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)
| 2788 | * O = 2 * SCREEN(D, S) - 1 = 2(S + D - DS) - 1 otherwise |
| 2789 | */ |
| 2790 | private static int blend_overlay(int dst, int src) { |
| 2791 | int a = src >>> 24; |
| 2792 | |
| 2793 | int s_a = a + (a >= 0x7F ? 1 : 0); |
| 2794 | int d_a = 0x100 - s_a; |
| 2795 | |
| 2796 | int d_r = dst & RED_MASK; |
| 2797 | int d_g = dst & GREEN_MASK; |
| 2798 | int d_b = dst & BLUE_MASK; |
| 2799 | |
| 2800 | int s_r = src & RED_MASK; |
| 2801 | int s_g = src & GREEN_MASK; |
| 2802 | int s_b = src & BLUE_MASK; |
| 2803 | |
| 2804 | int r = (d_r < 0x800000) ? |
| 2805 | d_r * ((s_r >>> 16) + 1) >>> 7 : |
| 2806 | 0xFF0000 - ((0x100 - (s_r >>> 16)) * (RED_MASK - d_r) >>> 7); |
| 2807 | int g = (d_g < 0x8000) ? |
| 2808 | d_g * (s_g + 0x100) >>> 15 : |
| 2809 | (0xFF00 - ((0x10000 - s_g) * (GREEN_MASK - d_g) >>> 15)); |
| 2810 | int b = (d_b < 0x80) ? |
| 2811 | d_b * (s_b + 1) >>> 7 : |
| 2812 | (0xFF00 - ((0x100 - s_b) * (BLUE_MASK - d_b) << 1)) >>> 8; |
| 2813 | |
| 2814 | return min((dst >>> 24) + a, 0xFF) << 24 | |
| 2815 | ((dst & RB_MASK) * d_a + ((r | b) & RB_MASK) * s_a) >>> 8 & RB_MASK | |
| 2816 | ((dst & GN_MASK) * d_a + (g & GN_MASK) * s_a) >>> 8 & GN_MASK; |
| 2817 | } |
| 2818 | |
| 2819 | |
| 2820 | /** |
no test coverage detected