+++ /dev/null
-// 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 "../../Pico/PicoInt.h"
-#undef blockcpy
-
-extern unsigned short DefOutBuff[320*2];
-extern unsigned char HighCol[8+320+8];
-extern 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
-extern int rendstatus;
-extern int Scanline; // Scanline
-
-
-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)
-};
-
-// utility
-void *blockcpy(void *dst, const void *src, size_t n)
-{
- return memcpy(dst, src, n);
-}
-
-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);
-}
-
-
-static int TileNorm(int sx,int addr,int pal)
-{
- unsigned char *pd = HighCol+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 = HighCol+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);
-
-static int TileNormSH(int sx,int addr,int pal)
-{
- unsigned int pack=0; unsigned int t=0;
- unsigned char *pd = HighCol+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 = HighCol+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
-}
-
-
-// --------------------------------------------
-
-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;
- }
-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;
-}
-
-static 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;
-}
-
-static 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;
-}
-
-// --------------------------------------------
-
-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<<shift[width])-1; // X Mask in tiles (0x1f-0x7f)
- ymask=(height<<8)|0xff; // Y Mask in pixels
- if(width == 1) ymask&=0x1ff;
- else if(width>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)<<shift[width];
-
- DrawStripInterlace(&ts);
- } else if( pvid->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)<<shift[width];
-
- DrawStrip(&ts, sh);
- }
-}
-
-
-// --------------------------------------------
-
-// tstart & tend are tile pair numbers
-void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
-{
- struct PicoVideo *pvid=&Pico.video;
- int tilex=0,ty=0,nametab,code=0;
- int blank=-1; // The tile we know is blank
-
- // Find name table line:
- if (pvid->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 *)(HighCol+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;
-}
-
-// --------------------------------------------
-
-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 = HighCol+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
-
-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);
- }
- }
-}
-
-
-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);
- }
- }
-}
-
-
-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 *)(HighCol+8);
- end=(unsigned int *)(HighCol+8+320);
-
- do { pd[0]=pd[1]=pd[2]=pd[3]=back; pd+=4; } while (pd<end);
-}
-
-// --------------------------------------------
-
-extern unsigned short HighPal[0x100];
-
-void FinalizeLineBGR444(int sh)
-{
- unsigned short *pd=DrawLineDest;
- unsigned char *ps=HighCol+8;
- unsigned short *pal=Pico.cram;
- int len, i, t;
-
- if (Pico.video.reg[12]&1) {
- len = 320;
- } else {
- if(!(PicoOpt&0x100)) pd+=32;
- len = 256;
- }
-
- if(sh) {
- pal=HighPal;
- if(Pico.m.dirtyPal) {
- blockcpy(pal, Pico.cram, 0x40*2);
- // shadowed pixels
- for(i = 0x3f; i >= 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]];
-}
-
-
-void FinalizeLineRGB555(int sh)
-{
- unsigned short *pd=DrawLineDest;
- unsigned char *ps=HighCol+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]];
-}
-
-
-
notaz.gp2x.de / libpicofe.git / commitdiff