Lines Matching defs:wg
872 float wr = 0.2126, wg = 0.7152, wb = 0.0722; // ITU709 recommended constants
875 float y = wr * r + wg * g + wb * b;
906 // y = wr * r + wg * g + wb * b
907 // wr * r + wg * g + wb * b = y
908 // wg * g = y - wr * r - wb * b
909 // g = (y - wr * r - wb * b) / wg
914 float g = (y - wr * r - wb * b) / wg;
