1 // This is part of Pico Library
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3 // (c) Copyright 2004 Dave, All rights reserved.
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4 // (c) Copyright 2006-2008 notaz, All rights reserved.
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5 // Free for non-commercial use.
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7 // For commercial use, separate licencing terms must be obtained.
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10 * The renderer has 4 modes now:
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12 * - shadow/hilight (s/h)
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13 * - "sonic mode" for midline palette changes (8bit mode only)
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14 * - accurate sprites (AS) [+ s/h]
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16 * AS and s/h both use upper bits for both priority and shadow/hilight flags.
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17 * "sonic mode" is autodetected, shadow/hilight is enabled by emulated game.
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18 * AS is enabled by user and takes priority over "sonic mode".
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20 * not handled properly:
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21 * - hilight op on shadow tile
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22 * - AS + s/h (s/h sprite flag interferes with and cleared by AS code)
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25 #include "pico_int.h"
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27 int (*PicoScanBegin)(unsigned int num) = NULL;
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28 int (*PicoScanEnd) (unsigned int num) = NULL;
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30 #if OVERRIDE_HIGHCOL
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31 static unsigned char DefHighCol[8+320+8];
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32 unsigned char *HighCol=DefHighCol;
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34 unsigned char HighCol[8+320+8];
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36 unsigned short DefOutBuff[320*2];
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37 void *DrawLineDest=DefOutBuff; // pointer to dest buffer where to draw this line to
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39 static int HighCacheA[41+1]; // caches for high layers
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40 static int HighCacheB[41+1];
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41 int HighPreSpr[80*2+1]; // slightly preprocessed sprites
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43 #define SPRL_HAVE_HI 0x80 // have hi priority sprites
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44 #define SPRL_HAVE_LO 0x40 // *lo*
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45 #define SPRL_MAY_HAVE_OP 0x20 // may have operator sprites on the line
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46 #define SPRL_LO_ABOVE_HI 0x10 // low priority sprites may be on top of hi
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47 unsigned char HighLnSpr[240][3 + MAX_LINE_SPRITES]; // sprite_count, ^flags, tile_count, [spritep]...
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50 int DrawScanline = 0;
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51 int PicoDrawMask = -1;
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53 static int skip_next_line=0;
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55 //unsigned short ppt[] = { 0x0f11, 0x0ff1, 0x01f1, 0x011f, 0x01ff, 0x0f1f, 0x0f0e, 0x0e7c };
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59 int nametab; // Position in VRAM of name table (for this tile line)
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60 int line; // Line number in pixels 0x000-0x3ff within the virtual tilemap
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61 int hscroll; // Horizontal scroll value in pixels for the line
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62 int xmask; // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap
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63 int *hc; // cache for high tile codes and their positions
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64 int cells; // cells (tiles) to draw (32 col mode doesn't need to update whole 320)
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67 // stuff available in asm:
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69 void DrawWindow(int tstart, int tend, int prio, int sh);
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70 void BackFill(int reg7, int sh);
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71 void DrawAllSprites(unsigned char *sprited, int prio, int sh);
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72 void DrawTilesFromCache(int *hc, int sh, int rlim);
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73 void DrawSpritesSHi(unsigned char *sprited);
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74 void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells);
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75 void FinalizeLineBGR444(int sh);
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76 void FinalizeLineRGB555(int sh);
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77 void *blockcpy(void *dst, const void *src, size_t n);
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78 void blockcpy_or(void *dst, void *src, size_t n, int pat);
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81 void blockcpy_or(void *dst, void *src, size_t n, int pat)
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83 unsigned char *pd = dst, *ps = src;
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85 *pd++ = (unsigned char) (*ps++ | pat);
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87 #define blockcpy memcpy
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91 #define TileNormMaker(funcname,pix_func) \
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92 static int funcname(int sx,int addr,int pal) \
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94 unsigned char *pd = HighCol+sx; \
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95 unsigned int pack=0; unsigned int t=0; \
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97 pack=*(unsigned int *)(Pico.vram+addr); /* Get 8 pixels */ \
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100 t=(pack&0x0000f000)>>12; pix_func(0); \
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101 t=(pack&0x00000f00)>> 8; pix_func(1); \
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102 t=(pack&0x000000f0)>> 4; pix_func(2); \
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103 t=(pack&0x0000000f) ; pix_func(3); \
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104 t=(pack&0xf0000000)>>28; pix_func(4); \
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105 t=(pack&0x0f000000)>>24; pix_func(5); \
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106 t=(pack&0x00f00000)>>20; pix_func(6); \
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107 t=(pack&0x000f0000)>>16; pix_func(7); \
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111 return 1; /* Tile blank */ \
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115 #define TileFlipMaker(funcname,pix_func) \
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116 static int funcname(int sx,int addr,int pal) \
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118 unsigned char *pd = HighCol+sx; \
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119 unsigned int pack=0; unsigned int t=0; \
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121 pack=*(unsigned int *)(Pico.vram+addr); /* Get 8 pixels */ \
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124 t=(pack&0x000f0000)>>16; pix_func(0); \
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125 t=(pack&0x00f00000)>>20; pix_func(1); \
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126 t=(pack&0x0f000000)>>24; pix_func(2); \
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127 t=(pack&0xf0000000)>>28; pix_func(3); \
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128 t=(pack&0x0000000f) ; pix_func(4); \
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129 t=(pack&0x000000f0)>> 4; pix_func(5); \
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130 t=(pack&0x00000f00)>> 8; pix_func(6); \
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131 t=(pack&0x0000f000)>>12; pix_func(7); \
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135 return 1; /* Tile blank */ \
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139 #ifdef _ASM_DRAW_C_AMIPS
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140 int TileNorm(int sx,int addr,int pal);
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141 int TileFlip(int sx,int addr,int pal);
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144 #define pix_just_write(x) \
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147 TileNormMaker(TileNorm,pix_just_write)
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148 TileFlipMaker(TileFlip,pix_just_write)
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152 #ifndef _ASM_DRAW_C
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154 // draw a sprite pixel, process operator colors
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155 #define pix_sh(x) \
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157 else if (t>=0xe) pd[x]=(pd[x]&0x3f)|(t<<6); /* c0 shadow, 80 hilight */ \
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160 TileNormMaker(TileNormSH, pix_sh)
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161 TileFlipMaker(TileFlipSH, pix_sh)
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163 // draw a sprite pixel, mark operator colors
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164 #define pix_sh_markop(x) \
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166 else if (t>=0xe) pd[x]|=0x80; \
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169 TileNormMaker(TileNormSH_markop, pix_sh_markop)
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170 TileFlipMaker(TileFlipSH_markop, pix_sh_markop)
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172 // process operator pixels only, apply only on low pri tiles and other op pixels
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173 #define pix_sh_onlyop(x) \
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174 if (t>=0xe && (pd[x]&0xc0)) \
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175 pd[x]=(pd[x]&0x3f)|(t<<6); /* c0 shadow, 80 hilight */ \
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177 TileNormMaker(TileNormSH_onlyop_lp, pix_sh_onlyop)
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178 TileFlipMaker(TileFlipSH_onlyop_lp, pix_sh_onlyop)
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182 // draw a sprite pixel (AS)
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183 #define pix_as(x) \
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184 if (t && !(pd[x]&0x80)) pd[x]=pal|t
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186 TileNormMaker(TileNormAS, pix_as)
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187 TileFlipMaker(TileFlipAS, pix_as)
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189 // draw a sprite pixel, skip operator colors (AS)
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190 #define pix_sh_as_noop(x) \
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191 if (t && t < 0xe && !(pd[x]&0x80)) pd[x]=pal|t
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193 TileNormMaker(TileNormAS_noop, pix_sh_as_noop)
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194 TileFlipMaker(TileFlipAS_noop, pix_sh_as_noop)
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196 // mark pixel as sprite pixel (AS)
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197 #define pix_sh_as_onlymark(x) \
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200 TileNormMaker(TileNormAS_onlymark, pix_sh_as_onlymark)
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201 TileFlipMaker(TileFlipAS_onlymark, pix_sh_as_onlymark)
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204 // --------------------------------------------
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206 #ifndef _ASM_DRAW_C
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207 static void DrawStrip(struct TileStrip *ts, int plane_sh, int cellskip)
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209 int tilex,dx,ty,code=0,addr=0,cells;
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210 int oldcode=-1,blank=-1; // The tile we know is blank
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213 // Draw tiles across screen:
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214 sh=(plane_sh<<5)&0x40;
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215 tilex=((-ts->hscroll)>>3)+cellskip;
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216 ty=(ts->line&7)<<1; // Y-Offset into tile
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217 dx=((ts->hscroll-1)&7)+1;
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218 cells = ts->cells - cellskip;
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219 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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222 for (; cells > 0; dx+=8,tilex++,cells--)
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226 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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227 if (code==blank) continue;
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228 if (code>>15) { // high priority tile
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229 int cval = code | (dx<<16) | (ty<<25);
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230 if(code&0x1000) cval^=7<<26;
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231 *ts->hc++ = cval; // cache it
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235 if (code!=oldcode) {
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237 // Get tile address/2:
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238 addr=(code&0x7ff)<<4;
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240 if (code&0x1000) addr^=0xe; // Y-flip
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242 pal=((code>>9)&0x30)|sh;
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245 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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246 else zero=TileNorm(dx,addr,pal);
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248 if (zero) blank=code; // We know this tile is blank now
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251 // terminate the cache list
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253 // if oldcode wasn't changed, it means all layer is hi priority
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254 if (oldcode == -1) rendstatus |= PDRAW_PLANE_HI_PRIO;
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258 void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
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260 int tilex,dx,code=0,addr=0,cell=0;
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261 int oldcode=-1,blank=-1; // The tile we know is blank
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262 int pal=0,scan=DrawScanline;
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264 // Draw tiles across screen:
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265 tilex=(-ts->hscroll)>>3;
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266 dx=((ts->hscroll-1)&7)+1;
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267 if(dx != 8) cell--; // have hscroll, start with negative cell
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272 for (; cell < ts->cells; dx+=8,tilex++,cell++)
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274 int zero=0,nametabadd,ty;
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279 vscroll=Pico.vsram[(plane_sh&1)+(cell&~1)];
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281 // Find the line in the name table
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282 line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..
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283 nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width]
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284 ty=(line&7)<<1; // Y-Offset into tile
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287 code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];
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288 if (code==blank) continue;
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289 if (code>>15) { // high priority tile
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290 int cval = code | (dx<<16) | (ty<<25);
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291 if(code&0x1000) cval^=7<<26;
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292 *ts->hc++ = cval; // cache it
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296 if (code!=oldcode) {
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298 // Get tile address/2:
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299 addr=(code&0x7ff)<<4;
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300 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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302 pal=((code>>9)&0x30)|((plane_sh<<5)&0x40);
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305 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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306 else zero=TileNorm(dx,addr,pal);
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308 if (zero) blank=code; // We know this tile is blank now
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311 // terminate the cache list
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313 if (oldcode == -1) rendstatus |= PDRAW_PLANE_HI_PRIO;
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317 #ifndef _ASM_DRAW_C
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320 void DrawStripInterlace(struct TileStrip *ts)
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322 int tilex=0,dx=0,ty=0,code=0,addr=0,cells;
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323 int oldcode=-1,blank=-1; // The tile we know is blank
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326 // Draw tiles across screen:
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327 tilex=(-ts->hscroll)>>3;
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328 ty=(ts->line&15)<<1; // Y-Offset into tile
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329 dx=((ts->hscroll-1)&7)+1;
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331 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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333 for (; cells; dx+=8,tilex++,cells--)
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337 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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338 if (code==blank) continue;
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339 if (code>>15) { // high priority tile
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340 int cval = (code&0xfc00) | (dx<<16) | (ty<<25);
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341 cval|=(code&0x3ff)<<1;
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342 if(code&0x1000) cval^=0xf<<26;
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343 *ts->hc++ = cval; // cache it
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347 if (code!=oldcode) {
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349 // Get tile address/2:
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350 addr=(code&0x7ff)<<5;
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351 if (code&0x1000) addr+=30-ty; else addr+=ty; // Y-flip
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353 // pal=Pico.cram+((code>>9)&0x30);
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354 pal=((code>>9)&0x30);
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357 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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358 else zero=TileNorm(dx,addr,pal);
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360 if (zero) blank=code; // We know this tile is blank now
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363 // terminate the cache list
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367 // --------------------------------------------
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369 #ifndef _ASM_DRAW_C
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370 static void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells)
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372 struct PicoVideo *pvid=&Pico.video;
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373 const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid)
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374 struct TileStrip ts;
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375 int width, height, ymask;
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381 // Work out the TileStrip to draw
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383 // Work out the name table size: 32 64 or 128 tiles (0-3)
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384 width=pvid->reg[16];
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385 height=(width>>4)&3; width&=3;
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387 ts.xmask=(1<<shift[width])-1; // X Mask in tiles (0x1f-0x7f)
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388 ymask=(height<<8)|0xff; // Y Mask in pixels
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389 if(width == 1) ymask&=0x1ff;
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390 else if(width>1) ymask =0x0ff;
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392 // Find name table:
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393 if (plane_sh&1) ts.nametab=(pvid->reg[4]&0x07)<<12; // B
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394 else ts.nametab=(pvid->reg[2]&0x38)<< 9; // A
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396 htab=pvid->reg[13]<<9; // Horizontal scroll table address
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397 if ( pvid->reg[11]&2) htab+=DrawScanline<<1; // Offset by line
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398 if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile
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399 htab+=plane_sh&1; // A or B
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401 // Get horizontal scroll value, will be masked later
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402 ts.hscroll=Pico.vram[htab&0x7fff];
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404 if((pvid->reg[12]&6) == 6) {
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405 // interlace mode 2
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406 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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408 // Find the line in the name table
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409 ts.line=(vscroll+(DrawScanline<<1))&((ymask<<1)|1);
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410 ts.nametab+=(ts.line>>4)<<shift[width];
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412 DrawStripInterlace(&ts);
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413 } else if( pvid->reg[11]&4) {
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414 // shit, we have 2-cell column based vscroll
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415 // luckily this doesn't happen too often
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416 ts.line=ymask|(shift[width]<<24); // save some stuff instead of line
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417 DrawStripVSRam(&ts, plane_sh, cellskip);
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419 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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421 // Find the line in the name table
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422 ts.line=(vscroll+DrawScanline)&ymask;
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423 ts.nametab+=(ts.line>>3)<<shift[width];
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425 DrawStrip(&ts, plane_sh, cellskip);
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430 // --------------------------------------------
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432 // tstart & tend are tile pair numbers
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433 static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
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435 struct PicoVideo *pvid=&Pico.video;
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436 int tilex,ty,nametab,code=0;
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437 int blank=-1; // The tile we know is blank
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439 // Find name table line:
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440 if (pvid->reg[12]&1)
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442 nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode
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443 nametab+=(DrawScanline>>3)<<6;
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447 nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode
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448 nametab+=(DrawScanline>>3)<<5;
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453 if (!(rendstatus & PDRAW_WND_DIFF_PRIO)) {
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454 // check the first tile code
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455 code=Pico.vram[nametab+tilex];
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456 // if the whole window uses same priority (what is often the case), we may be able to skip this field
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457 if ((code>>15) != prio) return;
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461 ty=(DrawScanline&7)<<1; // Y-Offset into tile
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463 // Draw tiles across screen:
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466 for (; tilex < tend; tilex++)
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471 code=Pico.vram[nametab+tilex];
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472 if (code==blank) continue;
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473 if ((code>>15) != prio) {
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474 rendstatus |= PDRAW_WND_DIFF_PRIO;
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478 pal=((code>>9)&0x30);
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480 // Get tile address/2:
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481 addr=(code&0x7ff)<<4;
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482 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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484 if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
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485 else zero=TileNorm(8+(tilex<<3),addr,pal);
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487 if (zero) blank=code; // We know this tile is blank now
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492 for (; tilex < tend; tilex++)
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497 code=Pico.vram[nametab+tilex];
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498 if(code==blank) continue;
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499 if((code>>15) != prio) {
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500 rendstatus |= PDRAW_WND_DIFF_PRIO;
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504 pal=((code>>9)&0x30);
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507 int *zb = (int *)(HighCol+8+(tilex<<3));
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508 *zb++ &= 0x3f3f3f3f;
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514 // Get tile address/2:
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515 addr=(code&0x7ff)<<4;
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516 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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518 if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
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519 else zero=TileNorm(8+(tilex<<3),addr,pal);
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521 if (zero) blank=code; // We know this tile is blank now
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526 // --------------------------------------------
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528 static void DrawTilesFromCacheShPrep(void)
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530 // as some layer has covered whole line with hi priority tiles,
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531 // we can process whole line and then act as if sh/hi mode was off,
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532 // but leave lo pri op sprite markers alone
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533 int c = 320/4, *zb = (int *)(HighCol+8);
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534 rendstatus |= PDRAW_SHHI_DONE;
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537 *zb++ &= 0xbfbfbfbf;
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541 static void DrawTilesFromCache(int *hc, int sh, int rlim)
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543 int code, addr, dx;
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546 // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it
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548 if (sh && (rendstatus & (PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO)))
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550 if (!(rendstatus & PDRAW_SHHI_DONE))
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551 DrawTilesFromCacheShPrep();
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557 short blank=-1; // The tile we know is blank
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558 while ((code=*hc++)) {
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560 if((short)code == blank) continue;
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561 // Get tile address/2:
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562 addr=(code&0x7ff)<<4;
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563 addr+=(unsigned int)code>>25; // y offset into tile
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564 dx=(code>>16)&0x1ff;
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566 pal=((code>>9)&0x30);
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567 if (rlim-dx < 0) goto last_cut_tile;
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569 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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570 else zero=TileNorm(dx,addr,pal);
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572 if (zero) blank=(short)code;
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577 while ((code=*hc++)) {
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579 // Get tile address/2:
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580 addr=(code&0x7ff)<<4;
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581 addr+=(unsigned int)code>>25; // y offset into tile
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582 dx=(code>>16)&0x1ff;
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584 *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf;
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585 *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf;
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587 pal=((code>>9)&0x30);
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588 if (rlim-dx < 0) goto last_cut_tile;
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590 if (code&0x0800) TileFlip(dx,addr,pal);
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591 else TileNorm(dx,addr,pal);
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598 unsigned int t, pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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599 unsigned char *pd = HighCol+dx;
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605 case 7: t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8)); // "break" is left out intentionally
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606 case 6: t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));
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607 case 5: t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t ));
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608 case 4: t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));
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609 case 3: t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));
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610 case 2: t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));
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611 case 1: t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));
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619 case 7: t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));
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620 case 6: t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));
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621 case 5: t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));
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622 case 4: t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t ));
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623 case 3: t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));
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624 case 2: t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));
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625 case 1: t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));
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632 // --------------------------------------------
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634 // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size
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635 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
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637 static void DrawSprite(int *sprite, int sh)
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639 int width=0,height=0;
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642 int tile=0,delta=0;
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644 int (*fTileFunc)(int sx,int addr,int pal);
\r
646 // parse the sprite data
\r
651 height=(sy>>24)&7; // Width and height in tiles
\r
652 sy=(sy<<16)>>16; // Y
\r
654 row=DrawScanline-sy; // Row of the sprite we are on
\r
656 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
658 tile=code + (row>>3); // Tile number increases going down
\r
659 delta=height; // Delta to increase tile by going right
\r
660 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
662 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
663 delta<<=4; // Delta of address
\r
665 pal=(code>>9)&0x30;
\r
668 if (sh && (code&0x6000) == 0x6000) {
\r
669 if(code&0x0800) fTileFunc=TileFlipSH_markop;
\r
670 else fTileFunc=TileNormSH_markop;
\r
672 if(code&0x0800) fTileFunc=TileFlip;
\r
673 else fTileFunc=TileNorm;
\r
676 for (; width; width--,sx+=8,tile+=delta)
\r
678 if(sx<=0) continue;
\r
679 if(sx>=328) break; // Offscreen
\r
681 tile&=0x7fff; // Clip tile address
\r
682 fTileFunc(sx,tile,pal);
\r
687 static void DrawSpriteInterlace(unsigned int *sprite)
\r
689 int width=0,height=0;
\r
692 int tile=0,delta=0;
\r
695 // parse the sprite data
\r
698 sy=(sy&0x3ff)-0x100; // Y
\r
699 width=(height>>2)&3; height&=3;
\r
700 width++; height++; // Width and height in tiles
\r
702 row=(DrawScanline<<1)-sy; // Row of the sprite we are on
\r
705 sx=((code>>16)&0x1ff)-0x78; // X
\r
707 if (code&0x1000) row^=(16<<height)-1; // Flip Y
\r
709 tile=code&0x3ff; // Tile number
\r
710 tile+=row>>4; // Tile number increases going down
\r
711 delta=height; // Delta to increase tile by going right
\r
712 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
714 tile<<=5; tile+=(row&15)<<1; // Tile address
\r
716 delta<<=5; // Delta of address
\r
717 pal=((code>>9)&0x30); // Get palette pointer
\r
719 for (; width; width--,sx+=8,tile+=delta)
\r
721 if(sx<=0) continue;
\r
722 if(sx>=328) break; // Offscreen
\r
724 tile&=0x7fff; // Clip tile address
\r
725 if (code&0x0800) TileFlip(sx,tile,pal);
\r
726 else TileNorm(sx,tile,pal);
\r
731 static void DrawAllSpritesInterlace(int pri, int sh)
\r
733 struct PicoVideo *pvid=&Pico.video;
\r
734 int i,u,table,link=0,sline=DrawScanline<<1;
\r
735 unsigned int *sprites[80]; // Sprite index
\r
737 table=pvid->reg[5]&0x7f;
\r
738 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
739 table<<=8; // Get sprite table address/2
\r
741 for (i=u=0; u < 80 && i < 21; u++)
\r
743 unsigned int *sprite;
\r
744 int code, sx, sy, height;
\r
746 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
751 if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite
\r
753 // check if it is on this line
\r
754 sy = (code&0x3ff)-0x100;
\r
755 height = (((code>>24)&3)+1)<<4;
\r
756 if(sline < sy || sline >= sy+height) goto nextsprite; // no
\r
758 // check if sprite is not hidden offscreen
\r
759 sx = (sx>>16)&0x1ff;
\r
760 sx -= 0x78; // Get X coordinate + 8
\r
761 if(sx <= -8*3 || sx >= 328) goto nextsprite;
\r
763 // sprite is good, save it's pointer
\r
764 sprites[i++]=sprite;
\r
767 // Find next sprite
\r
768 link=(code>>16)&0x7f;
\r
769 if(!link) break; // End of sprites
\r
772 // Go through sprites backwards:
\r
773 for (i-- ;i>=0; i--)
\r
774 DrawSpriteInterlace(sprites[i]);
\r
778 #ifndef _ASM_DRAW_C
\r
780 * s/h drawing: lo_layers|40, lo_sprites|40 && mark_op,
\r
781 * hi_layers&=~40, hi_sprites
\r
783 * Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size
\r
784 * Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
786 static void DrawSpritesSHi(unsigned char *sprited)
\r
788 int (*fTileFunc)(int sx,int addr,int pal);
\r
792 cnt = sprited[0] & 0x7f;
\r
793 if (cnt == 0) return;
\r
797 // Go through sprites backwards:
\r
798 for (cnt--; cnt >= 0; cnt--)
\r
800 int *sprite, code, pal, tile, sx, sy;
\r
801 int offs, delta, width, height, row;
\r
803 offs = (p[cnt] & 0x7f) * 2;
\r
804 sprite = HighPreSpr + offs;
\r
806 pal = (code>>9)&0x30;
\r
810 if (code & 0x8000) // hi priority
\r
812 if (code&0x800) fTileFunc=TileFlipSH;
\r
813 else fTileFunc=TileNormSH;
\r
815 if (code&0x800) fTileFunc=TileFlipSH_onlyop_lp;
\r
816 else fTileFunc=TileNormSH_onlyop_lp;
\r
819 if (!(code & 0x8000)) continue; // non-operator low sprite, already drawn
\r
820 if (code&0x800) fTileFunc=TileFlip;
\r
821 else fTileFunc=TileNorm;
\r
824 // parse remaining sprite data
\r
828 height=(sy>>24)&7; // Width and height in tiles
\r
829 sy=(sy<<16)>>16; // Y
\r
831 row=DrawScanline-sy; // Row of the sprite we are on
\r
833 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
835 tile=code + (row>>3); // Tile number increases going down
\r
836 delta=height; // Delta to increase tile by going right
\r
837 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
839 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
840 delta<<=4; // Delta of address
\r
842 for (; width; width--,sx+=8,tile+=delta)
\r
844 if(sx<=0) continue;
\r
845 if(sx>=328) break; // Offscreen
\r
847 tile&=0x7fff; // Clip tile address
\r
848 fTileFunc(sx,tile,pal);
\r
852 #endif // !_ASM_DRAW_C
\r
854 static void DrawSpritesHiAS(unsigned char *sprited, int sh)
\r
856 int (*fTileFunc)(int sx,int addr,int pal);
\r
858 int entry, cnt, sh_cnt = 0;
\r
860 cnt = sprited[0] & 0x7f;
\r
861 if (cnt == 0) return;
\r
863 rendstatus |= PDRAW_SPR_LO_ON_HI;
\r
867 // Go through sprites:
\r
868 for (entry = 0; entry < cnt; entry++)
\r
870 int *sprite, code, pal, tile, sx, sy;
\r
871 int offs, delta, width, height, row;
\r
873 offs = (p[entry] & 0x7f) * 2;
\r
874 sprite = HighPreSpr + offs;
\r
876 pal = (code>>9)&0x30;
\r
878 if (code & 0x8000) // hi priority
\r
880 if (sh && pal == 0x30)
\r
882 if (code&0x800) fTileFunc=TileFlipAS_noop;
\r
883 else fTileFunc=TileNormAS_noop;
\r
885 if (code&0x800) fTileFunc=TileFlipAS;
\r
886 else fTileFunc=TileNormAS;
\r
889 if (code&0x800) fTileFunc=TileFlipAS_onlymark;
\r
890 else fTileFunc=TileNormAS_onlymark;
\r
892 if (sh && pal == 0x30)
\r
893 p[sh_cnt++] = offs / 2; // re-save for sh/hi pass
\r
895 // parse remaining sprite data
\r
899 height=(sy>>24)&7; // Width and height in tiles
\r
900 sy=(sy<<16)>>16; // Y
\r
902 row=DrawScanline-sy; // Row of the sprite we are on
\r
904 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
906 tile=code + (row>>3); // Tile number increases going down
\r
907 delta=height; // Delta to increase tile by going right
\r
908 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
910 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
911 delta<<=4; // Delta of address
\r
914 for (; width; width--,sx+=8,tile+=delta)
\r
916 if(sx<=0) continue;
\r
917 if(sx>=328) break; // Offscreen
\r
919 tile&=0x7fff; // Clip tile address
\r
920 fTileFunc(sx,tile,pal);
\r
924 if (!sh || !(sprited[1]&SPRL_MAY_HAVE_OP)) return;
\r
926 /* nasty 1: remove 'sprite' flags */
\r
928 int c = 320/4, *zb = (int *)(HighCol+8);
\r
931 *zb++ &= 0x7f7f7f7f;
\r
935 /* nasty 2: sh operator pass */
\r
936 sprited[0] = sh_cnt;
\r
937 DrawSpritesSHi(sprited);
\r
941 // Index + 0 : ----hhvv -lllllll -------y yyyyyyyy
\r
942 // Index + 4 : -------x xxxxxxxx pccvhnnn nnnnnnnn
\r
944 // Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size
\r
945 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
947 void PrepareSprites(int full)
\r
949 struct PicoVideo *pvid=&Pico.video;
\r
952 int *pd = HighPreSpr;
\r
953 int max_lines = 224, max_sprites = 80, max_width = 328;
\r
954 int max_line_sprites = 20; // 20 sprites, 40 tiles
\r
956 if (!(Pico.video.reg[12]&1))
\r
957 max_sprites = 64, max_line_sprites = 16, max_width = 264;
\r
958 if (PicoOpt & POPT_DIS_SPRITE_LIM)
\r
959 max_line_sprites = MAX_LINE_SPRITES;
\r
961 if (pvid->reg[1]&8) max_lines = 240;
\r
962 sh = Pico.video.reg[0xC]&8; // shadow/hilight?
\r
964 table=pvid->reg[5]&0x7f;
\r
965 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
966 table<<=8; // Get sprite table address/2
\r
971 // updates: tilecode, sx
\r
972 for (u=0; u < max_sprites && (pack = *pd); u++, pd+=2)
\r
974 unsigned int *sprite;
\r
975 int code2, sx, sy, height;
\r
977 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
979 // parse sprite info
\r
981 sx = (code2>>16)&0x1ff;
\r
982 sx -= 0x78; // Get X coordinate + 8
\r
983 sy = (pack << 16) >> 16;
\r
984 height = (pack >> 24) & 0xf;
\r
986 if (sy < max_lines && sy + (height<<3) > DrawScanline && // sprite onscreen (y)?
\r
987 (sx > -24 || sx < max_width)) // onscreen x
\r
989 int y = (sy >= DrawScanline) ? sy : DrawScanline;
\r
990 int entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80);
\r
991 for (; y < sy + (height<<3) && y < max_lines; y++)
\r
994 cnt = HighLnSpr[y][0] & 0x7f;
\r
995 if (cnt >= max_line_sprites) continue; // sprite limit?
\r
997 for (i = 0; i < cnt; i++)
\r
998 if (((HighLnSpr[y][3+i] ^ entry) & 0x7f) == 0) goto found;
\r
1000 // this sprite was previously missing
\r
1001 HighLnSpr[y][3+cnt] = entry;
\r
1002 HighLnSpr[y][0] = cnt + 1;
\r
1005 HighLnSpr[y][1] |= SPRL_HAVE_HI;
\r
1006 else HighLnSpr[y][1] |= SPRL_HAVE_LO;
\r
1010 code2 &= ~0xfe000000;
\r
1011 code2 -= 0x00780000; // Get X coordinate + 8 in upper 16 bits
\r
1014 // Find next sprite
\r
1015 link=(sprite[0]>>16)&0x7f;
\r
1016 if (!link) break; // End of sprites
\r
1021 for (u = 0; u < max_lines; u++)
\r
1022 *((int *)&HighLnSpr[u][0]) = 0;
\r
1024 for (u = 0; u < max_sprites; u++)
\r
1026 unsigned int *sprite;
\r
1027 int code, code2, sx, sy, hv, height, width;
\r
1029 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
1031 // parse sprite info
\r
1033 sy = (code&0x1ff)-0x80;
\r
1034 hv = (code>>24)&0xf;
\r
1035 height = (hv&3)+1;
\r
1037 width = (hv>>2)+1;
\r
1038 code2 = sprite[1];
\r
1039 sx = (code2>>16)&0x1ff;
\r
1040 sx -= 0x78; // Get X coordinate + 8
\r
1042 if (sy < max_lines && sy + (height<<3) > DrawScanline) // sprite onscreen (y)?
\r
1044 int entry, y, sx_min, onscr_x, maybe_op = 0;
\r
1046 sx_min = 8-(width<<3);
\r
1047 onscr_x = sx_min < sx && sx < max_width;
\r
1048 if (sh && (code2 & 0x6000) == 0x6000)
\r
1049 maybe_op = SPRL_MAY_HAVE_OP;
\r
1051 entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80);
\r
1052 y = (sy >= DrawScanline) ? sy : DrawScanline;
\r
1053 for (; y < sy + (height<<3) && y < max_lines; y++)
\r
1055 unsigned char *p = &HighLnSpr[y][0];
\r
1057 if (cnt >= max_line_sprites) continue; // sprite limit?
\r
1059 if (p[2] >= max_line_sprites*2) { // tile limit?
\r
1065 if (sx == -0x78) {
\r
1067 p[0] |= 0x80; // masked, no more sprites for this line
\r
1070 // must keep the first sprite even if it's offscreen, for masking
\r
1071 if (cnt > 0 && !onscr_x) continue; // offscreen x
\r
1075 p[1] |= (entry & 0x80) ? SPRL_HAVE_HI : SPRL_HAVE_LO;
\r
1076 p[1] |= maybe_op; // there might be op sprites on this line
\r
1077 if (cnt > 0 && (code2 & 0x8000) && !(p[3+cnt-1]&0x80))
\r
1078 p[1] |= SPRL_LO_ABOVE_HI;
\r
1082 *pd++ = (width<<28)|(height<<24)|(hv<<16)|((unsigned short)sy);
\r
1083 *pd++ = (sx<<16)|((unsigned short)code2);
\r
1085 // Find next sprite
\r
1086 link=(code>>16)&0x7f;
\r
1087 if (!link) break; // End of sprites
\r
1092 for (u = 0; u < max_lines; u++)
\r
1095 printf("c%03i: %2i, %2i: ", u, HighLnSpr[u][0] & 0x7f, HighLnSpr[u][2]);
\r
1096 for (y = 0; y < HighLnSpr[u][0] & 0x7f; y++)
\r
1097 printf(" %i", HighLnSpr[u][y+3]);
\r
1104 #ifndef _ASM_DRAW_C
\r
1105 static void DrawAllSprites(unsigned char *sprited, int prio, int sh)
\r
1107 int rs = rendstatus;
\r
1111 if (rs & (PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES)) {
\r
1112 //elprintf(EL_STATUS, "PrepareSprites(%i)", (rs>>4)&1);
\r
1113 PrepareSprites(rs & PDRAW_DIRTY_SPRITES);
\r
1114 rendstatus = rs & ~(PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES);
\r
1117 cnt = sprited[0] & 0x7f;
\r
1118 if (cnt == 0) return;
\r
1122 // Go through sprites backwards:
\r
1123 for (cnt--; cnt >= 0; cnt--)
\r
1126 if ((p[cnt] >> 7) != prio) continue;
\r
1127 offs = (p[cnt]&0x7f) * 2;
\r
1128 DrawSprite(HighPreSpr + offs, sh);
\r
1133 // --------------------------------------------
\r
1135 static void BackFill(int reg7, int sh)
\r
1137 unsigned int back;
\r
1139 // Start with a blank scanline (background colour):
\r
1145 memset32((int *)(HighCol+8), back, 320/4);
\r
1149 // --------------------------------------------
\r
1151 unsigned short HighPal[0x100];
\r
1153 #ifndef _ASM_DRAW_C
\r
1154 void PicoDoHighPal555(int sh)
\r
1156 unsigned short *pal=HighPal;
\r
1159 Pico.m.dirtyPal = 0;
\r
1162 unsigned int *spal=(void *)Pico.cram;
\r
1163 unsigned int *dpal=(void *)HighPal;
\r
1164 for (i = 0x3f/2; i >= 0; i--)
\r
1166 dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
\r
1168 dpal[i] = ((spal[i]&0x000f000f)<<12)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)>>7);
\r
1174 // shadowed pixels
\r
1175 for (i = 0x3f; i >= 0; i--)
\r
1176 pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x738e);
\r
1177 // hilighted pixels
\r
1178 for (i = 0x3f; i >= 0; i--) {
\r
1179 t=pal[i]&0xe71c;t+=0x4208;if(t&0x20)t|=0x1c;if(t&0x800)t|=0x700;if(t&0x10000)t|=0xe000;t&=0xe71c;
\r
1180 pal[0x80|i]=(unsigned short)t;
\r
1185 static void FinalizeLineBGR444(int sh)
\r
1187 unsigned short *pd=DrawLineDest;
\r
1188 unsigned char *ps=HighCol+8;
\r
1189 unsigned short *pal=Pico.cram;
\r
1190 int len, i, t, mask=0xff;
\r
1192 if (Pico.video.reg[12]&1) {
\r
1195 if(!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1201 if(Pico.m.dirtyPal) {
\r
1202 blockcpy(pal, Pico.cram, 0x40*2);
\r
1203 // shadowed pixels
\r
1204 for(i = 0x3f; i >= 0; i--)
\r
1205 pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x0777);
\r
1206 // hilighted pixels
\r
1207 for(i = 0x3f; i >= 0; i--) {
\r
1208 t=pal[i]&0xeee;t+=0x444;if(t&0x10)t|=0xe;if(t&0x100)t|=0xe0;if(t&0x1000)t|=0xe00;t&=0xeee;
\r
1209 pal[0x80|i]=(unsigned short)t;
\r
1211 Pico.m.dirtyPal = 0;
\r
1215 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))
\r
1216 mask=0x3f; // accurate sprites
\r
1218 for(i = 0; i < len; i++)
\r
1219 pd[i] = pal[ps[i] & mask];
\r
1223 static void FinalizeLineRGB555(int sh)
\r
1225 unsigned short *pd=DrawLineDest;
\r
1226 unsigned char *ps=HighCol+8;
\r
1227 unsigned short *pal=HighPal;
\r
1230 if (Pico.m.dirtyPal)
\r
1231 PicoDoHighPal555(sh);
\r
1233 if (Pico.video.reg[12]&1) {
\r
1236 if (!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1243 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))
\r
1244 mask=0x3f; // accurate sprites, upper bits are priority stuff
\r
1246 for (i = 0; i < len; i++)
\r
1247 pd[i] = pal[ps[i] & mask];
\r
1249 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1250 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1251 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))
\r
1252 amips_clut_6bit(pd, ps, pal, len);
\r
1253 else amips_clut(pd, ps, pal, len);
\r
1259 static void FinalizeLine8bit(int sh)
\r
1261 unsigned char *pd=DrawLineDest;
\r
1262 int len, rs = rendstatus;
\r
1263 static int dirty_count;
\r
1265 if (!sh && Pico.m.dirtyPal == 1 && DrawScanline < 222)
\r
1267 // a hack for mid-frame palette changes
\r
1268 if (!(rs & PDRAW_SONIC_MODE))
\r
1270 else dirty_count++;
\r
1271 rs |= PDRAW_SONIC_MODE;
\r
1273 if (dirty_count == 3) {
\r
1274 blockcpy(HighPal, Pico.cram, 0x40*2);
\r
1275 } else if (dirty_count == 11) {
\r
1276 blockcpy(HighPal+0x40, Pico.cram, 0x40*2);
\r
1280 if (Pico.video.reg[12]&1) {
\r
1283 if (!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1287 if (!sh && (rs & PDRAW_SONIC_MODE)) {
\r
1288 if (dirty_count >= 11) {
\r
1289 blockcpy_or(pd, HighCol+8, len, 0x80);
\r
1291 blockcpy_or(pd, HighCol+8, len, 0x40);
\r
1294 blockcpy(pd, HighCol+8, len);
\r
1298 static void (*FinalizeLine)(int sh) = FinalizeLineBGR444;
\r
1300 // --------------------------------------------
\r
1302 static void DrawBlankedLine(void)
\r
1304 int sh=(Pico.video.reg[0xC]&8)>>3; // shadow/hilight?
\r
1306 if (PicoScanBegin != NULL)
\r
1307 PicoScanBegin(DrawScanline);
\r
1309 BackFill(Pico.video.reg[7], sh);
\r
1311 if (FinalizeLine != NULL)
\r
1314 if (PicoScanEnd != NULL)
\r
1315 PicoScanEnd(DrawScanline);
\r
1318 static int DrawDisplay(int sh)
\r
1320 unsigned char *sprited = &HighLnSpr[DrawScanline][0];
\r
1321 struct PicoVideo *pvid=&Pico.video;
\r
1322 int win=0,edge=0,hvwind=0;
\r
1323 int maxw,maxcells;
\r
1325 rendstatus &= ~(PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO);
\r
1327 if (pvid->reg[12]&1) {
\r
1328 maxw = 328; maxcells = 40;
\r
1330 maxw = 264; maxcells = 32;
\r
1333 // Find out if the window is on this line:
\r
1334 win=pvid->reg[0x12];
\r
1335 edge=(win&0x1f)<<3;
\r
1337 if (win&0x80) { if (DrawScanline>=edge) hvwind=1; }
\r
1338 else { if (DrawScanline< edge) hvwind=1; }
\r
1340 if (!hvwind) // we might have a vertical window here
\r
1342 win=pvid->reg[0x11];
\r
1345 if (!edge) hvwind=1;
\r
1346 else if(edge < (maxcells>>1)) hvwind=2;
\r
1349 else if(edge < (maxcells>>1)) hvwind=2;
\r
1354 /* - layer B low - */
\r
1355 if (PicoDrawMask & PDRAW_LAYERB_ON)
\r
1356 DrawLayer(1|(sh<<1), HighCacheB, 0, maxcells);
\r
1357 /* - layer A low - */
\r
1358 if (!(PicoDrawMask & PDRAW_LAYERA_ON));
\r
1359 else if (hvwind == 1)
\r
1360 DrawWindow(0, maxcells>>1, 0, sh);
\r
1361 else if (hvwind == 2) {
\r
1362 DrawLayer(0|(sh<<1), HighCacheA, (win&0x80) ? 0 : edge<<1, (win&0x80) ? edge<<1 : maxcells);
\r
1363 DrawWindow( (win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh);
\r
1365 DrawLayer(0|(sh<<1), HighCacheA, 0, maxcells);
\r
1366 /* - sprites low - */
\r
1367 if (!(PicoDrawMask & PDRAW_SPRITES_LOW_ON));
\r
1368 else if (rendstatus & PDRAW_INTERLACE)
\r
1369 DrawAllSpritesInterlace(0, sh);
\r
1370 else if (sprited[1] & SPRL_HAVE_LO)
\r
1371 DrawAllSprites(sprited, 0, sh);
\r
1373 /* - layer B hi - */
\r
1374 if ((PicoDrawMask & PDRAW_LAYERB_ON) && HighCacheB[0])
\r
1375 DrawTilesFromCache(HighCacheB, sh, maxw);
\r
1376 /* - layer A hi - */
\r
1377 if (!(PicoDrawMask & PDRAW_LAYERA_ON));
\r
1378 else if (hvwind == 1)
\r
1379 DrawWindow(0, maxcells>>1, 1, sh);
\r
1380 else if (hvwind == 2) {
\r
1381 if (HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, (win&0x80) ? edge<<4 : maxw);
\r
1382 DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh);
\r
1384 if (HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, maxw);
\r
1385 /* - sprites hi - */
\r
1386 if (!(PicoDrawMask & PDRAW_SPRITES_HI_ON));
\r
1387 else if (rendstatus & PDRAW_INTERLACE)
\r
1388 DrawAllSpritesInterlace(1, sh);
\r
1389 // have sprites without layer pri bit ontop of sprites with that bit
\r
1390 else if ((sprited[1] & 0xd0) == 0xd0 && (PicoOpt & POPT_ACC_SPRITES))
\r
1391 DrawSpritesHiAS(sprited, sh);
\r
1392 else if (sh && (sprited[1] & SPRL_MAY_HAVE_OP))
\r
1393 DrawSpritesSHi(sprited);
\r
1394 else if (sprited[1] & SPRL_HAVE_HI)
\r
1395 DrawAllSprites(sprited, 1, 0);
\r
1400 for (a = 0, c = HighCacheA; *c; c++, a++);
\r
1401 for (b = 0, c = HighCacheB; *c; c++, b++);
\r
1402 printf("%i:%03i: a=%i, b=%i\n", Pico.m.frame_count, DrawScanline, a, b);
\r
1409 // MUST be called every frame
\r
1410 PICO_INTERNAL void PicoFrameStart(void)
\r
1412 // prepare to do this frame
\r
1414 if ((Pico.video.reg[12]&6) == 6)
\r
1415 rendstatus |= PDRAW_INTERLACE; // interlace mode
\r
1417 if (Pico.m.dirtyPal) Pico.m.dirtyPal = 2; // reset dirty if needed
\r
1420 PrepareSprites(1);
\r
1424 static void PicoLine(void)
\r
1427 if (skip_next_line>0) { skip_next_line--; return; } // skip rendering lines
\r
1429 sh=(Pico.video.reg[0xC]&8)>>3; // shadow/hilight?
\r
1431 if (PicoScanBegin != NULL)
\r
1432 skip_next_line = PicoScanBegin(DrawScanline);
\r
1435 BackFill(Pico.video.reg[7], sh);
\r
1436 if (Pico.video.reg[1]&0x40)
\r
1439 if (FinalizeLine != NULL)
\r
1442 if (PicoScanEnd != NULL)
\r
1443 skip_next_line = PicoScanEnd(DrawScanline);
\r
1446 void PicoDrawSync(int to, int blank_last_line)
\r
1448 for (; DrawScanline < to; DrawScanline++)
\r
1450 #if !CAN_HANDLE_240_LINES
\r
1451 if (DrawScanline >= 224) break;
\r
1456 #if !CAN_HANDLE_240_LINES
\r
1457 if (DrawScanline >= 224) { DrawScanline = 240; return; }
\r
1461 if (DrawScanline <= to)
\r
1463 if (blank_last_line)
\r
1464 DrawBlankedLine();
\r
1470 void PicoDrawSetColorFormat(int which)
\r
1474 case 2: FinalizeLine = FinalizeLine8bit; break;
\r
1475 case 1: FinalizeLine = FinalizeLineRGB555; break;
\r
1476 case 0: FinalizeLine = FinalizeLineBGR444; break;
\r
1477 default:FinalizeLine = NULL; break;
\r
1479 #if OVERRIDE_HIGHCOL
\r
1480 if (which) HighCol=DefHighCol;
\r