Overlay O = 2 MULTIPLY(D, S) = 2DS for D < 0.5 O = 2 SCREEN(D, S) - 1 = 2(S + D - DS) - 1 otherwise
(int dst, int src)
| 2641 | * O = 2 * SCREEN(D, S) - 1 = 2(S + D - DS) - 1 otherwise |
| 2642 | */ |
| 2643 | private static int blend_overlay(int dst, int src) { |
| 2644 | int a = src >>> 24; |
| 2645 | |
| 2646 | int s_a = a + (a >= 0x7F ? 1 : 0); |
| 2647 | int d_a = 0x100 - s_a; |
| 2648 | |
| 2649 | int d_r = dst & RED_MASK; |
| 2650 | int d_g = dst & GREEN_MASK; |
| 2651 | int d_b = dst & BLUE_MASK; |
| 2652 | |
| 2653 | int s_r = src & RED_MASK; |
| 2654 | int s_g = src & GREEN_MASK; |
| 2655 | int s_b = src & BLUE_MASK; |
| 2656 | |
| 2657 | int r = (d_r < 0x800000) ? |
| 2658 | d_r * ((s_r >>> 16) + 1) >>> 7 : |
| 2659 | 0xFF0000 - ((0x100 - (s_r >>> 16)) * (RED_MASK - d_r) >>> 7); |
| 2660 | int g = (d_g < 0x8000) ? |
| 2661 | d_g * (s_g + 0x100) >>> 15 : |
| 2662 | (0xFF00 - ((0x10000 - s_g) * (GREEN_MASK - d_g) >>> 15)); |
| 2663 | int b = (d_b < 0x80) ? |
| 2664 | d_b * (s_b + 1) >>> 7 : |
| 2665 | (0xFF00 - ((0x100 - s_b) * (BLUE_MASK - d_b) << 1)) >>> 8; |
| 2666 | |
| 2667 | return min((dst >>> 24) + a, 0xFF) << 24 | |
| 2668 | ((dst & RB_MASK) * d_a + ((r | b) & RB_MASK) * s_a) >>> 8 & RB_MASK | |
| 2669 | ((dst & GN_MASK) * d_a + (g & GN_MASK) * s_a) >>> 8 & GN_MASK; |
| 2670 | } |
| 2671 | |
| 2672 | |
| 2673 | /** |
no test coverage detected