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sprite masking fixed according to Lordus expl.

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@414 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-04-05 19:49:15 +00:00
parent f9d3ee9d2f
commit 6c25471008
1 changed files with 11 additions and 19 deletions
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30
Pico/Draw.c
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@ -194,7 +194,7 @@ static int TileNormZ(int sx,int addr,int pal,int zval)
return 1; // Tile blank
}
static int TileFlipZ(int sx,int addr,int pal,int zval)
{
unsigned int pack=0; unsigned int t=0;
@ -1096,8 +1096,6 @@ static void DrawAllSprites(int *hcache, int maxwidth, int prio, int sh)
{
int sx, sy, row, pack2;
elprintf(EL_ANOMALY, "x: %i y: %i %ix%i", pack2>>16, (pack<<16)>>16, (pack>>28)<<3, (pack>>21)&0x38);
if (pack & 0x00400000) continue;
// get sprite info
@ -1106,11 +1104,20 @@ static void DrawAllSprites(int *hcache, int maxwidth, int prio, int sh)
sy = (pack <<16)>>16;
row = scan-sy;
// elprintf(EL_ANOMALY, "x: %4i y: %4i p %i %ix%i", sx, sy, (pack2>>15)&1, (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)
// masking sprite?
if (sx == -0x78) {
if (n > 0) break; // masked
continue;
}
n++; // number of sprites on this line (both visible and hidden, except of x=0)
// sprite limit
ntiles += pack>>28;
@ -1118,21 +1125,6 @@ static void DrawAllSprites(int *hcache, int maxwidth, int prio, int sh)
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 & PDRAW_ACC_SPRITES) {