Open captnfab opened 5 months ago
Probably a typo, but there is an error in the Argb code computation, some bits should be shifted but are not.
// 24 23 22 21 | 20 19 18 17 | 16 15 14 13 | 12 11 10 09 | 08 07 06 05 | 04 03 02 01 // 0 0 0 0 | 0 0 0 0 | 0 r1 r2 r3 | r4 r5 g1 g2 | g3 g4 g5 b1 | b2 b3 b4 b5 // 0 0 0 0 | 0 0 0 0 | 0 1 1 1 | 1 1 0 0 | 0 0 0 0 | 0 0 0 0 = 0x7c00 // 0 0 0 0 | 0 0 0 0 | 0 1 1 1 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 = 0x7000 // 1 1 1 1 | 1 1 1 1 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 = (0x7c00 << 9) | (0x7000 << 4) // 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 1 1 | 1 1 1 0 | 0 0 0 0 = 0x3e0 // 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 1 1 | 1 0 0 0 | 0 0 0 0 = 0x300 // 0 0 0 0 | 0 0 0 0 | 1 1 1 1 | 1 1 1 1 | 0 0 0 0 | 0 0 0 0 = (0x3e0 << 6) | (0x300 << 1) // 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 1 | 1 1 1 1 = 0x1f // 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 1 | 1 1 0 0 = 0x1c // 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 0 0 0 0 | 1 1 1 1 | 1 1 1 1 = (0x1f << 3) | (0x1c >> 2)
Probably a typo, but there is an error in the Argb code computation, some bits should be shifted but are not.