Exclusion O = (1 - S)D + S(1 - D) O = D + S - 2DS
(int dst, int src)
| 2548 | * O = D + S - 2DS |
| 2549 | */ |
| 2550 | private static int blend_exclusion(int dst, int src) { |
| 2551 | int a = src >>> 24; |
| 2552 | |
| 2553 | int s_a = a + (a >= 0x7F ? 1 : 0); |
| 2554 | int d_a = 0x100 - s_a; |
| 2555 | |
| 2556 | int d_rb = dst & RB_MASK; |
| 2557 | int d_gn = dst & GN_MASK; |
| 2558 | |
| 2559 | int s_gn = src & GN_MASK; |
| 2560 | |
| 2561 | int f_r = (dst & RED_MASK) >> 16; |
| 2562 | int f_b = (dst & BLUE_MASK); |
| 2563 | |
| 2564 | int rb_sub = |
| 2565 | ((src & RED_MASK) * (f_r + (f_r >= 0x7F ? 1 : 0)) | |
| 2566 | (src & BLUE_MASK) * (f_b + (f_b >= 0x7F ? 1 : 0))) |
| 2567 | >>> 7 & 0x01FF01FF; |
| 2568 | int gn_sub = s_gn * (d_gn + (d_gn >= 0x7F00 ? 0x100 : 0)) |
| 2569 | >>> 15 & 0x0001FF00; |
| 2570 | |
| 2571 | return min((dst >>> 24) + a, 0xFF) << 24 | |
| 2572 | (d_rb * d_a + (d_rb + (src & RB_MASK) - rb_sub) * s_a) >>> 8 & RB_MASK | |
| 2573 | (d_gn * d_a + (d_gn + s_gn - gn_sub) * s_a) >>> 8 & GN_MASK; |
| 2574 | } |
| 2575 | |
| 2576 | |
| 2577 | /* |
no test coverage detected