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konamigs.cpp draw lines (nw)

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This commit is contained in:
MetalliC 2019-12-28 07:35:56 +02:00
parent ca8981c003
commit b3dbf43bf5
1 changed files with 47 additions and 11 deletions
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58
src/mame/drivers/konamigs.cpp
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@ -163,10 +163,6 @@ READ64_MEMBER(gsan_state::portc_r)
}
WRITE64_MEMBER(gsan_state::portc_w)
{
#if 0
if (m_portc_data != data)
logerror("PORT_C %02X\n", (u8)data);
#endif
m_portc_data = data;
m_hopper->motor_w(data & 0x80);
machine().bookkeeping().coin_counter_w(0, data & 4);
@ -180,12 +176,9 @@ WRITE64_MEMBER(gsan_state::porte_w)
{
// lamps
#if 0
if ((m_porte_data ^ data) & 0xff)
{
u8 mask = (m_porte_data ^ data) & 0xff;
u8 nval = data & mask;
logerror("PORT_E mask %02X val %02X\n", mask, nval);
}
u8 mask = m_porte_data ^ data;
if (mask)
logerror("PORT_E mask %02X val %02X\n", mask, data & mask);
#endif
m_porte_data = data;
}
@ -372,7 +365,50 @@ void gsan_state::fill_quad(u16 cmd, u16 *data)
void gsan_state::draw_line(u16 cmd, u16 *data)
{
// TODO, test mode only
if (cmd & 0x7ff)
logerror("Q2SD unhandled line mode %04X\n", cmd);
u16 color = *data++;
u16 count = *data++;
while (count > 1)
{
s16 x0 = *data++;
s16 y0 = *data++;
s16 x1 = data[0];
s16 y1 = data[1];
--count;
int dx = abs(x1 - x0);
int dy = -abs(y1 - y0);
int sx = x0 < x1 ? 1 : -1;
int sy = y0 < y1 ? 1 : -1;
int err = dx + dy;
s16 sclipx = m_gpuregs[0x90 / 2];
s16 sclipy = m_gpuregs[0x92 / 2];
u32 fg_offs = (m_gpuregs[0x014 / 2] & 0x7f) << 15;
while (true)
{
if ((x0 >= 0 && x0 <= sclipx) && (y0 >= 0 && y0 <= sclipy))
m_vram[fg_offs + pix_address(x0, y0)] = color;
if (x0 == x1 && y0 == y1)
break;
int e2 = 2 * err;
if (e2 >= dy)
{
err += dy;
x0 += sx;
}
if (e2 <= dx)
{
err += dx;
y0 += sy;
}
}
}
}
u32 gsan_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)