+++ /dev/null
-// This is part of Pico Library\r
-\r
-// (c) Copyright 2004 Dave, All rights reserved.\r
-// (c) Copyright 2006 notaz, All rights reserved.\r
-// Free for non-commercial use.\r
-\r
-// For commercial use, separate licencing terms must be obtained.\r
-\r
-\r
-#include "PicoInt.h"\r
-#ifndef __GNUC__\r
-#pragma warning (disable:4706) // Disable assignment within conditional\r
-#endif\r
-\r
-int (*PicoScan)(unsigned int num, void *data)=NULL;\r
-\r
-//unsigned short DefOutBuff[320*2];\r
-unsigned char HighCol[320*2];\r
-static int HighCacheA[41+1]; // caches for high layers\r
-static int HighCacheB[41+1];\r
-static int HighCacheS[80+1]; // and sprites\r
-static int HighPreSpr[80*2+1]; // slightly preprocessed sprites\r
-char HighSprZ[320+8+8]; // Z-buffer for accurate sprites and shadow/hilight mode\r
- // (if bit 7 == 0, sh caused by tile; if bit 6 == 0 pixel must be shadowed, else hilighted, if bit5 == 1)\r
-// lsb->msb: moved sprites, all window tiles don't use same priority, accurate sprites (copied from PicoOpt), interlace\r
-// dirty sprites, sonic mode, 16bit mode\r
-int rendstatus=0x40;\r
-void *DrawLineDest=HighCol; // pointer to dest buffer where to draw this line to\r
-unsigned char *DrawLineInt=HighCol; // dest for internal code\r
-int Scanline=0; // Scanline\r
-\r
-static int SpriteBlocks;\r
-//unsigned short ppt[] = { 0x0f11, 0x0ff1, 0x01f1, 0x011f, 0x01ff, 0x0f1f, 0x0f0e, 0x0e7c };\r
-\r
-struct TileStrip\r
-{\r
- int nametab; // Position in VRAM of name table (for this tile line)\r
- int line; // Line number in pixels 0x000-0x3ff within the virtual tilemap \r
- int hscroll; // Horizontal scroll value in pixels for the line\r
- int xmask; // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap\r
- int *hc; // cache for high tile codes and their positions\r
- int cells; // cells (tiles) to draw (32 col mode doesn't need to update whole 320)\r
-};\r
-\r
-// stuff available in asm:\r
-#ifdef _ASM_DRAW_C\r
-void DrawWindow(int tstart, int tend, int prio, int sh);\r
-void BackFill(int reg7, int sh);\r
-void DrawSprite(int *sprite, int **hc, int sh);\r
-void DrawTilesFromCache(int *hc, int sh);\r
-void DrawSpritesFromCache(int *hc, int sh);\r
-void DrawLayer(int plane, int *hcache, int maxcells, int sh);\r
-void FinalizeLineBGR444(int sh);\r
-void FinalizeLineRGB555(int sh);\r
-void blockcpy_or(void *dst, void *src, size_t n, int pat);\r
-#else\r
-// utility\r
-void blockcpy_or(void *dst, void *src, size_t n, int pat)\r
-{\r
- unsigned char *pd = dst, *ps = src;\r
- for (; n; n--)\r
- *pd++ = (unsigned char) (*ps++ | pat);\r
-}\r
-#endif\r
-\r
-\r
-static int TileNorm(int sx,int addr,int pal)\r
-{\r
- unsigned char *pd = DrawLineInt+sx;\r
- unsigned int pack=0; unsigned int t=0;\r
-\r
- pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
- if (pack)\r
- {\r
- t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12));\r
- t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8));\r
- t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4));\r
- t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t ));\r
- t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28));\r
- t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24));\r
- t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20));\r
- t=pack&0x000f0000; if (t) pd[7]=(unsigned char)(pal|(t>>16));\r
- return 0;\r
- }\r
-\r
- return 1; // Tile blank\r
-}\r
-\r
-static int TileFlip(int sx,int addr,int pal)\r
-{\r
- unsigned char *pd = DrawLineInt+sx;\r
- unsigned int pack=0; unsigned int t=0;\r
-\r
- pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
- if (pack)\r
- {\r
- t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16));\r
- t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20));\r
- t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24));\r
- t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28));\r
- t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t ));\r
- t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4));\r
- t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8));\r
- t=pack&0x0000f000; if (t) pd[7]=(unsigned char)(pal|(t>>12));\r
- return 0;\r
- }\r
- return 1; // Tile blank\r
-}\r
-\r
-\r
-// tile renderers for hacky operator sprite support\r
-#define sh_pix(x) \\r
- if(!t); \\r
- else if(t==0xe) pd[x]=(unsigned char)((pd[x]&0x3f)|0x80); /* hilight */ \\r
- else if(t==0xf) pd[x]=(unsigned char)((pd[x]&0x3f)|0xc0); /* shadow */ \\r
- else pd[x]=(unsigned char)(pal|t);\r
-\r
-#ifndef _ASM_DRAW_C\r
-static int TileNormSH(int sx,int addr,int pal)\r
-{\r
- unsigned int pack=0; unsigned int t=0;\r
- unsigned char *pd = DrawLineInt+sx;\r
-\r
- pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
- if (pack)\r
- {\r
- t=(pack&0x0000f000)>>12; sh_pix(0);\r
- t=(pack&0x00000f00)>> 8; sh_pix(1);\r
- t=(pack&0x000000f0)>> 4; sh_pix(2);\r
- t=(pack&0x0000000f) ; sh_pix(3);\r
- t=(pack&0xf0000000)>>28; sh_pix(4);\r
- t=(pack&0x0f000000)>>24; sh_pix(5);\r
- t=(pack&0x00f00000)>>20; sh_pix(6);\r
- t=(pack&0x000f0000)>>16; sh_pix(7);\r
- return 0;\r
- }\r
-\r
- return 1; // Tile blank\r
-}\r
-\r
-static int TileFlipSH(int sx,int addr,int pal)\r
-{\r
- unsigned int pack=0; unsigned int t=0;\r
- unsigned char *pd = DrawLineInt+sx;\r
-\r
- pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
- if (pack)\r
- {\r
- t=(pack&0x000f0000)>>16; sh_pix(0);\r
- t=(pack&0x00f00000)>>20; sh_pix(1);\r
- t=(pack&0x0f000000)>>24; sh_pix(2);\r
- t=(pack&0xf0000000)>>28; sh_pix(3);\r
- t=(pack&0x0000000f) ; sh_pix(4);\r
- t=(pack&0x000000f0)>> 4; sh_pix(5);\r
- t=(pack&0x00000f00)>> 8; sh_pix(6);\r
- t=(pack&0x0000f000)>>12; sh_pix(7);\r
- return 0;\r
- }\r
- return 1; // Tile blank\r
-}\r
-#endif\r
-\r
-static int TileNormZ(int sx,int addr,int pal,int zval)\r
-{\r
- unsigned int pack=0; unsigned int t=0;\r
- unsigned char *pd = DrawLineInt+sx;\r
- char *zb = HighSprZ+sx;\r
- int collision = 0, zb_s;\r
-\r
- pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
- if (pack)\r
- {\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- if(collision) Pico.video.status|=0x20;\r
- return 0;\r
- }\r
-\r
- return 1; // Tile blank\r
-}\r
-\r
-static int TileFlipZ(int sx,int addr,int pal,int zval)\r
-{\r
- unsigned int pack=0; unsigned int t=0;\r
- unsigned char *pd = DrawLineInt+sx;\r
- char *zb = HighSprZ+sx;\r
- int collision = 0, zb_s;\r
-\r
- pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
- if (pack)\r
- {\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- 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; } }\r
- if(collision) Pico.video.status|=0x20;\r
- return 0;\r
- }\r
- return 1; // Tile blank\r
-}\r
-\r
-\r
-#define sh_pixZ(x) \\r
- if(t) { \\r
- if(zb[x]) collision=1; \\r
- if(zval>zb[x]) { \\r
- if (t==0xe) { pd[x]=(unsigned char)((pd[x]&0x3f)|0x80); /* hilight */ } \\r
- else if(t==0xf) { pd[x]=(unsigned char)((pd[x]&0x3f)|0xc0); /* shadow */ } \\r
- else { zb[x]=(char)zval; pd[x]=(unsigned char)(pal|t); } \\r
- } \\r
- }\r
-\r
-static int TileNormZSH(int sx,int addr,int pal,int zval)\r
-{\r
- unsigned int pack=0; unsigned int t=0;\r
- unsigned char *pd = DrawLineInt+sx;\r
- char *zb = HighSprZ+sx;\r
- int collision = 0;\r
-\r
- pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
- if (pack)\r
- {\r
- t=(pack&0x0000f000)>>12; sh_pixZ(0);\r
- t=(pack&0x00000f00)>> 8; sh_pixZ(1);\r
- t=(pack&0x000000f0)>> 4; sh_pixZ(2);\r
- t=(pack&0x0000000f) ; sh_pixZ(3);\r
- t=(pack&0xf0000000)>>28; sh_pixZ(4);\r
- t=(pack&0x0f000000)>>24; sh_pixZ(5);\r
- t=(pack&0x00f00000)>>20; sh_pixZ(6);\r
- t=(pack&0x000f0000)>>16; sh_pixZ(7);\r
- if(collision) Pico.video.status|=0x20;\r
- return 0;\r
- }\r
-\r
- return 1; // Tile blank\r
-}\r
-\r
-static int TileFlipZSH(int sx,int addr,int pal,int zval)\r
-{\r
- unsigned int pack=0; unsigned int t=0;\r
- unsigned char *pd = DrawLineInt+sx;\r
- char *zb = HighSprZ+sx;\r
- int collision = 0;\r
-\r
- pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels\r
- if (pack)\r
- {\r
- t=(pack&0x000f0000)>>16; sh_pixZ(0);\r
- t=(pack&0x00f00000)>>20; sh_pixZ(1);\r
- t=(pack&0x0f000000)>>24; sh_pixZ(2);\r
- t=(pack&0xf0000000)>>28; sh_pixZ(3);\r
- t=(pack&0x0000000f) ; sh_pixZ(4);\r
- t=(pack&0x000000f0)>> 4; sh_pixZ(5);\r
- t=(pack&0x00000f00)>> 8; sh_pixZ(6);\r
- t=(pack&0x0000f000)>>12; sh_pixZ(7);\r
- if(collision) Pico.video.status|=0x20;\r
- return 0;\r
- }\r
- return 1; // Tile blank\r
-}\r
-\r
-// --------------------------------------------\r
-\r
-#ifndef _ASM_DRAW_C\r
-static void DrawStrip(struct TileStrip *ts, int sh)\r
-{\r
- int tilex=0,dx=0,ty=0,code=0,addr=0,cells;\r
- int oldcode=-1,blank=-1; // The tile we know is blank\r
- int pal=0;\r
-\r
- // Draw tiles across screen:\r
- tilex=(-ts->hscroll)>>3;\r
- ty=(ts->line&7)<<1; // Y-Offset into tile\r
- dx=((ts->hscroll-1)&7)+1;\r
- cells = ts->cells;\r
- if(dx != 8) cells++; // have hscroll, need to draw 1 cell more\r
-\r
- for (; cells; dx+=8,tilex++,cells--)\r
- {\r
- int zero=0;\r
-\r
- code=Pico.vram[ts->nametab+(tilex&ts->xmask)];\r
- if (code==blank) continue;\r
- if (code>>15) { // high priority tile\r
- int cval = code | (dx<<16) | (ty<<25);\r
- if(code&0x1000) cval^=7<<26;\r
- *ts->hc++ = cval; // cache it\r
- continue;\r
- }\r
-\r
- if (code!=oldcode) {\r
- oldcode = code;\r
- // Get tile address/2:\r
- addr=(code&0x7ff)<<4;\r
- addr+=ty;\r
- if (code&0x1000) addr^=0xe; // Y-flip\r
-\r
-// pal=Pico.cram+((code>>9)&0x30);\r
- pal=((code>>9)&0x30)|(sh<<6);\r
- }\r
-\r
- if (code&0x0800) zero=TileFlip(dx,addr,pal);\r
- else zero=TileNorm(dx,addr,pal);\r
-\r
- if (zero) blank=code; // We know this tile is blank now\r
- }\r
-\r
- // terminate the cache list\r
- *ts->hc = 0;\r
-}\r
-#endif\r
-\r
-// this is messy\r
-#ifndef _ASM_DRAW_C\r
-static\r
-#endif\r
-void DrawStripVSRam(struct TileStrip *ts, int plane)\r
-{\r
- int tilex=0,dx=0,ty=0,code=0,addr=0,cell=0,nametabadd=0;\r
- int oldcode=-1,blank=-1; // The tile we know is blank\r
- int pal=0,scan=Scanline;\r
-\r
- // Draw tiles across screen:\r
- tilex=(-ts->hscroll)>>3;\r
- dx=((ts->hscroll-1)&7)+1;\r
- if(dx != 8) {\r
- int vscroll, line;\r
- cell--; // have hscroll, start with negative cell\r
- // also calculate intial VS stuff\r
- vscroll=Pico.vsram[plane];\r
-\r
- // Find the line in the name table\r
- line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..\r
- nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width]\r
- ty=(line&7)<<1; // Y-Offset into tile\r
- }\r
-\r
- for (; cell < ts->cells; dx+=8,tilex++,cell++)\r
- {\r
- int zero=0;\r
-\r
- if((cell&1)==0) {\r
- int line,vscroll;\r
- vscroll=Pico.vsram[plane+(cell&~1)];\r
-\r
- // Find the line in the name table\r
- line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask ..\r
- nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width]\r
- ty=(line&7)<<1; // Y-Offset into tile\r
- }\r
-\r
- code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];\r
- if (code==blank) continue;\r
- if (code>>15) { // high priority tile\r
- int cval = code | (dx<<16) | (ty<<25);\r
- if(code&0x1000) cval^=7<<26;\r
- *ts->hc++ = cval; // cache it\r
- continue;\r
- }\r
-\r
- if (code!=oldcode) {\r
- oldcode = code;\r
- // Get tile address/2:\r
- addr=(code&0x7ff)<<4;\r
- if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip\r
-\r
-// pal=Pico.cram+((code>>9)&0x30);\r
- pal=((code>>9)&0x30);\r
- }\r
-\r
- if (code&0x0800) zero=TileFlip(dx,addr,pal);\r
- else zero=TileNorm(dx,addr,pal);\r
-\r
- if (zero) blank=code; // We know this tile is blank now\r
- }\r
-\r
- // terminate the cache list\r
- *ts->hc = 0;\r
-}\r
-\r
-#ifndef _ASM_DRAW_C\r
-static\r
-#endif\r
-void DrawStripInterlace(struct TileStrip *ts)\r
-{\r
- int tilex=0,dx=0,ty=0,code=0,addr=0,cells;\r
- int oldcode=-1,blank=-1; // The tile we know is blank\r
- int pal=0;\r
-\r
- // Draw tiles across screen:\r
- tilex=(-ts->hscroll)>>3;\r
- ty=(ts->line&15)<<1; // Y-Offset into tile\r
- dx=((ts->hscroll-1)&7)+1;\r
- cells = ts->cells;\r
- if(dx != 8) cells++; // have hscroll, need to draw 1 cell more\r
-\r
- for (; cells; dx+=8,tilex++,cells--)\r
- {\r
- int zero=0;\r
-\r
- code=Pico.vram[ts->nametab+(tilex&ts->xmask)];\r
- if (code==blank) continue;\r
- if (code>>15) { // high priority tile\r
- int cval = (code&0xfc00) | (dx<<16) | (ty<<25);\r
- cval|=(code&0x3ff)<<1;\r
- if(code&0x1000) cval^=0xf<<26;\r
- *ts->hc++ = cval; // cache it\r
- continue;\r
- }\r
-\r
- if (code!=oldcode) {\r
- oldcode = code;\r
- // Get tile address/2:\r
- addr=(code&0x7ff)<<5;\r
- if (code&0x1000) addr+=30-ty; else addr+=ty; // Y-flip\r
-\r
-// pal=Pico.cram+((code>>9)&0x30);\r
- pal=((code>>9)&0x30);\r
- }\r
-\r
- if (code&0x0800) zero=TileFlip(dx,addr,pal);\r
- else zero=TileNorm(dx,addr,pal);\r
-\r
- if (zero) blank=code; // We know this tile is blank now\r
- }\r
-\r
- // terminate the cache list\r
- *ts->hc = 0;\r
-}\r
-\r
-// --------------------------------------------\r
-\r
-#ifndef _ASM_DRAW_C\r
-static void DrawLayer(int plane, int *hcache, int maxcells, int sh)\r
-{\r
- struct PicoVideo *pvid=&Pico.video;\r
- const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid)\r
- struct TileStrip ts;\r
- int width, height, ymask;\r
- int vscroll, htab;\r
-\r
- ts.hc=hcache;\r
- ts.cells=maxcells;\r
-\r
- // Work out the TileStrip to draw\r
-\r
- // Work out the name table size: 32 64 or 128 tiles (0-3)\r
- width=pvid->reg[16];\r
- height=(width>>4)&3; width&=3;\r
-\r
- ts.xmask=(1<<shift[width])-1; // X Mask in tiles (0x1f-0x7f)\r
- ymask=(height<<8)|0xff; // Y Mask in pixels\r
- if(width == 1) ymask&=0x1ff;\r
- else if(width>1) ymask =0x0ff;\r
-\r
- // Find name table:\r
- if (plane==0) ts.nametab=(pvid->reg[2]&0x38)<< 9; // A\r
- else ts.nametab=(pvid->reg[4]&0x07)<<12; // B\r
-\r
- htab=pvid->reg[13]<<9; // Horizontal scroll table address\r
- if ( pvid->reg[11]&2) htab+=Scanline<<1; // Offset by line\r
- if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile\r
- htab+=plane; // A or B\r
-\r
- // Get horizontal scroll value, will be masked later\r
- ts.hscroll=Pico.vram[htab&0x7fff];\r
-\r
- if((pvid->reg[12]&6) == 6) {\r
- // interlace mode 2\r
- vscroll=Pico.vsram[plane]; // Get vertical scroll value\r
-\r
- // Find the line in the name table\r
- ts.line=(vscroll+(Scanline<<1))&((ymask<<1)|1);\r
- ts.nametab+=(ts.line>>4)<<shift[width];\r
-\r
- DrawStripInterlace(&ts);\r
- } else if( pvid->reg[11]&4) {\r
- // shit, we have 2-cell column based vscroll\r
- // luckily this doesn't happen too often\r
- ts.line=ymask|(shift[width]<<24); // save some stuff instead of line\r
- DrawStripVSRam(&ts, plane);\r
- } else {\r
- vscroll=Pico.vsram[plane]; // Get vertical scroll value\r
-\r
- // Find the line in the name table\r
- ts.line=(vscroll+Scanline)&ymask;\r
- ts.nametab+=(ts.line>>3)<<shift[width];\r
-\r
- DrawStrip(&ts, sh);\r
- }\r
-}\r
-\r
-\r
-// --------------------------------------------\r
-\r
-// tstart & tend are tile pair numbers\r
-static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache\r
-{\r
- struct PicoVideo *pvid=&Pico.video;\r
- int tilex=0,ty=0,nametab,code=0;\r
- int blank=-1; // The tile we know is blank\r
-\r
- // Find name table line:\r
- if (pvid->reg[12]&1)\r
- {\r
- nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode\r
- nametab+=(Scanline>>3)<<6;\r
- }\r
- else\r
- {\r
- nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode\r
- nametab+=(Scanline>>3)<<5;\r
- }\r
-\r
- tilex=tstart<<1;\r
- tend<<=1;\r
-\r
- ty=(Scanline&7)<<1; // Y-Offset into tile\r
-\r
- if(!(rendstatus&2)) {\r
- // check the first tile code\r
- code=Pico.vram[nametab+tilex];\r
- // if the whole window uses same priority (what is often the case), we may be able to skip this field\r
- if((code>>15) != prio) return;\r
- }\r
-\r
- // Draw tiles across screen:\r
- for (; tilex < tend; tilex++)\r
- {\r
- int addr=0,zero=0;\r
- int pal;\r
-\r
- code=Pico.vram[nametab+tilex];\r
- if(code==blank) continue;\r
- if((code>>15) != prio) {\r
- rendstatus|=2;\r
- continue;\r
- }\r
-\r
- pal=((code>>9)&0x30);\r
-\r
- if(sh) {\r
- int tmp, *zb = (int *)(DrawLineInt+8+(tilex<<3));\r
- if(prio) {\r
- tmp = *zb;\r
- if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;\r
- if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;\r
- *zb++=tmp; tmp = *zb;\r
- if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;\r
- if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;\r
- *zb++=tmp;\r
- } else {\r
- pal |= 0x40;\r
- }\r
- }\r
-\r
- // Get tile address/2:\r
- addr=(code&0x7ff)<<4;\r
- if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip\r
-\r
- if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal);\r
- else zero=TileNorm(8+(tilex<<3),addr,pal);\r
-\r
- if (zero) blank=code; // We know this tile is blank now\r
- }\r
-\r
- // terminate the cache list\r
- //*hcache = 0;\r
-}\r
-\r
-// --------------------------------------------\r
-\r
-static void DrawTilesFromCache(int *hc, int sh)\r
-{\r
- int code, addr, zero, dx;\r
- int pal;\r
- short blank=-1; // The tile we know is blank\r
-\r
- // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it\r
-\r
- while((code=*hc++)) {\r
- if(!sh && (short)code == blank) continue;\r
-\r
- // Get tile address/2:\r
- addr=(code&0x7ff)<<4;\r
- addr+=(unsigned int)code>>25; // y offset into tile\r
- dx=(code>>16)&0x1ff;\r
- if(sh) {\r
- unsigned char *zb = DrawLineInt+dx;\r
- if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;\r
- if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;\r
- if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;\r
- if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++;\r
- }\r
-\r
- pal=((code>>9)&0x30);\r
-\r
- if (code&0x0800) zero=TileFlip(dx,addr,pal);\r
- else zero=TileNorm(dx,addr,pal);\r
-\r
- if(zero) blank=(short)code;\r
- }\r
-}\r
-\r
-// --------------------------------------------\r
-\r
-// Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size\r
-// Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r
-\r
-static void DrawSprite(int *sprite, int **hc, int sh)\r
-{\r
- int width=0,height=0;\r
- int row=0,code=0;\r
- int pal;\r
- int tile=0,delta=0;\r
- int sx, sy;\r
- int (*fTileFunc)(int sx,int addr,int pal);\r
-\r
- // parse the sprite data\r
- sy=sprite[0];\r
- code=sprite[1];\r
- sx=code>>16; // X\r
- width=sy>>28;\r
- height=(sy>>24)&7; // Width and height in tiles\r
- sy=(sy<<16)>>16; // Y\r
-\r
- row=Scanline-sy; // Row of the sprite we are on\r
-\r
- if (code&0x1000) row=(height<<3)-1-row; // Flip Y\r
-\r
- tile=code&0x7ff; // Tile number\r
- tile+=row>>3; // Tile number increases going down\r
- delta=height; // Delta to increase tile by going right\r
- if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r
-\r
- tile<<=4; tile+=(row&7)<<1; // Tile address\r
-\r
- if(code&0x8000) { // high priority - cache it\r
- *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>16)&0xf);\r
- } else {\r
- delta<<=4; // Delta of address\r
- pal=((code>>9)&0x30)|(sh<<6);\r
-\r
- if(sh && (code&0x6000) == 0x6000) {\r
- if(code&0x0800) fTileFunc=TileFlipSH;\r
- else fTileFunc=TileNormSH;\r
- } else {\r
- if(code&0x0800) fTileFunc=TileFlip;\r
- else fTileFunc=TileNorm;\r
- }\r
-\r
- for (; width; width--,sx+=8,tile+=delta)\r
- {\r
- if(sx<=0) continue;\r
- if(sx>=328) break; // Offscreen\r
-\r
- tile&=0x7fff; // Clip tile address\r
- fTileFunc(sx,tile,pal);\r
- }\r
- }\r
-}\r
-#endif\r
-\r
-\r
-// Index + 0 : hhhhvvvv s---hhvv yyyyyyyy yyyyyyyy // s: skip flag, h: horiz. size\r
-// Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r
-\r
-static void DrawSpriteZ(int pack, int pack2, int shpri, int sprio)\r
-{\r
- int width=0,height=0;\r
- int row=0;\r
- int pal;\r
- int tile=0,delta=0;\r
- int sx, sy;\r
- int (*fTileFunc)(int sx,int addr,int pal,int zval);\r
-\r
- // parse the sprite data\r
- sx=pack2>>16; // X\r
- sy=(pack <<16)>>16; // Y\r
- width=pack>>28;\r
- height=(pack>>24)&7; // Width and height in tiles\r
-\r
- row=Scanline-sy; // Row of the sprite we are on\r
-\r
- if (pack2&0x1000) row=(height<<3)-1-row; // Flip Y\r
-\r
- tile=pack2&0x7ff; // Tile number\r
- tile+=row>>3; // Tile number increases going down\r
- delta=height; // Delta to increase tile by going right\r
- if (pack2&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r
-\r
- tile<<=4; tile+=(row&7)<<1; // Tile address\r
- delta<<=4; // Delta of address\r
- pal=((pack2>>9)&0x30);\r
- if((shpri&1)&&!(shpri&2)) pal|=0x40;\r
-\r
- shpri&=1;\r
- if((pack2&0x6000) != 0x6000) shpri = 0;\r
- shpri |= (pack2&0x0800)>>10;\r
- switch(shpri) {\r
- default:\r
- case 0: fTileFunc=TileNormZ; break;\r
- case 1: fTileFunc=TileNormZSH; break;\r
- case 2: fTileFunc=TileFlipZ; break;\r
- case 3: fTileFunc=TileFlipZSH; break;\r
- }\r
-\r
- for (; width; width--,sx+=8,tile+=delta)\r
- {\r
- if(sx<=0) continue;\r
- if(sx>=328) break; // Offscreen\r
-\r
- tile&=0x7fff; // Clip tile address\r
- fTileFunc(sx,tile,pal,sprio);\r
- }\r
-}\r
-\r
-static void DrawSpriteInterlace(unsigned int *sprite)\r
-{\r
- int width=0,height=0;\r
- int row=0,code=0;\r
- int pal;\r
- int tile=0,delta=0;\r
- int sx, sy;\r
-\r
- // parse the sprite data\r
- sy=sprite[0];\r
- height=sy>>24;\r
- sy=(sy&0x3ff)-0x100; // Y\r
- width=(height>>2)&3; height&=3;\r
- width++; height++; // Width and height in tiles\r
-\r
- row=(Scanline<<1)-sy; // Row of the sprite we are on\r
-\r
- code=sprite[1];\r
- sx=((code>>16)&0x1ff)-0x78; // X\r
-\r
- if (code&0x1000) row^=(16<<height)-1; // Flip Y\r
-\r
- tile=code&0x3ff; // Tile number\r
- tile+=row>>4; // Tile number increases going down\r
- delta=height; // Delta to increase tile by going right\r
- if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X\r
-\r
- tile<<=5; tile+=(row&15)<<1; // Tile address\r
-\r
- delta<<=5; // Delta of address\r
- pal=((code>>9)&0x30); // Get palette pointer\r
-\r
- for (; width; width--,sx+=8,tile+=delta)\r
- {\r
- if(sx<=0) continue;\r
- if(sx>=328) break; // Offscreen\r
-\r
- tile&=0x7fff; // Clip tile address\r
- if (code&0x0800) TileFlip(sx,tile,pal);\r
- else TileNorm(sx,tile,pal);\r
- }\r
-}\r
-\r
-\r
-static void DrawAllSpritesInterlace(int pri, int maxwidth)\r
-{\r
- struct PicoVideo *pvid=&Pico.video;\r
- int i,u,table,link=0,sline=Scanline<<1;\r
- unsigned int *sprites[80]; // Sprite index\r
-\r
- table=pvid->reg[5]&0x7f;\r
- if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode\r
- table<<=8; // Get sprite table address/2\r
-\r
- for (i=u=0; u < 80 && i < 21; u++)\r
- {\r
- unsigned int *sprite;\r
- int code, sx, sy, height;\r
-\r
- sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r
-\r
- // get sprite info\r
- code = sprite[0];\r
- sx = sprite[1];\r
- if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite\r
-\r
- // check if it is on this line\r
- sy = (code&0x3ff)-0x100;\r
- height = (((code>>24)&3)+1)<<4;\r
- if(sline < sy || sline >= sy+height) goto nextsprite; // no\r
-\r
- // check if sprite is not hidden offscreen\r
- sx = (sx>>16)&0x1ff;\r
- sx -= 0x78; // Get X coordinate + 8\r
- if(sx <= -8*3 || sx >= maxwidth) goto nextsprite;\r
-\r
- // sprite is good, save it's pointer\r
- sprites[i++]=sprite;\r
-\r
- nextsprite:\r
- // Find next sprite\r
- link=(code>>16)&0x7f;\r
- if(!link) break; // End of sprites\r
- }\r
-\r
- // Go through sprites backwards:\r
- for (i-- ;i>=0; i--)\r
- DrawSpriteInterlace(sprites[i]);\r
-}\r
-\r
-\r
-#ifndef _ASM_DRAW_C\r
-static void DrawSpritesFromCache(int *hc, int sh)\r
-{\r
- int code, tile, sx, delta, width;\r
- int pal;\r
- int (*fTileFunc)(int sx,int addr,int pal);\r
-\r
- // *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>24)&0xf);\r
-\r
- while((code=*hc++)) {\r
- pal=(code&0x30);\r
- delta=code&0xf;\r
- width=delta>>2; delta&=3;\r
- width++; delta++; // Width and height in tiles\r
- if (code&0x10000) delta=-delta; // Flip X\r
- delta<<=4;\r
- tile=((unsigned int)code>>17)<<1;\r
- sx=(code<<16)>>22; // sx can be negative (start offscreen), so sign extend\r
-\r
- if(sh && pal == 0x30) { //\r
- if(code&0x10000) fTileFunc=TileFlipSH;\r
- else fTileFunc=TileNormSH;\r
- } else {\r
- if(code&0x10000) fTileFunc=TileFlip;\r
- else fTileFunc=TileNorm;\r
- }\r
-\r
- for (; width; width--,sx+=8,tile+=delta)\r
- {\r
- if(sx<=0) continue;\r
- if(sx>=328) break; // Offscreen\r
-\r
- tile&=0x7fff; // Clip tile address\r
- fTileFunc(sx,tile,pal);\r
- }\r
- }\r
-}\r
-#endif\r
-\r
-\r
-// Index + 0 : ----hhvv -lllllll -------y yyyyyyyy\r
-// Index + 4 : -------x xxxxxxxx pccvhnnn nnnnnnnn\r
-// v\r
-// Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size\r
-// Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r
-\r
-static void PrepareSprites(int full)\r
-{\r
- struct PicoVideo *pvid=&Pico.video;\r
- int u=0,link=0,sblocks=0;\r
- int table=0;\r
- int *pd = HighPreSpr;\r
-\r
- table=pvid->reg[5]&0x7f;\r
- if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode\r
- table<<=8; // Get sprite table address/2\r
-\r
- if (!full)\r
- {\r
- int pack;\r
- // updates: tilecode, sx\r
- for (u=0; u < 80 && (pack = *pd); u++, pd+=2)\r
- {\r
- unsigned int *sprite;\r
- int code, code2, sx, sy, skip=0;\r
-\r
- sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r
-\r
- // parse sprite info\r
- code = sprite[0];\r
- code2 = sprite[1];\r
- code2 &= ~0xfe000000;\r
- code2 -= 0x00780000; // Get X coordinate + 8 in upper 16 bits\r
- sx = code2>>16;\r
-\r
- if((sx <= 8-((pack>>28)<<3) && sx >= -0x76) || sx >= 328) skip=1<<23;\r
- else if ((sy = (pack<<16)>>16) < 240 && sy > -32) {\r
- int sbl = (2<<(pack>>28))-1;\r
- sblocks |= sbl<<(sy>>3);\r
- }\r
-\r
- *pd = (pack&~(1<<23))|skip;\r
- *(pd+1) = code2;\r
-\r
- // Find next sprite\r
- link=(code>>16)&0x7f;\r
- if(!link) break; // End of sprites\r
- }\r
- SpriteBlocks |= sblocks;\r
- }\r
- else\r
- {\r
- for (; u < 80; u++)\r
- {\r
- unsigned int *sprite;\r
- int code, code2, sx, sy, hv, height, width, skip=0, sx_min;\r
-\r
- sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r
-\r
- // parse sprite info\r
- code = sprite[0];\r
- sy = (code&0x1ff)-0x80;\r
- hv = (code>>24)&0xf;\r
- height = (hv&3)+1;\r
-\r
- if(sy > 240 || sy + (height<<3) <= 0) skip|=1<<22;\r
- \r
- width = (hv>>2)+1;\r
- code2 = sprite[1];\r
- sx = (code2>>16)&0x1ff;\r
- sx -= 0x78; // Get X coordinate + 8\r
- sx_min = 8-(width<<3);\r
- \r
- if((sx <= sx_min && sx >= -0x76) || sx >= 328) skip|=1<<23;\r
- else if (sx > sx_min && !skip) {\r
- int sbl = (2<<height)-1;\r
- int shi = sy>>3;\r
- if(shi < 0) shi=0; // negative sy\r
- sblocks |= sbl<<shi;\r
- }\r
- \r
- *pd++ = (width<<28)|(height<<24)|skip|(hv<<16)|((unsigned short)sy);\r
- *pd++ = (sx<<16)|((unsigned short)code2);\r
- \r
- // Find next sprite\r
- link=(code>>16)&0x7f;\r
- if(!link) break; // End of sprites\r
- }\r
- SpriteBlocks = sblocks;\r
- *pd = 0; // terminate\r
- }\r
-}\r
-\r
-static void DrawAllSprites(int *hcache, int maxwidth, int prio, int sh)\r
-{\r
- int i,u,n;\r
- int sx1seen=0; // sprite with x coord 1 or 0 seen\r
- int ntiles = 0; // tile counter for sprite limit emulation\r
- int *sprites[40]; // Sprites to draw in fast mode\r
- int *ps, pack, rs = rendstatus, scan=Scanline;\r
-\r
- if(rs&8) {\r
- DrawAllSpritesInterlace(prio, maxwidth);\r
- return;\r
- }\r
- if(rs&0x11) {\r
- //dprintf("PrepareSprites(%i) [%i]", (rs>>4)&1, scan);\r
- PrepareSprites(rs&0x10);\r
- rendstatus=rs&~0x11;\r
- }\r
- if (!(SpriteBlocks & (1<<(scan>>3)))) return;\r
-\r
- if(((rs&4)||sh)&&prio==0)\r
- memset(HighSprZ, 0, 328);\r
- if(!(rs&4)&&prio) {\r
- if(hcache[0]) DrawSpritesFromCache(hcache, sh);\r
- return;\r
- }\r
-\r
- ps = HighPreSpr;\r
-\r
- // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size\r
- // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8\r
-\r
- for(i=u=n=0; (pack = *ps) && n < 20; ps+=2, u++)\r
- {\r
- int sx, sy, row, pack2;\r
-\r
- if(pack & 0x00400000) continue;\r
-\r
- // get sprite info\r
- pack2 = *(ps+1);\r
- sx = pack2>>16;\r
- sy = (pack <<16)>>16;\r
- row = scan-sy;\r
-\r
- //dprintf("x: %i y: %i %ix%i", sx, sy, (pack>>28)<<3, (pack>>21)&0x38);\r
-\r
- if(sx == -0x77) sx1seen|=1; // for masking mode 2\r
-\r
- // check if it is on this line\r
- if(row < 0 || row >= ((pack>>21)&0x38)) continue; // no\r
- n++; // number of sprites on this line (both visible and hidden, max is 20) [broken]\r
-\r
- // sprite limit\r
- ntiles += pack>>28;\r
- if(ntiles > 40) break;\r
-\r
- if(pack & 0x00800000) continue;\r
-\r
- // masking sprite?\r
- if(sx == -0x78) {\r
- if(!(sx1seen&1) || sx1seen==3) {\r
- break; // this sprite is not drawn and remaining sprites are masked\r
- }\r
- if((sx1seen>>8) == 0) sx1seen=(i+1)<<8;\r
- continue;\r
- }\r
- else if(sx == -0x77) {\r
- // masking mode2 (Outrun, Galaxy Force II, Shadow of the beast)\r
- if(sx1seen>>8) { i=(sx1seen>>8)-1; break; } // seen both 0 and 1\r
- sx1seen |= 2;\r
- continue;\r
- }\r
-\r
- // accurate sprites\r
- //dprintf("P:%i",((sx>>15)&1));\r
- if(rs&4) {\r
- // might need to skip this sprite\r
- if((pack2&0x8000) ^ (prio<<15)) continue;\r
- DrawSpriteZ(pack,pack2,sh|(prio<<1),(char)(0x1f-n));\r
- continue;\r
- }\r
-\r
- // sprite is good, save it's pointer\r
- sprites[i++]=ps;\r
- }\r
-\r
- // Go through sprites backwards:\r
- if(!(rs&4)) {\r
- for (i--; i>=0; i--)\r
- DrawSprite(sprites[i],&hcache,sh);\r
-\r
- // terminate cache list\r
- *hcache = 0;\r
- }\r
-}\r
-\r
-\r
-// --------------------------------------------\r
-\r
-#ifndef _ASM_DRAW_C\r
-static void BackFill(int reg7, int sh)\r
-{\r
- unsigned int back=0;\r
- unsigned int *pd=NULL,*end=NULL;\r
-\r
- // Start with a blank scanline (background colour):\r
- back=reg7&0x3f;\r
- back|=sh<<6;\r
- back|=back<<8;\r
- back|=back<<16;\r
-\r
- pd= (unsigned int *)(DrawLineInt+8);\r
- end=(unsigned int *)(DrawLineInt+8+320);\r
-\r
- do { pd[0]=pd[1]=pd[2]=pd[3]=back; pd+=4; } while (pd<end);\r
-}\r
-#endif\r
-\r
-// --------------------------------------------\r
-\r
-unsigned short HighPal[0x100];\r
-\r
-#ifndef _ASM_DRAW_C\r
-static void FinalizeLineBGR444(int sh)\r
-{\r
- unsigned short *pd=DrawLineDest;\r
- unsigned char *ps=DrawLineInt+8;\r
- unsigned short *pal=Pico.cram;\r
- int len, i, t;\r
-\r
- if (Pico.video.reg[12]&1) {\r
- len = 320;\r
- } else {\r
- if(!(PicoOpt&0x100)) pd+=32;\r
- len = 256;\r
- }\r
-\r
- if(sh) {\r
- pal=HighPal;\r
- if(Pico.m.dirtyPal) {\r
- blockcpy(pal, Pico.cram, 0x40*2);\r
- // shadowed pixels\r
- for(i = 0x3f; i >= 0; i--)\r
- pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x0777);\r
- // hilighted pixels\r
- for(i = 0x3f; i >= 0; i--) {\r
- t=pal[i]&0xeee;t+=0x444;if(t&0x10)t|=0xe;if(t&0x100)t|=0xe0;if(t&0x1000)t|=0xe00;t&=0xeee;\r
- pal[0x80|i]=(unsigned short)t;\r
- }\r
- Pico.m.dirtyPal = 0;\r
- }\r
- }\r
-\r
- for(i = 0; i < len; i++)\r
- pd[i] = pal[ps[i]];\r
-}\r
-\r
-\r
-static void FinalizeLineRGB555(int sh)\r
-{\r
- unsigned short *pd=DrawLineDest;\r
- unsigned char *ps=DrawLineInt+8;\r
- unsigned short *pal=HighPal;\r
- int len, i, t, dirtyPal = Pico.m.dirtyPal;\r
-\r
- if(dirtyPal) {\r
- unsigned short *ppal=Pico.cram;\r
- for(i = 0x3f; i >= 0; i--)\r
- pal[i] = (unsigned short) (((ppal[i]&0x00f)<<12)|((ppal[i]&0x0f0)<<3)|((ppal[i]&0xf00)>>7));\r
- Pico.m.dirtyPal = 0;\r
- }\r
-\r
- if (Pico.video.reg[12]&1) {\r
- len = 320;\r
- } else {\r
- if(!(PicoOpt&0x100)) pd+=32;\r
- len = 256;\r
- }\r
-\r
- if(sh) {\r
- if(dirtyPal) {\r
- // shadowed pixels\r
- for(i = 0x3f; i >= 0; i--)\r
- pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x738e);\r
- // hilighted pixels\r
- for(i = 0x3f; i >= 0; i--) {\r
- t=pal[i]&0xe71c;t+=0x4208;if(t&0x20)t|=0x1c;if(t&0x800)t|=0x700;if(t&0x10000)t|=0xe000;t&=0xe71c;\r
- pal[0x80|i]=(unsigned short)t;\r
- }\r
- }\r
- }\r
-\r
- for(i = 0; i < len; i++)\r
- pd[i] = pal[ps[i]];\r
-}\r
-#endif\r
-\r
-static void FinalizeLine8bit(int sh)\r
-{\r
- unsigned char *pd=DrawLineDest;\r
- int len, rs = rendstatus;\r
- static int dirty_count;\r
-\r
- if (!sh && Pico.m.dirtyPal && Scanline < 222) {\r
- // a hack for mid-frame palette changes\r
- if (!(rs & 0x20))\r
- dirty_count = 1;\r
- else dirty_count++;\r
- rs |= 0x20;\r
- rendstatus = rs;\r
- if (dirty_count == 3) {\r
- blockcpy(HighPal, Pico.cram, 0x40*2);\r
- } else if (dirty_count == 11) {\r
- blockcpy(HighPal+0x40, Pico.cram, 0x40*2);\r
- }\r
- }\r
-\r
- if (Pico.video.reg[12]&1) {\r
- len = 320;\r
- } else {\r
- if(!(PicoOpt&0x100)) pd+=32;\r
- len = 256;\r
- }\r
-\r
-/* test\r
- if (!sh && rs & 0x20) {\r
- if (dirty_count >= 11) {\r
- blockcpy_or(pd, HighCol+8, len, 0x80);\r
- } else {\r
- blockcpy_or(pd, HighCol+8, len, 0x40);\r
- }\r
- } else {\r
- blockcpy(pd, HighCol+8, len);\r
- }\r
-*/\r
-}\r
-\r
-void (*FinalizeLine)(int sh) = FinalizeLineBGR444;\r
-\r
-// --------------------------------------------\r
-\r
-static int DrawDisplay(int sh)\r
-{\r
- struct PicoVideo *pvid=&Pico.video;\r
- int win=0,edge=0,hvwind=0;\r
- int maxw, maxcells;\r
-\r
- if(pvid->reg[12]&1) {\r
- maxw = 328; maxcells = 40;\r
- } else {\r
- maxw = 264; maxcells = 32;\r
- }\r
-\r
- // Find out if the window is on this line:\r
- win=pvid->reg[0x12];\r
- edge=(win&0x1f)<<3;\r
-\r
- if (win&0x80) { if (Scanline>=edge) hvwind=1; }\r
- else { if (Scanline< edge) hvwind=1; }\r
-\r
- if(!hvwind) { // we might have a vertical window here \r
- win=pvid->reg[0x11];\r
- edge=win&0x1f;\r
- if(win&0x80) {\r
- if(!edge) hvwind=1;\r
- else if(edge < (maxcells>>1)) hvwind=2;\r
- } else {\r
- if(!edge);\r
- else if(edge < (maxcells>>1)) hvwind=2;\r
- else hvwind=1;\r
- }\r
- }\r
-\r
- DrawLayer(1, HighCacheB, maxcells, sh);\r
- if(hvwind == 1)\r
- DrawWindow(0, maxcells>>1, 0, sh); // HighCacheAW\r
- else if(hvwind == 2) {\r
- // ahh, we have vertical window\r
- DrawLayer(0, HighCacheA, (win&0x80) ? edge<<1 : maxcells, sh);\r
- DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh); // HighCacheW\r
- } else\r
- DrawLayer(0, HighCacheA, maxcells, sh);\r
- DrawAllSprites(HighCacheS, maxw, 0, sh);\r
-\r
- if(HighCacheB[0]) DrawTilesFromCache(HighCacheB, sh);\r
- if(hvwind == 1)\r
- DrawWindow(0, maxcells>>1, 1, sh);\r
- else if(hvwind == 2) {\r
- if(HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh);\r
- DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh);\r
- } else\r
- if(HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh);\r
- DrawAllSprites(HighCacheS, maxw, 1, sh);\r
-\r
- return 0;\r
-}\r
-\r
-\r
-void PicoFrameStart()\r
-{\r
- // prepare to do this frame\r
- rendstatus &= 0x40;\r
- rendstatus |= (PicoOpt&0x80)>>5; // accurate sprites\r
- if(rendstatus)\r
- Pico.video.status &= ~0x0020;\r
- else Pico.video.status |= 0x0020; // sprite collision\r
- if((Pico.video.reg[12]&6) == 6) rendstatus |= 8; // interlace mode\r
-\r
- PrepareSprites(1);\r
-}\r
-\r
-static int Skip=0;\r
-\r
-int PicoLine(int scan)\r
-{\r
- int sh;\r
- if (Skip>0) { Skip--; return 0; } // Skip rendering lines\r
-\r
- if(!(rendstatus&0x40))\r
- DrawLineInt = DrawLineDest;\r
-\r
- Scanline=scan;\r
- sh=(Pico.video.reg[0xC]&8)>>3; // shadow/hilight?\r
-\r
- // Draw screen:\r
- BackFill(Pico.video.reg[7], sh);\r
- if (Pico.video.reg[1]&0x40)\r
- DrawDisplay(sh);\r
-\r
- FinalizeLine(sh);\r
- //if (SpriteBlocks & (1<<(scan>>3))) for (sh=0; sh < 30; sh++) DrawLineDest[sh] = 0xf;\r
-\r
- Skip=PicoScan(Scanline,DrawLineDest);\r
-\r
- return 0;\r
-}\r
-\r
-\r
-void DrawSetColorFormat(int which)\r
-{\r
- rendstatus |= 0x40;\r
- DrawLineInt = HighCol;\r
-\r
- if (which == 2) {\r
- rendstatus &= ~0x40;\r
- FinalizeLine = FinalizeLine8bit;\r
- } else if (which == 1)\r
- FinalizeLine = FinalizeLineRGB555;\r
- else\r
- FinalizeLine = FinalizeLineBGR444;\r
-}\r
notaz.gp2x.de / picodrive.git / blobdiff