// license:BSD-3-Clause
// copyright-holders:Takahiro Nogi
/******************************************************************************
Video Hardware for Nichibutsu Mahjong series.
Driver by Takahiro Nogi 2000/06/07 -
******************************************************************************/
#include "emu.h"
#include "includes/pastelg.h"
// pastelg specific methods
uint16_t pastelg_state::blitter_src_addr_r()
{
return m_blitter_src_addr;
}
void pastelg_state::romsel_w(address_space &space, uint8_t data)
{
m_gfxbank = ((data & 0xc0) >> 6);
m_palbank = ((data & 0x10) >> 4);
m_nb1413m3->sndrombank1_w(space, 0, data);
if ((m_gfxbank << 16) > m_blitter_rom.mask())
{
#ifdef MAME_DEBUG
popmessage("GFXROM BANK OVER!!");
#endif
m_gfxbank &= (m_blitter_rom.length() / 0x20000 - 1);
}
}
// threeds specific methods
void threeds_state::romsel_w(uint8_t data)
{
if (data & 0xfc) printf("%02x\n", data);
m_gfxbank = (data & 0x3);
}
void threeds_state::output_w(uint8_t data)
{
m_palbank = ((data & 0x10) >> 4);
}
uint8_t threeds_state::rom_readback_r()
{
return m_blitter_rom[(m_blitter_src_addr | (m_gfxbank << 16)) & 0x3ffff];
}
// common methods
void pastelg_common_state::palette(palette_device &palette) const
{
const uint8_t *color_prom = memregion("proms")->base();
for (int i = 0; i < palette.entries(); i++)
{
int bit0, bit1, bit2, bit3;
bit0 = BIT(color_prom[0], 0);
bit1 = BIT(color_prom[0], 1);
bit2 = BIT(color_prom[0], 2);
bit3 = BIT(color_prom[0], 3);
int const r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
bit0 = BIT(color_prom[0], 4);
bit1 = BIT(color_prom[0], 5);
bit2 = BIT(color_prom[0], 6);
bit3 = BIT(color_prom[0], 7);
int const g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
bit0 = BIT(color_prom[palette.entries()], 0);
bit1 = BIT(color_prom[palette.entries()], 1);
bit2 = BIT(color_prom[palette.entries()], 2);
bit3 = BIT(color_prom[palette.entries()], 3);
int const b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
palette.set_pen_color(i, rgb_t(r, g, b));
color_prom++;
}
}
void pastelg_common_state::blitter_w(offs_t offset, uint8_t data)
{
switch (offset)
{
case 0: m_blitter_src_addr = (m_blitter_src_addr & 0xff00) | data; break;
case 1: m_blitter_src_addr = (m_blitter_src_addr & 0x00ff) | (data << 8); break;
case 2: m_blitter_destx = data; break;
case 3: m_blitter_desty = data; break;
case 4: m_blitter_sizex = data; break;
case 5: m_blitter_sizey = data;
// writing here also starts the blit
gfxdraw();
break;
case 6: m_blitter_direction_x = (data & 0x01) ? 1 : 0;
m_blitter_direction_y = (data & 0x02) ? 1 : 0;
m_flipscreen = (data & 0x04) ? 0 : 1;
m_dispflag = (data & 0x08) ? 0 : 1;
vramflip();
break;
}
}
void pastelg_common_state::vramflip()
{
int width = m_screen->width();
int height = m_screen->height();
if (m_flipscreen == m_flipscreen_old) return;
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
uint8_t color1 = m_videoram[(y * width) + x];
uint8_t color2 = m_videoram[((y ^ 0xff) * width) + (x ^ 0xff)];
m_videoram[(y * width) + x] = color2;
m_videoram[((y ^ 0xff) * width) + (x ^ 0xff)] = color1;
}
}
m_flipscreen_old = m_flipscreen;
}
void pastelg_common_state::blitter_timer_callback(void *ptr, s32 param)
{
m_nb1413m3->busyflag_w(1);
}
void pastelg_common_state::gfxdraw()
{
int width = m_screen->width();
int sizex, sizey;
int incx, incy;
m_nb1413m3->m_busyctr = 0;
int startx = m_blitter_destx + m_blitter_sizex;
int starty = m_blitter_desty + m_blitter_sizey;
if (m_blitter_direction_x)
{
if (m_blitter_sizex & 0x80) sizex = 0xff - m_blitter_sizex;
else sizex = m_blitter_sizex;
incx = 1;
}
else
{
sizex = m_blitter_sizex;
incx = -1;
}
if (m_blitter_direction_y)
{
if (m_blitter_sizey & 0x80) sizey = 0xff - m_blitter_sizey;
else sizey = m_blitter_sizey;
incy = 1;
}
else
{
sizey = m_blitter_sizey;
incy = -1;
}
int gfxaddr = (m_gfxbank << 16) + m_blitter_src_addr;
int readflag = 0;
int count = 0;
int y = starty;
for (int ctry = sizey; ctry >= 0; ctry--)
{
int x = startx;
for (int ctrx = sizex; ctrx >= 0; ctrx--)
{
gfxaddr = (m_gfxbank << 16) + ((m_blitter_src_addr + count));
if (gfxaddr > m_blitter_rom.mask())
{
#ifdef MAME_DEBUG
popmessage("GFXROM ADDRESS OVER!!");
#endif
gfxaddr = 0;
}
uint8_t color = m_blitter_rom[gfxaddr];
int dx = x & 0xff;
int dy = y & 0xff;
if (m_flipscreen)
{
dx ^= 0xff;
dy ^= 0xff;
}
if (!readflag)
{
// 1st, 3rd, 5th, ... read
color = (color & 0x0f);
}
else
{
// 2nd, 4th, 6th, ... read
color = (color & 0xf0) >> 4;
count++;
}
readflag ^= 1;
if (m_clut[color] & 0xf0)
{
if (color)
{
color = ((m_palbank * 0x10) + color);
m_videoram[(dy * width) + dx] = color;
}
}
else
{
if(m_clut[color] != 0)
{
color = ((m_palbank * 0x10) + m_clut[color]);
m_videoram[(dy * width) + dx] = color;
}
}
m_nb1413m3->m_busyctr++;
x += incx;
}
y += incy;
}
m_nb1413m3->busyflag_w(0);
m_blitter_timer->adjust(attotime::from_hz(400000) * m_nb1413m3->m_busyctr);
}
/******************************************************************************
******************************************************************************/
void pastelg_common_state::video_start()
{
int width = m_screen->width();
int height = m_screen->height();
m_videoram = make_unique_clear<uint8_t[]>(width * height);
m_blitter_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(pastelg_state::blitter_timer_callback), this));
save_item(NAME(m_blitter_desty));
save_item(NAME(m_blitter_sizex));
save_item(NAME(m_blitter_sizey));
save_item(NAME(m_blitter_src_addr));
save_item(NAME(m_gfxbank));
save_item(NAME(m_dispflag));
save_item(NAME(m_flipscreen));
save_item(NAME(m_blitter_direction_x));
save_item(NAME(m_blitter_direction_y));
save_item(NAME(m_palbank));
save_pointer(NAME(m_videoram), width*height);
save_item(NAME(m_flipscreen_old));
}
/******************************************************************************
******************************************************************************/
uint32_t pastelg_common_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
if (m_dispflag)
{
int width = screen.width();
int height = screen.height();
for (int y = 0; y < height; y++)
for (int x = 0; x < width; x++)
bitmap.pix16(y, x) = m_videoram[(y * width) + x];
}
else
bitmap.fill(0, cliprect);
return 0;
}