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r7494 Friday 5th March, 2010 at 07:59:56 UTC by Fabio Priuli
[SNES] drawing routine rewrite, part 2: * improved hires BG drawing and removed some dead code

[src/mame/video]

snes.c

src/mame/video/snes.c

r7493	r7494
108	108	{ (96*32),  (96*32)+32,  (96*32)+64,  (96*32)+96,  (96*32)+128,  (96*32)+160,  (96*32)+192,  (96*32)+224 },
109	109	{ (112*32), (112*32)+32, (112*32)+64, (112*32)+96, (112*32)+128, (112*32)+160, (112*32)+192, (112*32)+224 }
110	110	};
111		/* Scroll tables                             32x32      64x32              32x64              64x64 */
112		static const UINT16 table_hscroll[4][4] = { {0,0,0,0}, {0,0x800,0,0x800}, {0,0,0,0}, {0,0x800,0,0x800} };
113		static const UINT16 table_vscroll[4][4] = { {0,0,0,0}, {0,0,0,0}, {0,0x800,0,0x800}, {0,0x1000,0,0x1000} };
114	111
115	112	struct SCANLINE
116	113	{
117		UINT16 buffer[(SNES_SCR_WIDTH * 2) + 16];
118		UINT8  priority[(SNES_SCR_WIDTH * 2) + 16];
119		UINT8  layer[(SNES_SCR_WIDTH * 2) + 16];
120		UINT8  blend_exception[(SNES_SCR_WIDTH * 2) + 16];
	114	UINT16 buffer[(SNES_SCR_WIDTH * 2)];
	115	UINT8  priority[(SNES_SCR_WIDTH * 2)];
	116	UINT8  layer[(SNES_SCR_WIDTH * 2)];
	117	UINT8  blend_exception[(SNES_SCR_WIDTH * 2)];
121	118	};
122	119
123	120	static struct SCANLINE scanlines[2];
r7493	r7494
602	599	tile_line <<= 1;
603	600
604	601	/* below, only color_planes depends on color_depth */
605		if (tile_size)
	602	if (hires)   /* Hi-Res: 2bpp & 4bpp */
606	603	{
607		snes_draw_tile_x2(screen, color_planes, layer, charaddr + (tile  * 8 * color_planes) + tile_line, ii, priority, hflip, pal, direct_colors, hires);
608		ii += 16;
	604	snes_draw_tile_x2(screen, color_planes, layer, charaddr + (tile  * 8 * color_planes) + tile_line, ii * 2, priority, hflip, pal, direct_colors, hires);
	605	ii += 8;
609	606	}
610	607	else   /* tile_size = 0 */
611	608	{
612		if (hires)   /* Hi-Res: 2bpp & 4bpp */
	609	if (tile_size)
613	610	{
614	611	snes_draw_tile_x2(screen, color_planes, layer, charaddr + (tile  * 8 * color_planes) + tile_line, ii, priority, hflip, pal, direct_colors, hires);
615	612	ii += 16;
r7493	r7494
802	799	return;
803	800	#endif /* SNES_LAYER_DEBUG */
804	801
805		if (snes_ppu.mode == 5 || snes_ppu.mode == 6)
806		widemode = 1;
	802	//   if (snes_ppu.mode == 5 || snes_ppu.mode == 6)
	803	//      widemode = 1;
807	804
808	805	curline /= snes_ppu.interlace;
809	806	curline *= snes_ppu.obj_interlace;
r7493	r7494
1199	1196
1200	1197	for (x = 0; x < SNES_SCR_WIDTH * 2; x += 2)
1201	1198	{
1202		if (snes_ppu.mode != 5 && snes_ppu.mode != 6)
	1199	//         if (snes_ppu.mode != 5 && snes_ppu.mode != 6)
1203	1200	{
1204	1201	int r, g, b;
1205	1202	c = scanline->buffer[x];
r7493	r7494
1229	1226	*BITMAP_ADDR32(bitmap, curline, (x + 1) * 2 + 1) = MAKE_RGB(pal5bit(r), pal5bit(g), pal5bit(b));
1230	1227
1231	1228	}
	1229	#if 0
1232	1230	else
1233	1231	{
1234	1232	int r, g, b;
r7493	r7494
1259	1257
1260	1258	*BITMAP_ADDR32(bitmap, curline, x + 1) = MAKE_RGB(pal5bit(r), pal5bit(g), pal5bit(b));
1261	1259	}
	1260	#endif
1262	1261	}
1263	1262	}
1264	1263

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