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overdraw eliminated in AS mode

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@519 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-07-03 22:23:21 +00:00
parent e352c3af64
commit 97a7f774d3
3 changed files with 19 additions and 25 deletions
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25
Pico/Draw.c
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@ -628,7 +628,7 @@ last_cut_tile:
// 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 sh, int as)
static void DrawSprite(int *sprite, int sh)
{
int width=0,height=0;
int row=0,code=0;
@ -657,7 +657,7 @@ static void DrawSprite(int *sprite, int sh, int as)
delta<<=4; // Delta of address
pal=(code>>9)&0x30;
pal|=((sh|as)<<6);
pal|=sh<<6;
if (sh && (code&0x6000) == 0x6000) {
if(code&0x0800) fTileFunc=TileFlipSH_noop;
@ -1085,7 +1085,7 @@ static void DrawAllSprites(int prio, int sh)
{
int rs = rendstatus, scan = DrawScanline;
unsigned char *p;
int cnt, as;
int cnt;
if (rs & (PDRAW_SPRITES_MOVED|PDRAW_DIRTY_SPRITES)) {
//elprintf(EL_STATUS, "PrepareSprites(%i)", (rs>>4)&1);
@ -1097,15 +1097,14 @@ static void DrawAllSprites(int prio, int sh)
if (cnt == 0) return;
p = &HighLnSpr[scan][2];
as = (rs & PDRAW_ACC_SPRITES) ? 1 : 0;
// Go through sprites backwards:
for (cnt--; cnt >= 0; cnt--)
{
int offs;
if ((p[cnt] >> 7) != prio && !as) continue;
if ((p[cnt] >> 7) != prio) continue;
offs = (p[cnt]&0x7f) * 2;
DrawSprite(HighPreSpr + offs, sh, as);
DrawSprite(HighPreSpr + offs, sh);
}
}
@ -1331,7 +1330,7 @@ static int DrawDisplay(int sh, int as)
DrawWindow( (win&0x80) ? edge : 0, (win&0x80) ? maxcells>>1 : edge, 0, sh|as);
} else
DrawLayer(0|((sh|as)<<1), HighCacheA, 0, maxcells);
if ((rendstatus & PDRAW_HAVE_LO_SPR) || as)
if (rendstatus & PDRAW_HAVE_LO_SPR)
DrawAllSpritesLoPri(0, sh);
if (HighCacheB[0]) DrawTilesFromCache(HighCacheB, sh, maxw);
@ -1366,12 +1365,7 @@ PICO_INTERNAL void PicoFrameStart(void)
if (PicoOpt & POPT_ACC_SPRITES)
rendstatus |= PDRAW_ACC_SPRITES;
if ((Pico.video.reg[12]&6) == 6) {
rendstatus |= PDRAW_INTERLACE; // interlace mode
DrawAllSpritesLoPri =
DrawAllSpritesHiPri = DrawAllSpritesInterlace;
}
else if (sh)
if (sh)
{
DrawAllSpritesLoPri = DrawAllSprites;
DrawAllSpritesHiPri = DrawSpritesSHi;
@ -1383,6 +1377,11 @@ PICO_INTERNAL void PicoFrameStart(void)
}
if (rendstatus & PDRAW_ACC_SPRITES)
DrawAllSpritesHiPri = DrawSpritesHiAS;
if ((Pico.video.reg[12]&6) == 6) {
rendstatus |= PDRAW_INTERLACE; // interlace mode
DrawAllSpritesLoPri =
DrawAllSpritesHiPri = DrawAllSpritesInterlace;
}
if (Pico.m.dirtyPal) Pico.m.dirtyPal = 2; // reset dirty if needed