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vdp sprite rendering fixes

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This commit is contained in:
kub 2020-03-01 18:50:55 +01:00
parent c1d5d254e9
commit e7fec045a7
2 changed files with 7 additions and 9 deletions
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14
pico/draw.c
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@ -333,7 +333,7 @@ static void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
}
code=PicoMem.vram[ts->nametab+nametabadd+(tilex&ts->xmask)];
if (code==blank) continue;
if ((code<<16|ty)==blank) continue;
if (code>>15) { // high priority tile
int cval = code | (dx<<16) | (ty<<25);
if(code&0x1000) cval^=7<<26;
@ -353,7 +353,7 @@ static void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
pack = *(unsigned int *)(PicoMem.vram + addr+ty);
if (!pack) {
blank = code;
blank = code<<16|ty;
continue;
}
@ -638,7 +638,7 @@ static void DrawTilesFromCache(int *hc, int sh, int rlim, struct PicoEState *est
{
int blank=-1; // The tile we know is blank
while ((code=*hc++)) {
if (!(code & 0x8000) || (unsigned short)code == blank)
if ((code<<16|code>>25) == blank)
continue;
// Get tile address/2:
addr = (code & 0x7ff) << 4;
@ -646,7 +646,7 @@ static void DrawTilesFromCache(int *hc, int sh, int rlim, struct PicoEState *est
pack = *(unsigned int *)(PicoMem.vram + addr);
if (!pack) {
blank = (unsigned short)code;
blank = code<<16|code>>25;
continue;
}
@ -1026,7 +1026,8 @@ static void DrawSpritesHiAS(unsigned char *sprited, int sh)
delta<<=4; // Delta of address
if (entry+1 == cnt) width = p[entry+1]; // last sprite width limited?
for (; width; width--,sx+=8,tile+=delta)
mp = mb+(sx>>3);
for (m = *mp << 8; width; width--, sx+=8, *mp++ = m, tile+=delta)
{
unsigned int pack;
@ -1090,8 +1091,7 @@ static void DrawSpritesForced(unsigned char *sprited)
delta<<=4; // Delta of address
if (entry+1 == cnt) width = p[entry+1]; // last sprite width limited?
mp = mb+(sx>>3);
for (m = *mp << 8; width; width--, sx+=8, *mp++ = m, tile+=delta)
for (; width; width--,sx+=8,tile+=delta)
{
unsigned int pack;

2
pico/draw_arm.S
View File

@ -796,8 +796,6 @@ DrawTilesFromCache:
bic r4, r1, #0xfe00
add r1, r11, r4 @ r1=pdest
movs r7, r6, lsl #16
bpl .dtfc_loop @ !(code & 0x8000)
cmp r5, r7, lsr #16
beq .dtfc_samecode @ if (code==prevcode)