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sms, renderer fixes (sprite y wrap, bg in 1st col, mode 1->mode 0)

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kub 2021-10-28 18:48:27 +02:00
parent 63fb265fac
commit 68e7a5c1c0
1 changed files with 11 additions and 9 deletions
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20
pico/mode4.c
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@ -3,7 +3,7 @@
* (C) notaz, 2009-2010
* (C) kub, 2021
*
* currently supports VDP mode 4 (SMS and GG) and mode 2
* currently supports VDP mode 4 (SMS and GG) and mode 2+0 (TMS)
*
* This work is licensed under the terms of MAME license.
* See COPYING file in the top-level directory.
@ -43,7 +43,7 @@ static int CollisionDetect(u8 *mb, u16 sx, unsigned int pack, int zoomed)
}
// invisible overscan area, not tested for collision
mb[0] = mb[33] = 0;
mb[0] = mb[33] = mb[34] = 0;
return col;
}
@ -173,6 +173,8 @@ static void DrawSpritesM4(int scanline)
y = (sat[MEM_LE2(i)] + 1) & 0xff;
if (y == 0xd1 && !((pv->reg[0] & 6) == 6 && (pv->reg[1] & 0x18)))
break;
if (y > 0xe0)
y -= 256;
if (y + h <= scanline || scanline < y)
continue; // not on this line
if (s >= 8) {
@ -295,7 +297,7 @@ static void DrawDisplayM4(int scanline)
if ((pv->reg[0] & 0x20) && (Pico.m.hardware & 0x3) != 0x3) {
// first column masked with background, caculate offset to start of line
dx = (dx&~0x1f) / 4;
ty = 0xe0e0e0e0; // really (pv->reg[7]&0x3f) * 0x01010101, but the looks...
ty = ((pv->reg[7]&0x0f)|0x10) * 0x01010101;
((u32 *)Pico.est.HighCol)[dx+2] = ((u32 *)Pico.est.HighCol)[dx+3] = ty;
}
}
@ -435,7 +437,7 @@ static void DrawSpritesTMS(int scanline)
else if (c) TileNormSprTMS(x, pack, c);
if (!m) m = CollisionDetect(mb, x, pack, zoomed);
}
if((pv->reg[1] & 0x2) && (x+=w) > 0) {
if((pv->reg[1] & 0x2) && (x+=w) > 0 && x < 8+256) {
pack = PicoMem.vramb[MEM_LE2(sprites_addr[s]+0x10)];
if (zoomed && c) TileDoubleSprTMS(x, pack, c);
else if (c) TileNormSprTMS(x, pack, c);
@ -496,11 +498,11 @@ static void DrawDisplayM2(int scanline)
DrawSpritesTMS(scanline);
}
/* Mode 1 */
/* Mode 0 */
/*========*/
/* Draw the background into a scanline; cells, dx, tilex, ty merged to reduce registers */
static void DrawStripM1(const u8 *nametab, const u8 *coltab, const u8 *pattab, int cells_dx, int tilex_ty)
static void DrawStripM0(const u8 *nametab, const u8 *coltab, const u8 *pattab, int cells_dx, int tilex_ty)
{
// Draw tiles across screen:
for (; cells_dx > 0; cells_dx += 8, tilex_ty++, cells_dx -= 0x10000)
@ -516,7 +518,7 @@ static void DrawStripM1(const u8 *nametab, const u8 *coltab, const u8 *pattab, i
}
/* Draw a scanline */
static void DrawDisplayM1(int scanline)
static void DrawDisplayM0(int scanline)
{
struct PicoVideo *pv = &Pico.video;
u8 *nametab, *coltab, *pattab;
@ -538,7 +540,7 @@ static void DrawDisplayM1(int scanline)
// tiles
if (!(pv->debug_p & PVD_KILL_B))
DrawStripM1(nametab, coltab, pattab, dx | (cells << 16), tilex | (scanline << 16));
DrawStripM0(nametab, coltab, pattab, dx | (cells << 16), tilex | (scanline << 16));
// sprites
if (!(pv->debug_p & PVD_KILL_S_LO))
@ -636,7 +638,7 @@ void PicoLineSMS(int line)
if (Pico.video.reg[1] & 0x40) {
if (Pico.video.reg[0] & 0x04) DrawDisplayM4(line);
else if (Pico.video.reg[0] & 0x02) DrawDisplayM2(line);
else DrawDisplayM1(line);
else DrawDisplayM0(line);
}
if (FinalizeLineSMS != NULL)