X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=Pico%2FDraw_sh.c;fp=Pico%2FDraw_sh.c;h=0000000000000000000000000000000000000000;hb=70357ce52578dee0dd3b3663902cf872c3d34258;hp=2f05a69a968e7479ab95ada2aa4b05f3b0ecaf74;hpb=7d4906bfc93ced40a544534f433f06b00add52b0;p=picodrive.git diff --git a/Pico/Draw_sh.c b/Pico/Draw_sh.c deleted file mode 100644 index 2f05a69..0000000 --- a/Pico/Draw_sh.c +++ /dev/null @@ -1,1301 +0,0 @@ -// This is part of Pico Library - -// (c) Copyright 2004 Dave, All rights reserved. -// (c) Copyright 2006 notaz, All rights reserved. -// Free for non-commercial use. - -// For commercial use, separate licencing terms must be obtained. - - -#include "PicoInt.h" -#ifndef __GNUC__ -#pragma warning (disable:4706) // Disable assignment within conditional -#endif - -int (*PicoScan)(unsigned int num, void *data)=NULL; - -//unsigned short DefOutBuff[320*2]; -unsigned char HighCol[320*2]; -static int HighCacheA[41+1]; // caches for high layers -static int HighCacheB[41+1]; -static int HighCacheS[80+1]; // and sprites -static int HighPreSpr[80*2+1]; // slightly preprocessed sprites -char HighSprZ[320+8+8]; // Z-buffer for accurate sprites and shadow/hilight mode - // (if bit 7 == 0, sh caused by tile; if bit 6 == 0 pixel must be shadowed, else hilighted, if bit5 == 1) -// lsb->msb: moved sprites, all window tiles don't use same priority, accurate sprites (copied from PicoOpt), interlace -// dirty sprites, sonic mode, 16bit mode -int rendstatus=0x40; -void *DrawLineDest=HighCol; // pointer to dest buffer where to draw this line to -unsigned char *DrawLineInt=HighCol; // dest for internal code -int Scanline=0; // Scanline - -static int SpriteBlocks; -//unsigned short ppt[] = { 0x0f11, 0x0ff1, 0x01f1, 0x011f, 0x01ff, 0x0f1f, 0x0f0e, 0x0e7c }; - -struct TileStrip -{ - int nametab; // Position in VRAM of name table (for this tile line) - int line; // Line number in pixels 0x000-0x3ff within the virtual tilemap - int hscroll; // Horizontal scroll value in pixels for the line - int xmask; // X-Mask (0x1f - 0x7f) for horizontal wraparound in the tilemap - int *hc; // cache for high tile codes and their positions - int cells; // cells (tiles) to draw (32 col mode doesn't need to update whole 320) -}; - -// stuff available in asm: -#ifdef _ASM_DRAW_C -void DrawWindow(int tstart, int tend, int prio, int sh); -void BackFill(int reg7, int sh); -void DrawSprite(int *sprite, int **hc, int sh); -void DrawTilesFromCache(int *hc, int sh); -void DrawSpritesFromCache(int *hc, int sh); -void DrawLayer(int plane, int *hcache, int maxcells, int sh); -void FinalizeLineBGR444(int sh); -void FinalizeLineRGB555(int sh); -void blockcpy_or(void *dst, void *src, size_t n, int pat); -#else -// utility -void blockcpy_or(void *dst, void *src, size_t n, int pat) -{ - unsigned char *pd = dst, *ps = src; - for (; n; n--) - *pd++ = (unsigned char) (*ps++ | pat); -} -#endif - - -static int TileNorm(int sx,int addr,int pal) -{ - unsigned char *pd = DrawLineInt+sx; - unsigned int pack=0; unsigned int t=0; - - pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels - if (pack) - { - t=pack&0x0000f000; if (t) pd[0]=(unsigned char)(pal|(t>>12)); - t=pack&0x00000f00; if (t) pd[1]=(unsigned char)(pal|(t>> 8)); - t=pack&0x000000f0; if (t) pd[2]=(unsigned char)(pal|(t>> 4)); - t=pack&0x0000000f; if (t) pd[3]=(unsigned char)(pal|(t )); - t=pack&0xf0000000; if (t) pd[4]=(unsigned char)(pal|(t>>28)); - t=pack&0x0f000000; if (t) pd[5]=(unsigned char)(pal|(t>>24)); - t=pack&0x00f00000; if (t) pd[6]=(unsigned char)(pal|(t>>20)); - t=pack&0x000f0000; if (t) pd[7]=(unsigned char)(pal|(t>>16)); - return 0; - } - - return 1; // Tile blank -} - -static int TileFlip(int sx,int addr,int pal) -{ - unsigned char *pd = DrawLineInt+sx; - unsigned int pack=0; unsigned int t=0; - - pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels - if (pack) - { - t=pack&0x000f0000; if (t) pd[0]=(unsigned char)(pal|(t>>16)); - t=pack&0x00f00000; if (t) pd[1]=(unsigned char)(pal|(t>>20)); - t=pack&0x0f000000; if (t) pd[2]=(unsigned char)(pal|(t>>24)); - t=pack&0xf0000000; if (t) pd[3]=(unsigned char)(pal|(t>>28)); - t=pack&0x0000000f; if (t) pd[4]=(unsigned char)(pal|(t )); - t=pack&0x000000f0; if (t) pd[5]=(unsigned char)(pal|(t>> 4)); - t=pack&0x00000f00; if (t) pd[6]=(unsigned char)(pal|(t>> 8)); - t=pack&0x0000f000; if (t) pd[7]=(unsigned char)(pal|(t>>12)); - return 0; - } - return 1; // Tile blank -} - - -// tile renderers for hacky operator sprite support -#define sh_pix(x) \ - if(!t); \ - else if(t==0xe) pd[x]=(unsigned char)((pd[x]&0x3f)|0x80); /* hilight */ \ - else if(t==0xf) pd[x]=(unsigned char)((pd[x]&0x3f)|0xc0); /* shadow */ \ - else pd[x]=(unsigned char)(pal|t); - -#ifndef _ASM_DRAW_C -static int TileNormSH(int sx,int addr,int pal) -{ - unsigned int pack=0; unsigned int t=0; - unsigned char *pd = DrawLineInt+sx; - - pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels - if (pack) - { - t=(pack&0x0000f000)>>12; sh_pix(0); - t=(pack&0x00000f00)>> 8; sh_pix(1); - t=(pack&0x000000f0)>> 4; sh_pix(2); - t=(pack&0x0000000f) ; sh_pix(3); - t=(pack&0xf0000000)>>28; sh_pix(4); - t=(pack&0x0f000000)>>24; sh_pix(5); - t=(pack&0x00f00000)>>20; sh_pix(6); - t=(pack&0x000f0000)>>16; sh_pix(7); - return 0; - } - - return 1; // Tile blank -} - -static int TileFlipSH(int sx,int addr,int pal) -{ - unsigned int pack=0; unsigned int t=0; - unsigned char *pd = DrawLineInt+sx; - - pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels - if (pack) - { - t=(pack&0x000f0000)>>16; sh_pix(0); - t=(pack&0x00f00000)>>20; sh_pix(1); - t=(pack&0x0f000000)>>24; sh_pix(2); - t=(pack&0xf0000000)>>28; sh_pix(3); - t=(pack&0x0000000f) ; sh_pix(4); - t=(pack&0x000000f0)>> 4; sh_pix(5); - t=(pack&0x00000f00)>> 8; sh_pix(6); - t=(pack&0x0000f000)>>12; sh_pix(7); - return 0; - } - return 1; // Tile blank -} -#endif - -static int TileNormZ(int sx,int addr,int pal,int zval) -{ - unsigned int pack=0; unsigned int t=0; - unsigned char *pd = DrawLineInt+sx; - char *zb = HighSprZ+sx; - int collision = 0, zb_s; - - pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels - if (pack) - { - 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; } } - 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; } } - 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; } } - 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; } } - 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; } } - 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; } } - 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; } } - 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; } } - if(collision) Pico.video.status|=0x20; - return 0; - } - - return 1; // Tile blank -} - -static int TileFlipZ(int sx,int addr,int pal,int zval) -{ - unsigned int pack=0; unsigned int t=0; - unsigned char *pd = DrawLineInt+sx; - char *zb = HighSprZ+sx; - int collision = 0, zb_s; - - pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels - if (pack) - { - 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; } } - 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; } } - 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; } } - 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; } } - 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; } } - 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; } } - 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; } } - 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; } } - if(collision) Pico.video.status|=0x20; - return 0; - } - return 1; // Tile blank -} - - -#define sh_pixZ(x) \ - if(t) { \ - if(zb[x]) collision=1; \ - if(zval>zb[x]) { \ - if (t==0xe) { pd[x]=(unsigned char)((pd[x]&0x3f)|0x80); /* hilight */ } \ - else if(t==0xf) { pd[x]=(unsigned char)((pd[x]&0x3f)|0xc0); /* shadow */ } \ - else { zb[x]=(char)zval; pd[x]=(unsigned char)(pal|t); } \ - } \ - } - -static int TileNormZSH(int sx,int addr,int pal,int zval) -{ - unsigned int pack=0; unsigned int t=0; - unsigned char *pd = DrawLineInt+sx; - char *zb = HighSprZ+sx; - int collision = 0; - - pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels - if (pack) - { - t=(pack&0x0000f000)>>12; sh_pixZ(0); - t=(pack&0x00000f00)>> 8; sh_pixZ(1); - t=(pack&0x000000f0)>> 4; sh_pixZ(2); - t=(pack&0x0000000f) ; sh_pixZ(3); - t=(pack&0xf0000000)>>28; sh_pixZ(4); - t=(pack&0x0f000000)>>24; sh_pixZ(5); - t=(pack&0x00f00000)>>20; sh_pixZ(6); - t=(pack&0x000f0000)>>16; sh_pixZ(7); - if(collision) Pico.video.status|=0x20; - return 0; - } - - return 1; // Tile blank -} - -static int TileFlipZSH(int sx,int addr,int pal,int zval) -{ - unsigned int pack=0; unsigned int t=0; - unsigned char *pd = DrawLineInt+sx; - char *zb = HighSprZ+sx; - int collision = 0; - - pack=*(unsigned int *)(Pico.vram+addr); // Get 8 pixels - if (pack) - { - t=(pack&0x000f0000)>>16; sh_pixZ(0); - t=(pack&0x00f00000)>>20; sh_pixZ(1); - t=(pack&0x0f000000)>>24; sh_pixZ(2); - t=(pack&0xf0000000)>>28; sh_pixZ(3); - t=(pack&0x0000000f) ; sh_pixZ(4); - t=(pack&0x000000f0)>> 4; sh_pixZ(5); - t=(pack&0x00000f00)>> 8; sh_pixZ(6); - t=(pack&0x0000f000)>>12; sh_pixZ(7); - if(collision) Pico.video.status|=0x20; - return 0; - } - return 1; // Tile blank -} - -// -------------------------------------------- - -#ifndef _ASM_DRAW_C -static void DrawStrip(struct TileStrip *ts, int sh) -{ - int tilex=0,dx=0,ty=0,code=0,addr=0,cells; - int oldcode=-1,blank=-1; // The tile we know is blank - int pal=0; - - // Draw tiles across screen: - tilex=(-ts->hscroll)>>3; - ty=(ts->line&7)<<1; // Y-Offset into tile - dx=((ts->hscroll-1)&7)+1; - cells = ts->cells; - if(dx != 8) cells++; // have hscroll, need to draw 1 cell more - - for (; cells; dx+=8,tilex++,cells--) - { - int zero=0; - - code=Pico.vram[ts->nametab+(tilex&ts->xmask)]; - if (code==blank) continue; - if (code>>15) { // high priority tile - int cval = code | (dx<<16) | (ty<<25); - if(code&0x1000) cval^=7<<26; - *ts->hc++ = cval; // cache it - continue; - } - - if (code!=oldcode) { - oldcode = code; - // Get tile address/2: - addr=(code&0x7ff)<<4; - addr+=ty; - if (code&0x1000) addr^=0xe; // Y-flip - -// pal=Pico.cram+((code>>9)&0x30); - pal=((code>>9)&0x30)|(sh<<6); - } - - if (code&0x0800) zero=TileFlip(dx,addr,pal); - else zero=TileNorm(dx,addr,pal); - - if (zero) blank=code; // We know this tile is blank now - } - - // terminate the cache list - *ts->hc = 0; -} -#endif - -// this is messy -#ifndef _ASM_DRAW_C -static -#endif -void DrawStripVSRam(struct TileStrip *ts, int plane) -{ - int tilex=0,dx=0,ty=0,code=0,addr=0,cell=0,nametabadd=0; - int oldcode=-1,blank=-1; // The tile we know is blank - int pal=0,scan=Scanline; - - // Draw tiles across screen: - tilex=(-ts->hscroll)>>3; - dx=((ts->hscroll-1)&7)+1; - if(dx != 8) { - int vscroll, line; - cell--; // have hscroll, start with negative cell - // also calculate intial VS stuff - vscroll=Pico.vsram[plane]; - - // Find the line in the name table - line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask .. - nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width] - ty=(line&7)<<1; // Y-Offset into tile - } - - for (; cell < ts->cells; dx+=8,tilex++,cell++) - { - int zero=0; - - if((cell&1)==0) { - int line,vscroll; - vscroll=Pico.vsram[plane+(cell&~1)]; - - // Find the line in the name table - line=(vscroll+scan)&ts->line&0xffff; // ts->line is really ymask .. - nametabadd=(line>>3)<<(ts->line>>24); // .. and shift[width] - ty=(line&7)<<1; // Y-Offset into tile - } - - code=Pico.vram[ts->nametab+nametabadd+(tilex&ts->xmask)]; - if (code==blank) continue; - if (code>>15) { // high priority tile - int cval = code | (dx<<16) | (ty<<25); - if(code&0x1000) cval^=7<<26; - *ts->hc++ = cval; // cache it - continue; - } - - if (code!=oldcode) { - oldcode = code; - // Get tile address/2: - addr=(code&0x7ff)<<4; - if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip - -// pal=Pico.cram+((code>>9)&0x30); - pal=((code>>9)&0x30); - } - - if (code&0x0800) zero=TileFlip(dx,addr,pal); - else zero=TileNorm(dx,addr,pal); - - if (zero) blank=code; // We know this tile is blank now - } - - // terminate the cache list - *ts->hc = 0; -} - -#ifndef _ASM_DRAW_C -static -#endif -void DrawStripInterlace(struct TileStrip *ts) -{ - int tilex=0,dx=0,ty=0,code=0,addr=0,cells; - int oldcode=-1,blank=-1; // The tile we know is blank - int pal=0; - - // Draw tiles across screen: - tilex=(-ts->hscroll)>>3; - ty=(ts->line&15)<<1; // Y-Offset into tile - dx=((ts->hscroll-1)&7)+1; - cells = ts->cells; - if(dx != 8) cells++; // have hscroll, need to draw 1 cell more - - for (; cells; dx+=8,tilex++,cells--) - { - int zero=0; - - code=Pico.vram[ts->nametab+(tilex&ts->xmask)]; - if (code==blank) continue; - if (code>>15) { // high priority tile - int cval = (code&0xfc00) | (dx<<16) | (ty<<25); - cval|=(code&0x3ff)<<1; - if(code&0x1000) cval^=0xf<<26; - *ts->hc++ = cval; // cache it - continue; - } - - if (code!=oldcode) { - oldcode = code; - // Get tile address/2: - addr=(code&0x7ff)<<5; - if (code&0x1000) addr+=30-ty; else addr+=ty; // Y-flip - -// pal=Pico.cram+((code>>9)&0x30); - pal=((code>>9)&0x30); - } - - if (code&0x0800) zero=TileFlip(dx,addr,pal); - else zero=TileNorm(dx,addr,pal); - - if (zero) blank=code; // We know this tile is blank now - } - - // terminate the cache list - *ts->hc = 0; -} - -// -------------------------------------------- - -#ifndef _ASM_DRAW_C -static void DrawLayer(int plane, int *hcache, int maxcells, int sh) -{ - struct PicoVideo *pvid=&Pico.video; - const char shift[4]={5,6,5,7}; // 32,64 or 128 sized tilemaps (2 is invalid) - struct TileStrip ts; - int width, height, ymask; - int vscroll, htab; - - ts.hc=hcache; - ts.cells=maxcells; - - // Work out the TileStrip to draw - - // Work out the name table size: 32 64 or 128 tiles (0-3) - width=pvid->reg[16]; - height=(width>>4)&3; width&=3; - - ts.xmask=(1<1) ymask =0x0ff; - - // Find name table: - if (plane==0) ts.nametab=(pvid->reg[2]&0x38)<< 9; // A - else ts.nametab=(pvid->reg[4]&0x07)<<12; // B - - htab=pvid->reg[13]<<9; // Horizontal scroll table address - if ( pvid->reg[11]&2) htab+=Scanline<<1; // Offset by line - if ((pvid->reg[11]&1)==0) htab&=~0xf; // Offset by tile - htab+=plane; // A or B - - // Get horizontal scroll value, will be masked later - ts.hscroll=Pico.vram[htab&0x7fff]; - - if((pvid->reg[12]&6) == 6) { - // interlace mode 2 - vscroll=Pico.vsram[plane]; // Get vertical scroll value - - // Find the line in the name table - ts.line=(vscroll+(Scanline<<1))&((ymask<<1)|1); - ts.nametab+=(ts.line>>4)<reg[11]&4) { - // shit, we have 2-cell column based vscroll - // luckily this doesn't happen too often - ts.line=ymask|(shift[width]<<24); // save some stuff instead of line - DrawStripVSRam(&ts, plane); - } else { - vscroll=Pico.vsram[plane]; // Get vertical scroll value - - // Find the line in the name table - ts.line=(vscroll+Scanline)&ymask; - ts.nametab+=(ts.line>>3)<reg[12]&1) - { - nametab=(pvid->reg[3]&0x3c)<<9; // 40-cell mode - nametab+=(Scanline>>3)<<6; - } - else - { - nametab=(pvid->reg[3]&0x3e)<<9; // 32-cell mode - nametab+=(Scanline>>3)<<5; - } - - tilex=tstart<<1; - tend<<=1; - - ty=(Scanline&7)<<1; // Y-Offset into tile - - if(!(rendstatus&2)) { - // check the first tile code - code=Pico.vram[nametab+tilex]; - // if the whole window uses same priority (what is often the case), we may be able to skip this field - if((code>>15) != prio) return; - } - - // Draw tiles across screen: - for (; tilex < tend; tilex++) - { - int addr=0,zero=0; - int pal; - - code=Pico.vram[nametab+tilex]; - if(code==blank) continue; - if((code>>15) != prio) { - rendstatus|=2; - continue; - } - - pal=((code>>9)&0x30); - - if(sh) { - int tmp, *zb = (int *)(DrawLineInt+8+(tilex<<3)); - if(prio) { - tmp = *zb; - if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000; - if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000; - *zb++=tmp; tmp = *zb; - if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000; - if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000; - *zb++=tmp; - } else { - pal |= 0x40; - } - } - - // Get tile address/2: - addr=(code&0x7ff)<<4; - if (code&0x1000) addr+=14-ty; else addr+=ty; // Y-flip - - if (code&0x0800) zero=TileFlip(8+(tilex<<3),addr,pal); - else zero=TileNorm(8+(tilex<<3),addr,pal); - - if (zero) blank=code; // We know this tile is blank now - } - - // terminate the cache list - //*hcache = 0; -} - -// -------------------------------------------- - -static void DrawTilesFromCache(int *hc, int sh) -{ - int code, addr, zero, dx; - int pal; - short blank=-1; // The tile we know is blank - - // *ts->hc++ = code | (dx<<16) | (ty<<25); // cache it - - while((code=*hc++)) { - if(!sh && (short)code == blank) continue; - - // Get tile address/2: - addr=(code&0x7ff)<<4; - addr+=(unsigned int)code>>25; // y offset into tile - dx=(code>>16)&0x1ff; - if(sh) { - unsigned char *zb = DrawLineInt+dx; - if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++; - if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++; - if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++; - if(!(*zb&0x80)) *zb&=0x3f; zb++; if(!(*zb&0x80)) *zb&=0x3f; zb++; - } - - pal=((code>>9)&0x30); - - if (code&0x0800) zero=TileFlip(dx,addr,pal); - else zero=TileNorm(dx,addr,pal); - - if(zero) blank=(short)code; - } -} - -// -------------------------------------------- - -// Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size -// Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8 - -static void DrawSprite(int *sprite, int **hc, int sh) -{ - int width=0,height=0; - int row=0,code=0; - int pal; - int tile=0,delta=0; - int sx, sy; - int (*fTileFunc)(int sx,int addr,int pal); - - // parse the sprite data - sy=sprite[0]; - code=sprite[1]; - sx=code>>16; // X - width=sy>>28; - height=(sy>>24)&7; // Width and height in tiles - sy=(sy<<16)>>16; // Y - - row=Scanline-sy; // Row of the sprite we are on - - if (code&0x1000) row=(height<<3)-1-row; // Flip Y - - tile=code&0x7ff; // Tile number - tile+=row>>3; // Tile number increases going down - delta=height; // Delta to increase tile by going right - if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X - - tile<<=4; tile+=(row&7)<<1; // Tile address - - if(code&0x8000) { // high priority - cache it - *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>16)&0xf); - } else { - delta<<=4; // Delta of address - pal=((code>>9)&0x30)|(sh<<6); - - if(sh && (code&0x6000) == 0x6000) { - if(code&0x0800) fTileFunc=TileFlipSH; - else fTileFunc=TileNormSH; - } else { - if(code&0x0800) fTileFunc=TileFlip; - else fTileFunc=TileNorm; - } - - for (; width; width--,sx+=8,tile+=delta) - { - if(sx<=0) continue; - if(sx>=328) break; // Offscreen - - tile&=0x7fff; // Clip tile address - fTileFunc(sx,tile,pal); - } - } -} -#endif - - -// Index + 0 : hhhhvvvv s---hhvv yyyyyyyy yyyyyyyy // s: skip flag, h: horiz. size -// Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8 - -static void DrawSpriteZ(int pack, int pack2, int shpri, int sprio) -{ - int width=0,height=0; - int row=0; - int pal; - int tile=0,delta=0; - int sx, sy; - int (*fTileFunc)(int sx,int addr,int pal,int zval); - - // parse the sprite data - sx=pack2>>16; // X - sy=(pack <<16)>>16; // Y - width=pack>>28; - height=(pack>>24)&7; // Width and height in tiles - - row=Scanline-sy; // Row of the sprite we are on - - if (pack2&0x1000) row=(height<<3)-1-row; // Flip Y - - tile=pack2&0x7ff; // Tile number - tile+=row>>3; // Tile number increases going down - delta=height; // Delta to increase tile by going right - if (pack2&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X - - tile<<=4; tile+=(row&7)<<1; // Tile address - delta<<=4; // Delta of address - pal=((pack2>>9)&0x30); - if((shpri&1)&&!(shpri&2)) pal|=0x40; - - shpri&=1; - if((pack2&0x6000) != 0x6000) shpri = 0; - shpri |= (pack2&0x0800)>>10; - switch(shpri) { - default: - case 0: fTileFunc=TileNormZ; break; - case 1: fTileFunc=TileNormZSH; break; - case 2: fTileFunc=TileFlipZ; break; - case 3: fTileFunc=TileFlipZSH; break; - } - - for (; width; width--,sx+=8,tile+=delta) - { - if(sx<=0) continue; - if(sx>=328) break; // Offscreen - - tile&=0x7fff; // Clip tile address - fTileFunc(sx,tile,pal,sprio); - } -} - -static void DrawSpriteInterlace(unsigned int *sprite) -{ - int width=0,height=0; - int row=0,code=0; - int pal; - int tile=0,delta=0; - int sx, sy; - - // parse the sprite data - sy=sprite[0]; - height=sy>>24; - sy=(sy&0x3ff)-0x100; // Y - width=(height>>2)&3; height&=3; - width++; height++; // Width and height in tiles - - row=(Scanline<<1)-sy; // Row of the sprite we are on - - code=sprite[1]; - sx=((code>>16)&0x1ff)-0x78; // X - - if (code&0x1000) row^=(16<>4; // Tile number increases going down - delta=height; // Delta to increase tile by going right - if (code&0x0800) { tile+=delta*(width-1); delta=-delta; } // Flip X - - tile<<=5; tile+=(row&15)<<1; // Tile address - - delta<<=5; // Delta of address - pal=((code>>9)&0x30); // Get palette pointer - - for (; width; width--,sx+=8,tile+=delta) - { - if(sx<=0) continue; - if(sx>=328) break; // Offscreen - - tile&=0x7fff; // Clip tile address - if (code&0x0800) TileFlip(sx,tile,pal); - else TileNorm(sx,tile,pal); - } -} - - -static void DrawAllSpritesInterlace(int pri, int maxwidth) -{ - struct PicoVideo *pvid=&Pico.video; - int i,u,table,link=0,sline=Scanline<<1; - unsigned int *sprites[80]; // Sprite index - - table=pvid->reg[5]&0x7f; - if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode - table<<=8; // Get sprite table address/2 - - for (i=u=0; u < 80 && i < 21; u++) - { - unsigned int *sprite; - int code, sx, sy, height; - - sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite - - // get sprite info - code = sprite[0]; - sx = sprite[1]; - if(((sx>>15)&1) != pri) goto nextsprite; // wrong priority sprite - - // check if it is on this line - sy = (code&0x3ff)-0x100; - height = (((code>>24)&3)+1)<<4; - if(sline < sy || sline >= sy+height) goto nextsprite; // no - - // check if sprite is not hidden offscreen - sx = (sx>>16)&0x1ff; - sx -= 0x78; // Get X coordinate + 8 - if(sx <= -8*3 || sx >= maxwidth) goto nextsprite; - - // sprite is good, save it's pointer - sprites[i++]=sprite; - - nextsprite: - // Find next sprite - link=(code>>16)&0x7f; - if(!link) break; // End of sprites - } - - // Go through sprites backwards: - for (i-- ;i>=0; i--) - DrawSpriteInterlace(sprites[i]); -} - - -#ifndef _ASM_DRAW_C -static void DrawSpritesFromCache(int *hc, int sh) -{ - int code, tile, sx, delta, width; - int pal; - int (*fTileFunc)(int sx,int addr,int pal); - - // *(*hc)++ = (tile<<16)|((code&0x0800)<<5)|((sx<<6)&0x0000ffc0)|((code>>9)&0x30)|((sprite[0]>>24)&0xf); - - while((code=*hc++)) { - pal=(code&0x30); - delta=code&0xf; - width=delta>>2; delta&=3; - width++; delta++; // Width and height in tiles - if (code&0x10000) delta=-delta; // Flip X - delta<<=4; - tile=((unsigned int)code>>17)<<1; - sx=(code<<16)>>22; // sx can be negative (start offscreen), so sign extend - - if(sh && pal == 0x30) { // - if(code&0x10000) fTileFunc=TileFlipSH; - else fTileFunc=TileNormSH; - } else { - if(code&0x10000) fTileFunc=TileFlip; - else fTileFunc=TileNorm; - } - - for (; width; width--,sx+=8,tile+=delta) - { - if(sx<=0) continue; - if(sx>=328) break; // Offscreen - - tile&=0x7fff; // Clip tile address - fTileFunc(sx,tile,pal); - } - } -} -#endif - - -// Index + 0 : ----hhvv -lllllll -------y yyyyyyyy -// Index + 4 : -------x xxxxxxxx pccvhnnn nnnnnnnn -// v -// Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size -// Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8 - -static void PrepareSprites(int full) -{ - struct PicoVideo *pvid=&Pico.video; - int u=0,link=0,sblocks=0; - int table=0; - int *pd = HighPreSpr; - - table=pvid->reg[5]&0x7f; - if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode - table<<=8; // Get sprite table address/2 - - if (!full) - { - int pack; - // updates: tilecode, sx - for (u=0; u < 80 && (pack = *pd); u++, pd+=2) - { - unsigned int *sprite; - int code, code2, sx, sy, skip=0; - - sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite - - // parse sprite info - code = sprite[0]; - code2 = sprite[1]; - code2 &= ~0xfe000000; - code2 -= 0x00780000; // Get X coordinate + 8 in upper 16 bits - sx = code2>>16; - - if((sx <= 8-((pack>>28)<<3) && sx >= -0x76) || sx >= 328) skip=1<<23; - else if ((sy = (pack<<16)>>16) < 240 && sy > -32) { - int sbl = (2<<(pack>>28))-1; - sblocks |= sbl<<(sy>>3); - } - - *pd = (pack&~(1<<23))|skip; - *(pd+1) = code2; - - // Find next sprite - link=(code>>16)&0x7f; - if(!link) break; // End of sprites - } - SpriteBlocks |= sblocks; - } - else - { - for (; u < 80; u++) - { - unsigned int *sprite; - int code, code2, sx, sy, hv, height, width, skip=0, sx_min; - - sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite - - // parse sprite info - code = sprite[0]; - sy = (code&0x1ff)-0x80; - hv = (code>>24)&0xf; - height = (hv&3)+1; - - if(sy > 240 || sy + (height<<3) <= 0) skip|=1<<22; - - width = (hv>>2)+1; - code2 = sprite[1]; - sx = (code2>>16)&0x1ff; - sx -= 0x78; // Get X coordinate + 8 - sx_min = 8-(width<<3); - - if((sx <= sx_min && sx >= -0x76) || sx >= 328) skip|=1<<23; - else if (sx > sx_min && !skip) { - int sbl = (2<>3; - if(shi < 0) shi=0; // negative sy - sblocks |= sbl<>16)&0x7f; - if(!link) break; // End of sprites - } - SpriteBlocks = sblocks; - *pd = 0; // terminate - } -} - -static void DrawAllSprites(int *hcache, int maxwidth, int prio, int sh) -{ - int i,u,n; - int sx1seen=0; // sprite with x coord 1 or 0 seen - int ntiles = 0; // tile counter for sprite limit emulation - int *sprites[40]; // Sprites to draw in fast mode - int *ps, pack, rs = rendstatus, scan=Scanline; - - if(rs&8) { - DrawAllSpritesInterlace(prio, maxwidth); - return; - } - if(rs&0x11) { - //dprintf("PrepareSprites(%i) [%i]", (rs>>4)&1, scan); - PrepareSprites(rs&0x10); - rendstatus=rs&~0x11; - } - if (!(SpriteBlocks & (1<<(scan>>3)))) return; - - if(((rs&4)||sh)&&prio==0) - memset(HighSprZ, 0, 328); - if(!(rs&4)&&prio) { - if(hcache[0]) DrawSpritesFromCache(hcache, sh); - return; - } - - ps = HighPreSpr; - - // Index + 0 : hhhhvvvv ab--hhvv yyyyyyyy yyyyyyyy // a: offscreen h, b: offs. v, h: horiz. size - // Index + 4 : xxxxxxxx xxxxxxxx pccvhnnn nnnnnnnn // x: x coord + 8 - - for(i=u=n=0; (pack = *ps) && n < 20; ps+=2, u++) - { - int sx, sy, row, pack2; - - if(pack & 0x00400000) continue; - - // get sprite info - pack2 = *(ps+1); - sx = pack2>>16; - sy = (pack <<16)>>16; - row = scan-sy; - - //dprintf("x: %i y: %i %ix%i", sx, sy, (pack>>28)<<3, (pack>>21)&0x38); - - if(sx == -0x77) sx1seen|=1; // for masking mode 2 - - // check if it is on this line - if(row < 0 || row >= ((pack>>21)&0x38)) continue; // no - n++; // number of sprites on this line (both visible and hidden, max is 20) [broken] - - // sprite limit - ntiles += pack>>28; - if(ntiles > 40) break; - - if(pack & 0x00800000) continue; - - // masking sprite? - if(sx == -0x78) { - if(!(sx1seen&1) || sx1seen==3) { - break; // this sprite is not drawn and remaining sprites are masked - } - if((sx1seen>>8) == 0) sx1seen=(i+1)<<8; - continue; - } - else if(sx == -0x77) { - // masking mode2 (Outrun, Galaxy Force II, Shadow of the beast) - if(sx1seen>>8) { i=(sx1seen>>8)-1; break; } // seen both 0 and 1 - sx1seen |= 2; - continue; - } - - // accurate sprites - //dprintf("P:%i",((sx>>15)&1)); - if(rs&4) { - // might need to skip this sprite - if((pack2&0x8000) ^ (prio<<15)) continue; - DrawSpriteZ(pack,pack2,sh|(prio<<1),(char)(0x1f-n)); - continue; - } - - // sprite is good, save it's pointer - sprites[i++]=ps; - } - - // Go through sprites backwards: - if(!(rs&4)) { - for (i--; i>=0; i--) - DrawSprite(sprites[i],&hcache,sh); - - // terminate cache list - *hcache = 0; - } -} - - -// -------------------------------------------- - -#ifndef _ASM_DRAW_C -static void BackFill(int reg7, int sh) -{ - unsigned int back=0; - unsigned int *pd=NULL,*end=NULL; - - // Start with a blank scanline (background colour): - back=reg7&0x3f; - back|=sh<<6; - back|=back<<8; - back|=back<<16; - - pd= (unsigned int *)(DrawLineInt+8); - end=(unsigned int *)(DrawLineInt+8+320); - - do { pd[0]=pd[1]=pd[2]=pd[3]=back; pd+=4; } while (pd= 0; i--) - pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x0777); - // hilighted pixels - for(i = 0x3f; i >= 0; i--) { - t=pal[i]&0xeee;t+=0x444;if(t&0x10)t|=0xe;if(t&0x100)t|=0xe0;if(t&0x1000)t|=0xe00;t&=0xeee; - pal[0x80|i]=(unsigned short)t; - } - Pico.m.dirtyPal = 0; - } - } - - for(i = 0; i < len; i++) - pd[i] = pal[ps[i]]; -} - - -static void FinalizeLineRGB555(int sh) -{ - unsigned short *pd=DrawLineDest; - unsigned char *ps=DrawLineInt+8; - unsigned short *pal=HighPal; - int len, i, t, dirtyPal = Pico.m.dirtyPal; - - if(dirtyPal) { - unsigned short *ppal=Pico.cram; - for(i = 0x3f; i >= 0; i--) - pal[i] = (unsigned short) (((ppal[i]&0x00f)<<12)|((ppal[i]&0x0f0)<<3)|((ppal[i]&0xf00)>>7)); - Pico.m.dirtyPal = 0; - } - - if (Pico.video.reg[12]&1) { - len = 320; - } else { - if(!(PicoOpt&0x100)) pd+=32; - len = 256; - } - - if(sh) { - if(dirtyPal) { - // shadowed pixels - for(i = 0x3f; i >= 0; i--) - pal[0x40|i] = pal[0xc0|i] = (unsigned short)((pal[i]>>1)&0x738e); - // hilighted pixels - for(i = 0x3f; i >= 0; i--) { - t=pal[i]&0xe71c;t+=0x4208;if(t&0x20)t|=0x1c;if(t&0x800)t|=0x700;if(t&0x10000)t|=0xe000;t&=0xe71c; - pal[0x80|i]=(unsigned short)t; - } - } - } - - for(i = 0; i < len; i++) - pd[i] = pal[ps[i]]; -} -#endif - -static void FinalizeLine8bit(int sh) -{ - unsigned char *pd=DrawLineDest; - int len, rs = rendstatus; - static int dirty_count; - - if (!sh && Pico.m.dirtyPal && Scanline < 222) { - // a hack for mid-frame palette changes - if (!(rs & 0x20)) - dirty_count = 1; - else dirty_count++; - rs |= 0x20; - rendstatus = rs; - if (dirty_count == 3) { - blockcpy(HighPal, Pico.cram, 0x40*2); - } else if (dirty_count == 11) { - blockcpy(HighPal+0x40, Pico.cram, 0x40*2); - } - } - - if (Pico.video.reg[12]&1) { - len = 320; - } else { - if(!(PicoOpt&0x100)) pd+=32; - len = 256; - } - -/* test - if (!sh && rs & 0x20) { - if (dirty_count >= 11) { - blockcpy_or(pd, HighCol+8, len, 0x80); - } else { - blockcpy_or(pd, HighCol+8, len, 0x40); - } - } else { - blockcpy(pd, HighCol+8, len); - } -*/ -} - -void (*FinalizeLine)(int sh) = FinalizeLineBGR444; - -// -------------------------------------------- - -static int DrawDisplay(int sh) -{ - struct PicoVideo *pvid=&Pico.video; - int win=0,edge=0,hvwind=0; - int maxw, maxcells; - - if(pvid->reg[12]&1) { - maxw = 328; maxcells = 40; - } else { - maxw = 264; maxcells = 32; - } - - // Find out if the window is on this line: - win=pvid->reg[0x12]; - edge=(win&0x1f)<<3; - - if (win&0x80) { if (Scanline>=edge) hvwind=1; } - else { if (Scanline< edge) hvwind=1; } - - if(!hvwind) { // we might have a vertical window here - win=pvid->reg[0x11]; - edge=win&0x1f; - if(win&0x80) { - if(!edge) hvwind=1; - else if(edge < (maxcells>>1)) hvwind=2; - } else { - if(!edge); - else if(edge < (maxcells>>1)) hvwind=2; - else hvwind=1; - } - } - - DrawLayer(1, HighCacheB, maxcells, sh); - if(hvwind == 1) - DrawWindow(0, maxcells>>1, 0, sh); // HighCacheAW - else if(hvwind == 2) { - // ahh, we have vertical window - DrawLayer(0, HighCacheA, (win&0x80) ? edge<<1 : maxcells, sh); - DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh); // HighCacheW - } else - DrawLayer(0, HighCacheA, maxcells, sh); - DrawAllSprites(HighCacheS, maxw, 0, sh); - - if(HighCacheB[0]) DrawTilesFromCache(HighCacheB, sh); - if(hvwind == 1) - DrawWindow(0, maxcells>>1, 1, sh); - else if(hvwind == 2) { - if(HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh); - DrawWindow((win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 1, sh); - } else - if(HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh); - DrawAllSprites(HighCacheS, maxw, 1, sh); - - return 0; -} - - -void PicoFrameStart() -{ - // prepare to do this frame - rendstatus &= 0x40; - rendstatus |= (PicoOpt&0x80)>>5; // accurate sprites - if(rendstatus) - Pico.video.status &= ~0x0020; - else Pico.video.status |= 0x0020; // sprite collision - if((Pico.video.reg[12]&6) == 6) rendstatus |= 8; // interlace mode - - PrepareSprites(1); -} - -static int Skip=0; - -int PicoLine(int scan) -{ - int sh; - if (Skip>0) { Skip--; return 0; } // Skip rendering lines - - if(!(rendstatus&0x40)) - DrawLineInt = DrawLineDest; - - Scanline=scan; - sh=(Pico.video.reg[0xC]&8)>>3; // shadow/hilight? - - // Draw screen: - BackFill(Pico.video.reg[7], sh); - if (Pico.video.reg[1]&0x40) - DrawDisplay(sh); - - FinalizeLine(sh); - //if (SpriteBlocks & (1<<(scan>>3))) for (sh=0; sh < 30; sh++) DrawLineDest[sh] = 0xf; - - Skip=PicoScan(Scanline,DrawLineDest); - - return 0; -} - - -void DrawSetColorFormat(int which) -{ - rendstatus |= 0x40; - DrawLineInt = HighCol; - - if (which == 2) { - rendstatus &= ~0x40; - FinalizeLine = FinalizeLine8bit; - } else if (which == 1) - FinalizeLine = FinalizeLineRGB555; - else - FinalizeLine = FinalizeLineBGR444; -}