summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/video/overdriv.cpp
blob: 826d4067d37b65e5339a06974880847f5dd4d095 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
// license:BSD-3-Clause
// copyright-holders:Nicola Salmoria
#include "emu.h"
#include "includes/overdriv.h"

/***************************************************************************

  Callbacks for the K053247

***************************************************************************/

K053246_CB_MEMBER(overdriv_state::sprite_callback)
{
	int pri = (*color & 0xffe0) >> 5;   /* ??????? */
	if (pri)
		*priority_mask = 0x02;
	else
		*priority_mask = 0x00;

	*color = m_sprite_colorbase + (*color & 0x001f);
}


/***************************************************************************

  Callbacks for the K051316

***************************************************************************/

K051316_CB_MEMBER(overdriv_state::zoom_callback_1)
{
	*flags = (*color & 0x40) ? TILE_FLIPX : 0;
	*code |= ((*color & 0x03) << 8);
	*color = m_zoom_colorbase[0] + ((*color & 0x3c) >> 2);
}

K051316_CB_MEMBER(overdriv_state::zoom_callback_2)
{
	*flags = (*color & 0x40) ? TILE_FLIPX : 0;
	*code |= ((*color & 0x03) << 8);
	*color = m_zoom_colorbase[1] + ((*color & 0x3c) >> 2);
}


/***************************************************************************

  Display refresh

***************************************************************************/

uint32_t overdriv_state::screen_update_overdriv(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
	m_sprite_colorbase  = m_k053251->get_palette_index(k053251_device::CI0);
	m_road_colorbase[1] = m_k053251->get_palette_index(k053251_device::CI1);
	m_road_colorbase[0] = m_k053251->get_palette_index(k053251_device::CI2);
	m_zoom_colorbase[1] = m_k053251->get_palette_index(k053251_device::CI3);
	m_zoom_colorbase[0] = m_k053251->get_palette_index(k053251_device::CI4);

	screen.priority().fill(0, cliprect);

	m_k051316_1->zoom_draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
	m_k051316_2->zoom_draw(screen, bitmap, cliprect, 0, 1);

	m_k053246->k053247_sprites_draw( bitmap,cliprect);
	return 0;
}