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 * 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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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 #if OVERRIDE_HIGHCOL
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38 static unsigned char DefHighCol[8+320+8];
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39 unsigned char *HighCol=DefHighCol;
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41 unsigned char HighCol[8+320+8];
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43 static unsigned int DefOutBuff[320*2/2];
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44 void *DrawLineDest=DefOutBuff; // pointer to dest buffer where to draw this line to
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46 static int HighCacheA[41+1]; // caches for high layers
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47 static int HighCacheB[41+1];
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48 int HighPreSpr[80*2+1]; // slightly preprocessed sprites
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50 #define SPRL_HAVE_HI 0x80 // have hi priority sprites
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51 #define SPRL_HAVE_LO 0x40 // *lo*
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52 #define SPRL_MAY_HAVE_OP 0x20 // may have operator sprites on the line
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53 #define SPRL_LO_ABOVE_HI 0x10 // low priority sprites may be on top of hi
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54 unsigned char HighLnSpr[240][3 + MAX_LINE_SPRITES]; // sprite_count, ^flags, tile_count, [spritep]...
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56 int rendstatus, rendstatus_old;
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59 int PicoDrawMask = -1;
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61 static int skip_next_line=0;
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63 //unsigned short ppt[] = { 0x0f11, 0x0ff1, 0x01f1, 0x011f, 0x01ff, 0x0f1f, 0x0f0e, 0x0e7c };
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67 int nametab; // Position in VRAM of name table (for this tile line)
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68 int line; // Line number in pixels 0x000-0x3ff within the virtual tilemap
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69 int hscroll; // Horizontal scroll value in pixels for the line
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70 int xmask; // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap
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71 int *hc; // cache for high tile codes and their positions
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72 int cells; // cells (tiles) to draw (32 col mode doesn't need to update whole 320)
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75 // stuff available in asm:
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77 void DrawWindow(int tstart, int tend, int prio, int sh);
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78 void DrawAllSprites(unsigned char *sprited, int prio, int sh);
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79 void DrawTilesFromCache(int *hc, int sh, int rlim);
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80 void DrawSpritesSHi(unsigned char *sprited);
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81 void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells);
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82 void FinalizeLineBGR444(int sh, int line);
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83 void *blockcpy(void *dst, const void *src, size_t n);
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84 void blockcpy_or(void *dst, void *src, size_t n, int pat);
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87 void blockcpy_or(void *dst, void *src, size_t n, int pat)
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89 unsigned char *pd = dst, *ps = src;
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91 *pd++ = (unsigned char) (*ps++ | pat);
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93 #define blockcpy memcpy
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97 #define TileNormMaker(funcname,pix_func) \
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98 static int funcname(int sx,int addr,int pal) \
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100 unsigned char *pd = HighCol+sx; \
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101 unsigned int pack=0; unsigned int t=0; \
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103 pack=*(unsigned int *)(Pico.vram+addr); /* Get 8 pixels */ \
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106 t=(pack&0x0000f000)>>12; pix_func(0); \
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107 t=(pack&0x00000f00)>> 8; pix_func(1); \
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108 t=(pack&0x000000f0)>> 4; pix_func(2); \
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109 t=(pack&0x0000000f) ; pix_func(3); \
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110 t=(pack&0xf0000000)>>28; pix_func(4); \
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111 t=(pack&0x0f000000)>>24; pix_func(5); \
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112 t=(pack&0x00f00000)>>20; pix_func(6); \
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113 t=(pack&0x000f0000)>>16; pix_func(7); \
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117 return 1; /* Tile blank */ \
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121 #define TileFlipMaker(funcname,pix_func) \
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122 static int funcname(int sx,int addr,int pal) \
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124 unsigned char *pd = HighCol+sx; \
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125 unsigned int pack=0; unsigned int t=0; \
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127 pack=*(unsigned int *)(Pico.vram+addr); /* Get 8 pixels */ \
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130 t=(pack&0x000f0000)>>16; pix_func(0); \
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131 t=(pack&0x00f00000)>>20; pix_func(1); \
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132 t=(pack&0x0f000000)>>24; pix_func(2); \
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133 t=(pack&0xf0000000)>>28; pix_func(3); \
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134 t=(pack&0x0000000f) ; pix_func(4); \
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135 t=(pack&0x000000f0)>> 4; pix_func(5); \
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136 t=(pack&0x00000f00)>> 8; pix_func(6); \
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137 t=(pack&0x0000f000)>>12; pix_func(7); \
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141 return 1; /* Tile blank */ \
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145 #ifdef _ASM_DRAW_C_AMIPS
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146 int TileNorm(int sx,int addr,int pal);
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147 int TileFlip(int sx,int addr,int pal);
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150 #define pix_just_write(x) \
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153 TileNormMaker(TileNorm,pix_just_write)
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154 TileFlipMaker(TileFlip,pix_just_write)
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158 #ifndef _ASM_DRAW_C
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160 // draw a sprite pixel, process operator colors
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161 #define pix_sh(x) \
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163 else if (t>=0xe) pd[x]=(pd[x]&0x3f)|(t<<6); /* c0 shadow, 80 hilight */ \
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166 TileNormMaker(TileNormSH, pix_sh)
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167 TileFlipMaker(TileFlipSH, pix_sh)
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169 // draw a sprite pixel, mark operator colors
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170 #define pix_sh_markop(x) \
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172 else if (t>=0xe) pd[x]|=0x80; \
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175 TileNormMaker(TileNormSH_markop, pix_sh_markop)
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176 TileFlipMaker(TileFlipSH_markop, pix_sh_markop)
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178 // process operator pixels only, apply only on low pri tiles and other op pixels
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179 #define pix_sh_onlyop(x) \
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180 if (t>=0xe && (pd[x]&0xc0)) \
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181 pd[x]=(pd[x]&0x3f)|(t<<6); /* c0 shadow, 80 hilight */ \
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183 TileNormMaker(TileNormSH_onlyop_lp, pix_sh_onlyop)
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184 TileFlipMaker(TileFlipSH_onlyop_lp, pix_sh_onlyop)
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188 // draw a sprite pixel (AS)
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189 #define pix_as(x) \
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190 if (t && !(pd[x]&0x80)) pd[x]=pal|t
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192 TileNormMaker(TileNormAS, pix_as)
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193 TileFlipMaker(TileFlipAS, pix_as)
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195 // draw a sprite pixel, skip operator colors (AS)
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196 #define pix_sh_as_noop(x) \
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197 if (t && t < 0xe && !(pd[x]&0x80)) pd[x]=pal|t
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199 TileNormMaker(TileNormAS_noop, pix_sh_as_noop)
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200 TileFlipMaker(TileFlipAS_noop, pix_sh_as_noop)
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202 // mark pixel as sprite pixel (AS)
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203 #define pix_sh_as_onlymark(x) \
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206 TileNormMaker(TileNormAS_onlymark, pix_sh_as_onlymark)
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207 TileFlipMaker(TileFlipAS_onlymark, pix_sh_as_onlymark)
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210 // --------------------------------------------
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212 #ifndef _ASM_DRAW_C
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213 static void DrawStrip(struct TileStrip *ts, int plane_sh, int cellskip)
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215 int tilex,dx,ty,code=0,addr=0,cells;
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216 int oldcode=-1,blank=-1; // The tile we know is blank
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219 // Draw tiles across screen:
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220 sh=(plane_sh<<5)&0x40;
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221 tilex=((-ts->hscroll)>>3)+cellskip;
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222 ty=(ts->line&7)<<1; // Y-Offset into tile
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223 dx=((ts->hscroll-1)&7)+1;
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224 cells = ts->cells - cellskip;
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225 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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228 for (; cells > 0; dx+=8,tilex++,cells--)
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232 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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233 if (code==blank) continue;
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234 if (code>>15) { // high priority tile
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235 int cval = code | (dx<<16) | (ty<<25);
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236 if(code&0x1000) cval^=7<<26;
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237 *ts->hc++ = cval; // cache it
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241 if (code!=oldcode) {
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243 // Get tile address/2:
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244 addr=(code&0x7ff)<<4;
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246 if (code&0x1000) addr^=0xe; // Y-flip
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248 pal=((code>>9)&0x30)|sh;
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251 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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252 else zero=TileNorm(dx,addr,pal);
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254 if (zero) blank=code; // We know this tile is blank now
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257 // terminate the cache list
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259 // if oldcode wasn't changed, it means all layer is hi priority
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260 if (oldcode == -1) rendstatus |= PDRAW_PLANE_HI_PRIO;
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264 void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
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266 int tilex,dx,code=0,addr=0,cell=0;
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267 int oldcode=-1,blank=-1; // The tile we know is blank
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268 int pal=0,scan=DrawScanline;
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270 // Draw tiles across screen:
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271 tilex=(-ts->hscroll)>>3;
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272 dx=((ts->hscroll-1)&7)+1;
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273 if(dx != 8) cell--; // have hscroll, start with negative cell
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278 for (; cell < ts->cells; dx+=8,tilex++,cell++)
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280 int zero=0,nametabadd,ty;
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285 vscroll=Pico.vsram[(plane_sh&1)+(cell&~1)];
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287 // Find the line in the name table
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288 line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..
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289 nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width]
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290 ty=(line&7)<<1; // Y-Offset into tile
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293 code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];
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294 if (code==blank) continue;
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295 if (code>>15) { // high priority tile
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296 int cval = code | (dx<<16) | (ty<<25);
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297 if(code&0x1000) cval^=7<<26;
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298 *ts->hc++ = cval; // cache it
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302 if (code!=oldcode) {
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304 // Get tile address/2:
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305 addr=(code&0x7ff)<<4;
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306 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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308 pal=((code>>9)&0x30)|((plane_sh<<5)&0x40);
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311 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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312 else zero=TileNorm(dx,addr,pal);
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314 if (zero) blank=code; // We know this tile is blank now
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317 // terminate the cache list
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319 if (oldcode == -1) rendstatus |= PDRAW_PLANE_HI_PRIO;
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323 #ifndef _ASM_DRAW_C
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326 void DrawStripInterlace(struct TileStrip *ts)
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328 int tilex=0,dx=0,ty=0,code=0,addr=0,cells;
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329 int oldcode=-1,blank=-1; // The tile we know is blank
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332 // Draw tiles across screen:
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333 tilex=(-ts->hscroll)>>3;
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334 ty=(ts->line&15)<<1; // Y-Offset into tile
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335 dx=((ts->hscroll-1)&7)+1;
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337 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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339 for (; cells; dx+=8,tilex++,cells--)
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343 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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344 if (code==blank) continue;
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345 if (code>>15) { // high priority tile
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346 int cval = (code&0xfc00) | (dx<<16) | (ty<<25);
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347 cval|=(code&0x3ff)<<1;
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348 if(code&0x1000) cval^=0xf<<26;
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349 *ts->hc++ = cval; // cache it
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353 if (code!=oldcode) {
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355 // Get tile address/2:
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356 addr=(code&0x7ff)<<5;
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357 if (code&0x1000) addr+=30-ty; else addr+=ty; // Y-flip
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359 // pal=Pico.cram+((code>>9)&0x30);
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360 pal=((code>>9)&0x30);
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363 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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364 else zero=TileNorm(dx,addr,pal);
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366 if (zero) blank=code; // We know this tile is blank now
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369 // terminate the cache list
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373 // --------------------------------------------
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375 #ifndef _ASM_DRAW_C
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376 static void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells)
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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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395 if(width == 1) ymask&=0x1ff;
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396 else if(width>1) ymask =0x0ff;
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398 // Find name table:
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399 if (plane_sh&1) ts.nametab=(pvid->reg[4]&0x07)<<12; // B
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400 else ts.nametab=(pvid->reg[2]&0x38)<< 9; // A
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402 htab=pvid->reg[13]<<9; // Horizontal scroll table address
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403 if ( pvid->reg[11]&2) htab+=DrawScanline<<1; // Offset by line
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404 if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile
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405 htab+=plane_sh&1; // A or B
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407 // Get horizontal scroll value, will be masked later
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408 ts.hscroll=Pico.vram[htab&0x7fff];
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410 if((pvid->reg[12]&6) == 6) {
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411 // interlace mode 2
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412 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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414 // Find the line in the name table
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415 ts.line=(vscroll+(DrawScanline<<1))&((ymask<<1)|1);
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416 ts.nametab+=(ts.line>>4)<<shift[width];
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418 DrawStripInterlace(&ts);
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419 } else if( pvid->reg[11]&4) {
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420 // shit, we have 2-cell column based vscroll
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421 // luckily this doesn't happen too often
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422 ts.line=ymask|(shift[width]<<24); // save some stuff instead of line
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423 DrawStripVSRam(&ts, plane_sh, cellskip);
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425 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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427 // Find the line in the name table
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428 ts.line=(vscroll+DrawScanline)&ymask;
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429 ts.nametab+=(ts.line>>3)<<shift[width];
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431 DrawStrip(&ts, plane_sh, cellskip);
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436 // --------------------------------------------
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438 // tstart & tend are tile pair numbers
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439 static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
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441 struct PicoVideo *pvid=&Pico.video;
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442 int tilex,ty,nametab,code=0;
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443 int blank=-1; // The tile we know is blank
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445 // Find name table line:
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446 if (pvid->reg[12]&1)
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448 nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode
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449 nametab+=(DrawScanline>>3)<<6;
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453 nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode
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454 nametab+=(DrawScanline>>3)<<5;
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459 if (!(rendstatus & PDRAW_WND_DIFF_PRIO)) {
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460 // check the first tile code
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461 code=Pico.vram[nametab+tilex];
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462 // if the whole window uses same priority (what is often the case), we may be able to skip this field
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463 if ((code>>15) != prio) return;
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467 ty=(DrawScanline&7)<<1; // Y-Offset into tile
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469 // Draw tiles across screen:
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472 for (; tilex < tend; tilex++)
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477 code=Pico.vram[nametab+tilex];
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478 if (code==blank) continue;
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479 if ((code>>15) != prio) {
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480 rendstatus |= PDRAW_WND_DIFF_PRIO;
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484 pal=((code>>9)&0x30);
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486 // Get tile address/2:
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487 addr=(code&0x7ff)<<4;
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488 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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490 if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
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491 else zero=TileNorm(8+(tilex<<3),addr,pal);
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493 if (zero) blank=code; // We know this tile is blank now
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498 for (; tilex < tend; tilex++)
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503 code=Pico.vram[nametab+tilex];
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504 if(code==blank) continue;
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505 if((code>>15) != prio) {
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506 rendstatus |= PDRAW_WND_DIFF_PRIO;
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510 pal=((code>>9)&0x30);
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513 int *zb = (int *)(HighCol+8+(tilex<<3));
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514 *zb++ &= 0xbfbfbfbf;
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520 // Get tile address/2:
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521 addr=(code&0x7ff)<<4;
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522 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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524 if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
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525 else zero=TileNorm(8+(tilex<<3),addr,pal);
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527 if (zero) blank=code; // We know this tile is blank now
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532 // --------------------------------------------
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534 static void DrawTilesFromCacheShPrep(void)
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536 // as some layer has covered whole line with hi priority tiles,
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537 // we can process whole line and then act as if sh/hi mode was off,
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538 // but leave lo pri op sprite markers alone
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539 int c = 320/4, *zb = (int *)(HighCol+8);
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540 rendstatus |= PDRAW_SHHI_DONE;
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543 *zb++ &= 0xbfbfbfbf;
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547 static void DrawTilesFromCache(int *hc, int sh, int rlim)
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549 int code, addr, dx;
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552 // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it
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554 if (sh && (rendstatus & (PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO)))
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556 if (!(rendstatus & PDRAW_SHHI_DONE))
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557 DrawTilesFromCacheShPrep();
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563 short blank=-1; // The tile we know is blank
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564 while ((code=*hc++)) {
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566 if((short)code == blank) continue;
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567 // Get tile address/2:
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568 addr=(code&0x7ff)<<4;
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569 addr+=(unsigned int)code>>25; // y offset into tile
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570 dx=(code>>16)&0x1ff;
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572 pal=((code>>9)&0x30);
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573 if (rlim-dx < 0) goto last_cut_tile;
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575 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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576 else zero=TileNorm(dx,addr,pal);
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578 if (zero) blank=(short)code;
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583 while ((code=*hc++)) {
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585 // Get tile address/2:
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586 addr=(code&0x7ff)<<4;
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587 addr+=(unsigned int)code>>25; // y offset into tile
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588 dx=(code>>16)&0x1ff;
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590 *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf;
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591 *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf; *zb++ &= 0xbf;
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593 pal=((code>>9)&0x30);
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594 if (rlim-dx < 0) goto last_cut_tile;
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596 if (code&0x0800) TileFlip(dx,addr,pal);
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597 else TileNorm(dx,addr,pal);
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604 unsigned int t, pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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605 unsigned char *pd = HighCol+dx;
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611 case 7: t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8)); // "break" is left out intentionally
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612 case 6: t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));
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613 case 5: t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t ));
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614 case 4: t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));
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615 case 3: t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));
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616 case 2: t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));
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617 case 1: t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));
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625 case 7: t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));
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626 case 6: t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));
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627 case 5: t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));
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628 case 4: t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t ));
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629 case 3: t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));
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630 case 2: t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));
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631 case 1: t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));
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638 // --------------------------------------------
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640 // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size
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641 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
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643 static void DrawSprite(int *sprite, int sh)
\r
645 int width=0,height=0;
\r
648 int tile=0,delta=0;
\r
650 int (*fTileFunc)(int sx,int addr,int pal);
\r
652 // parse the sprite data
\r
657 height=(sy>>24)&7; // Width and height in tiles
\r
658 sy=(sy<<16)>>16; // Y
\r
660 row=DrawScanline-sy; // Row of the sprite we are on
\r
662 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
664 tile=code + (row>>3); // Tile number increases going down
\r
665 delta=height; // Delta to increase tile by going right
\r
666 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
668 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
669 delta<<=4; // Delta of address
\r
671 pal=(code>>9)&0x30;
\r
674 if (sh && (code&0x6000) == 0x6000) {
\r
675 if(code&0x0800) fTileFunc=TileFlipSH_markop;
\r
676 else fTileFunc=TileNormSH_markop;
\r
678 if(code&0x0800) fTileFunc=TileFlip;
\r
679 else fTileFunc=TileNorm;
\r
682 for (; width; width--,sx+=8,tile+=delta)
\r
684 if(sx<=0) continue;
\r
685 if(sx>=328) break; // Offscreen
\r
687 tile&=0x7fff; // Clip tile address
\r
688 fTileFunc(sx,tile,pal);
\r
693 static void DrawSpriteInterlace(unsigned int *sprite)
\r
695 int width=0,height=0;
\r
698 int tile=0,delta=0;
\r
701 // parse the sprite data
\r
704 sy=(sy&0x3ff)-0x100; // Y
\r
705 width=(height>>2)&3; height&=3;
\r
706 width++; height++; // Width and height in tiles
\r
708 row=(DrawScanline<<1)-sy; // Row of the sprite we are on
\r
711 sx=((code>>16)&0x1ff)-0x78; // X
\r
713 if (code&0x1000) row^=(16<<height)-1; // Flip Y
\r
715 tile=code&0x3ff; // Tile number
\r
716 tile+=row>>4; // Tile number increases going down
\r
717 delta=height; // Delta to increase tile by going right
\r
718 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
720 tile<<=5; tile+=(row&15)<<1; // Tile address
\r
722 delta<<=5; // Delta of address
\r
723 pal=((code>>9)&0x30); // Get palette pointer
\r
725 for (; width; width--,sx+=8,tile+=delta)
\r
727 if(sx<=0) continue;
\r
728 if(sx>=328) break; // Offscreen
\r
730 tile&=0x7fff; // Clip tile address
\r
731 if (code&0x0800) TileFlip(sx,tile,pal);
\r
732 else TileNorm(sx,tile,pal);
\r
737 static void DrawAllSpritesInterlace(int pri, int sh)
\r
739 struct PicoVideo *pvid=&Pico.video;
\r
740 int i,u,table,link=0,sline=DrawScanline<<1;
\r
741 unsigned int *sprites[80]; // Sprite index
\r
743 table=pvid->reg[5]&0x7f;
\r
744 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
745 table<<=8; // Get sprite table address/2
\r
747 for (i=u=0; u < 80 && i < 21; u++)
\r
749 unsigned int *sprite;
\r
750 int code, sx, sy, height;
\r
752 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
757 if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite
\r
759 // check if it is on this line
\r
760 sy = (code&0x3ff)-0x100;
\r
761 height = (((code>>24)&3)+1)<<4;
\r
762 if(sline < sy || sline >= sy+height) goto nextsprite; // no
\r
764 // check if sprite is not hidden offscreen
\r
765 sx = (sx>>16)&0x1ff;
\r
766 sx -= 0x78; // Get X coordinate + 8
\r
767 if(sx <= -8*3 || sx >= 328) goto nextsprite;
\r
769 // sprite is good, save it's pointer
\r
770 sprites[i++]=sprite;
\r
773 // Find next sprite
\r
774 link=(code>>16)&0x7f;
\r
775 if(!link) break; // End of sprites
\r
778 // Go through sprites backwards:
\r
779 for (i-- ;i>=0; i--)
\r
780 DrawSpriteInterlace(sprites[i]);
\r
784 #ifndef _ASM_DRAW_C
\r
786 * s/h drawing: lo_layers|40, lo_sprites|40 && mark_op,
\r
787 * hi_layers&=~40, hi_sprites
\r
789 * Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size
\r
790 * Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
792 static void DrawSpritesSHi(unsigned char *sprited)
\r
794 int (*fTileFunc)(int sx,int addr,int pal);
\r
798 cnt = sprited[0] & 0x7f;
\r
799 if (cnt == 0) return;
\r
803 // Go through sprites backwards:
\r
804 for (cnt--; cnt >= 0; cnt--)
\r
806 int *sprite, code, pal, tile, sx, sy;
\r
807 int offs, delta, width, height, row;
\r
809 offs = (p[cnt] & 0x7f) * 2;
\r
810 sprite = HighPreSpr + offs;
\r
812 pal = (code>>9)&0x30;
\r
816 if (code & 0x8000) // hi priority
\r
818 if (code&0x800) fTileFunc=TileFlipSH;
\r
819 else fTileFunc=TileNormSH;
\r
821 if (code&0x800) fTileFunc=TileFlipSH_onlyop_lp;
\r
822 else fTileFunc=TileNormSH_onlyop_lp;
\r
825 if (!(code & 0x8000)) continue; // non-operator low sprite, already drawn
\r
826 if (code&0x800) fTileFunc=TileFlip;
\r
827 else fTileFunc=TileNorm;
\r
830 // parse remaining sprite data
\r
834 height=(sy>>24)&7; // Width and height in tiles
\r
835 sy=(sy<<16)>>16; // Y
\r
837 row=DrawScanline-sy; // Row of the sprite we are on
\r
839 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
841 tile=code + (row>>3); // Tile number increases going down
\r
842 delta=height; // Delta to increase tile by going right
\r
843 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
845 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
846 delta<<=4; // Delta of address
\r
848 for (; width; width--,sx+=8,tile+=delta)
\r
850 if(sx<=0) continue;
\r
851 if(sx>=328) break; // Offscreen
\r
853 tile&=0x7fff; // Clip tile address
\r
854 fTileFunc(sx,tile,pal);
\r
858 #endif // !_ASM_DRAW_C
\r
860 static void DrawSpritesHiAS(unsigned char *sprited, int sh)
\r
862 int (*fTileFunc)(int sx,int addr,int pal);
\r
864 int entry, cnt, sh_cnt = 0;
\r
866 cnt = sprited[0] & 0x7f;
\r
867 if (cnt == 0) return;
\r
869 rendstatus |= PDRAW_SPR_LO_ON_HI;
\r
873 // Go through sprites:
\r
874 for (entry = 0; entry < cnt; entry++)
\r
876 int *sprite, code, pal, tile, sx, sy;
\r
877 int offs, delta, width, height, row;
\r
879 offs = (p[entry] & 0x7f) * 2;
\r
880 sprite = HighPreSpr + offs;
\r
882 pal = (code>>9)&0x30;
\r
884 if (code & 0x8000) // hi priority
\r
886 if (sh && pal == 0x30)
\r
888 if (code&0x800) fTileFunc=TileFlipAS_noop;
\r
889 else fTileFunc=TileNormAS_noop;
\r
891 if (code&0x800) fTileFunc=TileFlipAS;
\r
892 else fTileFunc=TileNormAS;
\r
895 if (code&0x800) fTileFunc=TileFlipAS_onlymark;
\r
896 else fTileFunc=TileNormAS_onlymark;
\r
898 if (sh && pal == 0x30)
\r
899 p[sh_cnt++] = offs / 2; // re-save for sh/hi pass
\r
901 // parse remaining sprite data
\r
905 height=(sy>>24)&7; // Width and height in tiles
\r
906 sy=(sy<<16)>>16; // Y
\r
908 row=DrawScanline-sy; // Row of the sprite we are on
\r
910 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
912 tile=code + (row>>3); // Tile number increases going down
\r
913 delta=height; // Delta to increase tile by going right
\r
914 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
916 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
917 delta<<=4; // Delta of address
\r
920 for (; width; width--,sx+=8,tile+=delta)
\r
922 if(sx<=0) continue;
\r
923 if(sx>=328) break; // Offscreen
\r
925 tile&=0x7fff; // Clip tile address
\r
926 fTileFunc(sx,tile,pal);
\r
930 if (!sh || !(sprited[1]&SPRL_MAY_HAVE_OP)) return;
\r
932 /* nasty 1: remove 'sprite' flags */
\r
934 int c = 320/4/4, *zb = (int *)(HighCol+8);
\r
937 *zb++ &= 0x7f7f7f7f; *zb++ &= 0x7f7f7f7f;
\r
938 *zb++ &= 0x7f7f7f7f; *zb++ &= 0x7f7f7f7f;
\r
942 /* nasty 2: sh operator pass */
\r
943 sprited[0] = sh_cnt;
\r
944 DrawSpritesSHi(sprited);
\r
948 // Index + 0 : ----hhvv -lllllll -------y yyyyyyyy
\r
949 // Index + 4 : -------x xxxxxxxx pccvhnnn nnnnnnnn
\r
951 // Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size
\r
952 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
954 void PrepareSprites(int full)
\r
956 struct PicoVideo *pvid=&Pico.video;
\r
959 int *pd = HighPreSpr;
\r
960 int max_lines = 224, max_sprites = 80, max_width = 328;
\r
961 int max_line_sprites = 20; // 20 sprites, 40 tiles
\r
963 if (!(Pico.video.reg[12]&1))
\r
964 max_sprites = 64, max_line_sprites = 16, max_width = 264;
\r
965 if (PicoOpt & POPT_DIS_SPRITE_LIM)
\r
966 max_line_sprites = MAX_LINE_SPRITES;
\r
968 if (pvid->reg[1]&8) max_lines = 240;
\r
969 sh = Pico.video.reg[0xC]&8; // shadow/hilight?
\r
971 table=pvid->reg[5]&0x7f;
\r
972 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
973 table<<=8; // Get sprite table address/2
\r
978 // updates: tilecode, sx
\r
979 for (u=0; u < max_sprites && (pack = *pd); u++, pd+=2)
\r
981 unsigned int *sprite;
\r
982 int code2, sx, sy, height;
\r
984 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
986 // parse sprite info
\r
988 sx = (code2>>16)&0x1ff;
\r
989 sx -= 0x78; // Get X coordinate + 8
\r
990 sy = (pack << 16) >> 16;
\r
991 height = (pack >> 24) & 0xf;
\r
993 if (sy < max_lines && sy + (height<<3) > DrawScanline && // sprite onscreen (y)?
\r
994 (sx > -24 || sx < max_width)) // onscreen x
\r
996 int y = (sy >= DrawScanline) ? sy : DrawScanline;
\r
997 int entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80);
\r
998 for (; y < sy + (height<<3) && y < max_lines; y++)
\r
1001 cnt = HighLnSpr[y][0] & 0x7f;
\r
1002 if (cnt >= max_line_sprites) continue; // sprite limit?
\r
1004 for (i = 0; i < cnt; i++)
\r
1005 if (((HighLnSpr[y][3+i] ^ entry) & 0x7f) == 0) goto found;
\r
1007 // this sprite was previously missing
\r
1008 HighLnSpr[y][3+cnt] = entry;
\r
1009 HighLnSpr[y][0] = cnt + 1;
\r
1012 HighLnSpr[y][1] |= SPRL_HAVE_HI;
\r
1013 else HighLnSpr[y][1] |= SPRL_HAVE_LO;
\r
1017 code2 &= ~0xfe000000;
\r
1018 code2 -= 0x00780000; // Get X coordinate + 8 in upper 16 bits
\r
1021 // Find next sprite
\r
1022 link=(sprite[0]>>16)&0x7f;
\r
1023 if (!link) break; // End of sprites
\r
1028 for (u = 0; u < max_lines; u++)
\r
1029 *((int *)&HighLnSpr[u][0]) = 0;
\r
1031 for (u = 0; u < max_sprites; u++)
\r
1033 unsigned int *sprite;
\r
1034 int code, code2, sx, sy, hv, height, width;
\r
1036 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
1038 // parse sprite info
\r
1040 sy = (code&0x1ff)-0x80;
\r
1041 hv = (code>>24)&0xf;
\r
1042 height = (hv&3)+1;
\r
1044 width = (hv>>2)+1;
\r
1045 code2 = sprite[1];
\r
1046 sx = (code2>>16)&0x1ff;
\r
1047 sx -= 0x78; // Get X coordinate + 8
\r
1049 if (sy < max_lines && sy + (height<<3) > DrawScanline) // sprite onscreen (y)?
\r
1051 int entry, y, sx_min, onscr_x, maybe_op = 0;
\r
1053 sx_min = 8-(width<<3);
\r
1054 onscr_x = sx_min < sx && sx < max_width;
\r
1055 if (sh && (code2 & 0x6000) == 0x6000)
\r
1056 maybe_op = SPRL_MAY_HAVE_OP;
\r
1058 entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80);
\r
1059 y = (sy >= DrawScanline) ? sy : DrawScanline;
\r
1060 for (; y < sy + (height<<3) && y < max_lines; y++)
\r
1062 unsigned char *p = &HighLnSpr[y][0];
\r
1064 if (cnt >= max_line_sprites) continue; // sprite limit?
\r
1066 if (p[2] >= max_line_sprites*2) { // tile limit?
\r
1072 if (sx == -0x78) {
\r
1074 p[0] |= 0x80; // masked, no more sprites for this line
\r
1077 // must keep the first sprite even if it's offscreen, for masking
\r
1078 if (cnt > 0 && !onscr_x) continue; // offscreen x
\r
1082 p[1] |= (entry & 0x80) ? SPRL_HAVE_HI : SPRL_HAVE_LO;
\r
1083 p[1] |= maybe_op; // there might be op sprites on this line
\r
1084 if (cnt > 0 && (code2 & 0x8000) && !(p[3+cnt-1]&0x80))
\r
1085 p[1] |= SPRL_LO_ABOVE_HI;
\r
1089 *pd++ = (width<<28)|(height<<24)|(hv<<16)|((unsigned short)sy);
\r
1090 *pd++ = (sx<<16)|((unsigned short)code2);
\r
1092 // Find next sprite
\r
1093 link=(code>>16)&0x7f;
\r
1094 if (!link) break; // End of sprites
\r
1099 for (u = 0; u < max_lines; u++)
\r
1102 printf("c%03i: %2i, %2i: ", u, HighLnSpr[u][0] & 0x7f, HighLnSpr[u][2]);
\r
1103 for (y = 0; y < HighLnSpr[u][0] & 0x7f; y++)
\r
1104 printf(" %i", HighLnSpr[u][y+3]);
\r
1111 #ifndef _ASM_DRAW_C
\r
1112 static void DrawAllSprites(unsigned char *sprited, int prio, int sh)
\r
1114 int rs = rendstatus;
\r
1118 if (rs & (PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES)) {
\r
1119 //elprintf(EL_STATUS, "PrepareSprites(%i)", (rs>>4)&1);
\r
1120 PrepareSprites(rs & PDRAW_DIRTY_SPRITES);
\r
1121 rendstatus = rs & ~(PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES);
\r
1124 cnt = sprited[0] & 0x7f;
\r
1125 if (cnt == 0) return;
\r
1129 // Go through sprites backwards:
\r
1130 for (cnt--; cnt >= 0; cnt--)
\r
1133 if ((p[cnt] >> 7) != prio) continue;
\r
1134 offs = (p[cnt]&0x7f) * 2;
\r
1135 DrawSprite(HighPreSpr + offs, sh);
\r
1140 // --------------------------------------------
\r
1142 void BackFill(int reg7, int sh)
\r
1144 unsigned int back;
\r
1146 // Start with a blank scanline (background colour):
\r
1152 memset32((int *)(HighCol+8), back, 320/4);
\r
1156 // --------------------------------------------
\r
1158 unsigned short HighPal[0x100];
\r
1160 #ifndef _ASM_DRAW_C
\r
1161 void PicoDoHighPal555(int sh)
\r
1163 unsigned int *spal, *dpal;
\r
1164 unsigned short *pal=HighPal;
\r
1167 Pico.m.dirtyPal = 0;
\r
1169 spal = (void *)Pico.cram;
\r
1170 dpal = (void *)HighPal;
\r
1172 for (i = 0; i < 0x40; i++) {
\r
1173 unsigned int t = spal[i];
\r
1175 t = ((t & 0x000e000e)<< 1) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)<<4);
\r
1177 t = ((t & 0x000e000e)<<12) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)>>7);
\r
1179 t |= (t >> 3) & 0x18e318e3;
\r
1185 // shadowed pixels
\r
1186 for (i = 0x3f; i >= 0; i--)
\r
1187 pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x738e);
\r
1188 // hilighted pixels
\r
1189 for (i = 0x3f; i >= 0; i--) {
\r
1190 t=pal[i]&0xe71c;t+=0x4208;if(t&0x20)t|=0x1c;if(t&0x800)t|=0x700;if(t&0x10000)t|=0xe000;t&=0xe71c;
\r
1191 pal[0x80|i]=(unsigned short)t;
\r
1196 static void FinalizeLineBGR444(int sh, int line)
\r
1198 unsigned short *pd=DrawLineDest;
\r
1199 unsigned char *ps=HighCol+8;
\r
1200 unsigned short *pal=Pico.cram;
\r
1201 int len, i, t, mask=0xff;
\r
1203 if (Pico.video.reg[12]&1) {
\r
1206 if(!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1212 if(Pico.m.dirtyPal) {
\r
1213 blockcpy(pal, Pico.cram, 0x40*2);
\r
1214 // shadowed pixels
\r
1215 for(i = 0x3f; i >= 0; i--)
\r
1216 pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x0777);
\r
1217 // hilighted pixels
\r
1218 for(i = 0x3f; i >= 0; i--) {
\r
1219 t=pal[i]&0xeee;t+=0x444;if(t&0x10)t|=0xe;if(t&0x100)t|=0xe0;if(t&0x1000)t|=0xe00;t&=0xeee;
\r
1220 pal[0x80|i]=(unsigned short)t;
\r
1222 Pico.m.dirtyPal = 0;
\r
1226 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))
\r
1227 mask=0x3f; // accurate sprites
\r
1229 for(i = 0; i < len; i++)
\r
1230 pd[i] = pal[ps[i] & mask];
\r
1234 void FinalizeLineRGB555(int sh, int line)
\r
1236 unsigned short *pd=DrawLineDest;
\r
1237 unsigned char *ps=HighCol+8;
\r
1238 unsigned short *pal=HighPal;
\r
1241 if (Pico.m.dirtyPal)
\r
1242 PicoDoHighPal555(sh);
\r
1244 if (Pico.video.reg[12]&1) {
\r
1247 if (!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1254 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))
\r
1255 mask=0x3f; // accurate sprites, upper bits are priority stuff
\r
1257 for (i = 0; i < len; i++)
\r
1258 pd[i] = pal[ps[i] & mask];
\r
1260 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1261 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1262 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))
\r
1263 amips_clut_6bit(pd, ps, pal, len);
\r
1264 else amips_clut(pd, ps, pal, len);
\r
1270 static void FinalizeLine8bit(int sh, int line)
\r
1272 unsigned char *pd = DrawLineDest;
\r
1273 int len, rs = rendstatus;
\r
1274 static int dirty_count;
\r
1276 if (!sh && Pico.m.dirtyPal == 1)
\r
1278 // a hack for mid-frame palette changes
\r
1279 if (!(rs & PDRAW_SONIC_MODE))
\r
1281 else dirty_count++;
\r
1282 rs |= PDRAW_SONIC_MODE;
\r
1284 if (dirty_count == 3) {
\r
1285 blockcpy(HighPal, Pico.cram, 0x40*2);
\r
1286 } else if (dirty_count == 11) {
\r
1287 blockcpy(HighPal+0x40, Pico.cram, 0x40*2);
\r
1291 if (Pico.video.reg[12]&1) {
\r
1294 if (!(PicoOpt & POPT_DIS_32C_BORDER))
\r
1299 if (!sh && (rs & PDRAW_SONIC_MODE)) {
\r
1300 if (dirty_count >= 11) {
\r
1301 blockcpy_or(pd, HighCol+8, len, 0x80);
\r
1303 blockcpy_or(pd, HighCol+8, len, 0x40);
\r
1306 blockcpy(pd, HighCol+8, len);
\r
1310 static void (*FinalizeLine)(int sh, int line);
\r
1312 // --------------------------------------------
\r
1314 static int DrawDisplay(int sh)
\r
1316 unsigned char *sprited = &HighLnSpr[DrawScanline][0];
\r
1317 struct PicoVideo *pvid=&Pico.video;
\r
1318 int win=0,edge=0,hvwind=0;
\r
1319 int maxw,maxcells;
\r
1321 rendstatus &= ~(PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO);
\r
1323 if (pvid->reg[12]&1) {
\r
1324 maxw = 328; maxcells = 40;
\r
1326 maxw = 264; maxcells = 32;
\r
1329 // Find out if the window is on this line:
\r
1330 win=pvid->reg[0x12];
\r
1331 edge=(win&0x1f)<<3;
\r
1333 if (win&0x80) { if (DrawScanline>=edge) hvwind=1; }
\r
1334 else { if (DrawScanline< edge) hvwind=1; }
\r
1336 if (!hvwind) // we might have a vertical window here
\r
1338 win=pvid->reg[0x11];
\r
1341 if (!edge) hvwind=1;
\r
1342 else if(edge < (maxcells>>1)) hvwind=2;
\r
1345 else if(edge < (maxcells>>1)) hvwind=2;
\r
1350 /* - layer B low - */
\r
1351 if (PicoDrawMask & PDRAW_LAYERB_ON)
\r
1352 DrawLayer(1|(sh<<1), HighCacheB, 0, maxcells);
\r
1353 /* - layer A low - */
\r
1354 if (!(PicoDrawMask & PDRAW_LAYERA_ON));
\r
1355 else if (hvwind == 1)
\r
1356 DrawWindow(0, maxcells>>1, 0, sh);
\r
1357 else if (hvwind == 2) {
\r
1358 DrawLayer(0|(sh<<1), HighCacheA, (win&0x80) ? 0 : edge<<1, (win&0x80) ? edge<<1 : maxcells);
\r
1359 DrawWindow( (win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh);
\r
1361 DrawLayer(0|(sh<<1), HighCacheA, 0, maxcells);
\r
1362 /* - sprites low - */
\r
1363 if (!(PicoDrawMask & PDRAW_SPRITES_LOW_ON));
\r
1364 else if (rendstatus & PDRAW_INTERLACE)
\r
1365 DrawAllSpritesInterlace(0, sh);
\r
1366 else if (sprited[1] & SPRL_HAVE_LO)
\r
1367 DrawAllSprites(sprited, 0, sh);
\r
1369 /* - layer B hi - */
\r
1370 if ((PicoDrawMask & PDRAW_LAYERB_ON) && HighCacheB[0])
\r
1371 DrawTilesFromCache(HighCacheB, sh, maxw);
\r
1372 /* - layer A hi - */
\r
1373 if (!(PicoDrawMask & PDRAW_LAYERA_ON));
\r
1374 else if (hvwind == 1)
\r
1375 DrawWindow(0, maxcells>>1, 1, sh);
\r
1376 else if (hvwind == 2) {
\r
1377 if (HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, (win&0x80) ? edge<<4 : maxw);
\r
1378 DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh);
\r
1380 if (HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, maxw);
\r
1381 /* - sprites hi - */
\r
1382 if (!(PicoDrawMask & PDRAW_SPRITES_HI_ON));
\r
1383 else if (rendstatus & PDRAW_INTERLACE)
\r
1384 DrawAllSpritesInterlace(1, sh);
\r
1385 // have sprites without layer pri bit ontop of sprites with that bit
\r
1386 else if ((sprited[1] & 0xd0) == 0xd0 && (PicoOpt & POPT_ACC_SPRITES))
\r
1387 DrawSpritesHiAS(sprited, sh);
\r
1388 else if (sh && (sprited[1] & SPRL_MAY_HAVE_OP))
\r
1389 DrawSpritesSHi(sprited);
\r
1390 else if (sprited[1] & SPRL_HAVE_HI)
\r
1391 DrawAllSprites(sprited, 1, 0);
\r
1396 for (a = 0, c = HighCacheA; *c; c++, a++);
\r
1397 for (b = 0, c = HighCacheB; *c; c++, b++);
\r
1398 printf("%i:%03i: a=%i, b=%i\n", Pico.m.frame_count, DrawScanline, a, b);
\r
1405 // MUST be called every frame
\r
1406 PICO_INTERNAL void PicoFrameStart(void)
\r
1410 // prepare to do this frame
\r
1412 if ((Pico.video.reg[12] & 6) == 6)
\r
1413 rendstatus |= PDRAW_INTERLACE; // interlace mode
\r
1414 if (!(Pico.video.reg[12] & 1))
\r
1415 rendstatus |= PDRAW_32_COLS;
\r
1416 if (Pico.video.reg[1] & 8)
\r
1420 skip_next_line = 0;
\r
1422 if (rendstatus != rendstatus_old || lines != rendlines) {
\r
1423 rendlines = lines;
\r
1424 // mode_change() might reset rendstatus_old by calling SetColorFormat
\r
1425 emu_video_mode_change((lines == 240) ? 0 : 8,
\r
1426 lines, (Pico.video.reg[12] & 1) ? 0 : 1);
\r
1427 rendstatus_old = rendstatus;
\r
1430 if (PicoOpt & POPT_ALT_RENDERER)
\r
1433 if (Pico.m.dirtyPal)
\r
1434 Pico.m.dirtyPal = 2; // reset dirty if needed
\r
1435 PrepareSprites(1);
\r
1438 static void DrawBlankedLine(int line, int offs, int sh, int bgc)
\r
1440 if (PicoScanBegin != NULL)
\r
1441 PicoScanBegin(line + offs);
\r
1443 BackFill(bgc, sh);
\r
1445 if (FinalizeLine != NULL)
\r
1446 FinalizeLine(sh, line);
\r
1448 if (PicoScanEnd != NULL)
\r
1449 PicoScanEnd(line + offs);
\r
1452 static void PicoLine(int line, int offs, int sh, int bgc)
\r
1456 if (skip_next_line > 0) {
\r
1461 DrawScanline = line;
\r
1462 if (PicoScanBegin != NULL)
\r
1463 skip = PicoScanBegin(line + offs);
\r
1466 skip_next_line = skip - 1;
\r
1471 BackFill(bgc, sh);
\r
1472 if (Pico.video.reg[1]&0x40)
\r
1475 if (FinalizeLine != NULL)
\r
1476 FinalizeLine(sh, line);
\r
1478 if (PicoScanEnd != NULL)
\r
1479 skip_next_line = PicoScanEnd(line + offs);
\r
1482 void PicoDrawSync(int to, int blank_last_line)
\r
1484 int line, offs = 0;
\r
1485 int sh = (Pico.video.reg[0xC] & 8) >> 3; // shadow/hilight?
\r
1486 int bgc = Pico.video.reg[7];
\r
1488 pprof_start(draw);
\r
1490 if (rendlines != 240)
\r
1493 // need to know which pixels are bg for 32x
\r
1494 if (PicoAHW & PAHW_32X)
\r
1497 for (line = DrawScanline; line < to; line++)
\r
1499 #if !CAN_HANDLE_240_LINES
\r
1500 if (line >= 224) break;
\r
1502 PicoLine(line, offs, sh, bgc);
\r
1505 #if !CAN_HANDLE_240_LINES
\r
1506 if (line >= 224) {
\r
1507 DrawScanline = 240;
\r
1515 if (blank_last_line)
\r
1516 DrawBlankedLine(line, offs, sh, bgc);
\r
1517 else PicoLine(line, offs, sh, bgc);
\r
1520 DrawScanline = line;
\r
1525 void PicoDrawSetColorFormat(int which)
\r
1529 case 2: FinalizeLine = FinalizeLine8bit; break;
\r
1530 case 1: FinalizeLine = (PicoAHW & PAHW_32X) ? FinalizeLine32xRGB555 : FinalizeLineRGB555; break;
\r
1531 case 0: FinalizeLine = FinalizeLineBGR444; break;
\r
1532 default:FinalizeLine = NULL; break;
\r
1534 PicoDrawSetColorFormatMode4(which);
\r
1535 rendstatus_old = -1;
\r
1536 #if OVERRIDE_HIGHCOL
\r
1538 HighCol=DefHighCol;
\r