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r9465 Thursday 28th October, 2010 at 14:42:37 UTC by Angelo Salese
[PC-88VA]: Improved sprite drawing routines, shows 'V2h' display

[src/mess/drivers]

pc88va.c

src/mess/drivers/pc88va.c

r9464	r9465
49	49	for(i=0;i<(0x100);i+=(8))
50	50	{
51	51	int xp,yp,sw,md,xsize,ysize,spda,fg_col,bc;
52		int x_i,y_i;
	52	int x_i,y_i,x_s;
	53	int spr_count;
	54	int pen;
53	55
54	56	ysize = (tvram[(offs + i + 0) / 2] & 0xfc00) >> 10;
55	57	sw = (tvram[(offs + i + 0) / 2] & 0x200) >> 9;
r9464	r9465
82	84	xsize = (xsize + 1) * 32;
83	85	ysize = (ysize + 1) * 4;
84	86
	87	if(!(spda & 0x8000)) // correct?
	88	spda *= 2;
	89
	90	spr_count = 0;
	91
85	92	for(y_i=0;y_i<ysize;y_i++)
86	93	{
87		for(x_i=0;x_i<xsize;x_i++)
	94	for(x_i=0;x_i<xsize;x_i+=16)
88	95	{
89		//UINT8 pen;
	96	for(x_s=0;x_s<16;x_s++)
	97	{
	98	pen = (BITSWAP16(tvram[(spda+spr_count) / 2],7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8) >> (15-x_s)) & 1;
90	99
91		// TODO: hook up drawing routines
	100	pen = pen & 1 ? fg_col : (bc) ? 8 : -1;
92	101
93		*BITMAP_ADDR32(bitmap, yp+y_i, xp+x_i) = machine->pens[fg_col];
	102	if(pen != -1) //transparent pen
	103	*BITMAP_ADDR32(bitmap, yp+y_i, xp+x_i+(x_s)) = machine->pens[pen];
	104	}
	105	spr_count+=2;
94	106	}
95	107	}
96	108	}
97		else // 4bpp mode
	109	else // 4bpp mode (UNTESTED)
98	110	{
99	111	xsize = (xsize + 1) * 8;
100	112	ysize = (ysize + 1) * 4;
101		// ...
	113
	114	if(!(spda & 0x8000)) // correct?
	115	spda *= 2;
	116
	117	spr_count = 0;
	118
	119	for(y_i=0;y_i<ysize;y_i++)
	120	{
	121	for(x_i=0;x_i<xsize;x_i+=2)
	122	{
	123	for(x_s=0;x_s<2;x_s++)
	124	{
	125	pen = (BITSWAP16(tvram[(spda+spr_count) / 2],7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8)) >> (16-(x_s*8)) & 0xf;
	126
	127	//if(bc != -1) //transparent pen
	128	*BITMAP_ADDR32(bitmap, yp+y_i, xp+x_i+(x_s)) = machine->pens[pen];
	129	}
	130	spr_count+=2;
	131	}
	132	}
102	133	}
103	134	}
104	135	}

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