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gstriker.cpp: added buffered spriteram (sprites being ahead 2 frames) [Angelo Salese]

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This commit is contained in:
angelosa 2017-08-29 11:05:22 +02:00
parent 3a9849a5b3
commit d3ce43f6a8
4 changed files with 28 additions and 8 deletions
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1
src/mame/drivers/gstriker.cpp
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@ -502,6 +502,7 @@ static MACHINE_CONFIG_START( gstriker )
MCFG_SCREEN_SIZE(64*8, 64*8)
MCFG_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 0*8, 28*8-1)
MCFG_SCREEN_UPDATE_DRIVER(gstriker_state, screen_update)
MCFG_SCREEN_VBLANK_CALLBACK(WRITELINE(gstriker_state, screen_vblank))
MCFG_SCREEN_PALETTE("palette")
MCFG_GFXDECODE_ADD("gfxdecode", "palette", gstriker)

3
src/mame/includes/gstriker.h
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@ -46,6 +46,8 @@ public:
required_device<mb3773_device> m_watchdog;
required_shared_ptr<uint16_t> m_CG10103_m_vram;
std::unique_ptr<uint16_t[]> m_buffered_spriteram;
std::unique_ptr<uint16_t[]> m_buffered_spriteram2;
required_shared_ptr<uint16_t> m_work_ram;
required_shared_ptr<uint16_t> m_mixerregs1;
required_shared_ptr<uint16_t> m_mixerregs2;
@ -76,6 +78,7 @@ public:
DECLARE_DRIVER_INIT(twcup94);
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
DECLARE_WRITE_LINE_MEMBER(screen_vblank);
void mcu_init();
};

23
src/mame/video/gstriker.cpp
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@ -14,6 +14,22 @@ void gstriker_state::video_start()
// Initialize the chip for the screen plane
m_bg->set_transparent_pen(0xf);
m_buffered_spriteram = std::make_unique<uint16_t[]>(0x2000);
m_buffered_spriteram2 = std::make_unique<uint16_t[]>(0x2000);
save_pointer(NAME(m_buffered_spriteram.get()), 0x2000);
save_pointer(NAME(m_buffered_spriteram2.get()), 0x2000);
}
WRITE_LINE_MEMBER(gstriker_state::screen_vblank)
{
// sprites are two frames ahead
// TODO: probably all Video System games are (Aero Fighters definitely desyncs wrt background)
if(state)
{
memcpy(m_buffered_spriteram.get(), m_CG10103_m_vram, 0x2000);
memcpy(m_buffered_spriteram2.get(), m_buffered_spriteram.get(), 0x2000);
}
}
@ -29,15 +45,14 @@ uint32_t gstriker_state::screen_update(screen_device &screen, bitmap_ind16 &bitm
m_tx->set_pal_base( (m_mixerregs1[2]&0xf000)>>8 );
// Sandwitched screen/sprite0/score/sprite1. Surely wrong, probably
// needs sprite orthogonality
// Sandwitched screen/sprite0/score/sprite1. Surely wrong, probably needs sprite orthogonality
m_bg->draw( screen, bitmap,cliprect, 0);
m_spr->draw_sprites(m_CG10103_m_vram, 0x2000, screen, bitmap, cliprect, 0x2, 0x0);
m_spr->draw_sprites(m_buffered_spriteram2.get(), 0x2000, screen, bitmap, cliprect, 0x2, 0x0);
m_tx->draw(screen, bitmap, cliprect, 0);
m_spr->draw_sprites(m_CG10103_m_vram, 0x2000, screen, bitmap, cliprect, 0x2, 0x2);
m_spr->draw_sprites(m_buffered_spriteram2.get(), 0x2000, screen, bitmap, cliprect, 0x2, 0x2);
return 0;
}

1
src/mame/video/mb60553.cpp
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@ -279,6 +279,7 @@ void mb60553_zooming_tilemap_device::draw( screen_device &screen, bitmap_ind16&
incxx = m_lineram[(line)*8+0]<<4;
// startx has an offset based off current x zoom value
// This is confirmed by Tecmo World Cup '94 startx being 0xff40 (-192) when showing footballer pics on attract mode (incxx is 0x800)
// TODO: slightly offset?
xoffset = (float)incxx/(float)0x10000 * 384.0;
startx = m_regs[0] + (uint32_t)xoffset;