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
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14 * - accurate sprites (AS)
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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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21 #include "PicoInt.h"
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23 int (*PicoScanBegin)(unsigned int num) = NULL;
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24 int (*PicoScanEnd) (unsigned int num) = NULL;
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26 #if OVERRIDE_HIGHCOL
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27 static unsigned char DefHighCol[8+320+8];
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28 unsigned char *HighCol=DefHighCol;
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30 unsigned char HighCol[8+320+8];
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32 unsigned short DefOutBuff[320*2];
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33 void *DrawLineDest=DefOutBuff; // pointer to dest buffer where to draw this line to
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35 static int HighCacheA[41+1]; // caches for high layers
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36 static int HighCacheB[41+1];
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37 int HighPreSpr[80*2+1]; // slightly preprocessed sprites
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39 #define MAX_LINE_SPRITES 30
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40 unsigned char HighLnSpr[240][2 + MAX_LINE_SPRITES]; // sprite_count, tile_count, [spritep]...
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43 int DrawScanline = 0;
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45 static int skip_next_line=0;
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47 //unsigned short ppt[] = { 0x0f11, 0x0ff1, 0x01f1, 0x011f, 0x01ff, 0x0f1f, 0x0f0e, 0x0e7c };
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49 static void (*DrawAllSpritesLoPri)(int prio, int sh) = NULL;
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50 static void (*DrawAllSpritesHiPri)(int prio, int sh) = NULL;
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54 int nametab; // Position in VRAM of name table (for this tile line)
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55 int line; // Line number in pixels 0x000-0x3ff within the virtual tilemap
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56 int hscroll; // Horizontal scroll value in pixels for the line
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57 int xmask; // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap
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58 int *hc; // cache for high tile codes and their positions
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59 int cells; // cells (tiles) to draw (32 col mode doesn't need to update whole 320)
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62 // stuff available in asm:
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64 void DrawWindow(int tstart, int tend, int prio, int sh);
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65 void BackFill(int reg7, int sh);
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66 void DrawAllSprites(int prio, int sh);
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67 void DrawTilesFromCache(int *hc, int sh, int rlim);
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68 void DrawSpritesSHi(int prio, int sh);
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69 void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells);
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70 void FinalizeLineBGR444(int sh);
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71 void FinalizeLineRGB555(int sh);
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72 void *blockcpy(void *dst, const void *src, size_t n);
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73 void blockcpy_or(void *dst, void *src, size_t n, int pat);
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76 void blockcpy_or(void *dst, void *src, size_t n, int pat)
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78 unsigned char *pd = dst, *ps = src;
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80 *pd++ = (unsigned char) (*ps++ | pat);
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82 #define blockcpy memcpy
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86 #define TileNormMaker(funcname,pix_func) \
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87 static int funcname(int sx,int addr,int pal) \
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89 unsigned char *pd = HighCol+sx; \
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90 unsigned int pack=0; unsigned int t=0; \
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92 pack=*(unsigned int *)(Pico.vram+addr); /* Get 8 pixels */ \
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95 t=(pack&0x0000f000)>>12; pix_func(0); \
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96 t=(pack&0x00000f00)>> 8; pix_func(1); \
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97 t=(pack&0x000000f0)>> 4; pix_func(2); \
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98 t=(pack&0x0000000f) ; pix_func(3); \
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99 t=(pack&0xf0000000)>>28; pix_func(4); \
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100 t=(pack&0x0f000000)>>24; pix_func(5); \
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101 t=(pack&0x00f00000)>>20; pix_func(6); \
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102 t=(pack&0x000f0000)>>16; pix_func(7); \
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106 return 1; /* Tile blank */ \
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110 #define TileFlipMaker(funcname,pix_func) \
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111 static int funcname(int sx,int addr,int pal) \
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113 unsigned char *pd = HighCol+sx; \
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114 unsigned int pack=0; unsigned int t=0; \
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116 pack=*(unsigned int *)(Pico.vram+addr); /* Get 8 pixels */ \
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119 t=(pack&0x000f0000)>>16; pix_func(0); \
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120 t=(pack&0x00f00000)>>20; pix_func(1); \
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121 t=(pack&0x0f000000)>>24; pix_func(2); \
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122 t=(pack&0xf0000000)>>28; pix_func(3); \
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123 t=(pack&0x0000000f) ; pix_func(4); \
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124 t=(pack&0x000000f0)>> 4; pix_func(5); \
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125 t=(pack&0x00000f00)>> 8; pix_func(6); \
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126 t=(pack&0x0000f000)>>12; pix_func(7); \
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130 return 1; /* Tile blank */ \
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134 #ifdef _ASM_DRAW_C_AMIPS
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135 int TileNorm(int sx,int addr,int pal);
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136 int TileFlip(int sx,int addr,int pal);
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139 #define pix_just_write(x) \
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142 TileNormMaker(TileNorm,pix_just_write)
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143 TileFlipMaker(TileFlip,pix_just_write)
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147 #ifndef _ASM_DRAW_C
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149 // draw a sprite pixel, process operator colors
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150 #define pix_sh(x) \
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152 else if (t==0xe) pd[x]=(pd[x]&0x3f)|0x80; /* hilight */ \
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153 else if (t==0xf) pd[x]= pd[x] |0xc0; /* shadow */ \
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156 TileNormMaker(TileNormSH, pix_sh)
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157 TileFlipMaker(TileFlipSH, pix_sh)
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159 // draw a sprite pixel ignoring operator colors
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160 #define pix_sh_noop(x) \
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161 if (t && t < 0xe) \
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164 TileNormMaker(TileNormSH_noop, pix_sh_noop)
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165 TileFlipMaker(TileFlipSH_noop, pix_sh_noop)
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167 // process operator pixels only, apply only on low pri tiles
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168 #define pix_sh_onlyop(x) \
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169 if (t==0xe && (pd[x]&0x40)) pd[x]=(pd[x]&0x3f)|0x80; /* hilight */ \
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170 else if (t==0xf && (pd[x]&0x40)) pd[x]= pd[x] |0xc0; /* shadow */
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172 TileNormMaker(TileNormSH_onlyop_lp, pix_sh_onlyop)
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173 TileFlipMaker(TileFlipSH_onlyop_lp, pix_sh_onlyop)
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177 // draw a sprite pixel (AS)
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178 #define pix_as(x) \
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179 if (t && !(pd[x]&0x80)) pd[x]=pal|t
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181 TileNormMaker(TileNormAS, pix_as)
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182 TileFlipMaker(TileFlipAS, pix_as)
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184 // draw a sprite pixel, skip operator colors (AS)
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185 #define pix_sh_as_noop(x) \
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186 if (t && t < 0xe && !(pd[x]&0x80)) pd[x]=pal|t
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188 TileNormMaker(TileNormAS_noop, pix_sh_as_noop)
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189 TileFlipMaker(TileFlipAS_noop, pix_sh_as_noop)
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191 // mark pixel as sprite pixel (AS)
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192 #define pix_sh_as_onlymark(x) \
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195 TileNormMaker(TileNormAS_onlymark, pix_sh_as_onlymark)
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196 TileFlipMaker(TileFlipAS_onlymark, pix_sh_as_onlymark)
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199 // --------------------------------------------
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201 #ifndef _ASM_DRAW_C
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202 static void DrawStrip(struct TileStrip *ts, int plane_sh, int cellskip)
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204 int tilex,dx,ty,code=0,addr=0,cells;
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205 int oldcode=-1,blank=-1; // The tile we know is blank
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208 // Draw tiles across screen:
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209 sh=(plane_sh<<5)&0x40;
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210 tilex=((-ts->hscroll)>>3)+cellskip;
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211 ty=(ts->line&7)<<1; // Y-Offset into tile
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212 dx=((ts->hscroll-1)&7)+1;
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213 cells = ts->cells - cellskip;
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214 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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217 for (; cells > 0; dx+=8,tilex++,cells--)
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221 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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222 if (code==blank) continue;
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223 if (code>>15) { // high priority tile
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224 int cval = code | (dx<<16) | (ty<<25);
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225 if(code&0x1000) cval^=7<<26;
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226 *ts->hc++ = cval; // cache it
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230 if (code!=oldcode) {
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232 // Get tile address/2:
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233 addr=(code&0x7ff)<<4;
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235 if (code&0x1000) addr^=0xe; // Y-flip
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237 pal=((code>>9)&0x30)|sh;
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240 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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241 else zero=TileNorm(dx,addr,pal);
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243 if (zero) blank=code; // We know this tile is blank now
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246 // terminate the cache list
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248 // if oldcode wasn't changed, it means all layer is hi priority
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249 if (oldcode == -1) rendstatus |= PDRAW_PLANE_HI_PRIO;
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253 void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
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255 int tilex,dx,code=0,addr=0,cell=0;
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256 int oldcode=-1,blank=-1; // The tile we know is blank
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257 int pal=0,scan=DrawScanline;
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259 // Draw tiles across screen:
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260 tilex=(-ts->hscroll)>>3;
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261 dx=((ts->hscroll-1)&7)+1;
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262 if(dx != 8) cell--; // have hscroll, start with negative cell
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267 for (; cell < ts->cells; dx+=8,tilex++,cell++)
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269 int zero=0,nametabadd,ty;
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274 vscroll=Pico.vsram[(plane_sh&1)+(cell&~1)];
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276 // Find the line in the name table
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277 line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..
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278 nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width]
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279 ty=(line&7)<<1; // Y-Offset into tile
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282 code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];
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283 if (code==blank) continue;
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284 if (code>>15) { // high priority tile
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285 int cval = code | (dx<<16) | (ty<<25);
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286 if(code&0x1000) cval^=7<<26;
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287 *ts->hc++ = cval; // cache it
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291 if (code!=oldcode) {
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293 // Get tile address/2:
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294 addr=(code&0x7ff)<<4;
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295 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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297 pal=((code>>9)&0x30)|((plane_sh<<5)&0x40);
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300 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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301 else zero=TileNorm(dx,addr,pal);
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303 if (zero) blank=code; // We know this tile is blank now
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306 // terminate the cache list
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308 if (oldcode == -1) rendstatus |= PDRAW_PLANE_HI_PRIO;
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312 #ifndef _ASM_DRAW_C
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315 void DrawStripInterlace(struct TileStrip *ts)
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317 int tilex=0,dx=0,ty=0,code=0,addr=0,cells;
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318 int oldcode=-1,blank=-1; // The tile we know is blank
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321 // Draw tiles across screen:
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322 tilex=(-ts->hscroll)>>3;
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323 ty=(ts->line&15)<<1; // Y-Offset into tile
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324 dx=((ts->hscroll-1)&7)+1;
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326 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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328 for (; cells; dx+=8,tilex++,cells--)
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332 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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333 if (code==blank) continue;
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334 if (code>>15) { // high priority tile
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335 int cval = (code&0xfc00) | (dx<<16) | (ty<<25);
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336 cval|=(code&0x3ff)<<1;
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337 if(code&0x1000) cval^=0xf<<26;
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338 *ts->hc++ = cval; // cache it
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342 if (code!=oldcode) {
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344 // Get tile address/2:
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345 addr=(code&0x7ff)<<5;
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346 if (code&0x1000) addr+=30-ty; else addr+=ty; // Y-flip
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348 // pal=Pico.cram+((code>>9)&0x30);
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349 pal=((code>>9)&0x30);
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352 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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353 else zero=TileNorm(dx,addr,pal);
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355 if (zero) blank=code; // We know this tile is blank now
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358 // terminate the cache list
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362 // --------------------------------------------
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364 #ifndef _ASM_DRAW_C
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365 static void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells)
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367 struct PicoVideo *pvid=&Pico.video;
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368 const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid)
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369 struct TileStrip ts;
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370 int width, height, ymask;
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376 // Work out the TileStrip to draw
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378 // Work out the name table size: 32 64 or 128 tiles (0-3)
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379 width=pvid->reg[16];
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380 height=(width>>4)&3; width&=3;
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382 ts.xmask=(1<<shift[width])-1; // X Mask in tiles (0x1f-0x7f)
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383 ymask=(height<<8)|0xff; // Y Mask in pixels
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384 if(width == 1) ymask&=0x1ff;
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385 else if(width>1) ymask =0x0ff;
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387 // Find name table:
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388 if (plane_sh&1) ts.nametab=(pvid->reg[4]&0x07)<<12; // B
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389 else ts.nametab=(pvid->reg[2]&0x38)<< 9; // A
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391 htab=pvid->reg[13]<<9; // Horizontal scroll table address
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392 if ( pvid->reg[11]&2) htab+=DrawScanline<<1; // Offset by line
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393 if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile
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394 htab+=plane_sh&1; // A or B
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396 // Get horizontal scroll value, will be masked later
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397 ts.hscroll=Pico.vram[htab&0x7fff];
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399 if((pvid->reg[12]&6) == 6) {
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400 // interlace mode 2
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401 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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403 // Find the line in the name table
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404 ts.line=(vscroll+(DrawScanline<<1))&((ymask<<1)|1);
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405 ts.nametab+=(ts.line>>4)<<shift[width];
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407 DrawStripInterlace(&ts);
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408 } else if( pvid->reg[11]&4) {
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409 // shit, we have 2-cell column based vscroll
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410 // luckily this doesn't happen too often
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411 ts.line=ymask|(shift[width]<<24); // save some stuff instead of line
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412 DrawStripVSRam(&ts, plane_sh, cellskip);
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414 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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416 // Find the line in the name table
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417 ts.line=(vscroll+DrawScanline)&ymask;
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418 ts.nametab+=(ts.line>>3)<<shift[width];
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420 DrawStrip(&ts, plane_sh, cellskip);
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425 // --------------------------------------------
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427 // tstart & tend are tile pair numbers
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428 static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
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430 struct PicoVideo *pvid=&Pico.video;
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431 int tilex,ty,nametab,code=0;
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432 int blank=-1; // The tile we know is blank
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434 // Find name table line:
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435 if (pvid->reg[12]&1)
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437 nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode
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438 nametab+=(DrawScanline>>3)<<6;
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442 nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode
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443 nametab+=(DrawScanline>>3)<<5;
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448 if (!(rendstatus & PDRAW_WND_DIFF_PRIO)) {
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449 // check the first tile code
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450 code=Pico.vram[nametab+tilex];
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451 // if the whole window uses same priority (what is often the case), we may be able to skip this field
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452 if ((code>>15) != prio) return;
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456 ty=(DrawScanline&7)<<1; // Y-Offset into tile
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458 // Draw tiles across screen:
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461 for (; tilex < tend; tilex++)
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466 code=Pico.vram[nametab+tilex];
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467 if (code==blank) continue;
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468 if ((code>>15) != prio) {
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469 rendstatus |= PDRAW_WND_DIFF_PRIO;
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473 pal=((code>>9)&0x30);
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475 // Get tile address/2:
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476 addr=(code&0x7ff)<<4;
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477 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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479 if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
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480 else zero=TileNorm(8+(tilex<<3),addr,pal);
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482 if (zero) blank=code; // We know this tile is blank now
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487 for (; tilex < tend; tilex++)
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492 code=Pico.vram[nametab+tilex];
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493 if(code==blank) continue;
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494 if((code>>15) != prio) {
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495 rendstatus |= PDRAW_WND_DIFF_PRIO;
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499 pal=((code>>9)&0x30);
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502 int *zb = (int *)(HighCol+8+(tilex<<3));
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503 *zb++ &= 0x3f3f3f3f;
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509 // Get tile address/2:
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510 addr=(code&0x7ff)<<4;
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511 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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513 if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
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514 else zero=TileNorm(8+(tilex<<3),addr,pal);
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516 if (zero) blank=code; // We know this tile is blank now
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521 // --------------------------------------------
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523 static void DrawTilesFromCacheShPrep(void)
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525 // as some layer has covered whole line with hi priority tiles,
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526 // we can process whole line and then act as if sh/hi mode was off.
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527 int c = 320/4, *zb = (int *)(HighCol+8);
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528 rendstatus |= PDRAW_SHHI_DONE;
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531 *zb++ &= 0x3f3f3f3f;
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535 static void DrawTilesFromCache(int *hc, int sh, int rlim)
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537 int code, addr, dx;
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540 // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it
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542 if (sh && (rendstatus & (PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO)))
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544 if (!(rendstatus & PDRAW_SHHI_DONE))
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545 DrawTilesFromCacheShPrep();
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551 short blank=-1; // The tile we know is blank
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552 while ((code=*hc++)) {
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554 if((short)code == blank) continue;
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555 // Get tile address/2:
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556 addr=(code&0x7ff)<<4;
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557 addr+=(unsigned int)code>>25; // y offset into tile
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558 dx=(code>>16)&0x1ff;
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560 pal=((code>>9)&0x30);
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561 if (rlim-dx < 0) goto last_cut_tile;
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563 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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564 else zero=TileNorm(dx,addr,pal);
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566 if (zero) blank=(short)code;
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571 while ((code=*hc++)) {
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573 // Get tile address/2:
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574 addr=(code&0x7ff)<<4;
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575 addr+=(unsigned int)code>>25; // y offset into tile
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576 dx=(code>>16)&0x1ff;
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578 *zb++ &= 0x3f; *zb++ &= 0x3f; *zb++ &= 0x3f; *zb++ &= 0x3f;
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579 *zb++ &= 0x3f; *zb++ &= 0x3f; *zb++ &= 0x3f; *zb++ &= 0x3f;
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581 pal=((code>>9)&0x30);
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582 if (rlim-dx < 0) goto last_cut_tile;
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584 if (code&0x0800) TileFlip(dx,addr,pal);
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585 else TileNorm(dx,addr,pal);
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592 unsigned int t, pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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593 unsigned char *pd = HighCol+dx;
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599 case 7: t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8)); // "break" is left out intentionally
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600 case 6: t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));
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601 case 5: t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t ));
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602 case 4: t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));
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603 case 3: t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));
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604 case 2: t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));
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605 case 1: t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));
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613 case 7: t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));
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614 case 6: t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));
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615 case 5: t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));
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616 case 4: t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t ));
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617 case 3: t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));
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618 case 2: t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));
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619 case 1: t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));
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626 // --------------------------------------------
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628 // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size
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629 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
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631 static void DrawSprite(int *sprite, int sh)
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633 int width=0,height=0;
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636 int tile=0,delta=0;
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638 int (*fTileFunc)(int sx,int addr,int pal);
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640 // parse the sprite data
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645 height=(sy>>24)&7; // Width and height in tiles
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646 sy=(sy<<16)>>16; // Y
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648 row=DrawScanline-sy; // Row of the sprite we are on
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650 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
652 tile=code + (row>>3); // Tile number increases going down
\r
653 delta=height; // Delta to increase tile by going right
\r
654 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
656 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
657 delta<<=4; // Delta of address
\r
659 pal=(code>>9)&0x30;
\r
662 if (sh && (code&0x6000) == 0x6000) {
\r
663 if(code&0x0800) fTileFunc=TileFlipSH_noop;
\r
664 else fTileFunc=TileNormSH_noop;
\r
666 if(code&0x0800) fTileFunc=TileFlip;
\r
667 else fTileFunc=TileNorm;
\r
670 for (; width; width--,sx+=8,tile+=delta)
\r
672 if(sx<=0) continue;
\r
673 if(sx>=328) break; // Offscreen
\r
675 tile&=0x7fff; // Clip tile address
\r
676 fTileFunc(sx,tile,pal);
\r
681 static void DrawSpriteInterlace(unsigned int *sprite)
\r
683 int width=0,height=0;
\r
686 int tile=0,delta=0;
\r
689 // parse the sprite data
\r
692 sy=(sy&0x3ff)-0x100; // Y
\r
693 width=(height>>2)&3; height&=3;
\r
694 width++; height++; // Width and height in tiles
\r
696 row=(DrawScanline<<1)-sy; // Row of the sprite we are on
\r
699 sx=((code>>16)&0x1ff)-0x78; // X
\r
701 if (code&0x1000) row^=(16<<height)-1; // Flip Y
\r
703 tile=code&0x3ff; // Tile number
\r
704 tile+=row>>4; // Tile number increases going down
\r
705 delta=height; // Delta to increase tile by going right
\r
706 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
708 tile<<=5; tile+=(row&15)<<1; // Tile address
\r
710 delta<<=5; // Delta of address
\r
711 pal=((code>>9)&0x30); // Get palette pointer
\r
713 for (; width; width--,sx+=8,tile+=delta)
\r
715 if(sx<=0) continue;
\r
716 if(sx>=328) break; // Offscreen
\r
718 tile&=0x7fff; // Clip tile address
\r
719 if (code&0x0800) TileFlip(sx,tile,pal);
\r
720 else TileNorm(sx,tile,pal);
\r
725 static void DrawAllSpritesInterlace(int pri, int sh)
\r
727 struct PicoVideo *pvid=&Pico.video;
\r
728 int i,u,table,link=0,sline=DrawScanline<<1;
\r
729 unsigned int *sprites[80]; // Sprite index
\r
731 table=pvid->reg[5]&0x7f;
\r
732 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
733 table<<=8; // Get sprite table address/2
\r
735 for (i=u=0; u < 80 && i < 21; u++)
\r
737 unsigned int *sprite;
\r
738 int code, sx, sy, height;
\r
740 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
745 if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite
\r
747 // check if it is on this line
\r
748 sy = (code&0x3ff)-0x100;
\r
749 height = (((code>>24)&3)+1)<<4;
\r
750 if(sline < sy || sline >= sy+height) goto nextsprite; // no
\r
752 // check if sprite is not hidden offscreen
\r
753 sx = (sx>>16)&0x1ff;
\r
754 sx -= 0x78; // Get X coordinate + 8
\r
755 if(sx <= -8*3 || sx >= 328) goto nextsprite;
\r
757 // sprite is good, save it's pointer
\r
758 sprites[i++]=sprite;
\r
761 // Find next sprite
\r
762 link=(code>>16)&0x7f;
\r
763 if(!link) break; // End of sprites
\r
766 // Go through sprites backwards:
\r
767 for (i-- ;i>=0; i--)
\r
768 DrawSpriteInterlace(sprites[i]);
\r
772 #ifndef _ASM_DRAW_C
\r
773 // Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size
\r
774 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
775 static void DrawSpritesSHi(int prio, int sh)
\r
777 int (*fTileFunc)(int sx,int addr,int pal);
\r
781 cnt = HighLnSpr[DrawScanline][0] & 0x7f;
\r
782 if (cnt == 0) return;
\r
784 p = &HighLnSpr[DrawScanline][2];
\r
786 // Go through sprites backwards:
\r
787 for (cnt--; cnt >= 0; cnt--)
\r
789 int *sprite, code, pal, tile, sx, sy;
\r
790 int offs, delta, width, height, row;
\r
792 offs = (p[cnt] & 0x7f) * 2;
\r
793 sprite = HighPreSpr + offs;
\r
795 pal = (code>>9)&0x30;
\r
797 if (sh && pal == 0x30)
\r
799 if (code & 0x8000) // hi priority
\r
801 if (code&0x800) fTileFunc=TileFlipSH;
\r
802 else fTileFunc=TileNormSH;
\r
804 if (code&0x800) fTileFunc=TileFlipSH_onlyop_lp;
\r
805 else fTileFunc=TileNormSH_onlyop_lp;
\r
808 if (!(code & 0x8000)) continue; // non-operator low sprite, already drawn
\r
809 if (code&0x800) fTileFunc=TileFlip;
\r
810 else fTileFunc=TileNorm;
\r
813 // parse remaining sprite data
\r
817 height=(sy>>24)&7; // Width and height in tiles
\r
818 sy=(sy<<16)>>16; // Y
\r
820 row=DrawScanline-sy; // Row of the sprite we are on
\r
822 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
824 tile=code + (row>>3); // Tile number increases going down
\r
825 delta=height; // Delta to increase tile by going right
\r
826 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
828 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
829 delta<<=4; // Delta of address
\r
831 for (; width; width--,sx+=8,tile+=delta)
\r
833 if(sx<=0) continue;
\r
834 if(sx>=328) break; // Offscreen
\r
836 tile&=0x7fff; // Clip tile address
\r
837 fTileFunc(sx,tile,pal);
\r
843 static void DrawSpritesHiAS(int prio, int sh)
\r
845 int (*fTileFunc)(int sx,int addr,int pal);
\r
847 int entry, cnt, sh_cnt = 0;
\r
849 cnt = HighLnSpr[DrawScanline][0] & 0x7f;
\r
850 if (cnt == 0) return;
\r
852 p = &HighLnSpr[DrawScanline][2];
\r
854 // Go through sprites:
\r
855 for (entry = 0; entry < cnt; entry++)
\r
857 int *sprite, code, pal, tile, sx, sy;
\r
858 int offs, delta, width, height, row;
\r
860 offs = (p[entry] & 0x7f) * 2;
\r
861 sprite = HighPreSpr + offs;
\r
863 pal = (code>>9)&0x30;
\r
865 if (code & 0x8000) // hi priority
\r
867 if (sh && pal == 0x30)
\r
869 if (code&0x800) fTileFunc=TileFlipAS_noop;
\r
870 else fTileFunc=TileNormAS_noop;
\r
872 if (code&0x800) fTileFunc=TileFlipAS;
\r
873 else fTileFunc=TileNormAS;
\r
876 if (code&0x800) fTileFunc=TileFlipAS_onlymark;
\r
877 else fTileFunc=TileNormAS_onlymark;
\r
879 if (sh && pal == 0x30)
\r
880 p[sh_cnt++] = offs / 2; // re-save for sh/hi pass
\r
882 // parse remaining sprite data
\r
886 height=(sy>>24)&7; // Width and height in tiles
\r
887 sy=(sy<<16)>>16; // Y
\r
889 row=DrawScanline-sy; // Row of the sprite we are on
\r
891 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
893 tile=code + (row>>3); // Tile number increases going down
\r
894 delta=height; // Delta to increase tile by going right
\r
895 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
897 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
898 delta<<=4; // Delta of address
\r
901 for (; width; width--,sx+=8,tile+=delta)
\r
903 if(sx<=0) continue;
\r
904 if(sx>=328) break; // Offscreen
\r
906 tile&=0x7fff; // Clip tile address
\r
907 fTileFunc(sx,tile,pal);
\r
913 /* nasty 1: remove 'sprite' flags */
\r
915 int c = 320/4, *zb = (int *)(HighCol+8);
\r
918 *zb++ &= 0x7f7f7f7f;
\r
922 /* nasty 2: sh operator pass */
\r
923 HighLnSpr[DrawScanline][0] = sh_cnt;
\r
924 DrawSpritesSHi(1, 1);
\r
928 // Index + 0 : ----hhvv -lllllll -------y yyyyyyyy
\r
929 // Index + 4 : -------x xxxxxxxx pccvhnnn nnnnnnnn
\r
931 // Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size
\r
932 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
934 void PrepareSprites(int full)
\r
936 struct PicoVideo *pvid=&Pico.video;
\r
939 int *pd = HighPreSpr;
\r
940 int max_lines = 224, max_sprites = 80, max_width = 328;
\r
941 int max_line_sprites = 20; // 20 sprites, 40 tiles
\r
943 if (!(Pico.video.reg[12]&1))
\r
944 max_sprites = 64, max_line_sprites = 16, max_width = 264;
\r
945 if (PicoOpt & POPT_DIS_SPRITE_LIM)
\r
946 max_line_sprites = MAX_LINE_SPRITES;
\r
948 if (pvid->reg[1]&8) max_lines = 240;
\r
950 table=pvid->reg[5]&0x7f;
\r
951 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
952 table<<=8; // Get sprite table address/2
\r
957 // updates: tilecode, sx
\r
958 for (u=0; u < max_lines && (pack = *pd); u++, pd+=2)
\r
960 unsigned int *sprite;
\r
961 int code2, sx, sy, height;
\r
963 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
965 // parse sprite info
\r
967 sx = (code2>>16)&0x1ff;
\r
968 sx -= 0x78; // Get X coordinate + 8
\r
969 sy = (pack << 16) >> 16;
\r
970 height = (pack >> 24) & 0xf;
\r
972 if (sy < max_lines && sy + (height<<3) > DrawScanline && // sprite onscreen (y)?
\r
973 (sx > -24 || sx < max_width)) // onscreen x
\r
975 int y = (sy >= DrawScanline) ? sy : DrawScanline;
\r
976 int entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80);
\r
977 for (; y < sy + (height<<3) && y < max_lines; y++)
\r
980 cnt = HighLnSpr[y][0] & 0x7f;
\r
981 if (cnt >= max_line_sprites) continue; // sprite limit?
\r
983 for (i = 0; i < cnt; i++)
\r
984 if (((HighLnSpr[y][2+i] ^ entry) & 0x7f) == 0) goto found;
\r
986 // this sprite was previously missing
\r
987 HighLnSpr[y][2+cnt] = entry;
\r
988 HighLnSpr[y][0] = cnt + 1;
\r
991 rendstatus |= PDRAW_HAVE_HI_SPR;
\r
992 else rendstatus |= PDRAW_HAVE_LO_SPR;
\r
996 code2 &= ~0xfe000000;
\r
997 code2 -= 0x00780000; // Get X coordinate + 8 in upper 16 bits
\r
1000 // Find next sprite
\r
1001 link=(sprite[0]>>16)&0x7f;
\r
1002 if (!link) break; // End of sprites
\r
1007 for (u = 0; u < max_lines; u++)
\r
1008 *((int *)&HighLnSpr[u][0]) = 0;
\r
1010 for (u = 0; u < max_lines; u++)
\r
1012 unsigned int *sprite;
\r
1013 int code, code2, sx, sy, hv, height, width;
\r
1016 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
1018 // parse sprite info
\r
1020 sy = (code&0x1ff)-0x80;
\r
1021 hv = (code>>24)&0xf;
\r
1022 height = (hv&3)+1;
\r
1024 width = (hv>>2)+1;
\r
1025 code2 = sprite[1];
\r
1026 sx = (code2>>16)&0x1ff;
\r
1027 sx -= 0x78; // Get X coordinate + 8
\r
1028 sx_min = 8-(width<<3);
\r
1030 if (sy < max_lines && sy + (height<<3) > DrawScanline) // sprite onscreen (y)?
\r
1032 int y = (sy >= DrawScanline) ? sy : DrawScanline;
\r
1033 int entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80);
\r
1034 for (; y < sy + (height<<3) && y < max_lines; y++)
\r
1036 int cnt = HighLnSpr[y][0];
\r
1037 if (cnt >= max_line_sprites) continue; // sprite limit?
\r
1039 if (HighLnSpr[y][1] >= max_line_sprites*2) { // tile limit?
\r
1040 HighLnSpr[y][0] |= 0x80;
\r
1043 HighLnSpr[y][1] += width;
\r
1045 if (sx == -0x78) {
\r
1047 HighLnSpr[y][0] |= 0x80; // masked, no more sprites for this line
\r
1050 // must keep the first sprite even if it's offscreen, for masking
\r
1051 if (cnt > 0 && (sx <= sx_min || sx >= max_width)) continue; // offscreen x
\r
1053 HighLnSpr[y][2+cnt] = entry;
\r
1054 HighLnSpr[y][0] = cnt + 1;
\r
1056 rendstatus |= PDRAW_HAVE_HI_SPR;
\r
1057 else rendstatus |= PDRAW_HAVE_LO_SPR;
\r
1061 *pd++ = (width<<28)|(height<<24)|(hv<<16)|((unsigned short)sy);
\r
1062 *pd++ = (sx<<16)|((unsigned short)code2);
\r
1064 // Find next sprite
\r
1065 link=(code>>16)&0x7f;
\r
1066 if (!link) break; // End of sprites
\r
1071 for (u = 0; u < max_lines; u++)
\r
1074 printf("c%03i: %2i, %2i: ", u, HighLnSpr[u][0] & 0x7f, HighLnSpr[u][1]);
\r
1075 for (y = 0; y < HighLnSpr[u][0] & 0x7f; y++)
\r
1076 printf(" %i", HighLnSpr[u][y+2]);
\r
1083 #ifndef _ASM_DRAW_C
\r
1084 static void DrawAllSprites(int prio, int sh)
\r
1086 int rs = rendstatus, scan = DrawScanline;
\r
1090 if (rs & (PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES)) {
\r
1091 //elprintf(EL_STATUS, "PrepareSprites(%i)", (rs>>4)&1);
\r
1092 PrepareSprites(rs & PDRAW_DIRTY_SPRITES);
\r
1093 rendstatus = rs & ~(PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES);
\r
1096 cnt = HighLnSpr[scan][0] & 0x7f;
\r
1097 if (cnt == 0) return;
\r
1099 p = &HighLnSpr[scan][2];
\r
1101 // Go through sprites backwards:
\r
1102 for (cnt--; cnt >= 0; cnt--)
\r
1105 if ((p[cnt] >> 7) != prio) continue;
\r
1106 offs = (p[cnt]&0x7f) * 2;
\r
1107 DrawSprite(HighPreSpr + offs, sh);
\r
1112 // --------------------------------------------
\r
1114 static void BackFill(int reg7, int sh)
\r
1116 unsigned int back;
\r
1118 // Start with a blank scanline (background colour):
\r
1124 memset32((int *)(HighCol+8), back, 320/4);
\r
1128 // --------------------------------------------
\r
1130 unsigned short HighPal[0x100];
\r
1132 #ifndef _ASM_DRAW_C
\r
1133 static void FinalizeLineBGR444(int sh)
\r
1135 unsigned short *pd=DrawLineDest;
\r
1136 unsigned char *ps=HighCol+8;
\r
1137 unsigned short *pal=Pico.cram;
\r
1138 int len, i, t, mask=0xff;
\r
1140 if (Pico.video.reg[12]&1) {
\r
1143 if(!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1149 if(Pico.m.dirtyPal) {
\r
1150 blockcpy(pal, Pico.cram, 0x40*2);
\r
1151 // shadowed pixels
\r
1152 for(i = 0x3f; i >= 0; i--)
\r
1153 pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x0777);
\r
1154 // hilighted pixels
\r
1155 for(i = 0x3f; i >= 0; i--) {
\r
1156 t=pal[i]&0xeee;t+=0x444;if(t&0x10)t|=0xe;if(t&0x100)t|=0xe0;if(t&0x1000)t|=0xe00;t&=0xeee;
\r
1157 pal[0x80|i]=(unsigned short)t;
\r
1159 Pico.m.dirtyPal = 0;
\r
1163 if (!sh && (rendstatus & PDRAW_ACC_SPRITES))
\r
1164 mask=0x3f; // accurate sprites
\r
1166 for(i = 0; i < len; i++)
\r
1167 pd[i] = pal[ps[i] & mask];
\r
1171 static void FinalizeLineRGB555(int sh)
\r
1173 unsigned short *pd=DrawLineDest;
\r
1174 unsigned char *ps=HighCol+8;
\r
1175 unsigned short *pal=HighPal;
\r
1176 int len, i, t, dirtyPal = Pico.m.dirtyPal;
\r
1180 unsigned int *spal=(void *)Pico.cram;
\r
1181 unsigned int *dpal=(void *)HighPal;
\r
1182 for (i = 0x3f/2; i >= 0; i--)
\r
1184 dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
\r
1186 dpal[i] = ((spal[i]&0x000f000f)<<12)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)>>7);
\r
1188 Pico.m.dirtyPal = 0;
\r
1194 // shadowed pixels
\r
1195 for (i = 0x3f; i >= 0; i--)
\r
1196 pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x738e);
\r
1197 // hilighted pixels
\r
1198 for (i = 0x3f; i >= 0; i--) {
\r
1199 t=pal[i]&0xe71c;t+=0x4208;if(t&0x20)t|=0x1c;if(t&0x800)t|=0x700;if(t&0x10000)t|=0xe000;t&=0xe71c;
\r
1200 pal[0x80|i]=(unsigned short)t;
\r
1205 if (Pico.video.reg[12]&1) {
\r
1208 if (!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1215 if (!sh && (rendstatus & PDRAW_ACC_SPRITES))
\r
1216 mask=0x3f; // accurate sprites, upper bits are priority stuff
\r
1218 for (i = 0; i < len; i++)
\r
1219 pd[i] = pal[ps[i] & mask];
\r
1221 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1222 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1223 if (!sh && (rendstatus & PDRAW_ACC_SPRITES))
\r
1224 amips_clut_6bit(pd, ps, pal, len);
\r
1225 else amips_clut(pd, ps, pal, len);
\r
1231 static void FinalizeLine8bit(int sh)
\r
1233 unsigned char *pd=DrawLineDest;
\r
1234 int len, rs = rendstatus;
\r
1235 static int dirty_count;
\r
1237 if (!sh && !(rs & PDRAW_ACC_SPRITES) && Pico.m.dirtyPal == 1 && DrawScanline < 222)
\r
1239 // a hack for mid-frame palette changes
\r
1240 if (!(rs & PDRAW_SONIC_MODE))
\r
1242 else dirty_count++;
\r
1243 rs |= PDRAW_SONIC_MODE;
\r
1245 if (dirty_count == 3) {
\r
1246 blockcpy(HighPal, Pico.cram, 0x40*2);
\r
1247 } else if (dirty_count == 11) {
\r
1248 blockcpy(HighPal+0x40, Pico.cram, 0x40*2);
\r
1252 if (Pico.video.reg[12]&1) {
\r
1255 if (!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1259 if (!sh && (rs & PDRAW_SONIC_MODE)) {
\r
1260 if (dirty_count >= 11) {
\r
1261 blockcpy_or(pd, HighCol+8, len, 0x80);
\r
1263 blockcpy_or(pd, HighCol+8, len, 0x40);
\r
1266 blockcpy(pd, HighCol+8, len);
\r
1270 static void (*FinalizeLine)(int sh) = FinalizeLineBGR444;
\r
1272 // --------------------------------------------
\r
1274 static void DrawBlankedLine(void)
\r
1276 int sh=(Pico.video.reg[0xC]&8)>>3; // shadow/hilight?
\r
1278 if (PicoScanBegin != NULL)
\r
1279 PicoScanBegin(DrawScanline);
\r
1281 BackFill(Pico.video.reg[7], sh);
\r
1283 if (FinalizeLine != NULL)
\r
1286 if (PicoScanEnd != NULL)
\r
1287 PicoScanEnd(DrawScanline);
\r
1290 static int DrawDisplay(int sh, int as)
\r
1292 struct PicoVideo *pvid=&Pico.video;
\r
1293 int win=0,edge=0,hvwind=0;
\r
1294 int maxw, maxcells;
\r
1296 rendstatus &= ~(PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO);
\r
1298 if(pvid->reg[12]&1) {
\r
1299 maxw = 328; maxcells = 40;
\r
1301 maxw = 264; maxcells = 32;
\r
1304 // Find out if the window is on this line:
\r
1305 win=pvid->reg[0x12];
\r
1306 edge=(win&0x1f)<<3;
\r
1308 if (win&0x80) { if (DrawScanline>=edge) hvwind=1; }
\r
1309 else { if (DrawScanline< edge) hvwind=1; }
\r
1311 if (!hvwind) { // we might have a vertical window here
\r
1312 win=pvid->reg[0x11];
\r
1315 if (!edge) hvwind=1;
\r
1316 else if(edge < (maxcells>>1)) hvwind=2;
\r
1319 else if(edge < (maxcells>>1)) hvwind=2;
\r
1324 DrawLayer(1|((sh|as)<<1), HighCacheB, 0, maxcells);
\r
1326 DrawWindow(0, maxcells>>1, 0, sh|as);
\r
1327 else if (hvwind == 2) {
\r
1328 // ahh, we have vertical window
\r
1329 DrawLayer(0|((sh|as)<<1), HighCacheA, (win&0x80) ? 0 : edge<<1, (win&0x80) ? edge<<1 : maxcells);
\r
1330 DrawWindow( (win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh|as);
\r
1332 DrawLayer(0|((sh|as)<<1), HighCacheA, 0, maxcells);
\r
1333 if (rendstatus & PDRAW_HAVE_LO_SPR)
\r
1334 DrawAllSpritesLoPri(0, sh);
\r
1336 if (HighCacheB[0]) DrawTilesFromCache(HighCacheB, sh, maxw);
\r
1338 DrawWindow(0, maxcells>>1, 1, sh);
\r
1339 else if (hvwind == 2) {
\r
1340 if(HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, (win&0x80) ? edge<<4 : maxw);
\r
1341 DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh);
\r
1343 if (HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, maxw);
\r
1344 if ((rendstatus & PDRAW_HAVE_HI_SPR) || sh)
\r
1345 DrawAllSpritesHiPri(1, sh);
\r
1350 for (a = 0, c = HighCacheA; *c; c++, a++);
\r
1351 for (b = 0, c = HighCacheB; *c; c++, b++);
\r
1352 printf("%i:%03i: a=%i, b=%i\n", Pico.m.frame_count, DrawScanline, a, b);
\r
1360 PICO_INTERNAL void PicoFrameStart(void)
\r
1362 // prepare to do this frame
\r
1363 int sh = Pico.video.reg[0xC] & 8; // shadow/hilight?
\r
1365 if (PicoOpt & POPT_ACC_SPRITES)
\r
1366 rendstatus |= PDRAW_ACC_SPRITES;
\r
1370 DrawAllSpritesLoPri = DrawAllSprites;
\r
1371 DrawAllSpritesHiPri = DrawSpritesSHi;
\r
1375 DrawAllSpritesLoPri =
\r
1376 DrawAllSpritesHiPri = DrawAllSprites;
\r
1378 if (rendstatus & PDRAW_ACC_SPRITES)
\r
1379 DrawAllSpritesHiPri = DrawSpritesHiAS;
\r
1380 if ((Pico.video.reg[12]&6) == 6) {
\r
1381 rendstatus |= PDRAW_INTERLACE; // interlace mode
\r
1382 DrawAllSpritesLoPri =
\r
1383 DrawAllSpritesHiPri = DrawAllSpritesInterlace;
\r
1386 if (Pico.m.dirtyPal) Pico.m.dirtyPal = 2; // reset dirty if needed
\r
1389 PrepareSprites(1);
\r
1393 static void PicoLine(void)
\r
1396 if (skip_next_line>0) { skip_next_line--; return; } // skip rendering lines
\r
1398 sh=(Pico.video.reg[0xC]&8)>>3; // shadow/hilight?
\r
1399 if (rendstatus & PDRAW_ACC_SPRITES) as|=1; // accurate sprites
\r
1401 if (PicoScanBegin != NULL)
\r
1402 skip_next_line = PicoScanBegin(DrawScanline);
\r
1405 BackFill(Pico.video.reg[7], sh|as);
\r
1406 if (Pico.video.reg[1]&0x40)
\r
1407 DrawDisplay(sh, as);
\r
1409 if (FinalizeLine != NULL)
\r
1412 if (PicoScanEnd != NULL)
\r
1413 PicoScanEnd(DrawScanline);
\r
1416 void PicoDrawSync(int to, int blank_last_line)
\r
1418 for (; DrawScanline < to; DrawScanline++)
\r
1420 #if !CAN_HANDLE_240_LINES
\r
1421 if (DrawScanline >= 224) break;
\r
1426 #if !CAN_HANDLE_240_LINES
\r
1427 if (DrawScanline >= 224) DrawScanline = 240, return;
\r
1431 if (DrawScanline <= to)
\r
1433 if (blank_last_line)
\r
1434 DrawBlankedLine();
\r
1440 void PicoDrawSetColorFormat(int which)
\r
1444 case 2: FinalizeLine = FinalizeLine8bit; break;
\r
1445 case 1: FinalizeLine = FinalizeLineRGB555; break;
\r
1446 case 0: FinalizeLine = FinalizeLineBGR444; break;
\r
1447 default:FinalizeLine = NULL; break;
\r
1449 #if OVERRIDE_HIGHCOL
\r
1450 if (which) HighCol=DefHighCol;
\r