UINT32 jchan_state::screen_update_jchan(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int x,y;
UINT16* src1;
UINT16* src2;
UINT16* dst;
UINT16 pixdata1;
UINT16 pixdata2;
bitmap.fill(get_black_pen(machine()), cliprect);
machine().priority_bitmap.fill(0, cliprect);
m_view2_0->kaneko16_prepare(bitmap, cliprect);
for ( int i = 0; i < 8; i++ )
{
m_view2_0->render_tilemap_chip(bitmap,cliprect,i);
}
m_sprite_bitmap_1->fill(0x0000, cliprect);
m_sprite_bitmap_2->fill(0x0000, cliprect);
m_spritegen1->skns_draw_sprites(machine(), *m_sprite_bitmap_1, cliprect, m_sprite_ram32_1, 0x4000, machine().root_device().memregion("gfx1")->base(), machine().root_device().memregion ("gfx1")->bytes(), m_sprite_regs32_1 );
m_spritegen2->skns_draw_sprites(machine(), *m_sprite_bitmap_2, cliprect, m_sprite_ram32_2, 0x4000, machine().root_device().memregion("gfx2")->base(), memregion ("gfx2")->bytes(), m_sprite_regs32_2 );
// ignoring priority bits for now - might use alpha too, check 0x8000 of palette writes
for (y=0;y<240;y++)
{
src1 = &m_sprite_bitmap_1->pix16(y);
src2 = &m_sprite_bitmap_2->pix16(y);
dst = &bitmap.pix16(y);
for (x=0;x<320;x++)
{
pixdata1 = src1[x];
pixdata2 = src2[x];
if (pixdata2 & 0x3fff)
{
dst[x] = (pixdata2 & 0x3fff)|0x4000;
}
if (pixdata1 & 0x3fff)
{
dst[x] = (pixdata1 & 0x3fff)|0x4000;
}
}
}
return 0;
}
UINT32 sandscrp_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
bitmap.fill(0, cliprect);
screen.priority().fill(0, cliprect);
m_view2_0->kaneko16_prepare(bitmap, cliprect);
for ( int i = 0; i < 8; i++ )
{
m_view2_0->render_tilemap_chip(screen,bitmap,cliprect,i);
}
// copy sprite bitmap to screen
m_pandora->update(bitmap, cliprect);
return 0;
}
UINT32 sandscrp_state::screen_update_sandscrp(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
device_t *pandora = machine().device("pandora");
bitmap.fill(0, cliprect);
int i;
machine().priority_bitmap.fill(0, cliprect);
m_view2_0->kaneko16_prepare(bitmap, cliprect);
for ( i = 0; i < 8; i++ )
{
m_view2_0->render_tilemap_chip(bitmap,cliprect,i);
}
// copy sprite bitmap to screen
pandora_update(pandora, bitmap, cliprect);
return 0;
}
