1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/cairo/libpixman/src/pixman-combine.h.template Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,226 @@
1.4 +
1.5 +#define COMPONENT_SIZE
1.6 +#define MASK
1.7 +#define ONE_HALF
1.8 +
1.9 +#define A_SHIFT
1.10 +#define R_SHIFT
1.11 +#define G_SHIFT
1.12 +#define A_MASK
1.13 +#define R_MASK
1.14 +#define G_MASK
1.15 +
1.16 +#define RB_MASK
1.17 +#define AG_MASK
1.18 +#define RB_ONE_HALF
1.19 +#define RB_MASK_PLUS_ONE
1.20 +
1.21 +#define ALPHA_c(x) ((x) >> A_SHIFT)
1.22 +#define RED_c(x) (((x) >> R_SHIFT) & MASK)
1.23 +#define GREEN_c(x) (((x) >> G_SHIFT) & MASK)
1.24 +#define BLUE_c(x) ((x) & MASK)
1.25 +
1.26 +/*
1.27 + * Helper macros.
1.28 + */
1.29 +
1.30 +#define MUL_UNc(a, b, t) \
1.31 + ((t) = (a) * (comp2_t)(b) + ONE_HALF, ((((t) >> G_SHIFT ) + (t) ) >> G_SHIFT ))
1.32 +
1.33 +#define DIV_UNc(a, b) \
1.34 + (((comp2_t) (a) * MASK + ((b) / 2)) / (b))
1.35 +
1.36 +#define ADD_UNc(x, y, t) \
1.37 + ((t) = (x) + (y), \
1.38 + (comp4_t) (comp1_t) ((t) | (0 - ((t) >> G_SHIFT))))
1.39 +
1.40 +#define DIV_ONE_UNc(x) \
1.41 + (((x) + ONE_HALF + (((x) + ONE_HALF) >> G_SHIFT)) >> G_SHIFT)
1.42 +
1.43 +/*
1.44 + * The methods below use some tricks to be able to do two color
1.45 + * components at the same time.
1.46 + */
1.47 +
1.48 +/*
1.49 + * x_rb = (x_rb * a) / 255
1.50 + */
1.51 +#define UNc_rb_MUL_UNc(x, a, t) \
1.52 + do \
1.53 + { \
1.54 + t = ((x) & RB_MASK) * (a); \
1.55 + t += RB_ONE_HALF; \
1.56 + x = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \
1.57 + x &= RB_MASK; \
1.58 + } while (0)
1.59 +
1.60 +/*
1.61 + * x_rb = min (x_rb + y_rb, 255)
1.62 + */
1.63 +#define UNc_rb_ADD_UNc_rb(x, y, t) \
1.64 + do \
1.65 + { \
1.66 + t = ((x) + (y)); \
1.67 + t |= RB_MASK_PLUS_ONE - ((t >> G_SHIFT) & RB_MASK); \
1.68 + x = (t & RB_MASK); \
1.69 + } while (0)
1.70 +
1.71 +/*
1.72 + * x_rb = (x_rb * a_rb) / 255
1.73 + */
1.74 +#define UNc_rb_MUL_UNc_rb(x, a, t) \
1.75 + do \
1.76 + { \
1.77 + t = (x & MASK) * (a & MASK); \
1.78 + t |= (x & R_MASK) * ((a >> R_SHIFT) & MASK); \
1.79 + t += RB_ONE_HALF; \
1.80 + t = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \
1.81 + x = t & RB_MASK; \
1.82 + } while (0)
1.83 +
1.84 +/*
1.85 + * x_c = (x_c * a) / 255
1.86 + */
1.87 +#define UNcx4_MUL_UNc(x, a) \
1.88 + do \
1.89 + { \
1.90 + comp4_t r1__, r2__, t__; \
1.91 + \
1.92 + r1__ = (x); \
1.93 + UNc_rb_MUL_UNc (r1__, (a), t__); \
1.94 + \
1.95 + r2__ = (x) >> G_SHIFT; \
1.96 + UNc_rb_MUL_UNc (r2__, (a), t__); \
1.97 + \
1.98 + (x) = r1__ | (r2__ << G_SHIFT); \
1.99 + } while (0)
1.100 +
1.101 +/*
1.102 + * x_c = (x_c * a) / 255 + y_c
1.103 + */
1.104 +#define UNcx4_MUL_UNc_ADD_UNcx4(x, a, y) \
1.105 + do \
1.106 + { \
1.107 + comp4_t r1__, r2__, r3__, t__; \
1.108 + \
1.109 + r1__ = (x); \
1.110 + r2__ = (y) & RB_MASK; \
1.111 + UNc_rb_MUL_UNc (r1__, (a), t__); \
1.112 + UNc_rb_ADD_UNc_rb (r1__, r2__, t__); \
1.113 + \
1.114 + r2__ = (x) >> G_SHIFT; \
1.115 + r3__ = ((y) >> G_SHIFT) & RB_MASK; \
1.116 + UNc_rb_MUL_UNc (r2__, (a), t__); \
1.117 + UNc_rb_ADD_UNc_rb (r2__, r3__, t__); \
1.118 + \
1.119 + (x) = r1__ | (r2__ << G_SHIFT); \
1.120 + } while (0)
1.121 +
1.122 +/*
1.123 + * x_c = (x_c * a + y_c * b) / 255
1.124 + */
1.125 +#define UNcx4_MUL_UNc_ADD_UNcx4_MUL_UNc(x, a, y, b) \
1.126 + do \
1.127 + { \
1.128 + comp4_t r1__, r2__, r3__, t__; \
1.129 + \
1.130 + r1__ = (x); \
1.131 + r2__ = (y); \
1.132 + UNc_rb_MUL_UNc (r1__, (a), t__); \
1.133 + UNc_rb_MUL_UNc (r2__, (b), t__); \
1.134 + UNc_rb_ADD_UNc_rb (r1__, r2__, t__); \
1.135 + \
1.136 + r2__ = ((x) >> G_SHIFT); \
1.137 + r3__ = ((y) >> G_SHIFT); \
1.138 + UNc_rb_MUL_UNc (r2__, (a), t__); \
1.139 + UNc_rb_MUL_UNc (r3__, (b), t__); \
1.140 + UNc_rb_ADD_UNc_rb (r2__, r3__, t__); \
1.141 + \
1.142 + (x) = r1__ | (r2__ << G_SHIFT); \
1.143 + } while (0)
1.144 +
1.145 +/*
1.146 + * x_c = (x_c * a_c) / 255
1.147 + */
1.148 +#define UNcx4_MUL_UNcx4(x, a) \
1.149 + do \
1.150 + { \
1.151 + comp4_t r1__, r2__, r3__, t__; \
1.152 + \
1.153 + r1__ = (x); \
1.154 + r2__ = (a); \
1.155 + UNc_rb_MUL_UNc_rb (r1__, r2__, t__); \
1.156 + \
1.157 + r2__ = (x) >> G_SHIFT; \
1.158 + r3__ = (a) >> G_SHIFT; \
1.159 + UNc_rb_MUL_UNc_rb (r2__, r3__, t__); \
1.160 + \
1.161 + (x) = r1__ | (r2__ << G_SHIFT); \
1.162 + } while (0)
1.163 +
1.164 +/*
1.165 + * x_c = (x_c * a_c) / 255 + y_c
1.166 + */
1.167 +#define UNcx4_MUL_UNcx4_ADD_UNcx4(x, a, y) \
1.168 + do \
1.169 + { \
1.170 + comp4_t r1__, r2__, r3__, t__; \
1.171 + \
1.172 + r1__ = (x); \
1.173 + r2__ = (a); \
1.174 + UNc_rb_MUL_UNc_rb (r1__, r2__, t__); \
1.175 + r2__ = (y) & RB_MASK; \
1.176 + UNc_rb_ADD_UNc_rb (r1__, r2__, t__); \
1.177 + \
1.178 + r2__ = ((x) >> G_SHIFT); \
1.179 + r3__ = ((a) >> G_SHIFT); \
1.180 + UNc_rb_MUL_UNc_rb (r2__, r3__, t__); \
1.181 + r3__ = ((y) >> G_SHIFT) & RB_MASK; \
1.182 + UNc_rb_ADD_UNc_rb (r2__, r3__, t__); \
1.183 + \
1.184 + (x) = r1__ | (r2__ << G_SHIFT); \
1.185 + } while (0)
1.186 +
1.187 +/*
1.188 + * x_c = (x_c * a_c + y_c * b) / 255
1.189 + */
1.190 +#define UNcx4_MUL_UNcx4_ADD_UNcx4_MUL_UNc(x, a, y, b) \
1.191 + do \
1.192 + { \
1.193 + comp4_t r1__, r2__, r3__, t__; \
1.194 + \
1.195 + r1__ = (x); \
1.196 + r2__ = (a); \
1.197 + UNc_rb_MUL_UNc_rb (r1__, r2__, t__); \
1.198 + r2__ = (y); \
1.199 + UNc_rb_MUL_UNc (r2__, (b), t__); \
1.200 + UNc_rb_ADD_UNc_rb (r1__, r2__, t__); \
1.201 + \
1.202 + r2__ = (x) >> G_SHIFT; \
1.203 + r3__ = (a) >> G_SHIFT; \
1.204 + UNc_rb_MUL_UNc_rb (r2__, r3__, t__); \
1.205 + r3__ = (y) >> G_SHIFT; \
1.206 + UNc_rb_MUL_UNc (r3__, (b), t__); \
1.207 + UNc_rb_ADD_UNc_rb (r2__, r3__, t__); \
1.208 + \
1.209 + x = r1__ | (r2__ << G_SHIFT); \
1.210 + } while (0)
1.211 +
1.212 +/*
1.213 + x_c = min(x_c + y_c, 255)
1.214 +*/
1.215 +#define UNcx4_ADD_UNcx4(x, y) \
1.216 + do \
1.217 + { \
1.218 + comp4_t r1__, r2__, r3__, t__; \
1.219 + \
1.220 + r1__ = (x) & RB_MASK; \
1.221 + r2__ = (y) & RB_MASK; \
1.222 + UNc_rb_ADD_UNc_rb (r1__, r2__, t__); \
1.223 + \
1.224 + r2__ = ((x) >> G_SHIFT) & RB_MASK; \
1.225 + r3__ = ((y) >> G_SHIFT) & RB_MASK; \
1.226 + UNc_rb_ADD_UNc_rb (r2__, r3__, t__); \
1.227 + \
1.228 + x = r1__ | (r2__ << G_SHIFT); \
1.229 + } while (0)
