/* * PicoDrive * (C) notaz, 2009,2010 * * This work is licensed under the terms of MAME license. * See COPYING file in the top-level directory. */ #include "../pico_int.h" int (*PicoScan32xBegin)(unsigned int num); int (*PicoScan32xEnd)(unsigned int num); int Pico32xDrawMode; static void convert_pal555(int invert_prio) { unsigned int *ps = (void *)Pico32xMem->pal; unsigned int *pd = (void *)Pico32xMem->pal_native; unsigned int m1 = 0x001f001f; unsigned int m2 = 0x03e003e0; unsigned int m3 = 0xfc00fc00; unsigned int inv = 0; int i; if (invert_prio) inv = 0x00200020; // place prio to LS green bit for (i = 0x100/2; i > 0; i--, ps++, pd++) { unsigned int t = *ps; *pd = (((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10)) ^ inv; } Pico32x.dirty_pal = 0; } // direct color mode #define do_line_dc(pd, p32x, pmd, inv, pmd_draw_code) \ { \ const unsigned int m1 = 0x001f; \ const unsigned int m2 = 0x03e0; \ const unsigned int m3 = 0x7c00; \ int i; \ \ for (i = 320; i > 0; i--, pd++, p32x++, pmd++) { \ unsigned short t = *p32x; \ if ((*pmd & 0x3f) != mdbg && !((t ^ inv) & 0x8000)) { \ pmd_draw_code; \ continue; \ } \ \ *pd = ((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10); \ } \ } // packed pixel mode #define do_line_pp(pd, p32x, pmd, pmd_draw_code) \ { \ unsigned short t; \ int i; \ for (i = 320; i > 0; i--, pd++, p32x++, pmd++) { \ t = pal[*(unsigned char *)((long)p32x ^ 1)]; \ if ((t & 0x20) || (*pmd & 0x3f) == mdbg) \ *pd = t; \ else \ pmd_draw_code; \ } \ } // run length mode #define do_line_rl(pd, p32x, pmd, pmd_draw_code) \ { \ unsigned short len, t; \ int i; \ for (i = 320; i > 0; p32x++) { \ t = pal[*p32x & 0xff]; \ for (len = (*p32x >> 8) + 1; len > 0 && i > 0; len--, i--, pd++, pmd++) { \ if ((*pmd & 0x3f) == mdbg || (t & 0x20)) \ *pd = t; \ else \ pmd_draw_code; \ } \ } \ } // this is almost never used (Wiz and menu bg gen only) void FinalizeLine32xRGB555(int sh, int line) { unsigned short *pd = DrawLineDest; unsigned short *pal = Pico32xMem->pal_native; unsigned char *pmd = HighCol + 8; unsigned short *dram, *p32x; unsigned char mdbg; FinalizeLine555(sh, line); if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 0 || // 32x blanking // XXX: how is 32col mode hadled by real hardware? !(Pico.video.reg[12] & 1) || // 32col mode !(PicoDrawMask & PDRAW_32X_ON)) { return; } dram = (void *)Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS]; p32x = dram + dram[line]; mdbg = Pico.video.reg[7] & 0x3f; if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 2) { // Direct Color Mode int inv_bit = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0; do_line_dc(pd, p32x, pmd, inv_bit,); return; } if (Pico32x.dirty_pal) convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI); if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) { // Packed Pixel Mode unsigned char *p32xb = (void *)p32x; if (Pico32x.vdp_regs[2 / 2] & P32XV_SFT) p32xb++; do_line_pp(pd, p32xb, pmd,); } else { // Run Length Mode do_line_rl(pd, p32x, pmd,); } } #define MD_LAYER_CODE \ *dst = palmd[*pmd] #define PICOSCAN_PRE \ PicoScan32xBegin(l + (lines_sft_offs & 0xff)); \ dst = DrawLineDest; \ #define PICOSCAN_POST \ PicoScan32xEnd(l + (lines_sft_offs & 0xff)); \ #define make_do_loop(name, pre_code, post_code, md_code) \ /* Direct Color Mode */ \ static void do_loop_dc##name(unsigned short *dst, \ unsigned short *dram, int lines_sft_offs, int mdbg) \ { \ int inv_bit = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0; \ unsigned char *pmd = PicoDraw2FB + \ 328 * (lines_sft_offs & 0xff) + 8; \ unsigned short *palmd = HighPal; \ unsigned short *p32x; \ int lines = lines_sft_offs >> 16; \ int l; \ (void)palmd; \ for (l = 0; l < lines; l++, pmd += 8) { \ pre_code; \ p32x = dram + dram[l]; \ do_line_dc(dst, p32x, pmd, inv_bit, md_code); \ post_code; \ } \ } \ \ /* Packed Pixel Mode */ \ static void do_loop_pp##name(unsigned short *dst, \ unsigned short *dram, int lines_sft_offs, int mdbg) \ { \ unsigned short *pal = Pico32xMem->pal_native; \ unsigned char *pmd = PicoDraw2FB + \ 328 * (lines_sft_offs & 0xff) + 8; \ unsigned short *palmd = HighPal; \ unsigned char *p32x; \ int lines = lines_sft_offs >> 16; \ int l; \ (void)palmd; \ for (l = 0; l < lines; l++, pmd += 8) { \ pre_code; \ p32x = (void *)(dram + dram[l]); \ p32x += (lines_sft_offs >> 8) & 1; \ do_line_pp(dst, p32x, pmd, md_code); \ post_code; \ } \ } \ \ /* Run Length Mode */ \ static void do_loop_rl##name(unsigned short *dst, \ unsigned short *dram, int lines_sft_offs, int mdbg) \ { \ unsigned short *pal = Pico32xMem->pal_native; \ unsigned char *pmd = PicoDraw2FB + \ 328 * (lines_sft_offs & 0xff) + 8; \ unsigned short *palmd = HighPal; \ unsigned short *p32x; \ int lines = lines_sft_offs >> 16; \ int l; \ (void)palmd; \ for (l = 0; l < lines; l++, pmd += 8) { \ pre_code; \ p32x = dram + dram[l]; \ do_line_rl(dst, p32x, pmd, md_code); \ post_code; \ } \ } #ifdef _ASM_32X_DRAW #undef make_do_loop #define make_do_loop(name, pre_code, post_code, md_code) \ extern void do_loop_dc##name(unsigned short *dst, \ unsigned short *dram, int lines_offs, int mdbg); \ extern void do_loop_pp##name(unsigned short *dst, \ unsigned short *dram, int lines_offs, int mdbg); \ extern void do_loop_rl##name(unsigned short *dst, \ unsigned short *dram, int lines_offs, int mdbg); #endif make_do_loop(,,,) make_do_loop(_md, , , MD_LAYER_CODE) make_do_loop(_scan, PICOSCAN_PRE, PICOSCAN_POST, ) make_do_loop(_scan_md, PICOSCAN_PRE, PICOSCAN_POST, MD_LAYER_CODE) typedef void (*do_loop_func)(unsigned short *dst, unsigned short *dram, int lines, int mdbg); enum { DO_LOOP, DO_LOOP_MD, DO_LOOP_SCAN, DO_LOOP_MD_SCAN }; static const do_loop_func do_loop_dc_f[] = { do_loop_dc, do_loop_dc_md, do_loop_dc_scan, do_loop_dc_scan_md }; static const do_loop_func do_loop_pp_f[] = { do_loop_pp, do_loop_pp_md, do_loop_pp_scan, do_loop_pp_scan_md }; static const do_loop_func do_loop_rl_f[] = { do_loop_rl, do_loop_rl_md, do_loop_rl_scan, do_loop_rl_scan_md }; void PicoDraw32xLayer(int offs, int lines, int md_bg) { int have_scan = PicoScan32xBegin != NULL && PicoScan32xEnd != NULL; const do_loop_func *do_loop; unsigned short *dram; int lines_sft_offs; int which_func; DrawLineDest = (char *)DrawLineDestBase + offs * DrawLineDestIncrement; dram = Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS]; if (Pico32xDrawMode == PDM32X_BOTH) { if (Pico.m.dirtyPal) PicoDrawUpdateHighPal(); } if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 2) { // Direct Color Mode do_loop = do_loop_dc_f; goto do_it; } if (Pico32x.dirty_pal) convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI); if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) { // Packed Pixel Mode do_loop = do_loop_pp_f; } else { // Run Length Mode do_loop = do_loop_rl_f; } do_it: if (Pico32xDrawMode == PDM32X_BOTH) which_func = have_scan ? DO_LOOP_MD_SCAN : DO_LOOP_MD; else which_func = have_scan ? DO_LOOP_SCAN : DO_LOOP; lines_sft_offs = (lines << 16) | offs; if (Pico32x.vdp_regs[2 / 2] & P32XV_SFT) lines_sft_offs |= 1 << 8; do_loop[which_func](DrawLineDest, dram, lines_sft_offs, md_bg); } // mostly unused, games tend to keep 32X layer on void PicoDraw32xLayerMdOnly(int offs, int lines) { int have_scan = PicoScan32xBegin != NULL && PicoScan32xEnd != NULL; unsigned short *dst = (void *)((char *)DrawLineDestBase + offs * DrawLineDestIncrement); unsigned char *pmd = PicoDraw2FB + 328 * offs + 8; unsigned short *pal = HighPal; int poffs = 0, plen = 320; int l, p; if (!(Pico.video.reg[12] & 1)) { // 32col mode poffs = 32; plen = 256; } if (Pico.m.dirtyPal) PicoDrawUpdateHighPal(); dst += poffs; for (l = 0; l < lines; l++) { if (have_scan) { PicoScan32xBegin(l + offs); dst = DrawLineDest + poffs; } for (p = 0; p < plen; p += 4) { dst[p + 0] = pal[*pmd++]; dst[p + 1] = pal[*pmd++]; dst[p + 2] = pal[*pmd++]; dst[p + 3] = pal[*pmd++]; } dst = (void *)((char *)dst + DrawLineDestIncrement); pmd += 328 - plen; if (have_scan) PicoScan32xEnd(l + offs); } } void PicoDrawSetOutFormat32x(pdso_t which, int use_32x_line_mode) { #ifdef _ASM_32X_DRAW extern void *Pico32xNativePal; Pico32xNativePal = Pico32xMem->pal_native; #endif if (which == PDF_RGB555 && use_32x_line_mode) { // we'll draw via FinalizeLine32xRGB555 (rare) PicoDrawSetInternalBuf(NULL, 0); Pico32xDrawMode = PDM32X_OFF; return; } // use the same layout as alt renderer PicoDrawSetInternalBuf(PicoDraw2FB, 328); Pico32xDrawMode = (which == PDF_RGB555) ? PDM32X_32X_ONLY : PDM32X_BOTH; } // vim:shiftwidth=2:ts=2:expandtab