--- /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;
+ }
+
+ 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 / picodrive.git / blobdiff