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 // draw a sprite pixel, process operator colors
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148 #define pix_sh(x) \
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150 else if (t==0xe) pd[x]=(pd[x]&0x3f)|0x80; /* hilight */ \
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151 else if (t==0xf) pd[x]= pd[x] |0xc0; /* shadow */ \
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154 TileNormMaker(TileNormSH, pix_sh)
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155 TileFlipMaker(TileFlipSH, pix_sh)
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157 #ifndef _ASM_DRAW_C
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158 // draw a sprite pixel ignoring operator colors
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159 #define pix_sh_noop(x) \
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160 if (t && t < 0xe) \
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163 TileNormMaker(TileNormSH_noop, pix_sh_noop)
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164 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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175 // draw a sprite pixel (AS)
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176 #define pix_as(x) \
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177 if (t && !(pd[x]&0x80)) pd[x]=pal|t
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179 TileNormMaker(TileNormAS, pix_as)
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180 TileFlipMaker(TileFlipAS, pix_as)
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182 // draw a sprite pixel, skip operator colors (AS)
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183 #define pix_sh_as_noop(x) \
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184 if (t && t < 0xe && !(pd[x]&0x80)) pd[x]=pal|t
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186 TileNormMaker(TileNormAS_noop, pix_sh_as_noop)
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187 TileFlipMaker(TileFlipAS_noop, pix_sh_as_noop)
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189 // mark pixel as sprite pixel (AS)
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190 #define pix_sh_as_onlymark(x) \
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193 TileNormMaker(TileNormAS_onlymark, pix_sh_as_onlymark)
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194 TileFlipMaker(TileFlipAS_onlymark, pix_sh_as_onlymark)
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197 // --------------------------------------------
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199 #ifndef _ASM_DRAW_C
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200 static void DrawStrip(struct TileStrip *ts, int plane_sh, int cellskip)
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202 int tilex,dx,ty,code=0,addr=0,cells;
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203 int oldcode=-1,blank=-1; // The tile we know is blank
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206 // Draw tiles across screen:
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207 sh=(plane_sh<<5)&0x40;
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208 tilex=((-ts->hscroll)>>3)+cellskip;
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209 ty=(ts->line&7)<<1; // Y-Offset into tile
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210 dx=((ts->hscroll-1)&7)+1;
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211 cells = ts->cells - cellskip;
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212 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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215 for (; cells > 0; dx+=8,tilex++,cells--)
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219 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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220 if (code==blank) continue;
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221 if (code>>15) { // high priority tile
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222 int cval = code | (dx<<16) | (ty<<25);
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223 if(code&0x1000) cval^=7<<26;
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224 *ts->hc++ = cval; // cache it
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228 if (code!=oldcode) {
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230 // Get tile address/2:
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231 addr=(code&0x7ff)<<4;
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233 if (code&0x1000) addr^=0xe; // Y-flip
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235 pal=((code>>9)&0x30)|sh;
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238 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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239 else zero=TileNorm(dx,addr,pal);
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241 if (zero) blank=code; // We know this tile is blank now
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244 // terminate the cache list
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246 // if oldcode wasn't changed, it means all layer is hi priority
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247 if (oldcode == -1) rendstatus |= PDRAW_PLANE_HI_PRIO;
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251 void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
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253 int tilex,dx,code=0,addr=0,cell=0;
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254 int oldcode=-1,blank=-1; // The tile we know is blank
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255 int pal=0,scan=DrawScanline;
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257 // Draw tiles across screen:
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258 tilex=(-ts->hscroll)>>3;
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259 dx=((ts->hscroll-1)&7)+1;
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260 if(dx != 8) cell--; // have hscroll, start with negative cell
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265 for (; cell < ts->cells; dx+=8,tilex++,cell++)
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267 int zero=0,nametabadd,ty;
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272 vscroll=Pico.vsram[(plane_sh&1)+(cell&~1)];
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274 // Find the line in the name table
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275 line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..
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276 nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width]
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277 ty=(line&7)<<1; // Y-Offset into tile
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280 code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];
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281 if (code==blank) continue;
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282 if (code>>15) { // high priority tile
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283 int cval = code | (dx<<16) | (ty<<25);
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284 if(code&0x1000) cval^=7<<26;
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285 *ts->hc++ = cval; // cache it
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289 if (code!=oldcode) {
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291 // Get tile address/2:
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292 addr=(code&0x7ff)<<4;
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293 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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295 pal=((code>>9)&0x30)|((plane_sh<<5)&0x40);
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298 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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299 else zero=TileNorm(dx,addr,pal);
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301 if (zero) blank=code; // We know this tile is blank now
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304 // terminate the cache list
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306 if (oldcode == -1) rendstatus |= PDRAW_PLANE_HI_PRIO;
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310 #ifndef _ASM_DRAW_C
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313 void DrawStripInterlace(struct TileStrip *ts)
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315 int tilex=0,dx=0,ty=0,code=0,addr=0,cells;
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316 int oldcode=-1,blank=-1; // The tile we know is blank
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319 // Draw tiles across screen:
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320 tilex=(-ts->hscroll)>>3;
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321 ty=(ts->line&15)<<1; // Y-Offset into tile
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322 dx=((ts->hscroll-1)&7)+1;
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324 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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326 for (; cells; dx+=8,tilex++,cells--)
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330 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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331 if (code==blank) continue;
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332 if (code>>15) { // high priority tile
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333 int cval = (code&0xfc00) | (dx<<16) | (ty<<25);
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334 cval|=(code&0x3ff)<<1;
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335 if(code&0x1000) cval^=0xf<<26;
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336 *ts->hc++ = cval; // cache it
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340 if (code!=oldcode) {
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342 // Get tile address/2:
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343 addr=(code&0x7ff)<<5;
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344 if (code&0x1000) addr+=30-ty; else addr+=ty; // Y-flip
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346 // pal=Pico.cram+((code>>9)&0x30);
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347 pal=((code>>9)&0x30);
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350 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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351 else zero=TileNorm(dx,addr,pal);
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353 if (zero) blank=code; // We know this tile is blank now
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356 // terminate the cache list
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360 // --------------------------------------------
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362 #ifndef _ASM_DRAW_C
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363 static void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells)
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365 struct PicoVideo *pvid=&Pico.video;
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366 const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid)
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367 struct TileStrip ts;
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368 int width, height, ymask;
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374 // Work out the TileStrip to draw
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376 // Work out the name table size: 32 64 or 128 tiles (0-3)
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377 width=pvid->reg[16];
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378 height=(width>>4)&3; width&=3;
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380 ts.xmask=(1<<shift[width])-1; // X Mask in tiles (0x1f-0x7f)
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381 ymask=(height<<8)|0xff; // Y Mask in pixels
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382 if(width == 1) ymask&=0x1ff;
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383 else if(width>1) ymask =0x0ff;
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385 // Find name table:
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386 if (plane_sh&1) ts.nametab=(pvid->reg[4]&0x07)<<12; // B
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387 else ts.nametab=(pvid->reg[2]&0x38)<< 9; // A
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389 htab=pvid->reg[13]<<9; // Horizontal scroll table address
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390 if ( pvid->reg[11]&2) htab+=DrawScanline<<1; // Offset by line
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391 if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile
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392 htab+=plane_sh&1; // A or B
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394 // Get horizontal scroll value, will be masked later
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395 ts.hscroll=Pico.vram[htab&0x7fff];
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397 if((pvid->reg[12]&6) == 6) {
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398 // interlace mode 2
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399 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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401 // Find the line in the name table
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402 ts.line=(vscroll+(DrawScanline<<1))&((ymask<<1)|1);
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403 ts.nametab+=(ts.line>>4)<<shift[width];
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405 DrawStripInterlace(&ts);
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406 } else if( pvid->reg[11]&4) {
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407 // shit, we have 2-cell column based vscroll
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408 // luckily this doesn't happen too often
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409 ts.line=ymask|(shift[width]<<24); // save some stuff instead of line
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410 DrawStripVSRam(&ts, plane_sh, cellskip);
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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)&ymask;
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416 ts.nametab+=(ts.line>>3)<<shift[width];
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418 DrawStrip(&ts, plane_sh, cellskip);
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423 // --------------------------------------------
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425 // tstart & tend are tile pair numbers
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426 static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
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428 struct PicoVideo *pvid=&Pico.video;
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429 int tilex,ty,nametab,code=0;
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430 int blank=-1; // The tile we know is blank
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432 // Find name table line:
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433 if (pvid->reg[12]&1)
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435 nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode
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436 nametab+=(DrawScanline>>3)<<6;
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440 nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode
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441 nametab+=(DrawScanline>>3)<<5;
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446 if (!(rendstatus & PDRAW_WND_DIFF_PRIO)) {
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447 // check the first tile code
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448 code=Pico.vram[nametab+tilex];
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449 // if the whole window uses same priority (what is often the case), we may be able to skip this field
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450 if ((code>>15) != prio) return;
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454 ty=(DrawScanline&7)<<1; // Y-Offset into tile
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456 // Draw tiles across screen:
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459 for (; tilex < tend; tilex++)
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464 code=Pico.vram[nametab+tilex];
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465 if (code==blank) continue;
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466 if ((code>>15) != prio) {
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467 rendstatus |= PDRAW_WND_DIFF_PRIO;
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471 pal=((code>>9)&0x30);
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473 // Get tile address/2:
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474 addr=(code&0x7ff)<<4;
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475 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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477 if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
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478 else zero=TileNorm(8+(tilex<<3),addr,pal);
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480 if (zero) blank=code; // We know this tile is blank now
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485 for (; tilex < tend; tilex++)
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490 code=Pico.vram[nametab+tilex];
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491 if(code==blank) continue;
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492 if((code>>15) != prio) {
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493 rendstatus |= PDRAW_WND_DIFF_PRIO;
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497 pal=((code>>9)&0x30);
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500 int *zb = (int *)(HighCol+8+(tilex<<3));
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501 *zb++ &= 0x3f3f3f3f;
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507 // Get tile address/2:
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508 addr=(code&0x7ff)<<4;
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509 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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511 if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
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512 else zero=TileNorm(8+(tilex<<3),addr,pal);
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514 if (zero) blank=code; // We know this tile is blank now
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519 // --------------------------------------------
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521 static void DrawTilesFromCacheShPrep(void)
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523 // as some layer has covered whole line with hi priority tiles,
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524 // we can process whole line and then act as if sh/hi mode was off.
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525 int c = 320/4, *zb = (int *)(HighCol+8);
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526 rendstatus |= PDRAW_SHHI_DONE;
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529 *zb++ &= 0x3f3f3f3f;
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533 static void DrawTilesFromCache(int *hc, int sh, int rlim)
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535 int code, addr, dx;
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538 // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it
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540 if (sh && (rendstatus & (PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO)))
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542 if (!(rendstatus & PDRAW_SHHI_DONE))
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543 DrawTilesFromCacheShPrep();
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549 short blank=-1; // The tile we know is blank
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550 while ((code=*hc++)) {
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552 if((short)code == blank) continue;
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553 // Get tile address/2:
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554 addr=(code&0x7ff)<<4;
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555 addr+=(unsigned int)code>>25; // y offset into tile
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556 dx=(code>>16)&0x1ff;
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558 pal=((code>>9)&0x30);
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559 if (rlim-dx < 0) goto last_cut_tile;
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561 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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562 else zero=TileNorm(dx,addr,pal);
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564 if (zero) blank=(short)code;
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569 while ((code=*hc++)) {
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571 // Get tile address/2:
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572 addr=(code&0x7ff)<<4;
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573 addr+=(unsigned int)code>>25; // y offset into tile
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574 dx=(code>>16)&0x1ff;
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576 *zb++ &= 0x3f; *zb++ &= 0x3f; *zb++ &= 0x3f; *zb++ &= 0x3f;
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577 *zb++ &= 0x3f; *zb++ &= 0x3f; *zb++ &= 0x3f; *zb++ &= 0x3f;
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579 pal=((code>>9)&0x30);
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580 if (rlim-dx < 0) goto last_cut_tile;
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582 if (code&0x0800) TileFlip(dx,addr,pal);
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583 else TileNorm(dx,addr,pal);
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590 unsigned int t, pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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591 unsigned char *pd = HighCol+dx;
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597 case 7: t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8)); // "break" is left out intentionally
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598 case 6: t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));
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599 case 5: t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t ));
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600 case 4: t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));
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601 case 3: t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));
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602 case 2: t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));
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603 case 1: t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));
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611 case 7: t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));
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612 case 6: t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));
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613 case 5: t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));
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614 case 4: t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t ));
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615 case 3: t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));
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616 case 2: t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));
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617 case 1: t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));
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624 // --------------------------------------------
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626 // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size
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627 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
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629 static void DrawSprite(int *sprite, int sh, int as)
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631 int width=0,height=0;
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634 int tile=0,delta=0;
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636 int (*fTileFunc)(int sx,int addr,int pal);
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638 // parse the sprite data
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643 height=(sy>>24)&7; // Width and height in tiles
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644 sy=(sy<<16)>>16; // Y
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646 row=DrawScanline-sy; // Row of the sprite we are on
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648 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
650 tile=code + (row>>3); // Tile number increases going down
\r
651 delta=height; // Delta to increase tile by going right
\r
652 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
654 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
655 delta<<=4; // Delta of address
\r
657 pal=(code>>9)&0x30;
\r
660 if (sh && (code&0x6000) == 0x6000) {
\r
661 if(code&0x0800) fTileFunc=TileFlipSH_noop;
\r
662 else fTileFunc=TileNormSH_noop;
\r
664 if(code&0x0800) fTileFunc=TileFlip;
\r
665 else fTileFunc=TileNorm;
\r
668 for (; width; width--,sx+=8,tile+=delta)
\r
670 if(sx<=0) continue;
\r
671 if(sx>=328) break; // Offscreen
\r
673 tile&=0x7fff; // Clip tile address
\r
674 fTileFunc(sx,tile,pal);
\r
679 static void DrawSpriteInterlace(unsigned int *sprite)
\r
681 int width=0,height=0;
\r
684 int tile=0,delta=0;
\r
687 // parse the sprite data
\r
690 sy=(sy&0x3ff)-0x100; // Y
\r
691 width=(height>>2)&3; height&=3;
\r
692 width++; height++; // Width and height in tiles
\r
694 row=(DrawScanline<<1)-sy; // Row of the sprite we are on
\r
697 sx=((code>>16)&0x1ff)-0x78; // X
\r
699 if (code&0x1000) row^=(16<<height)-1; // Flip Y
\r
701 tile=code&0x3ff; // Tile number
\r
702 tile+=row>>4; // Tile number increases going down
\r
703 delta=height; // Delta to increase tile by going right
\r
704 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
706 tile<<=5; tile+=(row&15)<<1; // Tile address
\r
708 delta<<=5; // Delta of address
\r
709 pal=((code>>9)&0x30); // Get palette pointer
\r
711 for (; width; width--,sx+=8,tile+=delta)
\r
713 if(sx<=0) continue;
\r
714 if(sx>=328) break; // Offscreen
\r
716 tile&=0x7fff; // Clip tile address
\r
717 if (code&0x0800) TileFlip(sx,tile,pal);
\r
718 else TileNorm(sx,tile,pal);
\r
723 static void DrawAllSpritesInterlace(int pri, int sh)
\r
725 struct PicoVideo *pvid=&Pico.video;
\r
726 int i,u,table,link=0,sline=DrawScanline<<1;
\r
727 unsigned int *sprites[80]; // Sprite index
\r
729 table=pvid->reg[5]&0x7f;
\r
730 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
731 table<<=8; // Get sprite table address/2
\r
733 for (i=u=0; u < 80 && i < 21; u++)
\r
735 unsigned int *sprite;
\r
736 int code, sx, sy, height;
\r
738 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
743 if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite
\r
745 // check if it is on this line
\r
746 sy = (code&0x3ff)-0x100;
\r
747 height = (((code>>24)&3)+1)<<4;
\r
748 if(sline < sy || sline >= sy+height) goto nextsprite; // no
\r
750 // check if sprite is not hidden offscreen
\r
751 sx = (sx>>16)&0x1ff;
\r
752 sx -= 0x78; // Get X coordinate + 8
\r
753 if(sx <= -8*3 || sx >= 328) goto nextsprite;
\r
755 // sprite is good, save it's pointer
\r
756 sprites[i++]=sprite;
\r
759 // Find next sprite
\r
760 link=(code>>16)&0x7f;
\r
761 if(!link) break; // End of sprites
\r
764 // Go through sprites backwards:
\r
765 for (i-- ;i>=0; i--)
\r
766 DrawSpriteInterlace(sprites[i]);
\r
770 #ifndef _ASM_DRAW_C
\r
771 // Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size
\r
772 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
773 static void DrawSpritesSHi(int prio, int sh)
\r
775 int (*fTileFunc)(int sx,int addr,int pal);
\r
779 cnt = HighLnSpr[DrawScanline][0] & 0x7f;
\r
780 if (cnt == 0) return;
\r
782 p = &HighLnSpr[DrawScanline][2];
\r
784 // Go through sprites backwards:
\r
785 for (cnt--; cnt >= 0; cnt--)
\r
787 int *sprite, code, pal, tile, sx, sy;
\r
788 int offs, delta, width, height, row;
\r
790 offs = (p[cnt] & 0x7f) * 2;
\r
791 sprite = HighPreSpr + offs;
\r
793 pal = (code>>9)&0x30;
\r
795 if (sh && pal == 0x30)
\r
797 if (code & 0x8000) // hi priority
\r
799 if (code&0x800) fTileFunc=TileFlipSH;
\r
800 else fTileFunc=TileNormSH;
\r
802 if (code&0x800) fTileFunc=TileFlipSH_onlyop_lp;
\r
803 else fTileFunc=TileNormSH_onlyop_lp;
\r
806 if (!(code & 0x8000)) continue; // non-operator low sprite, already drawn
\r
807 if (code&0x800) fTileFunc=TileFlip;
\r
808 else fTileFunc=TileNorm;
\r
811 // parse remaining sprite data
\r
815 height=(sy>>24)&7; // Width and height in tiles
\r
816 sy=(sy<<16)>>16; // Y
\r
818 row=DrawScanline-sy; // Row of the sprite we are on
\r
820 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
822 tile=code + (row>>3); // Tile number increases going down
\r
823 delta=height; // Delta to increase tile by going right
\r
824 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
826 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
827 delta<<=4; // Delta of address
\r
829 for (; width; width--,sx+=8,tile+=delta)
\r
831 if(sx<=0) continue;
\r
832 if(sx>=328) break; // Offscreen
\r
834 tile&=0x7fff; // Clip tile address
\r
835 fTileFunc(sx,tile,pal);
\r
841 static void DrawSpritesHiAS(int prio, int sh)
\r
843 int (*fTileFunc)(int sx,int addr,int pal);
\r
845 int entry, cnt, sh_cnt = 0;
\r
847 cnt = HighLnSpr[DrawScanline][0] & 0x7f;
\r
848 if (cnt == 0) return;
\r
850 p = &HighLnSpr[DrawScanline][2];
\r
852 // Go through sprites:
\r
853 for (entry = 0; entry < cnt; entry++)
\r
855 int *sprite, code, pal, tile, sx, sy;
\r
856 int offs, delta, width, height, row;
\r
858 offs = (p[entry] & 0x7f) * 2;
\r
859 sprite = HighPreSpr + offs;
\r
861 pal = (code>>9)&0x30;
\r
863 if (code & 0x8000) // hi priority
\r
865 if (sh && pal == 0x30)
\r
867 if (code&0x800) fTileFunc=TileFlipAS_noop;
\r
868 else fTileFunc=TileNormAS_noop;
\r
870 if (code&0x800) fTileFunc=TileFlipAS;
\r
871 else fTileFunc=TileNormAS;
\r
874 if (code&0x800) fTileFunc=TileFlipAS_onlymark;
\r
875 else fTileFunc=TileNormAS_onlymark;
\r
877 if (sh && pal == 0x30)
\r
878 p[sh_cnt++] = offs / 2; // re-save for sh/hi pass
\r
880 // parse remaining sprite data
\r
884 height=(sy>>24)&7; // Width and height in tiles
\r
885 sy=(sy<<16)>>16; // Y
\r
887 row=DrawScanline-sy; // Row of the sprite we are on
\r
889 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
891 tile=code + (row>>3); // Tile number increases going down
\r
892 delta=height; // Delta to increase tile by going right
\r
893 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
895 tile &= 0x7ff; tile<<=4; tile+=(row&7)<<1; // Tile address
\r
896 delta<<=4; // Delta of address
\r
899 for (; width; width--,sx+=8,tile+=delta)
\r
901 if(sx<=0) continue;
\r
902 if(sx>=328) break; // Offscreen
\r
904 tile&=0x7fff; // Clip tile address
\r
905 fTileFunc(sx,tile,pal);
\r
911 /* nasty 1: remove 'sprite' flags */
\r
913 int c = 320/4, *zb = (int *)(HighCol+8);
\r
916 *zb++ &= 0x7f7f7f7f;
\r
920 /* nasty 2: sh operator pass */
\r
921 HighLnSpr[DrawScanline][0] = sh_cnt;
\r
922 DrawSpritesSHi(1, 1);
\r
926 // Index + 0 : ----hhvv -lllllll -------y yyyyyyyy
\r
927 // Index + 4 : -------x xxxxxxxx pccvhnnn nnnnnnnn
\r
929 // Index + 0 : hhhhvvvv ----hhvv yyyyyyyy yyyyyyyy // v, h: vert./horiz. size
\r
930 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
932 void PrepareSprites(int full)
\r
934 struct PicoVideo *pvid=&Pico.video;
\r
937 int *pd = HighPreSpr;
\r
938 int max_lines = 224, max_sprites = 80, max_width = 328;
\r
939 int max_line_sprites = 20; // 20 sprites, 40 tiles
\r
941 if (!(Pico.video.reg[12]&1))
\r
942 max_sprites = 64, max_line_sprites = 16, max_width = 264;
\r
943 if (PicoOpt & POPT_DIS_SPRITE_LIM)
\r
944 max_line_sprites = MAX_LINE_SPRITES;
\r
946 if (pvid->reg[1]&8) max_lines = 240;
\r
948 table=pvid->reg[5]&0x7f;
\r
949 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
950 table<<=8; // Get sprite table address/2
\r
955 // updates: tilecode, sx
\r
956 for (u=0; u < max_lines && (pack = *pd); u++, pd+=2)
\r
958 unsigned int *sprite;
\r
959 int code2, sx, sy, height;
\r
961 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
963 // parse sprite info
\r
965 sx = (code2>>16)&0x1ff;
\r
966 sx -= 0x78; // Get X coordinate + 8
\r
967 sy = (pack << 16) >> 16;
\r
968 height = (pack >> 24) & 0xf;
\r
970 if (sy < max_lines && sy + (height<<3) > DrawScanline && // sprite onscreen (y)?
\r
971 (sx > -24 || sx < max_width)) // onscreen x
\r
973 int y = (sy >= DrawScanline) ? sy : DrawScanline;
\r
974 int entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80);
\r
975 for (; y < sy + (height<<3) && y < max_lines; y++)
\r
978 cnt = HighLnSpr[y][0] & 0x7f;
\r
979 if (cnt >= max_line_sprites) continue; // sprite limit?
\r
981 for (i = 0; i < cnt; i++)
\r
982 if (((HighLnSpr[y][2+i] ^ entry) & 0x7f) == 0) goto found;
\r
984 // this sprite was previously missing
\r
985 HighLnSpr[y][2+cnt] = entry;
\r
986 HighLnSpr[y][0] = cnt + 1;
\r
991 code2 &= ~0xfe000000;
\r
992 code2 -= 0x00780000; // Get X coordinate + 8 in upper 16 bits
\r
995 // Find next sprite
\r
996 link=(sprite[0]>>16)&0x7f;
\r
997 if (!link) break; // End of sprites
\r
1002 for (u = 0; u < max_lines; u++)
\r
1003 *((int *)&HighLnSpr[u][0]) = 0;
\r
1005 for (u = 0; u < max_lines; u++)
\r
1007 unsigned int *sprite;
\r
1008 int code, code2, sx, sy, hv, height, width;
\r
1011 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
1013 // parse sprite info
\r
1015 sy = (code&0x1ff)-0x80;
\r
1016 hv = (code>>24)&0xf;
\r
1017 height = (hv&3)+1;
\r
1019 width = (hv>>2)+1;
\r
1020 code2 = sprite[1];
\r
1021 sx = (code2>>16)&0x1ff;
\r
1022 sx -= 0x78; // Get X coordinate + 8
\r
1023 sx_min = 8-(width<<3);
\r
1025 if (sy < max_lines && sy + (height<<3) > DrawScanline) // sprite onscreen (y)?
\r
1027 int y = (sy >= DrawScanline) ? sy : DrawScanline;
\r
1028 int entry = ((pd - HighPreSpr) / 2) | ((code2>>8)&0x80);
\r
1029 for (; y < sy + (height<<3) && y < max_lines; y++)
\r
1031 int cnt = HighLnSpr[y][0];
\r
1032 if (cnt >= max_line_sprites) continue; // sprite limit?
\r
1034 if (HighLnSpr[y][1] >= max_line_sprites*2) { // tile limit?
\r
1035 HighLnSpr[y][0] |= 0x80;
\r
1038 HighLnSpr[y][1] += width;
\r
1040 if (sx == -0x78) {
\r
1042 HighLnSpr[y][0] |= 0x80; // masked, no more sprites for this line
\r
1045 // must keep the first sprite even if it's offscreen, for masking
\r
1046 if (cnt > 0 && (sx <= sx_min || sx >= max_width)) continue; // offscreen x
\r
1048 HighLnSpr[y][2+cnt] = entry;
\r
1049 HighLnSpr[y][0] = cnt + 1;
\r
1051 rendstatus |= PDRAW_HAVE_HI_SPR;
\r
1052 else rendstatus |= PDRAW_HAVE_LO_SPR;
\r
1056 *pd++ = (width<<28)|(height<<24)|(hv<<16)|((unsigned short)sy);
\r
1057 *pd++ = (sx<<16)|((unsigned short)code2);
\r
1059 // Find next sprite
\r
1060 link=(code>>16)&0x7f;
\r
1061 if (!link) break; // End of sprites
\r
1066 for (u = 0; u < max_lines; u++)
\r
1069 printf("c%03i: %2i, %2i: ", u, HighLnSpr[u][0] & 0x7f, HighLnSpr[u][1]);
\r
1070 for (y = 0; y < HighLnSpr[u][0] & 0x7f; y++)
\r
1071 printf(" %i", HighLnSpr[u][y+2]);
\r
1078 #ifndef _ASM_DRAW_C
\r
1079 static void DrawAllSprites(int prio, int sh)
\r
1081 int rs = rendstatus, scan = DrawScanline;
\r
1085 if (rs & (PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES)) {
\r
1086 //elprintf(EL_STATUS, "PrepareSprites(%i)", (rs>>4)&1);
\r
1087 PrepareSprites(rs & PDRAW_DIRTY_SPRITES);
\r
1088 rendstatus = rs & ~(PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES);
\r
1091 cnt = HighLnSpr[scan][0] & 0x7f;
\r
1092 if (cnt == 0) return;
\r
1094 p = &HighLnSpr[scan][2];
\r
1095 as = (rs & PDRAW_ACC_SPRITES) ? 1 : 0;
\r
1097 // Go through sprites backwards:
\r
1098 for (cnt--; cnt >= 0; cnt--)
\r
1101 if ((p[cnt] >> 7) != prio && !as) continue;
\r
1102 offs = (p[cnt]&0x7f) * 2;
\r
1103 DrawSprite(HighPreSpr + offs, sh, as);
\r
1108 // --------------------------------------------
\r
1110 static void BackFill(int reg7, int sh)
\r
1112 unsigned int back;
\r
1114 // Start with a blank scanline (background colour):
\r
1120 memset32((int *)(HighCol+8), back, 320/4);
\r
1124 // --------------------------------------------
\r
1126 unsigned short HighPal[0x100];
\r
1128 #ifndef _ASM_DRAW_C
\r
1129 static void FinalizeLineBGR444(int sh)
\r
1131 unsigned short *pd=DrawLineDest;
\r
1132 unsigned char *ps=HighCol+8;
\r
1133 unsigned short *pal=Pico.cram;
\r
1134 int len, i, t, mask=0xff;
\r
1136 if (Pico.video.reg[12]&1) {
\r
1139 if(!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1145 if(Pico.m.dirtyPal) {
\r
1146 blockcpy(pal, Pico.cram, 0x40*2);
\r
1147 // shadowed pixels
\r
1148 for(i = 0x3f; i >= 0; i--)
\r
1149 pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x0777);
\r
1150 // hilighted pixels
\r
1151 for(i = 0x3f; i >= 0; i--) {
\r
1152 t=pal[i]&0xeee;t+=0x444;if(t&0x10)t|=0xe;if(t&0x100)t|=0xe0;if(t&0x1000)t|=0xe00;t&=0xeee;
\r
1153 pal[0x80|i]=(unsigned short)t;
\r
1155 Pico.m.dirtyPal = 0;
\r
1159 if (!sh && (rendstatus & PDRAW_ACC_SPRITES))
\r
1160 mask=0x3f; // accurate sprites
\r
1162 for(i = 0; i < len; i++)
\r
1163 pd[i] = pal[ps[i] & mask];
\r
1167 static void FinalizeLineRGB555(int sh)
\r
1169 unsigned short *pd=DrawLineDest;
\r
1170 unsigned char *ps=HighCol+8;
\r
1171 unsigned short *pal=HighPal;
\r
1172 int len, i, t, dirtyPal = Pico.m.dirtyPal;
\r
1176 unsigned int *spal=(void *)Pico.cram;
\r
1177 unsigned int *dpal=(void *)HighPal;
\r
1178 for (i = 0x3f/2; i >= 0; i--)
\r
1180 dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
\r
1182 dpal[i] = ((spal[i]&0x000f000f)<<12)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)>>7);
\r
1184 Pico.m.dirtyPal = 0;
\r
1190 // shadowed pixels
\r
1191 for (i = 0x3f; i >= 0; i--)
\r
1192 pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x738e);
\r
1193 // hilighted pixels
\r
1194 for (i = 0x3f; i >= 0; i--) {
\r
1195 t=pal[i]&0xe71c;t+=0x4208;if(t&0x20)t|=0x1c;if(t&0x800)t|=0x700;if(t&0x10000)t|=0xe000;t&=0xe71c;
\r
1196 pal[0x80|i]=(unsigned short)t;
\r
1201 if (Pico.video.reg[12]&1) {
\r
1204 if (!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1211 if (!sh && (rendstatus & PDRAW_ACC_SPRITES))
\r
1212 mask=0x3f; // accurate sprites, upper bits are priority stuff
\r
1214 for (i = 0; i < len; i++)
\r
1215 pd[i] = pal[ps[i] & mask];
\r
1217 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1218 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1219 if (!sh && (rendstatus & PDRAW_ACC_SPRITES))
\r
1220 amips_clut_6bit(pd, ps, pal, len);
\r
1221 else amips_clut(pd, ps, pal, len);
\r
1227 static void FinalizeLine8bit(int sh)
\r
1229 unsigned char *pd=DrawLineDest;
\r
1230 int len, rs = rendstatus;
\r
1231 static int dirty_count;
\r
1233 if (!sh && !(rs & PDRAW_ACC_SPRITES) && Pico.m.dirtyPal == 1 && DrawScanline < 222)
\r
1235 // a hack for mid-frame palette changes
\r
1236 if (!(rs & PDRAW_SONIC_MODE))
\r
1238 else dirty_count++;
\r
1239 rs |= PDRAW_SONIC_MODE;
\r
1241 if (dirty_count == 3) {
\r
1242 blockcpy(HighPal, Pico.cram, 0x40*2);
\r
1243 } else if (dirty_count == 11) {
\r
1244 blockcpy(HighPal+0x40, Pico.cram, 0x40*2);
\r
1248 if (Pico.video.reg[12]&1) {
\r
1251 if (!(PicoOpt&POPT_DIS_32C_BORDER)) pd+=32;
\r
1255 if (!sh && (rs & PDRAW_SONIC_MODE)) {
\r
1256 if (dirty_count >= 11) {
\r
1257 blockcpy_or(pd, HighCol+8, len, 0x80);
\r
1259 blockcpy_or(pd, HighCol+8, len, 0x40);
\r
1262 blockcpy(pd, HighCol+8, len);
\r
1266 static void (*FinalizeLine)(int sh) = FinalizeLineBGR444;
\r
1268 // --------------------------------------------
\r
1270 static void DrawBlankedLine(void)
\r
1272 int sh=(Pico.video.reg[0xC]&8)>>3; // shadow/hilight?
\r
1274 if (PicoScanBegin != NULL)
\r
1275 PicoScanBegin(DrawScanline);
\r
1277 BackFill(Pico.video.reg[7], sh);
\r
1279 if (FinalizeLine != NULL)
\r
1282 if (PicoScanEnd != NULL)
\r
1283 PicoScanEnd(DrawScanline);
\r
1286 static int DrawDisplay(int sh, int as)
\r
1288 struct PicoVideo *pvid=&Pico.video;
\r
1289 int win=0,edge=0,hvwind=0;
\r
1290 int maxw, maxcells;
\r
1292 rendstatus &= ~(PDRAW_SHHI_DONE|PDRAW_PLANE_HI_PRIO);
\r
1294 if(pvid->reg[12]&1) {
\r
1295 maxw = 328; maxcells = 40;
\r
1297 maxw = 264; maxcells = 32;
\r
1300 // Find out if the window is on this line:
\r
1301 win=pvid->reg[0x12];
\r
1302 edge=(win&0x1f)<<3;
\r
1304 if (win&0x80) { if (DrawScanline>=edge) hvwind=1; }
\r
1305 else { if (DrawScanline< edge) hvwind=1; }
\r
1307 if (!hvwind) { // we might have a vertical window here
\r
1308 win=pvid->reg[0x11];
\r
1311 if (!edge) hvwind=1;
\r
1312 else if(edge < (maxcells>>1)) hvwind=2;
\r
1315 else if(edge < (maxcells>>1)) hvwind=2;
\r
1320 DrawLayer(1|((sh|as)<<1), HighCacheB, 0, maxcells);
\r
1322 DrawWindow(0, maxcells>>1, 0, sh|as);
\r
1323 else if (hvwind == 2) {
\r
1324 // ahh, we have vertical window
\r
1325 DrawLayer(0|((sh|as)<<1), HighCacheA, (win&0x80) ? 0 : edge<<1, (win&0x80) ? edge<<1 : maxcells);
\r
1326 DrawWindow( (win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh|as);
\r
1328 DrawLayer(0|((sh|as)<<1), HighCacheA, 0, maxcells);
\r
1329 if ((rendstatus & PDRAW_HAVE_LO_SPR) || as)
\r
1330 DrawAllSpritesLoPri(0, sh);
\r
1332 if (HighCacheB[0]) DrawTilesFromCache(HighCacheB, sh, maxw);
\r
1334 DrawWindow(0, maxcells>>1, 1, sh);
\r
1335 else if (hvwind == 2) {
\r
1336 if(HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, (win&0x80) ? edge<<4 : maxw);
\r
1337 DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh);
\r
1339 if (HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, maxw);
\r
1340 if ((rendstatus & PDRAW_HAVE_HI_SPR) || sh)
\r
1341 DrawAllSpritesHiPri(1, sh);
\r
1346 for (a = 0, c = HighCacheA; *c; c++, a++);
\r
1347 for (b = 0, c = HighCacheB; *c; c++, b++);
\r
1348 printf("%i:%03i: a=%i, b=%i\n", Pico.m.frame_count, DrawScanline, a, b);
\r
1356 PICO_INTERNAL void PicoFrameStart(void)
\r
1358 // prepare to do this frame
\r
1359 int sh = Pico.video.reg[0xC] & 8; // shadow/hilight?
\r
1361 if (PicoOpt & POPT_ACC_SPRITES)
\r
1362 rendstatus |= PDRAW_ACC_SPRITES;
\r
1364 if ((Pico.video.reg[12]&6) == 6) {
\r
1365 rendstatus |= PDRAW_INTERLACE; // interlace mode
\r
1366 DrawAllSpritesLoPri =
\r
1367 DrawAllSpritesHiPri = DrawAllSpritesInterlace;
\r
1371 DrawAllSpritesLoPri = DrawAllSprites;
\r
1372 DrawAllSpritesHiPri = DrawSpritesSHi;
\r
1376 DrawAllSpritesLoPri =
\r
1377 DrawAllSpritesHiPri = DrawAllSprites;
\r
1379 if (rendstatus & PDRAW_ACC_SPRITES)
\r
1380 DrawAllSpritesHiPri = DrawSpritesHiAS;
\r
1382 if (Pico.m.dirtyPal) Pico.m.dirtyPal = 2; // reset dirty if needed
\r
1385 PrepareSprites(1);
\r
1389 static void PicoLine(void)
\r
1392 if (skip_next_line>0) { skip_next_line--; return; } // skip rendering lines
\r
1394 sh=(Pico.video.reg[0xC]&8)>>3; // shadow/hilight?
\r
1395 if (rendstatus & PDRAW_ACC_SPRITES) as|=1; // accurate sprites
\r
1397 if (PicoScanBegin != NULL)
\r
1398 skip_next_line = PicoScanBegin(DrawScanline);
\r
1401 BackFill(Pico.video.reg[7], sh|as);
\r
1402 if (Pico.video.reg[1]&0x40)
\r
1403 DrawDisplay(sh, as);
\r
1405 if (FinalizeLine != NULL)
\r
1408 if (PicoScanEnd != NULL)
\r
1409 PicoScanEnd(DrawScanline);
\r
1412 void PicoDrawSync(int to, int blank_last_line)
\r
1414 for (; DrawScanline < to; DrawScanline++)
\r
1416 #if !CAN_HANDLE_240_LINES
\r
1417 if (DrawScanline >= 224) break;
\r
1422 #if !CAN_HANDLE_240_LINES
\r
1423 if (DrawScanline >= 224) DrawScanline = 240, return;
\r
1427 if (DrawScanline <= to)
\r
1429 if (blank_last_line)
\r
1430 DrawBlankedLine();
\r
1436 void PicoDrawSetColorFormat(int which)
\r
1440 case 2: FinalizeLine = FinalizeLine8bit; break;
\r
1441 case 1: FinalizeLine = FinalizeLineRGB555; break;
\r
1442 case 0: FinalizeLine = FinalizeLineBGR444; break;
\r
1443 default:FinalizeLine = NULL; break;
\r
1445 #if OVERRIDE_HIGHCOL
\r
1446 if (which) HighCol=DefHighCol;
\r