/* * line renderer * (c) Copyright Dave, 2004 * (C) notaz, 2006-2010 * (C) kub, 2019-2020 * * This work is licensed under the terms of MAME license. * See COPYING file in the top-level directory. */ /* * The renderer has 4 modes now: * - normal * - shadow/hilight (s/h) * - "sonic mode" for midline palette changes (8bit mode only) * - accurate sprites (AS) [+ s/h] * * s/h uses upper bits for both priority and shadow/hilight flags. * "sonic mode" is autodetected, shadow/hilight is enabled by emulated game. * AS is enabled by user and takes priority over "sonic mode". * * since renderer always draws line in 8bit mode, there are 2 spare bits: * b \ mode: s/h sonic * 00 normal pal index * 01 hilight pal index * 10 shadow pal index * 11 hilight|shadow=normal pal index * * sprite s/h can only be correctly done after the plane rendering s/h state is * known since the s/h result changes if there's at least one high prio plane. * sprite op rendering is deferred until this is known, and hilight is used as * mark since it can't occur before sprite ops: * x1 op marker pal index * * low prio s/h rendering: * - plane and non-op sprite pixels have shadow * - s/h sprite op pixel rendering is marked with hilight (deferred) * high prio s/h rendering: * - plane and non-op sprite pixels are normal * - all s/h sprite op pixels (either marked or high prio) are rendered * * not handled properly: * - high prio s/h sprite op overlapping low prio sprite shows sprite, not A,B,G * - in debug sprite-masked, transparent high-prio sprite px don't remove shadow */ #include "pico_int.h" #include #define FORCE // layer forcing via debug register? int (*PicoScanBegin)(unsigned int num) = NULL; int (*PicoScanEnd) (unsigned int num) = NULL; static unsigned char DefHighCol[8+320+8]; unsigned char *HighColBase = DefHighCol; int HighColIncrement; static u16 DefOutBuff[320*2] ALIGNED(4); void *DrawLineDestBase = DefOutBuff; int DrawLineDestIncrement; static u32 HighCacheA[41*2+1]; // caches for high layers static u32 HighCacheB[41*2+1]; static s32 HighPreSpr[80*2+1]; // slightly preprocessed sprites u32 VdpSATCache[128]; // VDP sprite cache (1st 32 sprite attr bits) // NB don't change any defines without checking their usage in ASM #if defined(USE_BGR555) #define PXCONV(t) ((t & 0x000e000e)<< 1) | ((t & 0x00e000e0)<<2) | ((t & 0x0e000e00)<<3) #define PXMASKL 0x04210421 // 0x0c630c63, LSB for all colours #define PXMASKH 0x39ce39ce // 0x3def3def, all but MSB for all colours #elif defined(USE_BGR565) #define PXCONV(t) ((t & 0x000e000e)<< 1) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)<<4) #define PXMASKL 0x08610861 // 0x18e318e3 #define PXMASKH 0x738e738e // 0x7bef7bef #else // RGB565 #define PXCONV(t) ((t & 0x000e000e)<<12) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)>>7) #define PXMASKL 0x08610861 // 0x18e318e3 #define PXMASKH 0x738e738e // 0x7bef7bef #endif #define LF_PLANE (1 << 0) // must be = 1 #define LF_SH (1 << 1) // must be = 2 //#define LF_FORCE (1 << 2) #define LF_PLANE_A 0 #define LF_PLANE_B 1 #define SPRL_HAVE_HI 0x80 // have hi priority sprites #define SPRL_HAVE_LO 0x40 // *lo* #define SPRL_MAY_HAVE_OP 0x20 // may have operator sprites on the line #define SPRL_LO_ABOVE_HI 0x10 // low priority sprites may be on top of hi #define SPRL_HAVE_X 0x08 // have sprites with x != 0 #define SPRL_TILE_OVFL 0x04 // tile limit exceeded on previous line #define SPRL_HAVE_MASK0 0x02 // have sprite with x == 0 in 1st slot #define SPRL_MASKED 0x01 // lo prio masking by sprite with x == 0 active unsigned char HighLnSpr[240][4+MAX_LINE_SPRITES+1]; // sprite_count, ^flags, tile_count, sprites_total, [spritep]..., last_width int rendstatus_old; int rendlines; static int skip_next_line=0; struct TileStrip { int nametab; // Position in VRAM of name table (for this tile line) int line; // Line number in pixels 0x000-0x3ff within the virtual tilemap int hscroll; // Horizontal scroll value in pixels for the line int xmask; // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap u32 *hc; // cache for high tile codes and their positions int cells; // cells (tiles) to draw (32 col mode doesn't need to update whole 320) }; // stuff available in asm: #ifdef _ASM_DRAW_C void DrawWindow(int tstart, int tend, int prio, int sh, struct PicoEState *est); void DrawAllSprites(unsigned char *sprited, int prio, int sh, struct PicoEState *est); void DrawTilesFromCache(u32 *hc, int sh, int rlim, struct PicoEState *est); void DrawSpritesSHi(unsigned char *sprited, struct PicoEState *est); void DrawLayer(int plane_sh, u32 *hcache, int cellskip, int maxcells, struct PicoEState *est); void *blockcpy(void *dst, const void *src, size_t n); void blockcpy_or(void *dst, void *src, size_t n, int pat); #else // utility void blockcpy_or(void *dst, void *src, size_t n, int pat) { unsigned char *pd = dst, *ps = src; for (; n; n--) *pd++ = (unsigned char) (*ps++ | pat); } #define blockcpy memmove #endif #define TileNormMaker_(pix_func,ret) \ { \ unsigned char t; \ \ t = (pack&0x0000f000)>>12; pix_func(0); \ t = (pack&0x00000f00)>> 8; pix_func(1); \ t = (pack&0x000000f0)>> 4; pix_func(2); \ t = (pack&0x0000000f) ; pix_func(3); \ t = (pack&0xf0000000)>>28; pix_func(4); \ t = (pack&0x0f000000)>>24; pix_func(5); \ t = (pack&0x00f00000)>>20; pix_func(6); \ t = (pack&0x000f0000)>>16; pix_func(7); \ return ret; \ } #define TileFlipMaker_(pix_func,ret) \ { \ unsigned char t; \ \ t = (pack&0x000f0000)>>16; pix_func(0); \ t = (pack&0x00f00000)>>20; pix_func(1); \ t = (pack&0x0f000000)>>24; pix_func(2); \ t = (pack&0xf0000000)>>28; pix_func(3); \ t = (pack&0x0000000f) ; pix_func(4); \ t = (pack&0x000000f0)>> 4; pix_func(5); \ t = (pack&0x00000f00)>> 8; pix_func(6); \ t = (pack&0x0000f000)>>12; pix_func(7); \ return ret; \ } #define TileNormMaker(funcname, pix_func) \ static void funcname(unsigned char *pd, unsigned int pack, unsigned char pal) \ TileNormMaker_(pix_func,) #define TileFlipMaker(funcname, pix_func) \ static void funcname(unsigned char *pd, unsigned int pack, unsigned char pal) \ TileFlipMaker_(pix_func,) #define TileNormMakerAS(funcname, pix_func) \ static unsigned funcname(unsigned m, unsigned char *pd, unsigned int pack, unsigned char pal) \ TileNormMaker_(pix_func,m) #define TileFlipMakerAS(funcname, pix_func) \ static unsigned funcname(unsigned m, unsigned char *pd, unsigned int pack, unsigned char pal) \ TileFlipMaker_(pix_func,m) // draw layer or non-s/h sprite pixels (no operator colors) #define pix_just_write(x) \ if (likely(t)) pd[x]=pal|t TileNormMaker(TileNorm, pix_just_write) TileFlipMaker(TileFlip, pix_just_write) #ifndef _ASM_DRAW_C // draw low prio sprite non-s/h pixels in s/h mode #define pix_nonsh(x) \ if (likely(t)) { \ pd[x]=pal|t; \ if (unlikely(t==0xe)) pd[x]&=~0x80; /* disable shadow for color 14 (hw bug?) */ \ } TileNormMaker(TileNormNonSH, pix_nonsh) TileFlipMaker(TileFlipNonSH, pix_nonsh) // draw sprite pixels, process operator colors #define pix_sh(x) \ if (likely(t)) \ pd[x]=(likely(t<0xe) ? pal|t : pd[x]|((t-1)<<6)) TileNormMaker(TileNormSH, pix_sh) TileFlipMaker(TileFlipSH, pix_sh) // draw sprite pixels, mark but don't process operator colors #define pix_sh_markop(x) \ if (likely(t)) \ pd[x]=(likely(t<0xe) ? pal|t : pd[x]|0x40) TileNormMaker(TileNormSH_markop, pix_sh_markop) TileFlipMaker(TileFlipSH_markop, pix_sh_markop) #endif // draw low prio sprite operator pixels if visible (i.e. marked) #define pix_sh_onlyop(x) \ if (unlikely(t>=0xe && (pd[x]&0x40))) \ pd[x]=(pd[x]&~0x40)|((t-1)<<6) #ifndef _ASM_DRAW_C TileNormMaker(TileNormSH_onlyop_lp, pix_sh_onlyop) TileFlipMaker(TileFlipSH_onlyop_lp, pix_sh_onlyop) #endif // AS: sprite mask bits in m shifted to bits 8-15, see DrawSpritesHiAS // draw high prio sprite pixels (AS) #define pix_as(x) \ if (likely(t && (m & (1<<(x+8))))) \ m &= ~(1<<(x+8)), pd[x] = pal|t TileNormMakerAS(TileNormAS, pix_as) TileFlipMakerAS(TileFlipAS, pix_as) // draw high prio sprite pixels, process operator colors (AS) // NB sprite+planes: h+s->n, h+[nh]->h, s+[nhs]->s, hence mask h before op #define pix_sh_as(x) \ if (likely(t && (m & (1<<(x+8))))) { \ m &= ~(1<<(x+8)); \ pd[x]=(likely(t<0xe) ? pal|t : (pd[x]&~0x40)|((t-1)<<6)); \ } TileNormMakerAS(TileNormSH_AS, pix_sh_as) TileFlipMakerAS(TileFlipSH_AS, pix_sh_as) // draw only sprite operator pixels (AS) #define pix_sh_as_onlyop(x) \ if (likely(t && (m & (1<<(x+8))))) { \ m &= ~(1<<(x+8)); \ pix_sh_onlyop(x); \ } TileNormMakerAS(TileNormSH_AS_onlyop_lp, pix_sh_as_onlyop) TileFlipMakerAS(TileFlipSH_AS_onlyop_lp, pix_sh_as_onlyop) // mark low prio sprite pixels (AS) #define pix_sh_as_onlymark(x) \ if (likely(t)) m &= ~(1<<(x+8)) TileNormMakerAS(TileNormAS_onlymark, pix_sh_as_onlymark) TileFlipMakerAS(TileFlipAS_onlymark, pix_sh_as_onlymark) #ifdef FORCE // NB s/h already resolved by non-forced drawing // forced both layer draw (through debug reg) #define pix_and(x) \ pal |= 0xc0; /* leave s/h bits untouched in pixel "and" */ \ pd[x] &= pal|t TileNormMaker(TileNorm_and, pix_and) TileFlipMaker(TileFlip_and, pix_and) // forced sprite draw (through debug reg) #define pix_sh_as_and(x) \ pal |= 0xc0; /* leave s/h bits untouched in pixel "and" */ \ if (likely(m & (1<<(x+8)))) { \ m &= ~(1<<(x+8)); \ if (t<0xe) pd[x] &= pal|t; \ } TileNormMakerAS(TileNormSH_AS_and, pix_sh_as_and) TileFlipMakerAS(TileFlipSH_AS_and, pix_sh_as_and) #endif // -------------------------------------------- #ifndef _ASM_DRAW_C static void DrawStrip(struct TileStrip *ts, int lflags, int cellskip) { unsigned char *pd = Pico.est.HighCol; u32 *hc = ts->hc; int tilex, dx, ty, cells; u32 pack = 0, oldcode = -1, blank = -1; // The tile we know is blank unsigned int pal = 0, sh; // Draw tiles across screen: sh = (lflags & LF_SH) << 6; // shadow tilex=((-ts->hscroll)>>3)+cellskip; ty=(ts->line&7)<<1; // Y-Offset into tile dx=((ts->hscroll-1)&7)+1; cells = ts->cells - cellskip; if(dx != 8) cells++; // have hscroll, need to draw 1 cell more dx+=cellskip<<3; // int force = (lflags&LF_FORCE) << 13; for (; cells > 0; dx+=8, tilex++, cells--) { u32 code = PicoMem.vram[ts->nametab + (tilex & ts->xmask)]; // code &= ~force; // forced always draw everything if (code == blank && !((code & 0x8000) && sh)) continue; if (code!=oldcode) { oldcode = code; pack = 0; if (code != blank) { // Get tile address/2: u32 addr = ((code&0x7ff)<<4) + ty; if (code & 0x1000) addr ^= 0xe; // Y-flip pal = ((code>>9)&0x30) | sh; // shadow pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr)); if (!pack) blank = code; } } if (code & 0x8000) { // (un-forced) high priority tile code |= (dx<<16) | (ty<<25); if (code & 0x1000) code ^= 0xe<<25; *hc++ = code, *hc++ = pack; // cache it } else if (code != blank) { if (code & 0x0800) TileFlip(pd + dx, pack, pal); else TileNorm(pd + dx, pack, pal); } } // terminate the cache list *hc = 0; // if oldcode wasn't changed, it means all layer is hi priority if (oldcode == -1) Pico.est.rendstatus |= PDRAW_PLANE_HI_PRIO; } // this is messy static void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip) { unsigned char *pd = Pico.est.HighCol; u32 *hc = ts->hc; int tilex, dx, ty = 0, addr = 0, cell = 0, nametabadd = 0; u32 oldcode = -1, blank = -1; // The tile we know is blank unsigned int pal = 0, scan = Pico.est.DrawScanline, sh, plane; // Draw tiles across screen: sh = (plane_sh & LF_SH) << 6; // shadow plane = (plane_sh & LF_PLANE); // plane to draw tilex=(-ts->hscroll)>>3; dx=((ts->hscroll-1)&7)+1; if (ts->hscroll & 0x0f) { int adj = ((ts->hscroll ^ dx) >> 3) & 1; cell -= adj + 1; ts->cells -= adj; PicoMem.vsram[0x3e] = PicoMem.vsram[0x3f] = plane_sh >> 16; } cell+=cellskip; tilex+=cellskip; dx+=cellskip<<3; // int force = (plane_sh&LF_FORCE) << 13; if ((cell&1)==1) { int line,vscroll; vscroll = PicoMem.vsram[plane + (cell&0x3e)]; // Find the line in the name table line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask .. nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width] ty=(line&7)<<1; // Y-Offset into tile } for (; cell < ts->cells; dx+=8,tilex++,cell++) { u32 code, pack; if ((cell&1)==0) { int line,vscroll; vscroll = PicoMem.vsram[plane + (cell&0x3e)]; // Find the line in the name table line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask .. nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width] ty=(line&7)<<1; // Y-Offset into tile } code= PicoMem.vram[ts->nametab + nametabadd + (tilex & ts->xmask)]; // code &= ~force; // forced always draw everything code |= ty<<25; // add ty since that can change pixel row for every 2nd tile if (code == blank && !((code & 0x8000) && sh)) continue; if (code!=oldcode) { oldcode = code; // Get tile address/2: addr = (code&0x7ff)<<4; pal = ((code>>9)&0x30) | sh; // shadow } pack = (code & 0x1000 ? ty^0xe : ty); // Y-flip pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr+pack)); if (!pack) blank = code; if (code & 0x8000) { // (un-forced) high priority tile code |= (dx<<16); if (code & 0x1000) code ^= 0xe<<25; *hc++ = code, *hc++ = pack; // cache it } else if (code != blank) { if (code & 0x0800) TileFlip(pd + dx, pack, pal); else TileNorm(pd + dx, pack, pal); } } // terminate the cache list *hc = 0; if (oldcode == -1) Pico.est.rendstatus |= PDRAW_PLANE_HI_PRIO; } #endif #ifndef _ASM_DRAW_C static #endif void DrawStripInterlace(struct TileStrip *ts, int plane_sh) { unsigned char *pd = Pico.est.HighCol; u32 *hc = ts->hc; int tilex = 0, dx = 0, ty = 0, cells; u32 oldcode = -1, blank = -1; // The tile we know is blank unsigned int pal = 0, pack = 0, sh; // Draw tiles across screen: sh = (plane_sh & LF_SH) << 6; // shadow tilex=(-ts->hscroll)>>3; ty=(ts->line&15)<<1; // Y-Offset into tile dx=((ts->hscroll-1)&7)+1; cells = ts->cells; if(dx != 8) cells++; // have hscroll, need to draw 1 cell more // int force = (plane_sh&LF_FORCE) << 13; for (; cells; dx+=8,tilex++,cells--) { u32 code = PicoMem.vram[ts->nametab + (tilex & ts->xmask)]; // code &= ~force; // forced always draw everything if (code == blank && !(code & 0x8000)) continue; if (code!=oldcode) { oldcode = code; pack = 0; if (code != blank) { // Get tile address/2: u32 addr = ((code&0x3ff)<<5) + ty; if (code & 0x1000) addr ^= 0x1e; // Y-flip pal = ((code>>9)&0x30) | sh; // shadow pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr)); if (!pack) blank = code; } } if (code & 0x8000) { // high priority tile if ((plane_sh&LF_SH) | (code!=blank)) { code = (code&0xfc00) | ((code&0x3ff)<<1) | (dx<<16) | (ty<<25); if (code & 0x1000) code ^= 0x1e<<25; *hc++ = code, *hc++ = pack; // cache it } continue; } else if (code != blank) { if (code & 0x0800) TileFlip(pd + dx, pack, pal); else TileNorm(pd + dx, pack, pal); } } // terminate the cache list *hc = 0; } // -------------------------------------------- #ifndef _ASM_DRAW_C static void DrawLayer(int plane_sh, u32 *hcache, int cellskip, int maxcells, struct PicoEState *est) { struct PicoVideo *pvid=&Pico.video; const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid) struct TileStrip ts; int width, height, ymask; int vscroll, htab; ts.hc=hcache; ts.cells=maxcells; // Work out the TileStrip to draw // Work out the name table size: 32 64 or 128 tiles (0-3) width=pvid->reg[16]; height=(width>>4)&3; width&=3; ts.xmask=(1<reg[4]&0x07)<<12; // B else ts.nametab=(pvid->reg[2]&0x38)<< 9; // A htab=pvid->reg[13]<<9; // Horizontal scroll table address switch (pvid->reg[11]&3) { case 1: htab += (est->DrawScanline<<1) & 0x0f; break; case 2: htab += (est->DrawScanline<<1) & ~0x0f; break; // Offset by tile case 3: htab += (est->DrawScanline<<1); break; // Offset by line } htab+=plane_sh&LF_PLANE; // A or B // Get horizontal scroll value, will be masked later ts.hscroll = PicoMem.vram[htab & 0x7fff]; if((pvid->reg[12]&6) == 6) { // interlace mode 2 vscroll = PicoMem.vsram[plane_sh&LF_PLANE]; // Get vertical scroll value // Find the line in the name table ts.line=(vscroll+(est->DrawScanline<<1))&((ymask<<1)|1); ts.nametab+=(ts.line>>4)<reg[11]&4) { // shit, we have 2-cell column based vscroll // luckily this doesn't happen too often ts.line=ymask|(shift[width]<<24); // save some stuff instead of line // vscroll value for leftmost cells in case of hscroll not on 16px boundary // XXX it's unclear what exactly the hw is doing. Continue reading where it // stopped last seems to work best (H40: 0x50 (wrap->0x00), H32 0x40). plane_sh |= PicoMem.vsram[(pvid->reg[12]&1?0x00:0x20) + (plane_sh&LF_PLANE)] << 16; DrawStripVSRam(&ts, plane_sh, cellskip); } else { vscroll = PicoMem.vsram[plane_sh&LF_PLANE]; // Get vertical scroll value // Find the line in the name table ts.line=(vscroll+est->DrawScanline)&ymask; ts.nametab+=(ts.line>>3)<reg[12]&1) { nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode nametab+=(est->DrawScanline>>3)<<6; } else { nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode nametab+=(est->DrawScanline>>3)<<5; } tilex=tstart<<1; if (prio && !(est->rendstatus & PDRAW_WND_DIFF_PRIO)) { // all tiles processed in low prio pass return; } tend<<=1; ty=(est->DrawScanline&7)<<1; // Y-Offset into tile // Draw tiles across screen: if (!sh) { for (; tilex < tend; tilex++) { unsigned int pack; int dx, addr; int pal; code = PicoMem.vram[nametab + tilex]; if ((code>>15) != prio) { est->rendstatus |= PDRAW_WND_DIFF_PRIO; continue; } if (code==blank) continue; // Get tile address/2: addr=(code&0x7ff)<<4; if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr)); if (!pack) { blank = code; continue; } pal = ((code >> 9) & 0x30); dx = 8 + (tilex << 3); if (code & 0x0800) TileFlip(pd + dx, pack, pal); else TileNorm(pd + dx, pack, pal); } } else { for (; tilex < tend; tilex++) { unsigned int pack; int dx, addr; int pal; code = PicoMem.vram[nametab + tilex]; if((code>>15) != prio) { est->rendstatus |= PDRAW_WND_DIFF_PRIO; continue; } pal=((code>>9)&0x30); if (prio) { int *zb = (int *)(est->HighCol+8+(tilex<<3)); *zb++ &= 0x7f7f7f7f; *zb &= 0x7f7f7f7f; } else { pal |= 0x80; } if(code==blank) continue; // Get tile address/2: addr=(code&0x7ff)<<4; if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr)); if (!pack) { blank = code; continue; } dx = 8 + (tilex << 3); if (code & 0x0800) TileFlip(pd + dx, pack, pal); else TileNorm(pd + dx, pack, pal); } } } // -------------------------------------------- static void DrawTilesFromCacheShPrep(void) { // as some layer has covered whole line with hi priority tiles, // we can process whole line and then act as if sh/hi mode was off, // but leave lo pri op sprite markers alone int c = 320/4, *zb = (int *)(Pico.est.HighCol+8); Pico.est.rendstatus |= PDRAW_SHHI_DONE; while (c--) { *zb++ &= 0x7f7f7f7f; } } static void DrawTilesFromCache(u32 *hc, int sh, int rlim, struct PicoEState *est) { unsigned char *pd = Pico.est.HighCol; u32 code, dx; u32 pack; int pal; // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it if (sh && (est->rendstatus & (PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO))) { if (!(est->rendstatus & PDRAW_SHHI_DONE)) DrawTilesFromCacheShPrep(); sh = 0; } if (!sh) { while ((code=*hc++)) { pack = *hc++; if (!pack) continue; dx = (code >> 16) & 0x1ff; pal = ((code >> 9) & 0x30); if (rlim-dx < 0) goto last_cut_tile; if (code & 0x0800) TileFlip(pd + dx, pack, pal); else TileNorm(pd + dx, pack, pal); } } else { while ((code=*hc++)) { unsigned char *zb; dx = (code >> 16) & 0x1ff; zb = est->HighCol+dx; *zb++ &= 0x7f; *zb++ &= 0x7f; *zb++ &= 0x7f; *zb++ &= 0x7f; *zb++ &= 0x7f; *zb++ &= 0x7f; *zb++ &= 0x7f; *zb++ &= 0x7f; pack = *hc++; if (!pack) continue; pal = ((code >> 9) & 0x30); if (rlim - dx < 0) goto last_cut_tile; if (code & 0x0800) TileFlip(pd + dx, pack, pal); else TileNorm(pd + dx, pack, pal); } } return; last_cut_tile: // for vertical window cutoff { unsigned int t; pd += dx; if (code&0x0800) { switch (rlim-dx+8) { case 7: t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8)); // "break" is left out intentionally case 6: t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4)); case 5: t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t )); case 4: t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28)); case 3: t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24)); case 2: t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20)); case 1: t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16)); default: break; } } else { switch (rlim-dx+8) { case 7: t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20)); case 6: t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24)); case 5: t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28)); case 4: t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t )); case 3: t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4)); case 2: t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8)); case 1: t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12)); default: break; } } } } // -------------------------------------------- // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8 static void DrawSprite(s32 *sprite, int sh, int w) { void (*fTileFunc)(unsigned char *pd, unsigned int pack, unsigned char pal); unsigned char *pd = Pico.est.HighCol; int width=0,height=0; int row=0; s32 code=0; int pal; int tile=0,delta=0; int sx, sy; // parse the sprite data sy=sprite[0]; code=sprite[1]; sx=code>>16; // X width=sy>>28; height=(sy>>24)&7; // Width and height in tiles sy=(sy<<16)>>16; // Y row=Pico.est.DrawScanline-sy; // Row of the sprite we are on if (code&0x1000) row=(height<<3)-1-row; // Flip Y tile=code + (row>>3); // Tile number increases going down delta=height; // Delta to increase tile by going right if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address delta<<=4; // Delta of address pal=(code>>9)&0x30; pal|=sh<<7; // shadow if (sh && (code&0x6000) == 0x6000) { if(code&0x0800) fTileFunc=TileFlipSH_markop; else fTileFunc=TileNormSH_markop; } else if (sh) { if(code&0x0800) fTileFunc=TileFlipNonSH; else fTileFunc=TileNormNonSH; } else { if(code&0x0800) fTileFunc=TileFlip; else fTileFunc=TileNorm; } if (w) width = w; // tile limit for (; width; width--,sx+=8,tile+=delta) { unsigned int pack; if(sx<=0) continue; if(sx>=328) break; // Offscreen pack = CPU_LE2(*(u32 *)(PicoMem.vram + (tile & 0x7fff))); fTileFunc(pd + sx, pack, pal); } } #endif static void DrawSpriteInterlace(u32 *sprite) { unsigned char *pd = Pico.est.HighCol; int width=0,height=0; int row=0,code=0; int pal; int tile=0,delta=0; int sx, sy; // parse the sprite data sy=CPU_LE2(sprite[0]); height=sy>>24; sy=(sy&0x3ff)-0x100; // Y width=(height>>2)&3; height&=3; width++; height++; // Width and height in tiles row=(Pico.est.DrawScanline<<1)-sy; // Row of the sprite we are on code=CPU_LE2(sprite[1]); sx=((code>>16)&0x1ff)-0x78; // X if (code&0x1000) row^=(16<>4; // Tile number increases going down delta=height; // Delta to increase tile by going right if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X tile<<=5; tile+=(row&15)<<1; // Tile address delta<<=5; // Delta of address pal=((code>>9)&0x30); // Get palette pointer for (; width; width--,sx+=8,tile+=delta) { unsigned int pack; if(sx<=0) continue; if(sx>=328) break; // Offscreen pack = CPU_LE2(*(u32 *)(PicoMem.vram + (tile & 0x7fff))); if (code & 0x0800) TileFlip(pd + sx, pack, pal); else TileNorm(pd + sx, pack, pal); } } static NOINLINE void DrawAllSpritesInterlace(int pri, int sh) { struct PicoVideo *pvid=&Pico.video; int i,u,table,link=0,sline=Pico.est.DrawScanline<<1; u32 *sprites[80]; // Sprite index int max_sprites = Pico.video.reg[12]&1 ? 80 : 64; table=pvid->reg[5]&0x7f; if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode table<<=8; // Get sprite table address/2 for (i = u = 0; u < max_sprites && link < max_sprites; u++) { u32 *sprite; int code, sx, sy, height; sprite=(u32 *)(PicoMem.vram+((table+(link<<2))&0x7ffc)); // Find sprite // get sprite info code = CPU_LE2(sprite[0]); sx = CPU_LE2(sprite[1]); if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite // check if it is on this line sy = (code&0x3ff)-0x100; height = (((code>>24)&3)+1)<<4; if((sline < sy) | (sline >= sy+height)) goto nextsprite; // no // check if sprite is not hidden offscreen sx = (sx>>16)&0x1ff; sx -= 0x78; // Get X coordinate + 8 if((sx <= -8*3) | (sx >= 328)) goto nextsprite; // sprite is good, save it's pointer sprites[i++]=sprite; nextsprite: // Find next sprite link=(code>>16)&0x7f; if(!link) break; // End of sprites } // Go through sprites backwards: for (i-- ;i>=0; i--) DrawSpriteInterlace(sprites[i]); } #ifndef _ASM_DRAW_C /* * s/h drawing: lo_layers|40, lo_sprites|40 && mark_op, * hi_layers&=~40, hi_sprites * * Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size * Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8 */ static void DrawSpritesSHi(unsigned char *sprited, const struct PicoEState *est) { static void (*tilefuncs[2][2][2])(unsigned char *, unsigned, unsigned char) = { { {NULL, NULL}, {TileNorm, TileFlip} }, { {TileNormSH_onlyop_lp, TileFlipSH_onlyop_lp}, {TileNormSH, TileFlipSH} } }; // [sh?][hi?][flip?] void (*fTileFunc)(unsigned char *pd, unsigned int pack, unsigned char pal); unsigned char *pd = Pico.est.HighCol; unsigned char *p; int cnt, w; cnt = sprited[0] & 0x7f; if (cnt == 0) return; p = &sprited[4]; if ((sprited[1] & (SPRL_TILE_OVFL|SPRL_HAVE_MASK0)) == (SPRL_TILE_OVFL|SPRL_HAVE_MASK0)) return; // masking effective due to tile overflow // Go through sprites backwards: w = p[cnt]; // possibly clipped width of last sprite for (cnt--; cnt >= 0; cnt--, w = 0) { s32 *sprite, code; int pal, tile, sx, sy; int offs, delta, width, height, row; offs = (p[cnt] & 0x7f) * 2; sprite = est->HighPreSpr + offs; code = sprite[1]; pal = (code>>9)&0x30; fTileFunc = tilefuncs[pal == 0x30][!!(code & 0x8000)][!!(code & 0x800)]; if (fTileFunc == NULL) continue; // non-operator low sprite, already drawn // parse remaining sprite data sy=sprite[0]; sx=code>>16; // X width=sy>>28; height=(sy>>24)&7; // Width and height in tiles sy=(sy<<16)>>16; // Y row=est->DrawScanline-sy; // Row of the sprite we are on if (code&0x1000) row=(height<<3)-1-row; // Flip Y tile=code + (row>>3); // Tile number increases going down delta=height; // Delta to increase tile by going right if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address delta<<=4; // Delta of address if (w) width = w; // tile limit for (; width; width--,sx+=8,tile+=delta) { unsigned int pack; if(sx<=0) continue; if(sx>=328) break; // Offscreen pack = CPU_LE2(*(u32 *)(PicoMem.vram + (tile & 0x7fff))); fTileFunc(pd + sx, pack, pal); } } } #endif // !_ASM_DRAW_C static void DrawSpritesHiAS(unsigned char *sprited, int sh) { static unsigned (*tilefuncs[2][2][2])(unsigned, unsigned char *, unsigned, unsigned char) = { { {TileNormAS_onlymark, TileFlipAS_onlymark}, {TileNormAS, TileFlipAS} }, { {TileNormSH_AS_onlyop_lp, TileFlipSH_AS_onlyop_lp}, {TileNormSH_AS, TileFlipSH_AS} } }; // [sh?][hi?][flip?] unsigned (*fTileFunc)(unsigned m, unsigned char *pd, unsigned int pack, unsigned char pal); unsigned char *pd = Pico.est.HighCol; unsigned char mb[sizeof(DefHighCol)/8]; unsigned char *p, *mp; unsigned m; int entry, cnt; cnt = sprited[0] & 0x7f; if (cnt == 0) return; memset(mb, 0xff, sizeof(mb)); p = &sprited[4]; if ((sprited[1] & (SPRL_TILE_OVFL|SPRL_HAVE_MASK0)) == (SPRL_TILE_OVFL|SPRL_HAVE_MASK0)) return; // masking effective due to tile overflow // Go through sprites: for (entry = 0; entry < cnt; entry++) { s32 *sprite, code; int pal, tile, sx, sy; int offs, delta, width, height, row; offs = (p[entry] & 0x7f) * 2; sprite = HighPreSpr + offs; code = sprite[1]; pal = (code>>9)&0x30; fTileFunc = tilefuncs[(sh && pal == 0x30)][!!(code&0x8000)][!!(code&0x800)]; // parse remaining sprite data sy=sprite[0]; sx=code>>16; // X width=sy>>28; height=(sy>>24)&7; // Width and height in tiles sy=(sy<<16)>>16; // Y row=Pico.est.DrawScanline-sy; // Row of the sprite we are on if (code&0x1000) row=(height<<3)-1-row; // Flip Y tile=code + (row>>3); // Tile number increases going down delta=height; // Delta to increase tile by going right if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address delta<<=4; // Delta of address if (entry+1 == cnt) width = p[entry+1]; // last sprite width limited? while (sx <= 0 && width) width--, sx+=8, tile+=delta; // Offscreen mp = mb+(sx>>3); for (m = *mp; width; width--, sx+=8, tile+=delta, *mp++ = m, m >>= 8) { unsigned int pack; if(sx>=328) break; // Offscreen pack = CPU_LE2(*(u32 *)(PicoMem.vram + (tile & 0x7fff))); m |= mp[1] << 8; // next mask byte // shift mask bits to bits 8-15 for easier load/store handling m = fTileFunc(m << (8-(sx&0x7)), pd + sx, pack, pal) >> (8-(sx&0x7)); } *mp = m; // write last mask byte } } #ifdef FORCE // NB lots of duplicate code, all for the sake of a small performance gain. static void DrawStripForced(struct TileStrip *ts, int cellskip) { unsigned char *pd = Pico.est.HighCol; int tilex, dx, ty, addr=0, cells; u32 code = 0, oldcode = -1; int pal = 0; // Draw tiles across screen: tilex=((-ts->hscroll)>>3)+cellskip; ty=(ts->line&7)<<1; // Y-Offset into tile dx=((ts->hscroll-1)&7)+1; cells = ts->cells - cellskip; if(dx != 8) cells++; // have hscroll, need to draw 1 cell more dx+=cellskip<<3; for (; cells > 0; dx+=8, tilex++, cells--) { u32 pack; code = PicoMem.vram[ts->nametab + (tilex & ts->xmask)]; if (code!=oldcode) { oldcode = code; // Get tile address/2: addr = ((code&0x7ff)<<4) + ty; if (code & 0x1000) addr^=0xe; // Y-flip pal = (code>>9)&0x30; } pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr)); if (code & 0x0800) TileFlip_and(pd + dx, pack, pal); else TileNorm_and(pd + dx, pack, pal); } } static void DrawStripVSRamForced(struct TileStrip *ts, int plane_sh, int cellskip) { unsigned char *pd = Pico.est.HighCol; int tilex, dx, ty=0, addr=0, cell=0, nametabadd=0; u32 code=0, oldcode=-1; int pal=0, scan=Pico.est.DrawScanline, plane; // Draw tiles across screen: plane = plane_sh & LF_PLANE; tilex=(-ts->hscroll)>>3; dx=((ts->hscroll-1)&7)+1; if (ts->hscroll & 0x0f) { int adj = ((ts->hscroll ^ dx) >> 3) & 1; cell -= adj + 1; ts->cells -= adj; PicoMem.vsram[0x3e] = PicoMem.vsram[0x3f] = plane_sh >> 16; } cell+=cellskip; tilex+=cellskip; dx+=cellskip<<3; if ((cell&1)==1) { int line,vscroll; vscroll = PicoMem.vsram[plane + (cell&0x3e)]; // Find the line in the name table line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask .. nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width] ty=(line&7)<<1; // Y-Offset into tile } for (; cell < ts->cells; dx+=8,tilex++,cell++) { unsigned int pack; if ((cell&1)==0) { int line,vscroll; vscroll = PicoMem.vsram[plane + (cell&0x3e)]; // Find the line in the name table line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask .. nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width] ty=(line&7)<<1; // Y-Offset into tile } code=PicoMem.vram[ts->nametab+nametabadd+(tilex&ts->xmask)]; if (code!=oldcode) { oldcode = code; // Get tile address/2: addr=(code&0x7ff)<<4; pal = (code>>9)&0x30; // shadow } pack = code & 0x1000 ? ty^0xe : ty; // Y-flip pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr+pack)); if (code & 0x0800) TileFlip_and(pd + dx, pack, pal); else TileNorm_and(pd + dx, pack, pal); } } void DrawStripInterlaceForced(struct TileStrip *ts) { unsigned char *pd = Pico.est.HighCol; int tilex = 0, dx = 0, ty = 0, cells; int oldcode = -1; unsigned int pal = 0, pack = 0; // Draw tiles across screen: tilex=(-ts->hscroll)>>3; ty=(ts->line&15)<<1; // Y-Offset into tile dx=((ts->hscroll-1)&7)+1; cells = ts->cells; if(dx != 8) cells++; // have hscroll, need to draw 1 cell more for (; cells; dx+=8,tilex++,cells--) { u32 code = PicoMem.vram[ts->nametab + (tilex & ts->xmask)]; if (code!=oldcode) { oldcode = code; // Get tile address/2: u32 addr = ((code&0x3ff)<<5) + ty; if (code & 0x1000) addr ^= 0x1e; // Y-flip pal = (code>>9)&0x30; // shadow pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr)); } if (code & 0x0800) TileFlip_and(pd + dx, pack, pal); else TileNorm_and(pd + dx, pack, pal); } } // XXX only duplicated to avoid ARM asm hassles static void DrawLayerForced(int plane_sh, int cellskip, int maxcells, struct PicoEState *est) { struct PicoVideo *pvid=&Pico.video; const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid) struct TileStrip ts; int width, height, ymask; int vscroll, htab; ts.cells=maxcells; // Work out the TileStrip to draw // Work out the name table size: 32 64 or 128 tiles (0-3) width=pvid->reg[16]; height=(width>>4)&3; width&=3; ts.xmask=(1<reg[4]&0x07)<<12; // B else ts.nametab=(pvid->reg[2]&0x38)<< 9; // A htab=pvid->reg[13]<<9; // Horizontal scroll table address switch (pvid->reg[11]&3) { case 1: htab += (est->DrawScanline<<1) & 0x0f; break; case 2: htab += (est->DrawScanline<<1) & ~0x0f; break; // Offset by tile case 3: htab += (est->DrawScanline<<1); break; // Offset by line } htab+=plane_sh&1; // A or B // Get horizontal scroll value, will be masked later ts.hscroll = PicoMem.vram[htab & 0x7fff]; if((pvid->reg[12]&6) == 6) { // interlace mode 2 vscroll = PicoMem.vsram[plane_sh & 1]; // Get vertical scroll value // Find the line in the name table ts.line=(vscroll+(est->DrawScanline<<1))&((ymask<<1)|1); ts.nametab+=(ts.line>>4)<reg[11]&4) { // shit, we have 2-cell column based vscroll // luckily this doesn't happen too often ts.line=ymask|(shift[width]<<24); // save some stuff instead of line // vscroll value for leftmost cells in case of hscroll not on 16px boundary // XXX it's unclear what exactly the hw is doing. Continue reading where it // stopped last seems to work best (H40: 0x50 (wrap->0x00), H32 0x40). plane_sh |= PicoMem.vsram[(pvid->reg[12]&1?0x00:0x20) + (plane_sh&1)] << 16; DrawStripVSRamForced(&ts, plane_sh, cellskip); } else { vscroll = PicoMem.vsram[plane_sh & 1]; // Get vertical scroll value // Find the line in the name table ts.line=(vscroll+est->DrawScanline)&ymask; ts.nametab+=(ts.line>>3)<>9)&0x30; if (code&0x800) fTileFunc = TileFlipSH_AS_and; else fTileFunc = TileNormSH_AS_and; // parse remaining sprite data sy=sprite[0]; sx=code>>16; // X width=sy>>28; height=(sy>>24)&7; // Width and height in tiles sy=(sy<<16)>>16; // Y row=Pico.est.DrawScanline-sy; // Row of the sprite we are on if (code&0x1000) row=(height<<3)-1-row; // Flip Y tile=code + (row>>3); // Tile number increases going down delta=height; // Delta to increase tile by going right if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address delta<<=4; // Delta of address if (entry+1 == cnt) width = p[entry+1]; // last sprite width limited? while (sx <= 0 && width) width--, sx+=8, tile+=delta; // Offscreen mp = mb+(sx>>3); for (m = *mp; width; width--, sx+=8, tile+=delta, *mp++ = m, m >>= 8) { u32 pack; if(sx>=328) break; // Offscreen pack = CPU_LE2(*(u32 *)(PicoMem.vram + (tile & 0x7fff))); m |= mp[1] << 8; // next mask byte // shift mask bits to bits 8-15 for easier load/store handling m = fTileFunc(m << (8-(sx&0x7)), pd + sx, pack, pal) >> (8-(sx&0x7)); } *mp = m; // write last mask byte } // anything not covered by a sprite is off (XXX or bg?) for (cnt = 1; cnt < sizeof(mb)-1; cnt++) if (mb[cnt] == 0xff) { *(u32 *)(pd+8*cnt+0) = 0; *(u32 *)(pd+8*cnt+4) = 0; } else if (mb[cnt]) for (m = 0; m < 8; m++) if (mb[cnt] & (1<PicoOpt & POPT_DIS_SPRITE_LIM) max_line_sprites = MAX_LINE_SPRITES; sh = Pico.video.reg[0xC]&8; // shadow/hilight? table=pvid->reg[5]&0x7f; if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode table<<=8; // Get sprite table address/2 for (u = est->DrawScanline; u < max_lines; u++) *((int *)&HighLnSpr[u][0]) = 0; for (u = 0; u < max_sprites && link < max_sprites; u++) { u32 *sprite; int code, code2, sx, sy, hv, height, width; sprite=(u32 *)(PicoMem.vram+((table+(link<<2))&0x7ffc)); // Find sprite // parse sprite info. the 1st half comes from the VDPs internal cache, // the 2nd half is read from VRAM code = CPU_LE2(VdpSATCache[link]); // normally same as sprite[0] sy = (code&0x1ff)-0x80; hv = (code>>24)&0xf; height = (hv&3)+1; width = (hv>>2)+1; code2 = CPU_LE2(sprite[1]); sx = (code2>>16)&0x1ff; sx -= 0x78; // Get X coordinate + 8 if (sy < max_lines && sy + (height<<3) >= est->DrawScanline) // sprite onscreen (y)? { int entry, y, w, sx_min, onscr_x, maybe_op = 0; sx_min = 8-(width<<3); onscr_x = sx_min < sx && sx < max_width; if (sh && (code2 & 0x6000) == 0x6000) maybe_op = SPRL_MAY_HAVE_OP; entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80); y = (sy >= est->DrawScanline) ? sy : est->DrawScanline; for (; y < sy + (height<<3) && y < max_lines; y++) { unsigned char *p = &HighLnSpr[y][0]; int cnt = p[0]; if (p[3] >= max_line_sprites) continue; // sprite limit? if (p[1] & SPRL_MASKED) continue; // masked? w = width; if (p[2] + width > max_line_sprites*2) { // tile limit? if (y+1 < 240) HighLnSpr[y+1][1] |= SPRL_TILE_OVFL; if (p[2] >= max_line_sprites*2) continue; w = max_line_sprites*2 - p[2]; } p[2] += w; p[3] ++; if (sx == -0x78) { if (p[1] & (SPRL_HAVE_X|SPRL_TILE_OVFL)) p[1] |= SPRL_MASKED; // masked, no more sprites for this line if (!(p[1] & SPRL_HAVE_X) && cnt == 0) p[1] |= SPRL_HAVE_MASK0; // 1st sprite is masking } else p[1] |= SPRL_HAVE_X; if (!onscr_x) continue; // offscreen x p[4+cnt] = entry; p[5+cnt] = w; // width clipped by tile limit for sprite renderer p[0] = cnt + 1; p[1] |= (entry & 0x80) ? SPRL_HAVE_HI : SPRL_HAVE_LO; p[1] |= maybe_op; // there might be op sprites on this line if (cnt > 0 && (code2 & 0x8000) && !(p[4+cnt-1]&0x80)) p[1] |= SPRL_LO_ABOVE_HI; } } *pd++ = (width<<28)|(height<<24)|(hv<<16)|((unsigned short)sy); *pd++ = (sx<<16)|((unsigned short)code2); // Find next sprite link=(code>>16)&0x7f; if (!link) break; // End of sprites } *pd = 0; #if 0 for (u = 0; u < max_lines; u++) { int y; printf("c%03i: f %x c %2i/%2i w %2i: ", u, HighLnSpr[u][1], HighLnSpr[u][0], HighLnSpr[u][3], HighLnSpr[u][2]); for (y = 0; y < HighLnSpr[u][0]; y++) { s32 *sp = HighPreSpr + (HighLnSpr[u][y+4]&0x7f) * 2; printf(" %i(%x/%x)", HighLnSpr[u][y+4],sp[0],sp[1]); } printf("\n"); } #endif } #ifndef _ASM_DRAW_C static void DrawAllSprites(unsigned char *sprited, int prio, int sh, struct PicoEState *est) { unsigned char *p; int cnt, w; cnt = sprited[0] & 0x7f; if (cnt == 0) return; p = &sprited[4]; if ((sprited[1] & (SPRL_TILE_OVFL|SPRL_HAVE_MASK0)) == (SPRL_TILE_OVFL|SPRL_HAVE_MASK0)) return; // masking effective due to tile overflow // Go through sprites backwards: w = p[cnt]; // possibly clipped width of last sprite for (cnt--; cnt >= 0; cnt--, w = 0) { s32 *sp = HighPreSpr + (p[cnt]&0x7f) * 2; if ((p[cnt] >> 7) != prio) continue; DrawSprite(sp, sh, w); } } // -------------------------------------------- void BackFill(int reg7, int sh, struct PicoEState *est) { unsigned int back; // Start with a blank scanline (background colour): back=reg7&0x3f; back|=sh<<7; // shadow back|=back<<8; back|=back<<16; memset32((int *)(est->HighCol+8), back, 320/4); } #endif // -------------------------------------------- void PicoDoHighPal555_8bit(int sh, int line, struct PicoEState *est) { unsigned int *spal, *dpal; unsigned int cnt = (sh ? 1 : est->SonicPalCount+1); unsigned int t, i; // reset dirty only if there are no outstanding changes if (Pico.m.dirtyPal == 2) Pico.m.dirtyPal = 0; // In Sonic render mode palettes were backuped in SonicPal spal = (void *)est->SonicPal; dpal = (void *)est->HighPal; // additional palettes stored after in-frame changes for (i = 0; i < cnt * 0x40 / 2; i++) { t = spal[i]; // treat it like it was 4-bit per channel, since in s/h mode it somewhat is that. // otherwise intensity difference between this and s/h will be wrong t = PXCONV(t); t |= (t >> 4) & PXMASKL; dpal[i] = t; } // norm: xxx0, sh: 0xxx, hi: 0xxx + 7 if (sh) { // shadowed pixels for (i = 0; i < 0x40 / 2; i++) { dpal[0xc0/2 + i] = dpal[i]; dpal[0x80/2 + i] = (dpal[i] >> 1) & PXMASKH; } // hilighted pixels for (i = 0; i < 0x40 / 2; i++) { t = ((dpal[i] >> 1) & PXMASKH) + PXMASKH; t |= (t >> 4) & PXMASKL; dpal[0x40/2 + i] = t; } } } #ifndef _ASM_DRAW_C void PicoDoHighPal555(int sh, int line, struct PicoEState *est) { unsigned int *spal, *dpal; unsigned int t, i; Pico.m.dirtyPal = 0; spal = (void *)PicoMem.cram; dpal = (void *)est->HighPal; for (i = 0; i < 0x40 / 2; i++) { t = spal[i]; // treat it like it was 4-bit per channel, since in s/h mode it somewhat is that. // otherwise intensity difference between this and s/h will be wrong t = PXCONV(t); t |= (t >> 4) & PXMASKL; dpal[i] = dpal[0xc0/2 + i] = t; } // norm: xxx0, sh: 0xxx, hi: 0xxx + 7 if (sh) { // shadowed pixels for (i = 0; i < 0x40 / 2; i++) dpal[0x80/2 + i] = (dpal[i] >> 1) & PXMASKH; // hilighted pixels for (i = 0; i < 0x40 / 2; i++) { t = ((dpal[i] >> 1) & PXMASKH) + PXMASKH; t |= (t >> 4) & PXMASKL; dpal[0x40/2 + i] = t; } } } void FinalizeLine555(int sh, int line, struct PicoEState *est) { unsigned short *pd=est->DrawLineDest; unsigned char *ps=est->HighCol+8; unsigned short *pal=est->HighPal; int len; if (DrawLineDestIncrement == 0) return; PicoDrawUpdateHighPal(); if ((PicoIn.AHW & PAHW_SMS) && (Pico.m.hardware & 0x3) == 0x3) len = 160; else if (Pico.video.reg[12]&1) len = 320; else len = 256; if ((*est->PicoOpt & POPT_EN_SOFTSCALE) && len < 320) { if (len == 256) switch (PicoIn.filter) { case 3: h_upscale_bl4_4_5(pd, 320, ps, 256, len, f_pal); break; case 2: h_upscale_bl2_4_5(pd, 320, ps, 256, len, f_pal); break; case 1: h_upscale_snn_4_5(pd, 320, ps, 256, len, f_pal); break; default: h_upscale_nn_4_5(pd, 320, ps, 256, len, f_pal); break; } else if (len == 160) switch (PicoIn.filter) { case 3: case 2: h_upscale_bl2_1_2(pd, 320, ps, 160, len, f_pal); break; default: h_upscale_nn_1_2(pd, 320, ps, 160, len, f_pal); break; } } else { if (!(*est->PicoOpt & POPT_DIS_32C_BORDER) && len < 320) pd += (320-len) / 2; #if 1 h_copy(pd, 320, ps, 320, len, f_pal); #else extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count); extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count); if (!sh) amips_clut_6bit(pd, ps, pal, len); else amips_clut(pd, ps, pal, len); #endif } } #endif void FinalizeLine8bit(int sh, int line, struct PicoEState *est) { unsigned char *pd = est->DrawLineDest; unsigned char *ps = est->HighCol+8; int len; static int dirty_line; if (Pico.m.dirtyPal == 1) { // a hack for mid-frame palette changes if (!(est->rendstatus & PDRAW_SONIC_MODE) | (line - dirty_line > 4)) { // store a maximum of 3 additional palettes in SonicPal if (est->SonicPalCount < 3) est->SonicPalCount ++; dirty_line = line; est->rendstatus |= PDRAW_SONIC_MODE; } blockcpy(est->SonicPal+est->SonicPalCount*0x40, PicoMem.cram, 0x40*2); Pico.m.dirtyPal = 2; } if ((PicoIn.AHW & PAHW_SMS) && (Pico.m.hardware & 0x3) == 0x3) len = 160; else if (Pico.video.reg[12]&1) len = 320; else len = 256; if (DrawLineDestIncrement == 0) pd = est->HighCol+8; if ((PicoIn.opt & POPT_EN_SOFTSCALE) && len < 320) { unsigned char pal = 0; if (!sh && (est->rendstatus & PDRAW_SONIC_MODE)) pal = est->SonicPalCount*0x40; // Smoothing can't be used with CLUT, hence it's always Nearest Neighbour. if (len == 256) // use reverse version since src and dest ptr may be the same. rh_upscale_nn_4_5(pd, 320, ps, 256, len, f_or); else rh_upscale_nn_1_2(pd, 320, ps, 256, len, f_or); } else { if (!(*est->PicoOpt & POPT_DIS_32C_BORDER) && len < 320) pd += (320-len) / 2; if (!sh && (est->rendstatus & PDRAW_SONIC_MODE)) // select active backup palette blockcpy_or(pd, ps, len, est->SonicPalCount*0x40); else if (pd != ps) blockcpy(pd, ps, len); } } static void (*FinalizeLine)(int sh, int line, struct PicoEState *est); // -------------------------------------------- static int DrawDisplay(int sh) { struct PicoEState *est=&Pico.est; unsigned char *sprited = &HighLnSpr[est->DrawScanline][0]; struct PicoVideo *pvid=&Pico.video; int win=0, edge=0, hvwind=0, lflags; int maxw, maxcells; est->rendstatus &= ~(PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO|PDRAW_WND_DIFF_PRIO); if (pvid->reg[12]&1) { maxw = 328; maxcells = 40; } else { maxw = 264; maxcells = 32; } // Find out if the window is on this line: win=pvid->reg[0x12]; edge=(win&0x1f)<<3; if (win&0x80) { if (est->DrawScanline>=edge) hvwind=1; } else { if (est->DrawScanline< edge) hvwind=1; } if (!hvwind) // we might have a vertical window here { win=pvid->reg[0x11]; edge=win&0x1f; if (win&0x80) { if (!edge) hvwind=1; else if(edge < (maxcells>>1)) hvwind=2; } else { if (!edge); else if(edge < (maxcells>>1)) hvwind=2; else hvwind=1; } } /* - layer B low - */ if (!(pvid->debug_p & PVD_KILL_B)) { lflags = LF_PLANE_B | (sh<<1); DrawLayer(lflags, HighCacheB, 0, maxcells, est); } /* - layer A low - */ lflags = LF_PLANE_A | (sh<<1); if (pvid->debug_p & PVD_KILL_A) ; else if (hvwind == 1) DrawWindow(0, maxcells>>1, 0, sh, est); else if (hvwind == 2) { DrawLayer(lflags, HighCacheA, (win&0x80) ? 0 : edge<<1, (win&0x80) ? edge<<1 : maxcells, est); DrawWindow( (win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh, est); } else DrawLayer(lflags, HighCacheA, 0, maxcells, est); /* - sprites low - */ if (pvid->debug_p & PVD_KILL_S_LO) ; else if (est->rendstatus & PDRAW_INTERLACE) DrawAllSpritesInterlace(0, sh); else if (sprited[1] & SPRL_HAVE_LO) DrawAllSprites(sprited, 0, sh, est); /* - layer B hi - */ if (!(pvid->debug_p & PVD_KILL_B) && HighCacheB[0]) DrawTilesFromCache(HighCacheB, sh, maxw, est); /* - layer A hi - */ if (pvid->debug_p & PVD_KILL_A) ; else if (hvwind == 1) DrawWindow(0, maxcells>>1, 1, sh, est); else if (hvwind == 2) { if (HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, (win&0x80) ? edge<<4 : maxw, est); DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh, est); } else if (HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, maxw, est); /* - sprites hi - */ if (pvid->debug_p & PVD_KILL_S_HI) ; else if (est->rendstatus & PDRAW_INTERLACE) DrawAllSpritesInterlace(1, sh); // have sprites without layer pri bit ontop of sprites with that bit else if ((sprited[1] & SPRL_LO_ABOVE_HI) && (PicoIn.opt & POPT_ACC_SPRITES)) DrawSpritesHiAS(sprited, sh); else if (sh && (sprited[1] & SPRL_MAY_HAVE_OP)) DrawSpritesSHi(sprited, est); else if (sprited[1] & SPRL_HAVE_HI) DrawAllSprites(sprited, 1, 0, est); #ifdef FORCE if (pvid->debug_p & PVD_FORCE_B) { lflags = LF_PLANE_B | (sh<<1); DrawLayerForced(lflags, 0, maxcells, est); } else if (pvid->debug_p & PVD_FORCE_A) { lflags = LF_PLANE_A | (sh<<1); DrawLayerForced(lflags, 0, maxcells, est); } else if (pvid->debug_p & PVD_FORCE_S) DrawSpritesForced(sprited); #endif #if 0 { int *c, a, b; for (a = 0, c = HighCacheA; *c; c+=2, a++); for (b = 0, c = HighCacheB; *c; c+=2, b++); printf("%i:%03i: a=%i, b=%i\n", Pico.m.frame_count, Pico.est.DrawScanline, a, b); } #endif return 0; } // MUST be called every frame PICO_INTERNAL void PicoFrameStart(void) { int loffs = 8, lines = 224, coffs = 0, columns = 320; int dirty = ((Pico.est.rendstatus & PDRAW_SONIC_MODE) || Pico.m.dirtyPal); int sprep = Pico.est.rendstatus & (PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES); int skipped = Pico.est.rendstatus & PDRAW_SKIP_FRAME; // prepare to do this frame Pico.est.rendstatus = 0; if ((Pico.video.reg[12] & 6) == 6) Pico.est.rendstatus |= PDRAW_INTERLACE; // interlace mode if (!(Pico.video.reg[12] & 1)) { Pico.est.rendstatus |= PDRAW_32_COLS; if (!(PicoIn.opt & POPT_EN_SOFTSCALE)) { columns = 256; coffs = 32; } } if (Pico.video.reg[1] & 8) { Pico.est.rendstatus |= PDRAW_30_ROWS; lines = 240; loffs = 0; } if (PicoIn.opt & POPT_DIS_32C_BORDER) coffs = 0; if (Pico.est.rendstatus != rendstatus_old || lines != rendlines) { rendlines = lines; // mode_change() might reset rendstatus_old by calling SetColorFormat emu_video_mode_change(loffs, lines, coffs, columns); rendstatus_old = Pico.est.rendstatus; } if (PicoIn.skipFrame) // preserve this until something is rendered at last Pico.est.rendstatus |= PDRAW_SKIP_FRAME; if (sprep | skipped) Pico.est.rendstatus |= PDRAW_PARSE_SPRITES; Pico.est.HighCol = HighColBase + loffs * HighColIncrement; Pico.est.DrawLineDest = (char *)DrawLineDestBase + loffs * DrawLineDestIncrement; Pico.est.DrawScanline = 0; skip_next_line = 0; if (FinalizeLine == FinalizeLine8bit) { // make a backup of the current palette in case Sonic mode is detected later Pico.est.SonicPalCount = 0; Pico.m.dirtyPal = (dirty ? 2 : 0); // mark as dirty but already copied blockcpy(Pico.est.SonicPal, PicoMem.cram, 0x40*2); } } static void DrawBlankedLine(int line, int offs, int sh, int bgc) { int skip = skip_next_line; if (PicoScanBegin != NULL && skip == 0) skip = PicoScanBegin(line + offs); if (skip) { skip_next_line = skip - 1; return; } BackFill(bgc, sh, &Pico.est); if (FinalizeLine != NULL) FinalizeLine(sh, line, &Pico.est); if (PicoScanEnd != NULL) skip_next_line = PicoScanEnd(line + offs); Pico.est.HighCol += HighColIncrement; Pico.est.DrawLineDest = (char *)Pico.est.DrawLineDest + DrawLineDestIncrement; } static void PicoLine(int line, int offs, int sh, int bgc) { int skip = skip_next_line; Pico.est.DrawScanline = line; if (PicoScanBegin != NULL && skip == 0) skip = PicoScanBegin(line + offs); if (skip) { skip_next_line = skip - 1; return; } if (Pico.video.debug_p & (PVD_FORCE_A | PVD_FORCE_B | PVD_FORCE_S)) bgc = 0x3f; // Draw screen: BackFill(bgc, sh, &Pico.est); if (Pico.video.reg[1]&0x40) DrawDisplay(sh); if (FinalizeLine != NULL) FinalizeLine(sh, line, &Pico.est); if (PicoScanEnd != NULL) skip_next_line = PicoScanEnd(line + offs); Pico.est.HighCol += HighColIncrement; Pico.est.DrawLineDest = (char *)Pico.est.DrawLineDest + DrawLineDestIncrement; } void PicoDrawSync(int to, int blank_last_line) { struct PicoEState *est = &Pico.est; int line, offs = 0; int sh = (Pico.video.reg[0xC] & 8) >> 3; // shadow/hilight? int bgc = Pico.video.reg[7]; pprof_start(draw); if (rendlines != 240) { offs = 8; if (to > 223) to = 223; } if (est->DrawScanline <= to - blank_last_line && (est->rendstatus & (PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES|PDRAW_PARSE_SPRITES))) PrepareSprites(to - blank_last_line + 1); for (line = est->DrawScanline; line < to; line++) PicoLine(line, offs, sh, bgc); // last line if (line <= to) { if (blank_last_line) DrawBlankedLine(line, offs, sh, bgc); else PicoLine(line, offs, sh, bgc); line++; } est->DrawScanline = line; pprof_end(draw); } // also works for fast renderer void PicoDrawUpdateHighPal(void) { struct PicoEState *est = &Pico.est; if (Pico.m.dirtyPal) { int sh = (Pico.video.reg[0xC] & 8) >> 3; // shadow/hilight? if ((PicoIn.opt & POPT_ALT_RENDERER) | (est->rendstatus & PDRAW_SONIC_MODE)) sh = 0; // no s/h support if (PicoIn.AHW & PAHW_SMS) PicoDoHighPal555SMS(); else if (FinalizeLine == FinalizeLine8bit) PicoDoHighPal555_8bit(sh, 0, est); else PicoDoHighPal555(sh, 0, est); // cover for sprite priority bits if not in s/h or sonic mode if (!sh && !(est->rendstatus & PDRAW_SONIC_MODE)) { blockcpy(est->HighPal+0x40, est->HighPal, 0x40*2); blockcpy(est->HighPal+0x80, est->HighPal, 0x80*2); } } } void PicoDrawSetOutFormat(pdso_t which, int use_32x_line_mode) { PicoDrawSetInternalBuf(NULL, 0); PicoDrawSetOutBufMD(NULL, 0); PicoDraw2SetOutBuf(NULL, 0); switch (which) { case PDF_8BIT: FinalizeLine = FinalizeLine8bit; PicoDrawSetInternalBuf(Pico.est.Draw2FB, 328); break; case PDF_RGB555: if ((PicoIn.AHW & PAHW_32X) && use_32x_line_mode) FinalizeLine = FinalizeLine32xRGB555; else FinalizeLine = FinalizeLine555; break; default: FinalizeLine = NULL; break; } if (PicoIn.AHW & PAHW_32X) PicoDrawSetOutFormat32x(which, use_32x_line_mode); PicoDrawSetOutputSMS(which); rendstatus_old = -1; Pico.m.dirtyPal = 1; } void PicoDrawSetOutBufMD(void *dest, int increment) { if (FinalizeLine == FinalizeLine8bit && increment >= 328) { // kludge for no-copy mode, using ALT_RENDERER layout PicoDrawSetInternalBuf(dest, increment); } else if (FinalizeLine == NULL) { PicoDrawSetInternalBuf(dest, increment); // needed for SMS PicoDraw2SetOutBuf(dest, increment); } else if (dest != NULL) { DrawLineDestBase = dest; DrawLineDestIncrement = increment; Pico.est.DrawLineDest = (char *)DrawLineDestBase + Pico.est.DrawScanline * increment; } else { DrawLineDestBase = DefOutBuff; DrawLineDestIncrement = 0; Pico.est.DrawLineDest = DefOutBuff; } } // note: may be called on the middle of frame void PicoDrawSetOutBuf(void *dest, int increment) { if (PicoIn.AHW & PAHW_32X) PicoDrawSetOutBuf32X(dest, increment); else PicoDrawSetOutBufMD(dest, increment); } void PicoDrawSetInternalBuf(void *dest, int increment) { if (dest != NULL) { HighColBase = dest; HighColIncrement = increment; Pico.est.HighCol = HighColBase + Pico.est.DrawScanline * increment; } else { HighColBase = DefHighCol; HighColIncrement = 0; Pico.est.HighCol = DefHighCol; } } void PicoDrawSetCallbacks(int (*begin)(unsigned int num), int (*end)(unsigned int num)) { PicoScanBegin = NULL; PicoScanEnd = NULL; PicoScan32xBegin = NULL; PicoScan32xEnd = NULL; if ((PicoIn.AHW & PAHW_32X) && FinalizeLine != FinalizeLine32xRGB555) { PicoScan32xBegin = begin; PicoScan32xEnd = end; } else { PicoScanBegin = begin; PicoScanEnd = end; } } void PicoDrawInit(void) { Pico.est.DrawLineDest = DefOutBuff; Pico.est.HighCol = HighColBase; Pico.est.HighPreSpr = HighPreSpr; rendstatus_old = -1; } // vim:ts=2:sw=2:expandtab