHIFT; \ | |
| 160 UN16_rb_MUL_UN16_rb (r2__, r3__, t__); \ | |
| 161 \ | |
| 162 (x) = r1__ | (r2__ << G_SHIFT); \ | |
| 163 } while (0) | |
| 164 | |
| 165 /* | |
| 166 * x_c = (x_c * a_c) / 255 + y_c | |
| 167 */ | |
| 168 #define UN16x4_MUL_UN16x4_ADD_UN16x4(x, a, y) \ | |
| 169 do \ | |
| 170 { \ | |
| 171 uint64_t r1__, r2__, r3__, t__; \ | |
| 172 \ | |
| 173 r1__ = (x); \ | |
| 174 r2__ = (a); \ | |
| 175 UN16_rb_MUL_UN16_rb (r1__, r2__, t__); \ | |
| 176 r2__ = (y) & RB_MASK; \ | |
| 177 UN16_rb_ADD_UN16_rb (r1__, r2__, t__); \ | |
| 178 \ | |
| 179 r2__ = ((x) >> G_SHIFT); \ | |
| 180 r3__ = ((a) >> G_SHIFT); \ | |
| 181 UN16_rb_MUL_UN16_rb (r2__, r3__, t__); \ | |
| 182 r3__ = ((y) >> G_SHIFT) & RB_MASK; \ | |
| 183 UN16_rb_ADD_UN16_rb (r2__, r3__, t__); \ | |
| 184 \ | |
| 185 (x) = r1__ | (r2__ << G_SHIFT); \ | |
| 186 } while (0) | |
| 187 | |
| 188 /* | |
| 189 * x_c = (x_c * a_c + y_c * b) / 255 | |
| 190 */ | |
| 191 #define UN16x4_MUL_UN16x4_ADD_UN16x4_MUL_UN16(x, a, y, b) \ | |
| 192 do \ | |
| 193 { \ | |
| 194 uint64_t r1__, r2__, r3__, t__; \ | |
| 195 \ | |
| 196 r1__ = (x); \ | |
| 197 r2__ = (a); \ | |
| 198 UN16_rb_MUL_UN16_rb (r1__, r2__, t__); \ | |
| 199 r2__ = (y); \ | |
| 200 UN16_rb_MUL_UN16 (r2__, (b), t__); \ | |
| 201 UN16_rb_ADD_UN16_rb (r1__, r2__, t__); \ | |
| 202 \ | |
| 203 r2__ = (x) >> G_SHIFT; \ | |
| 204 r3__ = (a) >> G_SHIFT; \ | |
| 205 UN16_rb_MUL_UN16_rb (r2__, r3__, t__); \ | |
| 206 r3__ = (y) >> G_SHIFT; \ | |
| 207 UN16_rb_MUL_UN16 (r3__, (b), t__); \ | |
| 208 UN16_rb_ADD_UN16_rb (r2__, r3__, t__); \ | |
| 209 \ | |
| 210 x = r1__ | (r2__ << G_SHIFT); \ | |
| 211 } while (0) | |
| 212 | |
| 213 /* | |
| 214 x_c = min(x_c + y_c, 255) | |
| 215 */ | |
| 216 #define UN16x4_ADD_UN16x4(x, y) \ | |
| 217 do \ | |
| 218 { \ | |
| 219 uint64_t r1__, r2__, r3__, t__; \ | |
| 220 \ | |
| 221 r1__ = (x) & RB_MASK; \ | |
| 222 r2__ = (y) & RB_MASK; \ | |
| 223 UN16_rb_ADD_UN16_rb (r1__, r2__, t__); \ | |
| 224 \ | |
| 225 r2__ = ((x) >> G_SHIFT) & RB_MASK; \ | |
| 226 r3__ = ((y) >> G_SHIFT) & RB_MASK; \ | |
| 227 UN16_rb_ADD_UN16_rb (r2__, r3__, t__); \ | |
| 228 \ | |
| 229 x = r1__ | (r2__ << G_SHIFT); \ | |
| 230 } while (0) |
