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workaround for all-tiles-hi-priority performance issue

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@237 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-09-02 14:52:01 +00:00
parent bf53765555
commit 740da8c60b
2 changed files with 153 additions and 42 deletions
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95
Pico/Draw.c
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@ -22,8 +22,8 @@ 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
// lsb->msb: moved sprites, not all window tiles use same priority, accurate sprites (copied from PicoOpt), interlace
// dirty sprites, sonic mode, have layer with all hi prio tiles (mk3), layer sh/hi already processed
int rendstatus;
void *DrawLineDest=DefOutBuff; // pointer to dest buffer where to draw this line to
int Scanline=0; // Scanline
@ -316,6 +316,8 @@ static void DrawStrip(struct TileStrip *ts, int sh)
// terminate the cache list
*ts->hc = 0;
// if oldcode wasn't changed, it means all layer is hi priority
if (oldcode == -1) rendstatus|=0x40;
}
// this is messy
@ -381,6 +383,7 @@ void DrawStripVSRam(struct TileStrip *ts, int plane)
// terminate the cache list
*ts->hc = 0;
if (oldcode == -1) rendstatus|=0x40;
}
#endif
@ -578,33 +581,72 @@ static void DrawWindow(int tstart, int tend, int prio, int sh) // int *hcache
static void DrawTilesFromCache(int *hc, int sh)
{
int code, addr, zero, dx;
int code, addr, 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++;
if (sh && (rendstatus&0xc0))
{
if (!(rendstatus&0x80))
{
// as some layer has covered whole line with hi priority tiles,
// we can process whole line and then act as if sh/hi mode was off.
rendstatus|=0x80;
int c = 320/4, *zb = (int *)(HighCol+8);
while (c--)
{
int tmp = *zb;
if (!(tmp & 0x80808080)) *zb=tmp&0x3f3f3f3f;
else {
if(!(tmp&0x00000080)) tmp&=~0x000000c0; if(!(tmp&0x00008000)) tmp&=~0x0000c000;
if(!(tmp&0x00800000)) tmp&=~0x00c00000; if(!(tmp&0x80000000)) tmp&=~0xc0000000;
*zb=tmp;
}
zb++;
}
}
sh = 0;
}
pal=((code>>9)&0x30);
if (sh)
{
while((code=*hc++)) {
unsigned char *zb;
// Get tile address/2:
addr=(code&0x7ff)<<4;
addr+=(unsigned int)code>>25; // y offset into tile
dx=(code>>16)&0x1ff;
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++;
if (code&0x0800) zero=TileFlip(dx,addr,pal);
else zero=TileNorm(dx,addr,pal);
pal=((code>>9)&0x30);
if(zero) blank=(short)code;
if (code&0x0800) TileFlip(dx,addr,pal);
else TileNorm(dx,addr,pal);
}
}
else
{
short blank=-1; // The tile we know is blank
while((code=*hc++)) {
int zero;
if((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;
pal=((code>>9)&0x30);
if (code&0x0800) zero=TileFlip(dx,addr,pal);
else zero=TileNorm(dx,addr,pal);
if(zero) blank=(short)code;
}
}
}
@ -1189,6 +1231,8 @@ static int DrawDisplay(int sh)
int win=0,edge=0,hvwind=0;
int maxw, maxcells;
rendstatus&=~0xc0;
if(pvid->reg[12]&1) {
maxw = 328; maxcells = 40;
} else {
@ -1236,6 +1280,15 @@ static int DrawDisplay(int sh)
if(HighCacheA[0]) DrawTilesFromCache(HighCacheA, sh);
DrawAllSprites(HighCacheS, maxw, 1, sh);
#if 0
{
int *c, a, b;
for (a = 0, c = HighCacheA; *c; c++, a++);
for (b = 0, c = HighCacheB; *c; c++, b++);
printf("%i:%03i: a=%i, b=%i\n", Pico.m.frame_count, Scanline, a, b);
}
#endif
return 0;
}