3 * (c) Copyright Dave, 2004
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4 * (C) notaz, 2006-2010
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6 * This work is licensed under the terms of MAME license.
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7 * See COPYING file in the top-level directory.
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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 * since renderer always draws line in 8bit mode, there are 2 spare bits:
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21 * b \ mode: s/h as sonic
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22 * 00 normal - pal index
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23 * 01 shadow - pal index
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24 * 10 hilight+op spr spr pal index
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25 * 11 shadow +op spr - pal index
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27 * not handled properly:
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28 * - hilight op on shadow tile
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29 * - AS + s/h (s/h sprite flag interferes with and cleared by AS code)
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32 #include "pico_int.h"
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34 int (*PicoScanBegin)(unsigned int num) = NULL;
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35 int (*PicoScanEnd) (unsigned int num) = NULL;
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37 static unsigned char DefHighCol[8+320+8];
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38 static unsigned char *HighColBase = DefHighCol;
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39 static int HighColIncrement;
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41 static unsigned int DefOutBuff[320*2/2];
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42 void *DrawLineDestBase = DefOutBuff;
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43 int DrawLineDestIncrement;
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45 static int HighCacheA[41+1]; // caches for high layers
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46 static int HighCacheB[41+1];
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47 static int HighPreSpr[80*2+1]; // slightly preprocessed sprites
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49 #define SPRL_HAVE_HI 0x80 // have hi priority sprites
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50 #define SPRL_HAVE_LO 0x40 // *lo*
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51 #define SPRL_MAY_HAVE_OP 0x20 // may have operator sprites on the line
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52 #define SPRL_LO_ABOVE_HI 0x10 // low priority sprites may be on top of hi
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53 unsigned char HighLnSpr[240][3 + MAX_LINE_SPRITES]; // sprite_count, ^flags, tile_count, [spritep]...
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57 int PicoDrawMask = -1;
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59 static int skip_next_line=0;
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61 //unsigned short ppt[] = { 0x0f11, 0x0ff1, 0x01f1, 0x011f, 0x01ff, 0x0f1f, 0x0f0e, 0x0e7c };
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65 int nametab; // Position in VRAM of name table (for this tile line)
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66 int line; // Line number in pixels 0x000-0x3ff within the virtual tilemap
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67 int hscroll; // Horizontal scroll value in pixels for the line
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68 int xmask; // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap
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69 int *hc; // cache for high tile codes and their positions
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70 int cells; // cells (tiles) to draw (32 col mode doesn't need to update whole 320)
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73 // stuff available in asm:
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75 void DrawWindow(int tstart, int tend, int prio, int sh,
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76 struct PicoEState *est);
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77 void DrawAllSprites(unsigned char *sprited, int prio, int sh,
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78 struct PicoEState *est);
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79 void DrawTilesFromCache(int *hc, int sh, int rlim,
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80 struct PicoEState *est);
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81 void DrawSpritesSHi(unsigned char *sprited, struct PicoEState *est);
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82 void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells,
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83 struct PicoEState *est);
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84 void *blockcpy(void *dst, const void *src, size_t n);
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85 void blockcpy_or(void *dst, void *src, size_t n, int pat);
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88 void blockcpy_or(void *dst, void *src, size_t n, int pat)
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90 unsigned char *pd = dst, *ps = src;
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92 *pd++ = (unsigned char) (*ps++ | pat);
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94 #define blockcpy memcpy
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98 #define TileNormMaker(funcname,pix_func) \
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99 static void funcname(int sx, unsigned int pack, int pal) \
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101 unsigned char *pd = Pico.est.HighCol + sx; \
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104 t = (pack&0x0000f000)>>12; pix_func(0); \
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105 t = (pack&0x00000f00)>> 8; pix_func(1); \
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106 t = (pack&0x000000f0)>> 4; pix_func(2); \
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107 t = (pack&0x0000000f) ; pix_func(3); \
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108 t = (pack&0xf0000000)>>28; pix_func(4); \
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109 t = (pack&0x0f000000)>>24; pix_func(5); \
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110 t = (pack&0x00f00000)>>20; pix_func(6); \
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111 t = (pack&0x000f0000)>>16; pix_func(7); \
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114 #define TileFlipMaker(funcname,pix_func) \
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115 static void funcname(int sx, unsigned int pack, int pal) \
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117 unsigned char *pd = Pico.est.HighCol + sx; \
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120 t = (pack&0x000f0000)>>16; pix_func(0); \
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121 t = (pack&0x00f00000)>>20; pix_func(1); \
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122 t = (pack&0x0f000000)>>24; pix_func(2); \
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123 t = (pack&0xf0000000)>>28; pix_func(3); \
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124 t = (pack&0x0000000f) ; pix_func(4); \
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125 t = (pack&0x000000f0)>> 4; pix_func(5); \
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126 t = (pack&0x00000f00)>> 8; pix_func(6); \
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127 t = (pack&0x0000f000)>>12; pix_func(7); \
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131 #ifdef _ASM_DRAW_C_AMIPS
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132 int TileNorm(int sx, unsigned int pack, int pal);
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133 int TileFlip(int sx, unsigned int pack, int pal);
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136 #define pix_just_write(x) \
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139 TileNormMaker(TileNorm,pix_just_write)
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140 TileFlipMaker(TileFlip,pix_just_write)
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144 #ifndef _ASM_DRAW_C
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146 // draw a sprite pixel, process operator colors
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147 #define pix_sh(x) \
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149 else if (t>=0xe) pd[x]=(pd[x]&0x3f)|(t<<6); /* c0 shadow, 80 hilight */ \
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152 TileNormMaker(TileNormSH, pix_sh)
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153 TileFlipMaker(TileFlipSH, pix_sh)
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155 // draw a sprite pixel, mark operator colors
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156 #define pix_sh_markop(x) \
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158 else if (t>=0xe) pd[x]|=0x80; \
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161 TileNormMaker(TileNormSH_markop, pix_sh_markop)
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162 TileFlipMaker(TileFlipSH_markop, pix_sh_markop)
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164 // process operator pixels only, apply only on low pri tiles and other op pixels
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165 #define pix_sh_onlyop(x) \
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166 if (t>=0xe && (pd[x]&0xc0)) \
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167 pd[x]=(pd[x]&0x3f)|(t<<6); /* c0 shadow, 80 hilight */ \
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169 TileNormMaker(TileNormSH_onlyop_lp, pix_sh_onlyop)
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170 TileFlipMaker(TileFlipSH_onlyop_lp, pix_sh_onlyop)
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174 // draw a sprite pixel (AS)
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175 #define pix_as(x) \
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176 if (t && !(pd[x]&0x80)) pd[x]=pal|t
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178 TileNormMaker(TileNormAS, pix_as)
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179 TileFlipMaker(TileFlipAS, pix_as)
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181 // draw a sprite pixel, skip operator colors (AS)
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182 #define pix_sh_as_noop(x) \
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183 if (t && t < 0xe && !(pd[x]&0x80)) pd[x]=pal|t
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185 TileNormMaker(TileNormAS_noop, pix_sh_as_noop)
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186 TileFlipMaker(TileFlipAS_noop, pix_sh_as_noop)
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188 // mark pixel as sprite pixel (AS)
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189 #define pix_sh_as_onlymark(x) \
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192 TileNormMaker(TileNormAS_onlymark, pix_sh_as_onlymark)
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193 TileFlipMaker(TileFlipAS_onlymark, pix_sh_as_onlymark)
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196 // --------------------------------------------
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198 #ifndef _ASM_DRAW_C
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199 static void DrawStrip(struct TileStrip *ts, int plane_sh, int cellskip)
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201 int tilex,dx,ty,code=0,addr=0,cells;
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202 int oldcode=-1,blank=-1; // The tile we know is blank
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205 // Draw tiles across screen:
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206 sh=(plane_sh<<5)&0x40;
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207 tilex=((-ts->hscroll)>>3)+cellskip;
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208 ty=(ts->line&7)<<1; // Y-Offset into tile
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209 dx=((ts->hscroll-1)&7)+1;
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210 cells = ts->cells - cellskip;
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211 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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214 for (; cells > 0; dx+=8,tilex++,cells--)
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218 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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219 if (code==blank) continue;
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220 if (code>>15) { // high priority tile
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221 int cval = code | (dx<<16) | (ty<<25);
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222 if(code&0x1000) cval^=7<<26;
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223 *ts->hc++ = cval; // cache it
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227 if (code!=oldcode) {
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229 // Get tile address/2:
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230 addr=(code&0x7ff)<<4;
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232 if (code&0x1000) addr^=0xe; // Y-flip
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234 pal=((code>>9)&0x30)|sh;
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237 pack = *(unsigned int *)(Pico.vram + addr);
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243 if (code & 0x0800) TileFlip(dx, pack, pal);
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244 else TileNorm(dx, pack, pal);
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247 // terminate the cache list
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249 // if oldcode wasn't changed, it means all layer is hi priority
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250 if (oldcode == -1) Pico.est.rendstatus |= PDRAW_PLANE_HI_PRIO;
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254 static void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
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256 int tilex,dx,code=0,addr=0,cell=0;
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257 int oldcode=-1,blank=-1; // The tile we know is blank
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258 int pal=0,scan=Pico.est.DrawScanline;
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260 // Draw tiles across screen:
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261 tilex=(-ts->hscroll)>>3;
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262 dx=((ts->hscroll-1)&7)+1;
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263 if(dx != 8) cell--; // have hscroll, start with negative cell
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268 for (; cell < ts->cells; dx+=8,tilex++,cell++)
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270 int nametabadd, ty;
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276 vscroll=Pico.vsram[(plane_sh&1)+(cell&~1)];
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278 // Find the line in the name table
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279 line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..
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280 nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width]
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281 ty=(line&7)<<1; // Y-Offset into tile
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284 code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];
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285 if (code==blank) continue;
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286 if (code>>15) { // high priority tile
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287 int cval = code | (dx<<16) | (ty<<25);
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288 if(code&0x1000) cval^=7<<26;
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289 *ts->hc++ = cval; // cache it
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293 if (code!=oldcode) {
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295 // Get tile address/2:
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296 addr=(code&0x7ff)<<4;
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297 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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299 pal=((code>>9)&0x30)|((plane_sh<<5)&0x40);
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302 pack = *(unsigned int *)(Pico.vram + addr);
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308 if (code & 0x0800) TileFlip(dx, pack, pal);
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309 else TileNorm(dx, pack, pal);
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312 // terminate the cache list
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314 if (oldcode == -1) Pico.est.rendstatus |= PDRAW_PLANE_HI_PRIO;
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318 #ifndef _ASM_DRAW_C
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321 void DrawStripInterlace(struct TileStrip *ts)
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323 int tilex=0,dx=0,ty=0,code=0,addr=0,cells;
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324 int oldcode=-1,blank=-1; // The tile we know is blank
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327 // Draw tiles across screen:
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328 tilex=(-ts->hscroll)>>3;
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329 ty=(ts->line&15)<<1; // Y-Offset into tile
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330 dx=((ts->hscroll-1)&7)+1;
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332 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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334 for (; cells; dx+=8,tilex++,cells--)
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338 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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339 if (code==blank) continue;
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340 if (code>>15) { // high priority tile
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341 int cval = (code&0xfc00) | (dx<<16) | (ty<<25);
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342 cval|=(code&0x3ff)<<1;
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343 if(code&0x1000) cval^=0xf<<26;
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344 *ts->hc++ = cval; // cache it
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348 if (code!=oldcode) {
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350 // Get tile address/2:
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351 addr=(code&0x7ff)<<5;
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352 if (code&0x1000) addr+=30-ty; else addr+=ty; // Y-flip
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354 // pal=Pico.cram+((code>>9)&0x30);
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355 pal=((code>>9)&0x30);
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358 pack = *(unsigned int *)(Pico.vram + addr);
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364 if (code & 0x0800) TileFlip(dx, pack, pal);
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365 else TileNorm(dx, pack, pal);
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368 // terminate the cache list
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372 // --------------------------------------------
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374 #ifndef _ASM_DRAW_C
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375 static void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells,
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376 struct PicoEState *est)
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378 struct PicoVideo *pvid=&Pico.video;
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379 const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid)
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380 struct TileStrip ts;
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381 int width, height, ymask;
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387 // Work out the TileStrip to draw
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389 // Work out the name table size: 32 64 or 128 tiles (0-3)
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390 width=pvid->reg[16];
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391 height=(width>>4)&3; width&=3;
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393 ts.xmask=(1<<shift[width])-1; // X Mask in tiles (0x1f-0x7f)
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394 ymask=(height<<8)|0xff; // Y Mask in pixels
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396 case 1: ymask &= 0x1ff; break;
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397 case 2: ymask = 0x007; break;
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398 case 3: ymask = 0x0ff; break;
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401 // Find name table:
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402 if (plane_sh&1) ts.nametab=(pvid->reg[4]&0x07)<<12; // B
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403 else ts.nametab=(pvid->reg[2]&0x38)<< 9; // A
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405 htab=pvid->reg[13]<<9; // Horizontal scroll table address
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406 if ( pvid->reg[11]&2) htab+=est->DrawScanline<<1; // Offset by line
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407 if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile
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408 htab+=plane_sh&1; // A or B
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410 // Get horizontal scroll value, will be masked later
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411 ts.hscroll=Pico.vram[htab&0x7fff];
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413 if((pvid->reg[12]&6) == 6) {
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414 // interlace mode 2
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415 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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417 // Find the line in the name table
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418 ts.line=(vscroll+(est->DrawScanline<<1))&((ymask<<1)|1);
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419 ts.nametab+=(ts.line>>4)<<shift[width];
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421 DrawStripInterlace(&ts);
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422 } else if( pvid->reg[11]&4) {
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423 // shit, we have 2-cell column based vscroll
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424 // luckily this doesn't happen too often
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425 ts.line=ymask|(shift[width]<<24); // save some stuff instead of line
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426 DrawStripVSRam(&ts, plane_sh, cellskip);
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428 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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430 // Find the line in the name table
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431 ts.line=(vscroll+est->DrawScanline)&ymask;
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432 ts.nametab+=(ts.line>>3)<<shift[width];
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434 DrawStrip(&ts, plane_sh, cellskip);
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439 // --------------------------------------------
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441 // tstart & tend are tile pair numbers
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442 static void DrawWindow(int tstart, int tend, int prio, int sh,
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443 struct PicoEState *est)
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445 struct PicoVideo *pvid=&Pico.video;
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446 int tilex,ty,nametab,code=0;
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447 int blank=-1; // The tile we know is blank
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449 // Find name table line:
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450 if (pvid->reg[12]&1)
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452 nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode
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453 nametab+=(est->DrawScanline>>3)<<6;
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457 nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode
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458 nametab+=(est->DrawScanline>>3)<<5;
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463 if (!(est->rendstatus & PDRAW_WND_DIFF_PRIO)) {
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464 // check the first tile code
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465 code=Pico.vram[nametab+tilex];
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466 // if the whole window uses same priority (what is often the case), we may be able to skip this field
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467 if ((code>>15) != prio) return;
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471 ty=(est->DrawScanline&7)<<1; // Y-Offset into tile
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473 // Draw tiles across screen:
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476 for (; tilex < tend; tilex++)
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482 code=Pico.vram[nametab+tilex];
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483 if (code==blank) continue;
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484 if ((code>>15) != prio) {
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485 est->rendstatus |= PDRAW_WND_DIFF_PRIO;
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489 // Get tile address/2:
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490 addr=(code&0x7ff)<<4;
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491 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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493 pack = *(unsigned int *)(Pico.vram + addr);
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499 pal = ((code >> 9) & 0x30);
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500 dx = 8 + (tilex << 3);
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502 if (code & 0x0800) TileFlip(dx, pack, pal);
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503 else TileNorm(dx, pack, pal);
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508 for (; tilex < tend; tilex++)
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514 code=Pico.vram[nametab+tilex];
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515 if(code==blank) continue;
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516 if((code>>15) != prio) {
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517 est->rendstatus |= PDRAW_WND_DIFF_PRIO;
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521 pal=((code>>9)&0x30);
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524 int *zb = (int *)(est->HighCol+8+(tilex<<3));
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525 *zb++ &= 0xbfbfbfbf;
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531 // Get tile address/2:
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532 addr=(code&0x7ff)<<4;
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533 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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535 pack = *(unsigned int *)(Pico.vram + addr);
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541 dx = 8 + (tilex << 3);
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543 if (code & 0x0800) TileFlip(dx, pack, pal);
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544 else TileNorm(dx, pack, pal);
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549 // --------------------------------------------
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551 static void DrawTilesFromCacheShPrep(void)
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553 // as some layer has covered whole line with hi priority tiles,
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554 // we can process whole line and then act as if sh/hi mode was off,
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555 // but leave lo pri op sprite markers alone
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556 int c = 320/4, *zb = (int *)(Pico.est.HighCol+8);
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557 Pico.est.rendstatus |= PDRAW_SHHI_DONE;
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560 *zb++ &= 0xbfbfbfbf;
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564 static void DrawTilesFromCache(int *hc, int sh, int rlim, struct PicoEState *est)
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566 int code, addr, dx;
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570 // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it
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572 if (sh && (est->rendstatus & (PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO)))
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574 if (!(est->rendstatus & PDRAW_SHHI_DONE))
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575 DrawTilesFromCacheShPrep();
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581 short blank=-1; // The tile we know is blank
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582 while ((code=*hc++)) {
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583 if((short)code == blank) continue;
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584 // Get tile address/2:
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585 addr=(code&0x7ff)<<4;
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586 addr+=(unsigned int)code>>25; // y offset into tile
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588 pack = *(unsigned int *)(Pico.vram + addr);
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590 blank = (short)code;
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594 dx = (code >> 16) & 0x1ff;
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595 pal = ((code >> 9) & 0x30);
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597 goto last_cut_tile;
\r
599 if (code & 0x0800) TileFlip(dx, pack, pal);
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600 else TileNorm(dx, pack, pal);
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605 while ((code=*hc++)) {
\r
608 // Get tile address/2:
\r
609 addr=(code&0x7ff)<<4;
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610 addr+=(unsigned int)code>>25; // y offset into tile
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611 dx=(code>>16)&0x1ff;
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612 zb = est->HighCol+dx;
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613 *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf;
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614 *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf;
\r
616 pack = *(unsigned int *)(Pico.vram + addr);
\r
620 pal = ((code >> 9) & 0x30);
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622 goto last_cut_tile;
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624 if (code & 0x0800) TileFlip(dx, pack, pal);
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625 else TileNorm(dx, pack, pal);
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631 // for vertical window cutoff
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633 unsigned char *pd = est->HighCol + dx;
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640 case 7: t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8)); // "break" is left out intentionally
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641 case 6: t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));
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642 case 5: t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t ));
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643 case 4: t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));
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644 case 3: t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));
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645 case 2: t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));
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646 case 1: t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));
\r
654 case 7: t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));
\r
655 case 6: t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));
\r
656 case 5: t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));
\r
657 case 4: t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t ));
\r
658 case 3: t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));
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659 case 2: t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));
\r
660 case 1: t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));
\r
667 // --------------------------------------------
\r
669 // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size
\r
670 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
672 static void DrawSprite(int *sprite, int sh)
\r
674 int width=0,height=0;
\r
677 int tile=0,delta=0;
\r
679 void (*fTileFunc)(int sx, unsigned int pack, int pal);
\r
681 // parse the sprite data
\r
686 height=(sy>>24)&7; // Width and height in tiles
\r
687 sy=(sy<<16)>>16; // Y
\r
689 row=Pico.est.DrawScanline-sy; // Row of the sprite we are on
\r
691 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
693 tile=code + (row>>3); // Tile number increases going down
\r
694 delta=height; // Delta to increase tile by going right
\r
695 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
697 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
698 delta<<=4; // Delta of address
\r
700 pal=(code>>9)&0x30;
\r
703 if (sh && (code&0x6000) == 0x6000) {
\r
704 if(code&0x0800) fTileFunc=TileFlipSH_markop;
\r
705 else fTileFunc=TileNormSH_markop;
\r
707 if(code&0x0800) fTileFunc=TileFlip;
\r
708 else fTileFunc=TileNorm;
\r
711 for (; width; width--,sx+=8,tile+=delta)
\r
715 if(sx<=0) continue;
\r
716 if(sx>=328) break; // Offscreen
\r
718 pack = *(unsigned int *)(Pico.vram + (tile & 0x7fff));
\r
719 fTileFunc(sx, pack, pal);
\r
724 static void DrawSpriteInterlace(unsigned int *sprite)
\r
726 int width=0,height=0;
\r
729 int tile=0,delta=0;
\r
732 // parse the sprite data
\r
735 sy=(sy&0x3ff)-0x100; // Y
\r
736 width=(height>>2)&3; height&=3;
\r
737 width++; height++; // Width and height in tiles
\r
739 row=(Pico.est.DrawScanline<<1)-sy; // Row of the sprite we are on
\r
742 sx=((code>>16)&0x1ff)-0x78; // X
\r
744 if (code&0x1000) row^=(16<<height)-1; // Flip Y
\r
746 tile=code&0x3ff; // Tile number
\r
747 tile+=row>>4; // Tile number increases going down
\r
748 delta=height; // Delta to increase tile by going right
\r
749 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
751 tile<<=5; tile+=(row&15)<<1; // Tile address
\r
753 delta<<=5; // Delta of address
\r
754 pal=((code>>9)&0x30); // Get palette pointer
\r
756 for (; width; width--,sx+=8,tile+=delta)
\r
760 if(sx<=0) continue;
\r
761 if(sx>=328) break; // Offscreen
\r
763 pack = *(unsigned int *)(Pico.vram + (tile & 0x7fff));
\r
764 if (code & 0x0800) TileFlip(sx, pack, pal);
\r
765 else TileNorm(sx, pack, pal);
\r
770 static void DrawAllSpritesInterlace(int pri, int sh)
\r
772 struct PicoVideo *pvid=&Pico.video;
\r
773 int i,u,table,link=0,sline=Pico.est.DrawScanline<<1;
\r
774 unsigned int *sprites[80]; // Sprite index
\r
776 table=pvid->reg[5]&0x7f;
\r
777 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
778 table<<=8; // Get sprite table address/2
\r
780 for (i=u=0; u < 80 && i < 21; u++)
\r
782 unsigned int *sprite;
\r
783 int code, sx, sy, height;
\r
785 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
790 if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite
\r
792 // check if it is on this line
\r
793 sy = (code&0x3ff)-0x100;
\r
794 height = (((code>>24)&3)+1)<<4;
\r
795 if(sline < sy || sline >= sy+height) goto nextsprite; // no
\r
797 // check if sprite is not hidden offscreen
\r
798 sx = (sx>>16)&0x1ff;
\r
799 sx -= 0x78; // Get X coordinate + 8
\r
800 if(sx <= -8*3 || sx >= 328) goto nextsprite;
\r
802 // sprite is good, save it's pointer
\r
803 sprites[i++]=sprite;
\r
806 // Find next sprite
\r
807 link=(code>>16)&0x7f;
\r
808 if(!link) break; // End of sprites
\r
811 // Go through sprites backwards:
\r
812 for (i-- ;i>=0; i--)
\r
813 DrawSpriteInterlace(sprites[i]);
\r
817 #ifndef _ASM_DRAW_C
\r
819 * s/h drawing: lo_layers|40, lo_sprites|40 && mark_op,
\r
820 * hi_layers&=~40, hi_sprites
\r
822 * Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size
\r
823 * Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
825 static void DrawSpritesSHi(unsigned char *sprited, const struct PicoEState *est)
\r
827 void (*fTileFunc)(int sx, unsigned int pack, int pal);
\r
831 cnt = sprited[0] & 0x7f;
\r
832 if (cnt == 0) return;
\r
836 // Go through sprites backwards:
\r
837 for (cnt--; cnt >= 0; cnt--)
\r
839 int *sprite, code, pal, tile, sx, sy;
\r
840 int offs, delta, width, height, row;
\r
842 offs = (p[cnt] & 0x7f) * 2;
\r
843 sprite = est->HighPreSpr + offs;
\r
845 pal = (code>>9)&0x30;
\r
849 if (code & 0x8000) // hi priority
\r
851 if (code&0x800) fTileFunc=TileFlipSH;
\r
852 else fTileFunc=TileNormSH;
\r
854 if (code&0x800) fTileFunc=TileFlipSH_onlyop_lp;
\r
855 else fTileFunc=TileNormSH_onlyop_lp;
\r
858 if (!(code & 0x8000)) continue; // non-operator low sprite, already drawn
\r
859 if (code&0x800) fTileFunc=TileFlip;
\r
860 else fTileFunc=TileNorm;
\r
863 // parse remaining sprite data
\r
867 height=(sy>>24)&7; // Width and height in tiles
\r
868 sy=(sy<<16)>>16; // Y
\r
870 row=est->DrawScanline-sy; // Row of the sprite we are on
\r
872 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
874 tile=code + (row>>3); // Tile number increases going down
\r
875 delta=height; // Delta to increase tile by going right
\r
876 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
878 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
879 delta<<=4; // Delta of address
\r
881 for (; width; width--,sx+=8,tile+=delta)
\r
885 if(sx<=0) continue;
\r
886 if(sx>=328) break; // Offscreen
\r
888 pack = *(unsigned int *)(Pico.vram + (tile & 0x7fff));
\r
889 fTileFunc(sx, pack, pal);
\r
893 #endif // !_ASM_DRAW_C
\r
895 static void DrawSpritesHiAS(unsigned char *sprited, int sh)
\r
897 void (*fTileFunc)(int sx, unsigned int pack, int pal);
\r
899 int entry, cnt, sh_cnt = 0;
\r
901 cnt = sprited[0] & 0x7f;
\r
902 if (cnt == 0) return;
\r
904 Pico.est.rendstatus |= PDRAW_SPR_LO_ON_HI;
\r
908 // Go through sprites:
\r
909 for (entry = 0; entry < cnt; entry++)
\r
911 int *sprite, code, pal, tile, sx, sy;
\r
912 int offs, delta, width, height, row;
\r
914 offs = (p[entry] & 0x7f) * 2;
\r
915 sprite = HighPreSpr + offs;
\r
917 pal = (code>>9)&0x30;
\r
919 if (code & 0x8000) // hi priority
\r
921 if (sh && pal == 0x30)
\r
923 if (code&0x800) fTileFunc=TileFlipAS_noop;
\r
924 else fTileFunc=TileNormAS_noop;
\r
926 if (code&0x800) fTileFunc=TileFlipAS;
\r
927 else fTileFunc=TileNormAS;
\r
930 if (code&0x800) fTileFunc=TileFlipAS_onlymark;
\r
931 else fTileFunc=TileNormAS_onlymark;
\r
933 if (sh && pal == 0x30)
\r
934 p[sh_cnt++] = offs / 2; // re-save for sh/hi pass
\r
936 // parse remaining sprite data
\r
940 height=(sy>>24)&7; // Width and height in tiles
\r
941 sy=(sy<<16)>>16; // Y
\r
943 row=Pico.est.DrawScanline-sy; // Row of the sprite we are on
\r
945 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
947 tile=code + (row>>3); // Tile number increases going down
\r
948 delta=height; // Delta to increase tile by going right
\r
949 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
951 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
952 delta<<=4; // Delta of address
\r
955 for (; width; width--,sx+=8,tile+=delta)
\r
959 if(sx<=0) continue;
\r
960 if(sx>=328) break; // Offscreen
\r
962 pack = *(unsigned int *)(Pico.vram + (tile & 0x7fff));
\r
963 fTileFunc(sx, pack, pal);
\r
967 if (!sh || !(sprited[1]&SPRL_MAY_HAVE_OP)) return;
\r
969 /* nasty 1: remove 'sprite' flags */
\r
971 int c = 320/4/4, *zb = (int *)(Pico.est.HighCol+8);
\r
974 *zb++ &= 0x7f7f7f7f; *zb++ &= 0x7f7f7f7f;
\r
975 *zb++ &= 0x7f7f7f7f; *zb++ &= 0x7f7f7f7f;
\r
979 /* nasty 2: sh operator pass */
\r
980 sprited[0] = sh_cnt;
\r
981 DrawSpritesSHi(sprited, &Pico.est);
\r
985 // Index + 0 : ----hhvv -lllllll -------y yyyyyyyy
\r
986 // Index + 4 : -------x xxxxxxxx pccvhnnn nnnnnnnn
\r
988 // Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size
\r
989 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
991 static NOINLINE void PrepareSprites(int full)
\r
993 const struct PicoVideo *pvid=&Pico.video;
\r
994 const struct PicoEState *est=&Pico.est;
\r
997 int *pd = HighPreSpr;
\r
998 int max_lines = 224, max_sprites = 80, max_width = 328;
\r
999 int max_line_sprites = 20; // 20 sprites, 40 tiles
\r
1001 if (!(Pico.video.reg[12]&1))
\r
1002 max_sprites = 64, max_line_sprites = 16, max_width = 264;
\r
1003 if (PicoOpt & POPT_DIS_SPRITE_LIM)
\r
1004 max_line_sprites = MAX_LINE_SPRITES;
\r
1006 if (pvid->reg[1]&8) max_lines = 240;
\r
1007 sh = Pico.video.reg[0xC]&8; // shadow/hilight?
\r
1009 table=pvid->reg[5]&0x7f;
\r
1010 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
1011 table<<=8; // Get sprite table address/2
\r
1016 // updates: tilecode, sx
\r
1017 for (u=0; u < max_sprites && (pack = *pd); u++, pd+=2)
\r
1019 unsigned int *sprite;
\r
1020 int code2, sx, sy, height;
\r
1022 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
1024 // parse sprite info
\r
1025 code2 = sprite[1];
\r
1026 sx = (code2>>16)&0x1ff;
\r
1027 sx -= 0x78; // Get X coordinate + 8
\r
1028 sy = (pack << 16) >> 16;
\r
1029 height = (pack >> 24) & 0xf;
\r
1031 if (sy < max_lines &&
\r
1032 sy + (height<<3) > est->DrawScanline && // sprite onscreen (y)?
\r
1033 (sx > -24 || sx < max_width)) // onscreen x
\r
1035 int y = (sy >= est->DrawScanline) ? sy : est->DrawScanline;
\r
1036 int entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80);
\r
1037 for (; y < sy + (height<<3) && y < max_lines; y++)
\r
1040 cnt = HighLnSpr[y][0] & 0x7f;
\r
1041 if (cnt >= max_line_sprites) continue; // sprite limit?
\r
1043 for (i = 0; i < cnt; i++)
\r
1044 if (((HighLnSpr[y][3+i] ^ entry) & 0x7f) == 0) goto found;
\r
1046 // this sprite was previously missing
\r
1047 HighLnSpr[y][3+cnt] = entry;
\r
1048 HighLnSpr[y][0] = cnt + 1;
\r
1051 HighLnSpr[y][1] |= SPRL_HAVE_HI;
\r
1052 else HighLnSpr[y][1] |= SPRL_HAVE_LO;
\r
1056 code2 &= ~0xfe000000;
\r
1057 code2 -= 0x00780000; // Get X coordinate + 8 in upper 16 bits
\r
1060 // Find next sprite
\r
1061 link=(sprite[0]>>16)&0x7f;
\r
1062 if (!link) break; // End of sprites
\r
1067 for (u = 0; u < max_lines; u++)
\r
1068 *((int *)&HighLnSpr[u][0]) = 0;
\r
1070 for (u = 0; u < max_sprites; u++)
\r
1072 unsigned int *sprite;
\r
1073 int code, code2, sx, sy, hv, height, width;
\r
1075 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
1077 // parse sprite info
\r
1079 sy = (code&0x1ff)-0x80;
\r
1080 hv = (code>>24)&0xf;
\r
1081 height = (hv&3)+1;
\r
1083 width = (hv>>2)+1;
\r
1084 code2 = sprite[1];
\r
1085 sx = (code2>>16)&0x1ff;
\r
1086 sx -= 0x78; // Get X coordinate + 8
\r
1088 if (sy < max_lines && sy + (height<<3) > est->DrawScanline) // sprite onscreen (y)?
\r
1090 int entry, y, sx_min, onscr_x, maybe_op = 0;
\r
1092 sx_min = 8-(width<<3);
\r
1093 onscr_x = sx_min < sx && sx < max_width;
\r
1094 if (sh && (code2 & 0x6000) == 0x6000)
\r
1095 maybe_op = SPRL_MAY_HAVE_OP;
\r
1097 entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80);
\r
1098 y = (sy >= est->DrawScanline) ? sy : est->DrawScanline;
\r
1099 for (; y < sy + (height<<3) && y < max_lines; y++)
\r
1101 unsigned char *p = &HighLnSpr[y][0];
\r
1103 if (cnt >= max_line_sprites) continue; // sprite limit?
\r
1105 if (p[2] >= max_line_sprites*2) { // tile limit?
\r
1111 if (sx == -0x78) {
\r
1113 p[0] |= 0x80; // masked, no more sprites for this line
\r
1116 // must keep the first sprite even if it's offscreen, for masking
\r
1117 if (cnt > 0 && !onscr_x) continue; // offscreen x
\r
1121 p[1] |= (entry & 0x80) ? SPRL_HAVE_HI : SPRL_HAVE_LO;
\r
1122 p[1] |= maybe_op; // there might be op sprites on this line
\r
1123 if (cnt > 0 && (code2 & 0x8000) && !(p[3+cnt-1]&0x80))
\r
1124 p[1] |= SPRL_LO_ABOVE_HI;
\r
1128 *pd++ = (width<<28)|(height<<24)|(hv<<16)|((unsigned short)sy);
\r
1129 *pd++ = (sx<<16)|((unsigned short)code2);
\r
1131 // Find next sprite
\r
1132 link=(code>>16)&0x7f;
\r
1133 if (!link) break; // End of sprites
\r
1138 for (u = 0; u < max_lines; u++)
\r
1141 printf("c%03i: %2i, %2i: ", u, HighLnSpr[u][0] & 0x7f, HighLnSpr[u][2]);
\r
1142 for (y = 0; y < HighLnSpr[u][0] & 0x7f; y++)
\r
1143 printf(" %i", HighLnSpr[u][y+3]);
\r
1150 #ifndef _ASM_DRAW_C
\r
1151 static void DrawAllSprites(unsigned char *sprited, int prio, int sh,
\r
1152 struct PicoEState *est)
\r
1157 cnt = sprited[0] & 0x7f;
\r
1158 if (cnt == 0) return;
\r
1162 // Go through sprites backwards:
\r
1163 for (cnt--; cnt >= 0; cnt--)
\r
1166 if ((p[cnt] >> 7) != prio) continue;
\r
1167 offs = (p[cnt]&0x7f) * 2;
\r
1168 DrawSprite(HighPreSpr + offs, sh);
\r
1173 // --------------------------------------------
\r
1175 void BackFill(int reg7, int sh, struct PicoEState *est)
\r
1177 unsigned int back;
\r
1179 // Start with a blank scanline (background colour):
\r
1185 memset32((int *)(est->HighCol+8), back, 320/4);
\r
1189 // --------------------------------------------
\r
1191 #ifndef _ASM_DRAW_C
\r
1192 void PicoDoHighPal555(int sh, int line, struct PicoEState *est)
\r
1194 unsigned int *spal, *dpal;
\r
1195 unsigned int t, i;
\r
1197 Pico.m.dirtyPal = 0;
\r
1199 spal = (void *)Pico.cram;
\r
1200 dpal = (void *)est->HighPal;
\r
1202 for (i = 0; i < 0x40 / 2; i++) {
\r
1205 t = ((t & 0x000e000e)<< 1) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)<<4);
\r
1207 t = ((t & 0x000e000e)<<12) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)>>7);
\r
1209 // treat it like it was 4-bit per channel, since in s/h mode it somewhat is that.
\r
1210 // otherwise intensity difference between this and s/h will be wrong
\r
1211 t |= (t >> 4) & 0x08610861; // 0x18e318e3
\r
1215 // norm: xxx0, sh: 0xxx, hi: 0xxx + 7
\r
1218 // shadowed pixels
\r
1219 for (i = 0; i < 0x40 / 2; i++)
\r
1220 dpal[0x40/2 | i] = dpal[0xc0/2 | i] = (dpal[i] >> 1) & 0x738e738e;
\r
1221 // hilighted pixels
\r
1222 for (i = 0; i < 0x40 / 2; i++) {
\r
1223 t = ((dpal[i] >> 1) & 0x738e738e) + 0x738e738e; // 0x7bef7bef;
\r
1224 t |= (t >> 4) & 0x08610861;
\r
1225 dpal[0x80/2 | i] = t;
\r
1230 void FinalizeLine555(int sh, int line, struct PicoEState *est)
\r
1232 unsigned short *pd=est->DrawLineDest;
\r
1233 unsigned char *ps=est->HighCol+8;
\r
1234 unsigned short *pal=est->HighPal;
\r
1237 if (Pico.m.dirtyPal)
\r
1238 PicoDoHighPal555(sh, line, est);
\r
1240 if (Pico.video.reg[12]&1) {
\r
1243 if (!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1250 if (!sh && (est->rendstatus & PDRAW_SPR_LO_ON_HI))
\r
1251 mask=0x3f; // accurate sprites, upper bits are priority stuff
\r
1253 for (i = 0; i < len; i++)
\r
1254 pd[i] = pal[ps[i] & mask];
\r
1256 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1257 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1258 if (!sh && (est->rendstatus & PDRAW_SPR_LO_ON_HI))
\r
1259 amips_clut_6bit(pd, ps, pal, len);
\r
1260 else amips_clut(pd, ps, pal, len);
\r
1266 static void FinalizeLine8bit(int sh, int line, struct PicoEState *est)
\r
1268 unsigned char *pd = est->DrawLineDest;
\r
1269 int len, rs = est->rendstatus;
\r
1270 static int dirty_count;
\r
1272 if (!sh && Pico.m.dirtyPal == 1)
\r
1274 // a hack for mid-frame palette changes
\r
1275 if (!(rs & PDRAW_SONIC_MODE))
\r
1277 else dirty_count++;
\r
1278 rs |= PDRAW_SONIC_MODE;
\r
1279 est->rendstatus = rs;
\r
1280 if (dirty_count == 3) {
\r
1281 blockcpy(est->HighPal, Pico.cram, 0x40*2);
\r
1282 } else if (dirty_count == 11) {
\r
1283 blockcpy(est->HighPal+0x40, Pico.cram, 0x40*2);
\r
1287 if (Pico.video.reg[12]&1) {
\r
1290 if (!(PicoOpt & POPT_DIS_32C_BORDER))
\r
1295 if (!sh && (rs & PDRAW_SONIC_MODE)) {
\r
1296 if (dirty_count >= 11) {
\r
1297 blockcpy_or(pd, est->HighCol+8, len, 0x80);
\r
1299 blockcpy_or(pd, est->HighCol+8, len, 0x40);
\r
1302 blockcpy(pd, est->HighCol+8, len);
\r
1306 static void (*FinalizeLine)(int sh, int line, struct PicoEState *est);
\r
1308 // --------------------------------------------
\r
1310 static int DrawDisplay(int sh)
\r
1312 struct PicoEState *est=&Pico.est;
\r
1313 unsigned char *sprited = &HighLnSpr[est->DrawScanline][0];
\r
1314 struct PicoVideo *pvid=&Pico.video;
\r
1315 int win=0,edge=0,hvwind=0;
\r
1316 int maxw,maxcells;
\r
1318 if (est->rendstatus & (PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES)) {
\r
1319 // elprintf(EL_STATUS, "PrepareSprites(%i)", (est->rendstatus>>4)&1);
\r
1320 PrepareSprites(est->rendstatus & PDRAW_DIRTY_SPRITES);
\r
1321 est->rendstatus &= ~(PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES);
\r
1324 est->rendstatus &= ~(PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO);
\r
1326 if (pvid->reg[12]&1) {
\r
1327 maxw = 328; maxcells = 40;
\r
1329 maxw = 264; maxcells = 32;
\r
1332 // Find out if the window is on this line:
\r
1333 win=pvid->reg[0x12];
\r
1334 edge=(win&0x1f)<<3;
\r
1336 if (win&0x80) { if (est->DrawScanline>=edge) hvwind=1; }
\r
1337 else { if (est->DrawScanline< edge) hvwind=1; }
\r
1339 if (!hvwind) // we might have a vertical window here
\r
1341 win=pvid->reg[0x11];
\r
1344 if (!edge) hvwind=1;
\r
1345 else if(edge < (maxcells>>1)) hvwind=2;
\r
1348 else if(edge < (maxcells>>1)) hvwind=2;
\r
1353 /* - layer B low - */
\r
1354 if (PicoDrawMask & PDRAW_LAYERB_ON)
\r
1355 DrawLayer(1|(sh<<1), HighCacheB, 0, maxcells, est);
\r
1356 /* - layer A low - */
\r
1357 if (!(PicoDrawMask & PDRAW_LAYERA_ON));
\r
1358 else if (hvwind == 1)
\r
1359 DrawWindow(0, maxcells>>1, 0, sh, est);
\r
1360 else if (hvwind == 2) {
\r
1361 DrawLayer(0|(sh<<1), HighCacheA, (win&0x80) ? 0 : edge<<1, (win&0x80) ? edge<<1 : maxcells, est);
\r
1362 DrawWindow( (win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh, est);
\r
1364 DrawLayer(0|(sh<<1), HighCacheA, 0, maxcells, est);
\r
1365 /* - sprites low - */
\r
1366 if (!(PicoDrawMask & PDRAW_SPRITES_LOW_ON));
\r
1367 else if (est->rendstatus & PDRAW_INTERLACE)
\r
1368 DrawAllSpritesInterlace(0, sh);
\r
1369 else if (sprited[1] & SPRL_HAVE_LO)
\r
1370 DrawAllSprites(sprited, 0, sh, est);
\r
1372 /* - layer B hi - */
\r
1373 if ((PicoDrawMask & PDRAW_LAYERB_ON) && HighCacheB[0])
\r
1374 DrawTilesFromCache(HighCacheB, sh, maxw, est);
\r
1375 /* - layer A hi - */
\r
1376 if (!(PicoDrawMask & PDRAW_LAYERA_ON));
\r
1377 else if (hvwind == 1)
\r
1378 DrawWindow(0, maxcells>>1, 1, sh, est);
\r
1379 else if (hvwind == 2) {
\r
1380 if (HighCacheA[0])
\r
1381 DrawTilesFromCache(HighCacheA, sh, (win&0x80) ? edge<<4 : maxw, est);
\r
1382 DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh, est);
\r
1384 if (HighCacheA[0])
\r
1385 DrawTilesFromCache(HighCacheA, sh, maxw, est);
\r
1386 /* - sprites hi - */
\r
1387 if (!(PicoDrawMask & PDRAW_SPRITES_HI_ON));
\r
1388 else if (est->rendstatus & PDRAW_INTERLACE)
\r
1389 DrawAllSpritesInterlace(1, sh);
\r
1390 // have sprites without layer pri bit ontop of sprites with that bit
\r
1391 else if ((sprited[1] & 0xd0) == 0xd0 && (PicoOpt & POPT_ACC_SPRITES))
\r
1392 DrawSpritesHiAS(sprited, sh);
\r
1393 else if (sh && (sprited[1] & SPRL_MAY_HAVE_OP))
\r
1394 DrawSpritesSHi(sprited, est);
\r
1395 else if (sprited[1] & SPRL_HAVE_HI)
\r
1396 DrawAllSprites(sprited, 1, 0, est);
\r
1401 for (a = 0, c = HighCacheA; *c; c++, a++);
\r
1402 for (b = 0, c = HighCacheB; *c; c++, b++);
\r
1403 printf("%i:%03i: a=%i, b=%i\n", Pico.m.frame_count,
\r
1404 Pico.est.DrawScanline, a, b);
\r
1411 // MUST be called every frame
\r
1412 PICO_INTERNAL void PicoFrameStart(void)
\r
1414 int offs = 8, lines = 224;
\r
1416 // prepare to do this frame
\r
1417 Pico.est.rendstatus = 0;
\r
1418 if ((Pico.video.reg[12] & 6) == 6)
\r
1419 Pico.est.rendstatus |= PDRAW_INTERLACE; // interlace mode
\r
1420 if (!(Pico.video.reg[12] & 1))
\r
1421 Pico.est.rendstatus |= PDRAW_32_COLS;
\r
1422 if (Pico.video.reg[1] & 8) {
\r
1427 if (Pico.est.rendstatus != rendstatus_old || lines != rendlines) {
\r
1428 rendlines = lines;
\r
1429 // mode_change() might reset rendstatus_old by calling SetColorFormat
\r
1430 emu_video_mode_change((lines == 240) ? 0 : 8,
\r
1431 lines, (Pico.video.reg[12] & 1) ? 0 : 1);
\r
1432 rendstatus_old = Pico.est.rendstatus;
\r
1435 Pico.est.HighCol = HighColBase + offs * HighColIncrement;
\r
1436 Pico.est.DrawLineDest = (char *)DrawLineDestBase + offs * DrawLineDestIncrement;
\r
1437 Pico.est.DrawScanline = 0;
\r
1438 skip_next_line = 0;
\r
1440 if (PicoOpt & POPT_ALT_RENDERER)
\r
1443 if (Pico.m.dirtyPal)
\r
1444 Pico.m.dirtyPal = 2; // reset dirty if needed
\r
1445 PrepareSprites(1);
\r
1448 static void DrawBlankedLine(int line, int offs, int sh, int bgc)
\r
1450 if (PicoScanBegin != NULL)
\r
1451 PicoScanBegin(line + offs);
\r
1453 BackFill(bgc, sh, &Pico.est);
\r
1455 if (FinalizeLine != NULL)
\r
1456 FinalizeLine(sh, line, &Pico.est);
\r
1458 if (PicoScanEnd != NULL)
\r
1459 PicoScanEnd(line + offs);
\r
1461 Pico.est.HighCol += HighColIncrement;
\r
1462 Pico.est.DrawLineDest = (char *)Pico.est.DrawLineDest + DrawLineDestIncrement;
\r
1465 static void PicoLine(int line, int offs, int sh, int bgc)
\r
1469 if (skip_next_line > 0) {
\r
1474 Pico.est.DrawScanline = line;
\r
1475 if (PicoScanBegin != NULL)
\r
1476 skip = PicoScanBegin(line + offs);
\r
1479 skip_next_line = skip - 1;
\r
1484 BackFill(bgc, sh, &Pico.est);
\r
1485 if (Pico.video.reg[1]&0x40)
\r
1488 if (FinalizeLine != NULL)
\r
1489 FinalizeLine(sh, line, &Pico.est);
\r
1491 if (PicoScanEnd != NULL)
\r
1492 skip_next_line = PicoScanEnd(line + offs);
\r
1494 Pico.est.HighCol += HighColIncrement;
\r
1495 Pico.est.DrawLineDest = (char *)Pico.est.DrawLineDest + DrawLineDestIncrement;
\r
1498 void PicoDrawSync(int to, int blank_last_line)
\r
1500 int line, offs = 0;
\r
1501 int sh = (Pico.video.reg[0xC] & 8) >> 3; // shadow/hilight?
\r
1502 int bgc = Pico.video.reg[7];
\r
1504 pprof_start(draw);
\r
1506 if (rendlines != 240)
\r
1509 for (line = Pico.est.DrawScanline; line < to; line++)
\r
1511 PicoLine(line, offs, sh, bgc);
\r
1517 if (blank_last_line)
\r
1518 DrawBlankedLine(line, offs, sh, bgc);
\r
1519 else PicoLine(line, offs, sh, bgc);
\r
1522 Pico.est.DrawScanline = line;
\r
1527 // also works for fast renderer
\r
1528 void PicoDrawUpdateHighPal(void)
\r
1530 struct PicoEState *est = &Pico.est;
\r
1531 int sh = (Pico.video.reg[0xC] & 8) >> 3; // shadow/hilight?
\r
1532 if (PicoOpt & POPT_ALT_RENDERER)
\r
1533 sh = 0; // no s/h support
\r
1535 PicoDoHighPal555(sh, 0, &Pico.est);
\r
1536 if (est->rendstatus & PDRAW_SONIC_MODE) {
\r
1538 memcpy(est->HighPal + 0x40, est->HighPal, 0x40*2);
\r
1539 memcpy(est->HighPal + 0x80, est->HighPal, 0x40*2);
\r
1543 void PicoDrawSetOutFormat(pdso_t which, int use_32x_line_mode)
\r
1548 FinalizeLine = FinalizeLine8bit;
\r
1552 if ((PicoAHW & PAHW_32X) && use_32x_line_mode)
\r
1553 FinalizeLine = FinalizeLine32xRGB555;
\r
1555 FinalizeLine = FinalizeLine555;
\r
1559 FinalizeLine = NULL;
\r
1562 PicoDrawSetOutFormat32x(which, use_32x_line_mode);
\r
1563 PicoDrawSetOutputMode4(which);
\r
1564 rendstatus_old = -1;
\r
1567 // note: may be called on the middle of frame
\r
1568 void PicoDrawSetOutBuf(void *dest, int increment)
\r
1570 DrawLineDestBase = dest;
\r
1571 DrawLineDestIncrement = increment;
\r
1572 Pico.est.DrawLineDest = DrawLineDestBase + Pico.est.DrawScanline * increment;
\r
1575 void PicoDrawSetInternalBuf(void *dest, int increment)
\r
1577 if (dest != NULL) {
\r
1578 HighColBase = dest;
\r
1579 HighColIncrement = increment;
\r
1580 Pico.est.HighCol = HighColBase + Pico.est.DrawScanline * increment;
\r
1583 HighColBase = DefHighCol;
\r
1584 HighColIncrement = 0;
\r
1588 void PicoDrawSetCallbacks(int (*begin)(unsigned int num), int (*end)(unsigned int num))
\r
1590 PicoScanBegin = NULL;
\r
1591 PicoScanEnd = NULL;
\r
1592 PicoScan32xBegin = NULL;
\r
1593 PicoScan32xEnd = NULL;
\r
1595 if ((PicoAHW & PAHW_32X) && FinalizeLine != FinalizeLine32xRGB555) {
\r
1596 PicoScan32xBegin = begin;
\r
1597 PicoScan32xEnd = end;
\r
1600 PicoScanBegin = begin;
\r
1601 PicoScanEnd = end;
\r
1605 void PicoDrawInit(void)
\r
1607 Pico.est.DrawLineDest = DefOutBuff;
\r
1608 Pico.est.HighCol = HighColBase;
\r
1609 Pico.est.HighPreSpr = HighPreSpr;
\r
1610 rendstatus_old = -1;
\r
1613 // vim:ts=2:sw=2:expandtab
\r