gfx/cairo/libpixman/src/pixman-combine.h.template@6474c204b198 (annotated)
gfx/cairo/libpixman/src/pixman-combine.h.template
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | |
| michael@0 | 2 | #define COMPONENT_SIZE |
| michael@0 | 3 | #define MASK |
| michael@0 | 4 | #define ONE_HALF |
| michael@0 | 5 | |
| michael@0 | 6 | #define A_SHIFT |
| michael@0 | 7 | #define R_SHIFT |
| michael@0 | 8 | #define G_SHIFT |
| michael@0 | 9 | #define A_MASK |
| michael@0 | 10 | #define R_MASK |
| michael@0 | 11 | #define G_MASK |
| michael@0 | 12 | |
| michael@0 | 13 | #define RB_MASK |
| michael@0 | 14 | #define AG_MASK |
| michael@0 | 15 | #define RB_ONE_HALF |
| michael@0 | 16 | #define RB_MASK_PLUS_ONE |
| michael@0 | 17 | |
| michael@0 | 18 | #define ALPHA_c(x) ((x) >> A_SHIFT) |
| michael@0 | 19 | #define RED_c(x) (((x) >> R_SHIFT) & MASK) |
| michael@0 | 20 | #define GREEN_c(x) (((x) >> G_SHIFT) & MASK) |
| michael@0 | 21 | #define BLUE_c(x) ((x) & MASK) |
| michael@0 | 22 | |
| michael@0 | 23 | /* |
| michael@0 | 24 | * Helper macros. |
| michael@0 | 25 | */ |
| michael@0 | 26 | |
| michael@0 | 27 | #define MUL_UNc(a, b, t) \ |
| michael@0 | 28 | ((t) = (a) * (comp2_t)(b) + ONE_HALF, ((((t) >> G_SHIFT ) + (t) ) >> G_SHIFT )) |
| michael@0 | 29 | |
| michael@0 | 30 | #define DIV_UNc(a, b) \ |
| michael@0 | 31 | (((comp2_t) (a) * MASK + ((b) / 2)) / (b)) |
| michael@0 | 32 | |
| michael@0 | 33 | #define ADD_UNc(x, y, t) \ |
| michael@0 | 34 | ((t) = (x) + (y), \ |
| michael@0 | 35 | (comp4_t) (comp1_t) ((t) | (0 - ((t) >> G_SHIFT)))) |
| michael@0 | 36 | |
| michael@0 | 37 | #define DIV_ONE_UNc(x) \ |
| michael@0 | 38 | (((x) + ONE_HALF + (((x) + ONE_HALF) >> G_SHIFT)) >> G_SHIFT) |
| michael@0 | 39 | |
| michael@0 | 40 | /* |
| michael@0 | 41 | * The methods below use some tricks to be able to do two color |
| michael@0 | 42 | * components at the same time. |
| michael@0 | 43 | */ |
| michael@0 | 44 | |
| michael@0 | 45 | /* |
| michael@0 | 46 | * x_rb = (x_rb * a) / 255 |
| michael@0 | 47 | */ |
| michael@0 | 48 | #define UNc_rb_MUL_UNc(x, a, t) \ |
| michael@0 | 49 | do \ |
| michael@0 | 50 | { \ |
| michael@0 | 51 | t = ((x) & RB_MASK) * (a); \ |
| michael@0 | 52 | t += RB_ONE_HALF; \ |
| michael@0 | 53 | x = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \ |
| michael@0 | 54 | x &= RB_MASK; \ |
| michael@0 | 55 | } while (0) |
| michael@0 | 56 | |
| michael@0 | 57 | /* |
| michael@0 | 58 | * x_rb = min (x_rb + y_rb, 255) |
| michael@0 | 59 | */ |
| michael@0 | 60 | #define UNc_rb_ADD_UNc_rb(x, y, t) \ |
| michael@0 | 61 | do \ |
| michael@0 | 62 | { \ |
| michael@0 | 63 | t = ((x) + (y)); \ |
| michael@0 | 64 | t |= RB_MASK_PLUS_ONE - ((t >> G_SHIFT) & RB_MASK); \ |
| michael@0 | 65 | x = (t & RB_MASK); \ |
| michael@0 | 66 | } while (0) |
| michael@0 | 67 | |
| michael@0 | 68 | /* |
| michael@0 | 69 | * x_rb = (x_rb * a_rb) / 255 |
| michael@0 | 70 | */ |
| michael@0 | 71 | #define UNc_rb_MUL_UNc_rb(x, a, t) \ |
| michael@0 | 72 | do \ |
| michael@0 | 73 | { \ |
| michael@0 | 74 | t = (x & MASK) * (a & MASK); \ |
| michael@0 | 75 | t |= (x & R_MASK) * ((a >> R_SHIFT) & MASK); \ |
| michael@0 | 76 | t += RB_ONE_HALF; \ |
| michael@0 | 77 | t = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \ |
| michael@0 | 78 | x = t & RB_MASK; \ |
| michael@0 | 79 | } while (0) |
| michael@0 | 80 | |
| michael@0 | 81 | /* |
| michael@0 | 82 | * x_c = (x_c * a) / 255 |
| michael@0 | 83 | */ |
| michael@0 | 84 | #define UNcx4_MUL_UNc(x, a) \ |
| michael@0 | 85 | do \ |
| michael@0 | 86 | { \ |
| michael@0 | 87 | comp4_t r1__, r2__, t__; \ |
| michael@0 | 88 | \ |
| michael@0 | 89 | r1__ = (x); \ |
| michael@0 | 90 | UNc_rb_MUL_UNc (r1__, (a), t__); \ |
| michael@0 | 91 | \ |
| michael@0 | 92 | r2__ = (x) >> G_SHIFT; \ |
| michael@0 | 93 | UNc_rb_MUL_UNc (r2__, (a), t__); \ |
| michael@0 | 94 | \ |
| michael@0 | 95 | (x) = r1__ | (r2__ << G_SHIFT); \ |
| michael@0 | 96 | } while (0) |
| michael@0 | 97 | |
| michael@0 | 98 | /* |
| michael@0 | 99 | * x_c = (x_c * a) / 255 + y_c |
| michael@0 | 100 | */ |
| michael@0 | 101 | #define UNcx4_MUL_UNc_ADD_UNcx4(x, a, y) \ |
| michael@0 | 102 | do \ |
| michael@0 | 103 | { \ |
| michael@0 | 104 | comp4_t r1__, r2__, r3__, t__; \ |
| michael@0 | 105 | \ |
| michael@0 | 106 | r1__ = (x); \ |
| michael@0 | 107 | r2__ = (y) & RB_MASK; \ |
| michael@0 | 108 | UNc_rb_MUL_UNc (r1__, (a), t__); \ |
| michael@0 | 109 | UNc_rb_ADD_UNc_rb (r1__, r2__, t__); \ |
| michael@0 | 110 | \ |
| michael@0 | 111 | r2__ = (x) >> G_SHIFT; \ |
| michael@0 | 112 | r3__ = ((y) >> G_SHIFT) & RB_MASK; \ |
| michael@0 | 113 | UNc_rb_MUL_UNc (r2__, (a), t__); \ |
| michael@0 | 114 | UNc_rb_ADD_UNc_rb (r2__, r3__, t__); \ |
| michael@0 | 115 | \ |
| michael@0 | 116 | (x) = r1__ | (r2__ << G_SHIFT); \ |
| michael@0 | 117 | } while (0) |
| michael@0 | 118 | |
| michael@0 | 119 | /* |
| michael@0 | 120 | * x_c = (x_c * a + y_c * b) / 255 |
| michael@0 | 121 | */ |
| michael@0 | 122 | #define UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc(x, a, y, b) \ |
| michael@0 | 123 | do \ |
| michael@0 | 124 | { \ |
| michael@0 | 125 | comp4_t r1__, r2__, r3__, t__; \ |
| michael@0 | 126 | \ |
| michael@0 | 127 | r1__ = (x); \ |
| michael@0 | 128 | r2__ = (y); \ |
| michael@0 | 129 | UNc_rb_MUL_UNc (r1__, (a), t__); \ |
| michael@0 | 130 | UNc_rb_MUL_UNc (r2__, (b), t__); \ |
| michael@0 | 131 | UNc_rb_ADD_UNc_rb (r1__, r2__, t__); \ |
| michael@0 | 132 | \ |
| michael@0 | 133 | r2__ = ((x) >> G_SHIFT); \ |
| michael@0 | 134 | r3__ = ((y) >> G_SHIFT); \ |
| michael@0 | 135 | UNc_rb_MUL_UNc (r2__, (a), t__); \ |
| michael@0 | 136 | UNc_rb_MUL_UNc (r3__, (b), t__); \ |
| michael@0 | 137 | UNc_rb_ADD_UNc_rb (r2__, r3__, t__); \ |
| michael@0 | 138 | \ |
| michael@0 | 139 | (x) = r1__ | (r2__ << G_SHIFT); \ |
| michael@0 | 140 | } while (0) |
| michael@0 | 141 | |
| michael@0 | 142 | /* |
| michael@0 | 143 | * x_c = (x_c * a_c) / 255 |
| michael@0 | 144 | */ |
| michael@0 | 145 | #define UNcx4_MUL_UNcx4(x, a) \ |
| michael@0 | 146 | do \ |
| michael@0 | 147 | { \ |
| michael@0 | 148 | comp4_t r1__, r2__, r3__, t__; \ |
| michael@0 | 149 | \ |
| michael@0 | 150 | r1__ = (x); \ |
| michael@0 | 151 | r2__ = (a); \ |
| michael@0 | 152 | UNc_rb_MUL_UNc_rb (r1__, r2__, t__); \ |
| michael@0 | 153 | \ |
| michael@0 | 154 | r2__ = (x) >> G_SHIFT; \ |
| michael@0 | 155 | r3__ = (a) >> G_SHIFT; \ |
| michael@0 | 156 | UNc_rb_MUL_UNc_rb (r2__, r3__, t__); \ |
| michael@0 | 157 | \ |
| michael@0 | 158 | (x) = r1__ | (r2__ << G_SHIFT); \ |
| michael@0 | 159 | } while (0) |
| michael@0 | 160 | |
| michael@0 | 161 | /* |
| michael@0 | 162 | * x_c = (x_c * a_c) / 255 + y_c |
| michael@0 | 163 | */ |
| michael@0 | 164 | #define UNcx4_MUL_UNcx4_ADD_UNcx4(x, a, y) \ |
| michael@0 | 165 | do \ |
| michael@0 | 166 | { \ |
| michael@0 | 167 | comp4_t r1__, r2__, r3__, t__; \ |
| michael@0 | 168 | \ |
| michael@0 | 169 | r1__ = (x); \ |
| michael@0 | 170 | r2__ = (a); \ |
| michael@0 | 171 | UNc_rb_MUL_UNc_rb (r1__, r2__, t__); \ |
| michael@0 | 172 | r2__ = (y) & RB_MASK; \ |
| michael@0 | 173 | UNc_rb_ADD_UNc_rb (r1__, r2__, t__); \ |
| michael@0 | 174 | \ |
| michael@0 | 175 | r2__ = ((x) >> G_SHIFT); \ |
| michael@0 | 176 | r3__ = ((a) >> G_SHIFT); \ |
| michael@0 | 177 | UNc_rb_MUL_UNc_rb (r2__, r3__, t__); \ |
| michael@0 | 178 | r3__ = ((y) >> G_SHIFT) & RB_MASK; \ |
| michael@0 | 179 | UNc_rb_ADD_UNc_rb (r2__, r3__, t__); \ |
| michael@0 | 180 | \ |
| michael@0 | 181 | (x) = r1__ | (r2__ << G_SHIFT); \ |
| michael@0 | 182 | } while (0) |
| michael@0 | 183 | |
| michael@0 | 184 | /* |
| michael@0 | 185 | * x_c = (x_c * a_c + y_c * b) / 255 |
| michael@0 | 186 | */ |
| michael@0 | 187 | #define UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc(x, a, y, b) \ |
| michael@0 | 188 | do \ |
| michael@0 | 189 | { \ |
| michael@0 | 190 | comp4_t r1__, r2__, r3__, t__; \ |
| michael@0 | 191 | \ |
| michael@0 | 192 | r1__ = (x); \ |
| michael@0 | 193 | r2__ = (a); \ |
| michael@0 | 194 | UNc_rb_MUL_UNc_rb (r1__, r2__, t__); \ |
| michael@0 | 195 | r2__ = (y); \ |
| michael@0 | 196 | UNc_rb_MUL_UNc (r2__, (b), t__); \ |
| michael@0 | 197 | UNc_rb_ADD_UNc_rb (r1__, r2__, t__); \ |
| michael@0 | 198 | \ |
| michael@0 | 199 | r2__ = (x) >> G_SHIFT; \ |
| michael@0 | 200 | r3__ = (a) >> G_SHIFT; \ |
| michael@0 | 201 | UNc_rb_MUL_UNc_rb (r2__, r3__, t__); \ |
| michael@0 | 202 | r3__ = (y) >> G_SHIFT; \ |
| michael@0 | 203 | UNc_rb_MUL_UNc (r3__, (b), t__); \ |
| michael@0 | 204 | UNc_rb_ADD_UNc_rb (r2__, r3__, t__); \ |
| michael@0 | 205 | \ |
| michael@0 | 206 | x = r1__ | (r2__ << G_SHIFT); \ |
| michael@0 | 207 | } while (0) |
| michael@0 | 208 | |
| michael@0 | 209 | /* |
| michael@0 | 210 | x_c = min(x_c + y_c, 255) |
| michael@0 | 211 | */ |
| michael@0 | 212 | #define UNcx4_ADD_UNcx4(x, y) \ |
| michael@0 | 213 | do \ |
| michael@0 | 214 | { \ |
| michael@0 | 215 | comp4_t r1__, r2__, r3__, t__; \ |
| michael@0 | 216 | \ |
| michael@0 | 217 | r1__ = (x) & RB_MASK; \ |
| michael@0 | 218 | r2__ = (y) & RB_MASK; \ |
| michael@0 | 219 | UNc_rb_ADD_UNc_rb (r1__, r2__, t__); \ |
| michael@0 | 220 | \ |
| michael@0 | 221 | r2__ = ((x) >> G_SHIFT) & RB_MASK; \ |
| michael@0 | 222 | r3__ = ((y) >> G_SHIFT) & RB_MASK; \ |
| michael@0 | 223 | UNc_rb_ADD_UNc_rb (r2__, r3__, t__); \ |
| michael@0 | 224 | \ |
| michael@0 | 225 | x = r1__ | (r2__ << G_SHIFT); \ |
| michael@0 | 226 | } while (0) |
