| 1 | #include "../pico_int.h" |
| 2 | |
| 3 | static void convert_pal555(void) |
| 4 | { |
| 5 | unsigned int *ps = (void *)Pico32xMem->pal; |
| 6 | unsigned int *pd = (void *)Pico32xMem->pal_native; |
| 7 | unsigned int m1 = 0x001f001f; |
| 8 | unsigned int m2 = 0x03e003e0; |
| 9 | unsigned int m3 = 0xfc00fc00; |
| 10 | int i; |
| 11 | |
| 12 | // place prio to LS green bit |
| 13 | for (i = 0x100/2; i > 0; i--, ps++, pd++) { |
| 14 | unsigned int t = *ps; |
| 15 | *pd = ((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10); |
| 16 | } |
| 17 | |
| 18 | Pico32x.dirty_pal = 0; |
| 19 | } |
| 20 | |
| 21 | void FinalizeLine32xRGB555(int sh, int line) |
| 22 | { |
| 23 | unsigned short *pd = DrawLineDest; |
| 24 | unsigned short *pal = Pico32xMem->pal_native; |
| 25 | unsigned char *pb = HighCol + 8; |
| 26 | unsigned short cram0; |
| 27 | |
| 28 | // this is a bit hackish: |
| 29 | // we swap cram color 0 with color that is used for background, |
| 30 | // as bg is forced to 0 when we do 32X |
| 31 | cram0 = Pico.cram[0]; |
| 32 | Pico.cram[0] = Pico.cram[Pico.video.reg[7] & 0x3f]; |
| 33 | |
| 34 | FinalizeLineRGB555(sh, line); |
| 35 | Pico.cram[0] = cram0; |
| 36 | |
| 37 | if ((Pico32x.vdp_regs[0] & 3) == 0) |
| 38 | return; // blanking |
| 39 | |
| 40 | if (Pico32x.dirty_pal) |
| 41 | convert_pal555(); |
| 42 | |
| 43 | if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) { |
| 44 | unsigned short *dram = (void *)Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS]; |
| 45 | unsigned short *ps = dram + dram[line]; |
| 46 | unsigned short t; |
| 47 | int i; |
| 48 | for (i = 320/2; i > 0; i--, ps++, pd += 2, pb += 2) { |
| 49 | t = pal[*ps >> 8]; |
| 50 | if (pb[0] == 0 || (t & 0x20)) |
| 51 | pd[0] = t; |
| 52 | t = pal[*ps & 0xff]; |
| 53 | if (pb[1] == 0 || (t & 0x20)) |
| 54 | pd[1] = t; |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |