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 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 #include "PicoInt.h"
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12 int (*PicoScan)(unsigned int num, void *data)=NULL;
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14 #if OVERRIDE_HIGHCOL
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15 static unsigned char DefHighCol[8+320+8];
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16 unsigned char *HighCol=DefHighCol;
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18 unsigned char HighCol[8+320+8];
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20 unsigned short DefOutBuff[320*2];
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21 void *DrawLineDest=DefOutBuff; // pointer to dest buffer where to draw this line to
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23 static int HighCacheA[41+1]; // caches for high layers
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24 static int HighCacheB[41+1];
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25 static int HighCacheS[80+1]; // and sprites
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26 static int HighPreSpr[80*2+1]; // slightly preprocessed sprites
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27 char HighSprZ[320+8+8]; // Z-buffer for accurate sprites and shadow/hilight mode
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28 // (if bit 7 == 0, sh caused by tile; if bit 6 == 0 pixel must be shadowed, else hilighted, if bit5 == 1)
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29 // lsb->msb: moved sprites, not all window tiles use same priority, accurate sprites (copied from PicoOpt), interlace
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30 // dirty sprites, sonic mode, have layer with all hi prio tiles (mk3), layer sh/hi already processed
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32 int Scanline=0; // Scanline
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34 static int SpriteBlocks;
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35 //unsigned short ppt[] = { 0x0f11, 0x0ff1, 0x01f1, 0x011f, 0x01ff, 0x0f1f, 0x0f0e, 0x0e7c };
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39 int nametab; // Position in VRAM of name table (for this tile line)
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40 int line; // Line number in pixels 0x000-0x3ff within the virtual tilemap
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41 int hscroll; // Horizontal scroll value in pixels for the line
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42 int xmask; // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap
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43 int *hc; // cache for high tile codes and their positions
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44 int cells; // cells (tiles) to draw (32 col mode doesn't need to update whole 320)
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47 // stuff available in asm:
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49 void DrawWindow(int tstart, int tend, int prio, int sh);
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50 void BackFill(int reg7, int sh);
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51 void DrawSprite(int *sprite, int **hc, int sh);
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52 void DrawTilesFromCache(int *hc, int sh, int rlim);
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53 void DrawSpritesFromCache(int *hc, int sh);
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54 void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells);
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55 void FinalizeLineBGR444(int sh);
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56 void FinalizeLineRGB555(int sh);
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57 void blockcpy_or(void *dst, void *src, size_t n, int pat);
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60 void blockcpy_or(void *dst, void *src, size_t n, int pat)
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62 unsigned char *pd = dst, *ps = src;
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64 *pd++ = (unsigned char) (*ps++ | pat);
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69 static int TileNorm(int sx,int addr,int pal)
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71 unsigned char *pd = HighCol+sx;
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72 unsigned int pack=0; unsigned int t=0;
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74 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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77 t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));
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78 t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));
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79 t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));
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80 t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t ));
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81 t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));
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82 t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));
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83 t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));
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84 t=pack&0x000f0000; if (t) pd[7]=(unsigned char)(pal|(t>>16));
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88 return 1; // Tile blank
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91 static int TileFlip(int sx,int addr,int pal)
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93 unsigned char *pd = HighCol+sx;
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94 unsigned int pack=0; unsigned int t=0;
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96 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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99 t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));
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100 t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));
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101 t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));
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102 t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));
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103 t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t ));
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104 t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));
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105 t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8));
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106 t=pack&0x0000f000; if (t) pd[7]=(unsigned char)(pal|(t>>12));
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109 return 1; // Tile blank
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113 // tile renderers for hacky operator sprite support
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114 #define sh_pix(x) \
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116 else if(t==0xe) pd[x]=(unsigned char)((pd[x]&0x3f)|0x80); /* hilight */ \
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117 else if(t==0xf) pd[x]=(unsigned char)((pd[x]&0x3f)|0xc0); /* shadow */ \
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118 else pd[x]=(unsigned char)(pal|t)
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120 #ifndef _ASM_DRAW_C
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121 static int TileNormSH(int sx,int addr,int pal)
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123 unsigned int pack=0; unsigned int t=0;
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124 unsigned char *pd = HighCol+sx;
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126 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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129 t=(pack&0x0000f000)>>12; sh_pix(0);
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130 t=(pack&0x00000f00)>> 8; sh_pix(1);
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131 t=(pack&0x000000f0)>> 4; sh_pix(2);
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132 t=(pack&0x0000000f) ; sh_pix(3);
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133 t=(pack&0xf0000000)>>28; sh_pix(4);
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134 t=(pack&0x0f000000)>>24; sh_pix(5);
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135 t=(pack&0x00f00000)>>20; sh_pix(6);
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136 t=(pack&0x000f0000)>>16; sh_pix(7);
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140 return 1; // Tile blank
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143 static int TileFlipSH(int sx,int addr,int pal)
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145 unsigned int pack=0; unsigned int t=0;
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146 unsigned char *pd = HighCol+sx;
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148 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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151 t=(pack&0x000f0000)>>16; sh_pix(0);
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152 t=(pack&0x00f00000)>>20; sh_pix(1);
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153 t=(pack&0x0f000000)>>24; sh_pix(2);
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154 t=(pack&0xf0000000)>>28; sh_pix(3);
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155 t=(pack&0x0000000f) ; sh_pix(4);
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156 t=(pack&0x000000f0)>> 4; sh_pix(5);
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157 t=(pack&0x00000f00)>> 8; sh_pix(6);
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158 t=(pack&0x0000f000)>>12; sh_pix(7);
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161 return 1; // Tile blank
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165 static int TileNormZ(int sx,int addr,int pal,int zval)
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167 unsigned int pack=0; unsigned int t=0;
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168 unsigned char *pd = HighCol+sx;
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169 char *zb = HighSprZ+sx;
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170 int collision = 0, zb_s;
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172 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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175 t=pack&0x0000f000; if(t) { zb_s=zb[0]; if(zb_s) collision=1; if(zval>zb_s) { pd[0]=(unsigned char)(pal|(t>>12)); zb[0]=(char)zval; } }
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176 t=pack&0x00000f00; if(t) { zb_s=zb[1]; if(zb_s) collision=1; if(zval>zb_s) { pd[1]=(unsigned char)(pal|(t>> 8)); zb[1]=(char)zval; } }
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177 t=pack&0x000000f0; if(t) { zb_s=zb[2]; if(zb_s) collision=1; if(zval>zb_s) { pd[2]=(unsigned char)(pal|(t>> 4)); zb[2]=(char)zval; } }
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178 t=pack&0x0000000f; if(t) { zb_s=zb[3]; if(zb_s) collision=1; if(zval>zb_s) { pd[3]=(unsigned char)(pal|(t )); zb[3]=(char)zval; } }
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179 t=pack&0xf0000000; if(t) { zb_s=zb[4]; if(zb_s) collision=1; if(zval>zb_s) { pd[4]=(unsigned char)(pal|(t>>28)); zb[4]=(char)zval; } }
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180 t=pack&0x0f000000; if(t) { zb_s=zb[5]; if(zb_s) collision=1; if(zval>zb_s) { pd[5]=(unsigned char)(pal|(t>>24)); zb[5]=(char)zval; } }
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181 t=pack&0x00f00000; if(t) { zb_s=zb[6]; if(zb_s) collision=1; if(zval>zb_s) { pd[6]=(unsigned char)(pal|(t>>20)); zb[6]=(char)zval; } }
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182 t=pack&0x000f0000; if(t) { zb_s=zb[7]; if(zb_s) collision=1; if(zval>zb_s) { pd[7]=(unsigned char)(pal|(t>>16)); zb[7]=(char)zval; } }
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183 if(collision) Pico.video.status|=0x20;
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187 return 1; // Tile blank
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190 static int TileFlipZ(int sx,int addr,int pal,int zval)
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192 unsigned int pack=0; unsigned int t=0;
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193 unsigned char *pd = HighCol+sx;
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194 char *zb = HighSprZ+sx;
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195 int collision = 0, zb_s;
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197 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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200 t=pack&0x000f0000; if(t) { zb_s=zb[0]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[0]=(unsigned char)(pal|(t>>16)); zb[0]=(char)zval; } }
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201 t=pack&0x00f00000; if(t) { zb_s=zb[1]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[1]=(unsigned char)(pal|(t>>20)); zb[1]=(char)zval; } }
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202 t=pack&0x0f000000; if(t) { zb_s=zb[2]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[2]=(unsigned char)(pal|(t>>24)); zb[2]=(char)zval; } }
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203 t=pack&0xf0000000; if(t) { zb_s=zb[3]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[3]=(unsigned char)(pal|(t>>28)); zb[3]=(char)zval; } }
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204 t=pack&0x0000000f; if(t) { zb_s=zb[4]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[4]=(unsigned char)(pal|(t )); zb[4]=(char)zval; } }
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205 t=pack&0x000000f0; if(t) { zb_s=zb[5]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[5]=(unsigned char)(pal|(t>> 4)); zb[5]=(char)zval; } }
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206 t=pack&0x00000f00; if(t) { zb_s=zb[6]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[6]=(unsigned char)(pal|(t>> 8)); zb[6]=(char)zval; } }
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207 t=pack&0x0000f000; if(t) { zb_s=zb[7]&0x1f; if(zb_s) collision=1; if(zval>zb_s) { pd[7]=(unsigned char)(pal|(t>>12)); zb[7]=(char)zval; } }
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208 if(collision) Pico.video.status|=0x20;
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211 return 1; // Tile blank
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215 #define sh_pixZ(x) \
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217 if(zb[x]) collision=1; \
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219 if (t==0xe) { pd[x]=(unsigned char)((pd[x]&0x3f)|0x80); /* hilight */ } \
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220 else if(t==0xf) { pd[x]=(unsigned char)((pd[x]&0x3f)|0xc0); /* shadow */ } \
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221 else { zb[x]=(char)zval; pd[x]=(unsigned char)(pal|t); } \
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225 static int TileNormZSH(int sx,int addr,int pal,int zval)
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227 unsigned int pack=0; unsigned int t=0;
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228 unsigned char *pd = HighCol+sx;
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229 char *zb = HighSprZ+sx;
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232 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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235 t=(pack&0x0000f000)>>12; sh_pixZ(0);
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236 t=(pack&0x00000f00)>> 8; sh_pixZ(1);
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237 t=(pack&0x000000f0)>> 4; sh_pixZ(2);
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238 t=(pack&0x0000000f) ; sh_pixZ(3);
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239 t=(pack&0xf0000000)>>28; sh_pixZ(4);
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240 t=(pack&0x0f000000)>>24; sh_pixZ(5);
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241 t=(pack&0x00f00000)>>20; sh_pixZ(6);
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242 t=(pack&0x000f0000)>>16; sh_pixZ(7);
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243 if(collision) Pico.video.status|=0x20;
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247 return 1; // Tile blank
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250 static int TileFlipZSH(int sx,int addr,int pal,int zval)
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252 unsigned int pack=0; unsigned int t=0;
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253 unsigned char *pd = HighCol+sx;
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254 char *zb = HighSprZ+sx;
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257 pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
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260 t=(pack&0x000f0000)>>16; sh_pixZ(0);
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261 t=(pack&0x00f00000)>>20; sh_pixZ(1);
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262 t=(pack&0x0f000000)>>24; sh_pixZ(2);
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263 t=(pack&0xf0000000)>>28; sh_pixZ(3);
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264 t=(pack&0x0000000f) ; sh_pixZ(4);
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265 t=(pack&0x000000f0)>> 4; sh_pixZ(5);
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266 t=(pack&0x00000f00)>> 8; sh_pixZ(6);
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267 t=(pack&0x0000f000)>>12; sh_pixZ(7);
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268 if(collision) Pico.video.status|=0x20;
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271 return 1; // Tile blank
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274 // --------------------------------------------
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276 #ifndef _ASM_DRAW_C
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277 static void DrawStrip(struct TileStrip *ts, int plane_sh, int cellskip)
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279 int tilex,dx,ty,code=0,addr=0,cells;
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280 int oldcode=-1,blank=-1; // The tile we know is blank
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283 // Draw tiles across screen:
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284 sh=(plane_sh<<5)&0x40;
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285 tilex=((-ts->hscroll)>>3)+cellskip;
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286 ty=(ts->line&7)<<1; // Y-Offset into tile
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287 dx=((ts->hscroll-1)&7)+1;
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288 cells = ts->cells - cellskip;
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289 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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292 for (; cells > 0; dx+=8,tilex++,cells--)
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296 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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297 if (code==blank) continue;
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298 if (code>>15) { // high priority tile
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299 int cval = code | (dx<<16) | (ty<<25);
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300 if(code&0x1000) cval^=7<<26;
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301 *ts->hc++ = cval; // cache it
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305 if (code!=oldcode) {
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307 // Get tile address/2:
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308 addr=(code&0x7ff)<<4;
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310 if (code&0x1000) addr^=0xe; // Y-flip
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312 pal=((code>>9)&0x30)|sh;
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315 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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316 else zero=TileNorm(dx,addr,pal);
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318 if (zero) blank=code; // We know this tile is blank now
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321 // terminate the cache list
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323 // if oldcode wasn't changed, it means all layer is hi priority
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324 if (oldcode == -1) rendstatus|=0x40;
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328 void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
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330 int tilex,dx,code=0,addr=0,cell=0;
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331 int oldcode=-1,blank=-1; // The tile we know is blank
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332 int pal=0,scan=Scanline;
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334 // Draw tiles across screen:
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335 tilex=(-ts->hscroll)>>3;
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336 dx=((ts->hscroll-1)&7)+1;
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337 if(dx != 8) cell--; // have hscroll, start with negative cell
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342 for (; cell < ts->cells; dx+=8,tilex++,cell++)
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344 int zero=0,nametabadd,ty;
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349 vscroll=Pico.vsram[(plane_sh&1)+(cell&~1)];
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351 // Find the line in the name table
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352 line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..
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353 nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width]
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354 ty=(line&7)<<1; // Y-Offset into tile
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357 code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];
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358 if (code==blank) continue;
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359 if (code>>15) { // high priority tile
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360 int cval = code | (dx<<16) | (ty<<25);
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361 if(code&0x1000) cval^=7<<26;
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362 *ts->hc++ = cval; // cache it
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366 if (code!=oldcode) {
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368 // Get tile address/2:
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369 addr=(code&0x7ff)<<4;
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370 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
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372 pal=((code>>9)&0x30)|((plane_sh<<5)&0x40);
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375 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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376 else zero=TileNorm(dx,addr,pal);
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378 if (zero) blank=code; // We know this tile is blank now
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381 // terminate the cache list
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383 if (oldcode == -1) rendstatus|=0x40;
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387 #ifndef _ASM_DRAW_C
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390 void DrawStripInterlace(struct TileStrip *ts)
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392 int tilex=0,dx=0,ty=0,code=0,addr=0,cells;
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393 int oldcode=-1,blank=-1; // The tile we know is blank
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396 // Draw tiles across screen:
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397 tilex=(-ts->hscroll)>>3;
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398 ty=(ts->line&15)<<1; // Y-Offset into tile
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399 dx=((ts->hscroll-1)&7)+1;
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401 if(dx != 8) cells++; // have hscroll, need to draw 1 cell more
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403 for (; cells; dx+=8,tilex++,cells--)
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407 code=Pico.vram[ts->nametab+(tilex&ts->xmask)];
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408 if (code==blank) continue;
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409 if (code>>15) { // high priority tile
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410 int cval = (code&0xfc00) | (dx<<16) | (ty<<25);
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411 cval|=(code&0x3ff)<<1;
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412 if(code&0x1000) cval^=0xf<<26;
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413 *ts->hc++ = cval; // cache it
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417 if (code!=oldcode) {
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419 // Get tile address/2:
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420 addr=(code&0x7ff)<<5;
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421 if (code&0x1000) addr+=30-ty; else addr+=ty; // Y-flip
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423 // pal=Pico.cram+((code>>9)&0x30);
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424 pal=((code>>9)&0x30);
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427 if (code&0x0800) zero=TileFlip(dx,addr,pal);
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428 else zero=TileNorm(dx,addr,pal);
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430 if (zero) blank=code; // We know this tile is blank now
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433 // terminate the cache list
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437 // --------------------------------------------
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439 #ifndef _ASM_DRAW_C
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440 static void DrawLayer(int plane_sh, int *hcache, int cellskip, int maxcells)
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442 struct PicoVideo *pvid=&Pico.video;
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443 const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid)
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444 struct TileStrip ts;
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445 int width, height, ymask;
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451 // Work out the TileStrip to draw
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453 // Work out the name table size: 32 64 or 128 tiles (0-3)
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454 width=pvid->reg[16];
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455 height=(width>>4)&3; width&=3;
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457 ts.xmask=(1<<shift[width])-1; // X Mask in tiles (0x1f-0x7f)
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458 ymask=(height<<8)|0xff; // Y Mask in pixels
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459 if(width == 1) ymask&=0x1ff;
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460 else if(width>1) ymask =0x0ff;
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462 // Find name table:
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463 if (plane_sh&1) ts.nametab=(pvid->reg[4]&0x07)<<12; // B
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464 else ts.nametab=(pvid->reg[2]&0x38)<< 9; // A
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466 htab=pvid->reg[13]<<9; // Horizontal scroll table address
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467 if ( pvid->reg[11]&2) htab+=Scanline<<1; // Offset by line
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468 if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile
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469 htab+=plane_sh&1; // A or B
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471 // Get horizontal scroll value, will be masked later
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472 ts.hscroll=Pico.vram[htab&0x7fff];
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474 if((pvid->reg[12]&6) == 6) {
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475 // interlace mode 2
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476 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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478 // Find the line in the name table
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479 ts.line=(vscroll+(Scanline<<1))&((ymask<<1)|1);
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480 ts.nametab+=(ts.line>>4)<<shift[width];
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482 DrawStripInterlace(&ts);
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483 } else if( pvid->reg[11]&4) {
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484 // shit, we have 2-cell column based vscroll
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485 // luckily this doesn't happen too often
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486 ts.line=ymask|(shift[width]<<24); // save some stuff instead of line
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487 DrawStripVSRam(&ts, plane_sh, cellskip);
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489 vscroll=Pico.vsram[plane_sh&1]; // Get vertical scroll value
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491 // Find the line in the name table
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492 ts.line=(vscroll+Scanline)&ymask;
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493 ts.nametab+=(ts.line>>3)<<shift[width];
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495 DrawStrip(&ts, plane_sh, cellskip);
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500 // --------------------------------------------
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502 // tstart & tend are tile pair numbers
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503 static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
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505 struct PicoVideo *pvid=&Pico.video;
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506 int tilex=0,ty=0,nametab,code=0;
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507 int blank=-1; // The tile we know is blank
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509 // Find name table line:
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510 if (pvid->reg[12]&1)
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512 nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode
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513 nametab+=(Scanline>>3)<<6;
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517 nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode
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518 nametab+=(Scanline>>3)<<5;
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524 ty=(Scanline&7)<<1; // Y-Offset into tile
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526 if(!(rendstatus&2)) {
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527 // check the first tile code
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528 code=Pico.vram[nametab+tilex];
\r
529 // if the whole window uses same priority (what is often the case), we may be able to skip this field
\r
530 if((code>>15) != prio) return;
\r
533 // Draw tiles across screen:
\r
534 for (; tilex < tend; tilex++)
\r
539 code=Pico.vram[nametab+tilex];
\r
540 if(code==blank) continue;
\r
541 if((code>>15) != prio) {
\r
546 pal=((code>>9)&0x30);
\r
549 int tmp, *zb = (int *)(HighCol+8+(tilex<<3));
\r
552 if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;
\r
553 if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;
\r
554 *zb++=tmp; tmp = *zb;
\r
555 if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;
\r
556 if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;
\r
563 // Get tile address/2:
\r
564 addr=(code&0x7ff)<<4;
\r
565 if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip
\r
567 if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);
\r
568 else zero=TileNorm(8+(tilex<<3),addr,pal);
\r
570 if (zero) blank=code; // We know this tile is blank now
\r
573 // terminate the cache list
\r
577 // --------------------------------------------
\r
579 static void DrawTilesFromCache(int *hc, int sh, int rlim)
\r
581 int code, addr, dx;
\r
584 // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it
\r
586 if (sh && (rendstatus&0xc0))
\r
588 if (!(rendstatus&0x80))
\r
590 // as some layer has covered whole line with hi priority tiles,
\r
591 // we can process whole line and then act as if sh/hi mode was off.
\r
593 int c = 320/4, *zb = (int *)(HighCol+8);
\r
597 if (!(tmp & 0x80808080)) *zb=tmp&0x3f3f3f3f;
\r
599 if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;
\r
600 if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;
\r
611 while ((code=*hc++)) {
\r
613 // Get tile address/2:
\r
614 addr=(code&0x7ff)<<4;
\r
615 addr+=(unsigned int)code>>25; // y offset into tile
\r
616 dx=(code>>16)&0x1ff;
\r
618 if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
\r
619 if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
\r
620 if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
\r
621 if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;
\r
623 pal=((code>>9)&0x30);
\r
624 if (rlim-dx < 0) goto last_cut_tile;
\r
626 if (code&0x0800) TileFlip(dx,addr,pal);
\r
627 else TileNorm(dx,addr,pal);
\r
632 short blank=-1; // The tile we know is blank
\r
633 while ((code=*hc++)) {
\r
635 if((short)code == blank) continue;
\r
636 // Get tile address/2:
\r
637 addr=(code&0x7ff)<<4;
\r
638 addr+=(unsigned int)code>>25; // y offset into tile
\r
639 dx=(code>>16)&0x1ff;
\r
641 pal=((code>>9)&0x30);
\r
642 if (rlim-dx < 0) goto last_cut_tile;
\r
644 if (code&0x0800) zero=TileFlip(dx,addr,pal);
\r
645 else zero=TileNorm(dx,addr,pal);
\r
647 if (zero) blank=(short)code;
\r
654 unsigned int t, pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels
\r
655 unsigned char *pd = HighCol+dx;
\r
661 case 7: t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8)); // "break" is left out intentionally
\r
662 case 6: t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));
\r
663 case 5: t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t ));
\r
664 case 4: t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));
\r
665 case 3: t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));
\r
666 case 2: t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));
\r
667 case 1: t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));
\r
675 case 7: t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));
\r
676 case 6: t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));
\r
677 case 5: t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));
\r
678 case 4: t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t ));
\r
679 case 3: t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));
\r
680 case 2: t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));
\r
681 case 1: t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));
\r
688 // --------------------------------------------
\r
690 // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size
\r
691 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
693 static void DrawSprite(int *sprite, int **hc, int sh)
\r
695 int width=0,height=0;
\r
698 int tile=0,delta=0;
\r
700 int (*fTileFunc)(int sx,int addr,int pal);
\r
702 // parse the sprite data
\r
707 height=(sy>>24)&7; // Width and height in tiles
\r
708 sy=(sy<<16)>>16; // Y
\r
710 row=Scanline-sy; // Row of the sprite we are on
\r
712 if (code&0x1000) row=(height<<3)-1-row; // Flip Y
\r
714 tile=code&0x7ff; // Tile number
\r
715 tile+=row>>3; // Tile number increases going down
\r
716 delta=height; // Delta to increase tile by going right
\r
717 if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
719 tile<<=4; tile+=(row&7)<<1; // Tile address
\r
721 if(code&0x8000) { // high priority - cache it
\r
722 *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>16)&0xf);
\r
724 delta<<=4; // Delta of address
\r
725 pal=((code>>9)&0x30)|(sh<<6);
\r
727 if(sh && (code&0x6000) == 0x6000) {
\r
728 if(code&0x0800) fTileFunc=TileFlipSH;
\r
729 else fTileFunc=TileNormSH;
\r
731 if(code&0x0800) fTileFunc=TileFlip;
\r
732 else fTileFunc=TileNorm;
\r
735 for (; width; width--,sx+=8,tile+=delta)
\r
737 if(sx<=0) continue;
\r
738 if(sx>=328) break; // Offscreen
\r
740 tile&=0x7fff; // Clip tile address
\r
741 fTileFunc(sx,tile,pal);
\r
748 // Index + 0 : hhhhvvvv s---hhvv yyyyyyyy yyyyyyyy // s: skip flag, h: horiz. size
\r
749 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
751 static void DrawSpriteZ(int pack, int pack2, int shpri, int sprio)
\r
753 int width=0,height=0;
\r
756 int tile=0,delta=0;
\r
758 int (*fTileFunc)(int sx,int addr,int pal,int zval);
\r
760 // parse the sprite data
\r
762 sy=(pack <<16)>>16; // Y
\r
764 height=(pack>>24)&7; // Width and height in tiles
\r
766 row=Scanline-sy; // Row of the sprite we are on
\r
768 if (pack2&0x1000) row=(height<<3)-1-row; // Flip Y
\r
770 tile=pack2&0x7ff; // Tile number
\r
771 tile+=row>>3; // Tile number increases going down
\r
772 delta=height; // Delta to increase tile by going right
\r
773 if (pack2&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X
\r
775 tile<<=4; tile+=(row&7)<<1; // Tile address
\r
776 delta<<=4; // Delta of address
\r
777 pal=((pack2>>9)&0x30);
\r
778 if((shpri&1)&&!(shpri&2)) pal|=0x40;
\r
781 if((pack2&0x6000) != 0x6000) shpri = 0;
\r
782 shpri |= (pack2&0x0800)>>10;
\r
785 case 0: fTileFunc=TileNormZ; break;
\r
786 case 1: fTileFunc=TileNormZSH; break;
\r
787 case 2: fTileFunc=TileFlipZ; break;
\r
788 case 3: fTileFunc=TileFlipZSH; break;
\r
791 for (; width; width--,sx+=8,tile+=delta)
\r
793 if(sx<=0) continue;
\r
794 if(sx>=328) break; // Offscreen
\r
796 tile&=0x7fff; // Clip tile address
\r
797 fTileFunc(sx,tile,pal,sprio);
\r
801 static void DrawSpriteInterlace(unsigned int *sprite)
\r
803 int width=0,height=0;
\r
806 int tile=0,delta=0;
\r
809 // parse the sprite data
\r
812 sy=(sy&0x3ff)-0x100; // Y
\r
813 width=(height>>2)&3; height&=3;
\r
814 width++; height++; // Width and height in tiles
\r
816 row=(Scanline<<1)-sy; // Row of the sprite we are on
\r
819 sx=((code>>16)&0x1ff)-0x78; // X
\r
821 if (code&0x1000) row^=(16<<height)-1; // Flip Y
\r
823 tile=code&0x3ff; // Tile number
\r
824 tile+=row>>4; // 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<<=5; tile+=(row&15)<<1; // Tile address
\r
830 delta<<=5; // Delta of address
\r
831 pal=((code>>9)&0x30); // Get palette pointer
\r
833 for (; width; width--,sx+=8,tile+=delta)
\r
835 if(sx<=0) continue;
\r
836 if(sx>=328) break; // Offscreen
\r
838 tile&=0x7fff; // Clip tile address
\r
839 if (code&0x0800) TileFlip(sx,tile,pal);
\r
840 else TileNorm(sx,tile,pal);
\r
845 static void DrawAllSpritesInterlace(int pri, int maxwidth)
\r
847 struct PicoVideo *pvid=&Pico.video;
\r
848 int i,u,table,link=0,sline=Scanline<<1;
\r
849 unsigned int *sprites[80]; // Sprite index
\r
851 table=pvid->reg[5]&0x7f;
\r
852 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
853 table<<=8; // Get sprite table address/2
\r
855 for (i=u=0; u < 80 && i < 21; u++)
\r
857 unsigned int *sprite;
\r
858 int code, sx, sy, height;
\r
860 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
865 if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite
\r
867 // check if it is on this line
\r
868 sy = (code&0x3ff)-0x100;
\r
869 height = (((code>>24)&3)+1)<<4;
\r
870 if(sline < sy || sline >= sy+height) goto nextsprite; // no
\r
872 // check if sprite is not hidden offscreen
\r
873 sx = (sx>>16)&0x1ff;
\r
874 sx -= 0x78; // Get X coordinate + 8
\r
875 if(sx <= -8*3 || sx >= maxwidth) goto nextsprite;
\r
877 // sprite is good, save it's pointer
\r
878 sprites[i++]=sprite;
\r
881 // Find next sprite
\r
882 link=(code>>16)&0x7f;
\r
883 if(!link) break; // End of sprites
\r
886 // Go through sprites backwards:
\r
887 for (i-- ;i>=0; i--)
\r
888 DrawSpriteInterlace(sprites[i]);
\r
892 #ifndef _ASM_DRAW_C
\r
893 static void DrawSpritesFromCache(int *hc, int sh)
\r
895 int code, tile, sx, delta, width;
\r
897 int (*fTileFunc)(int sx,int addr,int pal);
\r
899 // *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>24)&0xf);
\r
901 while((code=*hc++)) {
\r
904 width=delta>>2; delta&=3;
\r
905 width++; delta++; // Width and height in tiles
\r
906 if (code&0x10000) delta=-delta; // Flip X
\r
908 tile=((unsigned int)code>>17)<<1;
\r
909 sx=(code<<16)>>22; // sx can be negative (start offscreen), so sign extend
\r
911 if(sh && pal == 0x30) { //
\r
912 if(code&0x10000) fTileFunc=TileFlipSH;
\r
913 else fTileFunc=TileNormSH;
\r
915 if(code&0x10000) fTileFunc=TileFlip;
\r
916 else fTileFunc=TileNorm;
\r
919 for (; width; width--,sx+=8,tile+=delta)
\r
921 if(sx<=0) continue;
\r
922 if(sx>=328) break; // Offscreen
\r
924 tile&=0x7fff; // Clip tile address
\r
925 fTileFunc(sx,tile,pal);
\r
932 // Index + 0 : ----hhvv -lllllll -------y yyyyyyyy
\r
933 // Index + 4 : -------x xxxxxxxx pccvhnnn nnnnnnnn
\r
935 // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size
\r
936 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
938 static void PrepareSprites(int full)
\r
940 struct PicoVideo *pvid=&Pico.video;
\r
941 int u=0,link=0,sblocks=0;
\r
943 int *pd = HighPreSpr;
\r
945 table=pvid->reg[5]&0x7f;
\r
946 if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode
\r
947 table<<=8; // Get sprite table address/2
\r
952 // updates: tilecode, sx
\r
953 for (u=0; u < 80 && (pack = *pd); u++, pd+=2)
\r
955 unsigned int *sprite;
\r
956 int code, code2, sx, sy, skip=0;
\r
958 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
960 // parse sprite info
\r
963 code2 &= ~0xfe000000;
\r
964 code2 -= 0x00780000; // Get X coordinate + 8 in upper 16 bits
\r
967 if((sx <= 8-((pack>>28)<<3) && sx >= -0x76) || sx >= 328) skip=1<<23;
\r
968 else if ((sy = (pack<<16)>>16) < 240 && sy > -32) {
\r
969 int sbl = (2<<(pack>>28))-1;
\r
970 sblocks |= sbl<<(sy>>3);
\r
973 *pd = (pack&~(1<<23))|skip;
\r
976 // Find next sprite
\r
977 link=(code>>16)&0x7f;
\r
978 if(!link) break; // End of sprites
\r
980 SpriteBlocks |= sblocks;
\r
984 for (; u < 80; u++)
\r
986 unsigned int *sprite;
\r
987 int code, code2, sx, sy, hv, height, width, skip=0, sx_min;
\r
989 sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite
\r
991 // parse sprite info
\r
993 sy = (code&0x1ff)-0x80;
\r
994 hv = (code>>24)&0xf;
\r
997 if(sy > 240 || sy + (height<<3) <= 0) skip|=1<<22;
\r
1000 code2 = sprite[1];
\r
1001 sx = (code2>>16)&0x1ff;
\r
1002 sx -= 0x78; // Get X coordinate + 8
\r
1003 sx_min = 8-(width<<3);
\r
1005 if((sx <= sx_min && sx >= -0x76) || sx >= 328) skip|=1<<23;
\r
1006 else if (sx > sx_min && !skip) {
\r
1007 int sbl = (2<<height)-1;
\r
1009 if(shi < 0) shi=0; // negative sy
\r
1010 sblocks |= sbl<<shi;
\r
1013 *pd++ = (width<<28)|(height<<24)|skip|(hv<<16)|((unsigned short)sy);
\r
1014 *pd++ = (sx<<16)|((unsigned short)code2);
\r
1016 // Find next sprite
\r
1017 link=(code>>16)&0x7f;
\r
1018 if(!link) break; // End of sprites
\r
1020 SpriteBlocks = sblocks;
\r
1021 *pd = 0; // terminate
\r
1025 static void DrawAllSprites(int *hcache, int maxwidth, int prio, int sh)
\r
1028 int sx1seen=0; // sprite with x coord 1 or 0 seen
\r
1029 int ntiles = 0; // tile counter for sprite limit emulation
\r
1030 int *sprites[40]; // Sprites to draw in fast mode
\r
1031 int *ps, pack, rs = rendstatus, scan=Scanline;
\r
1034 DrawAllSpritesInterlace(prio, maxwidth);
\r
1038 //dprintf("PrepareSprites(%i) [%i]", (rs>>4)&1, scan);
\r
1039 PrepareSprites(rs&0x10);
\r
1040 rendstatus=rs&~0x11;
\r
1042 if (!(SpriteBlocks & (1<<(scan>>3)))) return;
\r
1044 if(((rs&4)||sh)&&prio==0)
\r
1045 memset(HighSprZ, 0, 328);
\r
1046 if(!(rs&4)&&prio) {
\r
1047 if(hcache[0]) DrawSpritesFromCache(hcache, sh);
\r
1053 // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size
\r
1054 // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8
\r
1056 for(i=u=n=0; (pack = *ps) && n < 20; ps+=2, u++)
\r
1058 int sx, sy, row, pack2;
\r
1060 if(pack & 0x00400000) continue;
\r
1062 // get sprite info
\r
1065 sy = (pack <<16)>>16;
\r
1068 //dprintf("x: %i y: %i %ix%i", sx, sy, (pack>>28)<<3, (pack>>21)&0x38);
\r
1070 if(sx == -0x77) sx1seen|=1; // for masking mode 2
\r
1072 // check if it is on this line
\r
1073 if(row < 0 || row >= ((pack>>21)&0x38)) continue; // no
\r
1074 n++; // number of sprites on this line (both visible and hidden, max is 20) [broken]
\r
1077 ntiles += pack>>28;
\r
1078 if(ntiles > 40) break;
\r
1080 if(pack & 0x00800000) continue;
\r
1082 // masking sprite?
\r
1084 if(!(sx1seen&1) || sx1seen==3) {
\r
1085 break; // this sprite is not drawn and remaining sprites are masked
\r
1087 if((sx1seen>>8) == 0) sx1seen=(i+1)<<8;
\r
1090 else if(sx == -0x77) {
\r
1091 // masking mode2 (Outrun, Galaxy Force II, Shadow of the beast)
\r
1092 if(sx1seen>>8) { i=(sx1seen>>8)-1; break; } // seen both 0 and 1
\r
1097 // accurate sprites
\r
1098 //dprintf("P:%i",((sx>>15)&1));
\r
1100 // might need to skip this sprite
\r
1101 if((pack2&0x8000) ^ (prio<<15)) continue;
\r
1102 DrawSpriteZ(pack,pack2,sh|(prio<<1),(char)(0x1f-n));
\r
1106 // sprite is good, save it's pointer
\r
1110 // Go through sprites backwards:
\r
1112 for (i--; i>=0; i--)
\r
1113 DrawSprite(sprites[i],&hcache,sh);
\r
1115 // terminate cache list
\r
1121 // --------------------------------------------
\r
1123 #ifndef _ASM_DRAW_C
\r
1124 static void BackFill(int reg7, int sh)
\r
1126 unsigned int back=0;
\r
1127 unsigned int *pd=NULL,*end=NULL;
\r
1129 // Start with a blank scanline (background colour):
\r
1135 pd= (unsigned int *)(HighCol+8);
\r
1136 end=(unsigned int *)(HighCol+8+320);
\r
1138 do { pd[0]=pd[1]=pd[2]=pd[3]=back; pd+=4; } while (pd<end);
\r
1142 // --------------------------------------------
\r
1144 unsigned short HighPal[0x100];
\r
1146 #ifndef _ASM_DRAW_C
\r
1147 static void FinalizeLineBGR444(int sh)
\r
1149 unsigned short *pd=DrawLineDest;
\r
1150 unsigned char *ps=HighCol+8;
\r
1151 unsigned short *pal=Pico.cram;
\r
1154 if (Pico.video.reg[12]&1) {
\r
1157 if(!(PicoOpt&0x100)) pd+=32;
\r
1163 if(Pico.m.dirtyPal) {
\r
1164 blockcpy(pal, Pico.cram, 0x40*2);
\r
1165 // shadowed pixels
\r
1166 for(i = 0x3f; i >= 0; i--)
\r
1167 pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x0777);
\r
1168 // hilighted pixels
\r
1169 for(i = 0x3f; i >= 0; i--) {
\r
1170 t=pal[i]&0xeee;t+=0x444;if(t&0x10)t|=0xe;if(t&0x100)t|=0xe0;if(t&0x1000)t|=0xe00;t&=0xeee;
\r
1171 pal[0x80|i]=(unsigned short)t;
\r
1173 Pico.m.dirtyPal = 0;
\r
1177 for(i = 0; i < len; i++)
\r
1178 pd[i] = pal[ps[i]];
\r
1182 static void FinalizeLineRGB555(int sh)
\r
1184 unsigned short *pd=DrawLineDest;
\r
1185 unsigned char *ps=HighCol+8;
\r
1186 unsigned short *pal=HighPal;
\r
1187 int len, i, t, dirtyPal = Pico.m.dirtyPal;
\r
1191 unsigned int *spal=(void *)Pico.cram;
\r
1192 unsigned int *dpal=(void *)HighPal;
\r
1193 for (i = 0x3f/2; i >= 0; i--)
\r
1195 dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
\r
1197 dpal[i] = ((spal[i]&0x000f000f)<<12)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)>>7);
\r
1199 Pico.m.dirtyPal = 0;
\r
1205 // shadowed pixels
\r
1206 for (i = 0x3f; i >= 0; i--)
\r
1207 pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x738e);
\r
1208 // hilighted pixels
\r
1209 for (i = 0x3f; i >= 0; i--) {
\r
1210 t=pal[i]&0xe71c;t+=0x4208;if(t&0x20)t|=0x1c;if(t&0x800)t|=0x700;if(t&0x10000)t|=0xe000;t&=0xe71c;
\r
1211 pal[0x80|i]=(unsigned short)t;
\r
1216 if (Pico.video.reg[12]&1) {
\r
1219 if (!(PicoOpt&0x100)) pd+=32;
\r
1224 for (i = 0; i < len; i++)
\r
1225 pd[i] = pal[ps[i]];
\r
1228 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
\r
1229 amips_clut(pd, ps, pal, len);
\r
1235 static void FinalizeLine8bit(int sh)
\r
1237 unsigned char *pd=DrawLineDest;
\r
1238 int len, rs = rendstatus;
\r
1239 static int dirty_count;
\r
1241 if (!sh && Pico.m.dirtyPal == 1 && Scanline < 222) {
\r
1242 // a hack for mid-frame palette changes
\r
1245 else dirty_count++;
\r
1248 if (dirty_count == 3) {
\r
1249 blockcpy(HighPal, Pico.cram, 0x40*2);
\r
1250 } else if (dirty_count == 11) {
\r
1251 blockcpy(HighPal+0x40, Pico.cram, 0x40*2);
\r
1255 if (Pico.video.reg[12]&1) {
\r
1258 if(!(PicoOpt&0x100)) pd+=32;
\r
1262 if (!sh && rs & 0x20) {
\r
1263 if (dirty_count >= 11) {
\r
1264 blockcpy_or(pd, HighCol+8, len, 0x80);
\r
1266 blockcpy_or(pd, HighCol+8, len, 0x40);
\r
1269 blockcpy(pd, HighCol+8, len);
\r
1273 static void (*FinalizeLine)(int sh) = FinalizeLineBGR444;
\r
1275 // --------------------------------------------
\r
1277 static int DrawDisplay(int sh)
\r
1279 struct PicoVideo *pvid=&Pico.video;
\r
1280 int win=0,edge=0,hvwind=0;
\r
1281 int maxw, maxcells;
\r
1283 rendstatus&=~0xc0;
\r
1285 if(pvid->reg[12]&1) {
\r
1286 maxw = 328; maxcells = 40;
\r
1288 maxw = 264; maxcells = 32;
\r
1291 // Find out if the window is on this line:
\r
1292 win=pvid->reg[0x12];
\r
1293 edge=(win&0x1f)<<3;
\r
1295 if (win&0x80) { if (Scanline>=edge) hvwind=1; }
\r
1296 else { if (Scanline< edge) hvwind=1; }
\r
1298 if (!hvwind) { // we might have a vertical window here
\r
1299 win=pvid->reg[0x11];
\r
1302 if (!edge) hvwind=1;
\r
1303 else if(edge < (maxcells>>1)) hvwind=2;
\r
1306 else if(edge < (maxcells>>1)) hvwind=2;
\r
1311 DrawLayer(1|(sh<<1), HighCacheB, 0, maxcells);
\r
1313 DrawWindow(0, maxcells>>1, 0, sh);
\r
1314 else if (hvwind == 2) {
\r
1315 // ahh, we have vertical window
\r
1316 DrawLayer(0|(sh<<1), HighCacheA, (win&0x80) ? 0 : edge<<1, (win&0x80) ? edge<<1 : maxcells);
\r
1317 DrawWindow( (win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh);
\r
1319 DrawLayer(0|(sh<<1), HighCacheA, 0, maxcells);
\r
1320 DrawAllSprites(HighCacheS, maxw, 0, sh);
\r
1322 if (HighCacheB[0]) DrawTilesFromCache(HighCacheB, sh, 328);
\r
1324 DrawWindow(0, maxcells>>1, 1, sh);
\r
1325 else if (hvwind == 2) {
\r
1326 if(HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, (win&0x80) ? edge<<4 : 328);
\r
1327 DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh);
\r
1329 if (HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh, 328);
\r
1330 DrawAllSprites(HighCacheS, maxw, 1, sh);
\r
1335 for (a = 0, c = HighCacheA; *c; c++, a++);
\r
1336 for (b = 0, c = HighCacheB; *c; c++, b++);
\r
1337 printf("%i:%03i: a=%i, b=%i\n", Pico.m.frame_count, Scanline, a, b);
\r
1345 static int Skip=0;
\r
1347 PICO_INTERNAL void PicoFrameStart(void)
\r
1349 // prepare to do this frame
\r
1350 rendstatus = (PicoOpt&0x80)>>5; // accurate sprites
\r
1352 Pico.video.status &= ~0x0020;
\r
1353 else Pico.video.status |= 0x0020; // sprite collision
\r
1354 if((Pico.video.reg[12]&6) == 6) rendstatus |= 8; // interlace mode
\r
1355 if(Pico.m.dirtyPal) Pico.m.dirtyPal = 2; // reset dirty if needed
\r
1357 PrepareSprites(1);
\r
1361 PICO_INTERNAL int PicoLine(int scan)
\r
1364 if (Skip>0) { Skip--; return 0; } // Skip rendering lines
\r
1367 sh=(Pico.video.reg[0xC]&8)>>3; // shadow/hilight?
\r
1370 BackFill(Pico.video.reg[7], sh);
\r
1371 if (Pico.video.reg[1]&0x40)
\r
1374 if (FinalizeLine != NULL)
\r
1377 Skip=PicoScan(Scanline,DrawLineDest);
\r
1383 void PicoDrawSetColorFormat(int which)
\r
1387 case 2: FinalizeLine = FinalizeLine8bit; break;
\r
1388 case 1: FinalizeLine = FinalizeLineRGB555; break;
\r
1389 case 0: FinalizeLine = FinalizeLineBGR444; break;
\r
1390 default:FinalizeLine = NULL; break;
\r
1392 #if OVERRIDE_HIGHCOL
\r
1393 if (which) HighCol=DefHighCol;
\r