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This commit is contained in:
DavidHaywood 2018-12-02 02:16:59 +00:00
parent 60d3caf6e9
commit 4b076a839d
2 changed files with 49 additions and 51 deletions
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7
src/mame/includes/seta2.h
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@ -149,9 +149,14 @@ private:
void drawgfx_line(bitmap_ind16 &bitmap, const rectangle &cliprect, int gfx, const uint8_t* const addr, const uint32_t realcolor, int flipx, int flipy, int base_sx, int shadow, int realline, int line, int opaque);
inline void get_tile(uint16_t* spriteram, int is_16x16, int x, int y, int page, int& code, int& attr, int& flipx, int& flipy, int& color);
uint32 m_realtilenumber[0x80000];
std::unique_ptr<uint32_t[]> m_realtilenumber;
gfx_element *m_spritegfx;
uint16_t m_rasterposition;
uint16_t m_rasterenabled;
TIMER_CALLBACK_MEMBER(raster_timer_done);
emu_timer *m_raster_timer;
};

93
src/mame/video/seta2.cpp
View File

@ -151,10 +151,20 @@ WRITE16_MEMBER(seta2_state::vregs_w)
case 0x30: // BLANK SCREEN (pzlbowl, myangel)
if (data & ~1) logerror("CPU #0 PC %06X: blank unknown bits %04X\n",m_maincpu->pc(),data);
break;
case 0x3c: // Raster IRQ related
//logerror("%s: Register 3c write (raster enable?) %04X (%04x)\n",machine().describe_context(),data, mem_mask);
COMBINE_DATA(&m_rasterenabled);
if (m_rasterenabled & 1) m_raster_timer->adjust(m_screen->time_until_pos((m_rasterposition&0x1ff)+0x80, 0), 0);
break;
case 0x3e: // Raster IRQ related
//logerror("%s: Register 3e write (raster position?) %04X (%04x)\n",machine().describe_context(),data, mem_mask);
COMBINE_DATA(&m_rasterposition);
break;
}
}
/***************************************************************************
@ -163,61 +173,36 @@ WRITE16_MEMBER(seta2_state::vregs_w)
***************************************************************************/
inline void seta2_state::drawgfx_line(bitmap_ind16 &bitmap, const rectangle &cliprect, int which_gfx, const uint8_t* const addr, const uint32_t realcolor, int flipx, int flipy, int base_sx, int use_shadow, int realline, int line, int opaque)
{
const uint8_t* const source = flipy ? addr + (7 - line) * 8 : addr + line * 8;
// Color depth
int shadow = 0;
int gfx_mask = 0xff;
int gfx_shift = 0;
switch (which_gfx & 0x0700)
struct drawmodes
{
case 0x0700: // 8bpp tiles (76543210)
shadow = 8; // ?
gfx_mask = 0xff;
gfx_shift = 0;
break;
case 0x0600: // 6bpp tiles (--543210) (myangel sliding blocks test)
shadow = 5; // staraudi
gfx_mask = 0x3f;
gfx_shift = 0;
break;
case 0x0500: // 4bpp tiles (3210----)
shadow = 4; // ?
gfx_mask = 0xf0;
gfx_shift = 4;
break;
case 0x0400: // 4bpp tiles (----3210)
shadow = 3; // reelquak
gfx_mask = 0x0f;
gfx_shift = 0;
break;
case 0x0300: // ??? (staraudi question bubble: pen %00011000 with shadow on!)
gfx_mask = 0xff; // unknown
gfx_shift = 0;
break;
case 0x0200: // 3bpp tiles? (-----210) (myangel "Graduate Tests")
shadow = 3; // ?
gfx_mask = 0x07;
gfx_shift = 0;
break;
case 0x0100: // 2bpp tiles??? (--10----) (myangel2 question bubble, myangel endgame)
shadow = 2; // myangel2
gfx_mask = 0x30;
gfx_shift = 4;
break;
case 0x0000: // no idea!
shadow = 4; // ?
gfx_mask = 0xff;
gfx_shift = 0;
break;
}
int gfx_mask;
int gfx_shift;
int shadow;
};
// this is the same logic as ssv.cpp, although this has more known cases, but also some bugs with the handling
static constexpr drawmodes BPP_MASK_TABLE[8] = {
{ 0xff, 0, 4 }, // 0: ultrax, twineag2 text - is there a local / global mixup somewhere, or is this an 'invalid' setting that just enables all planes?
{ 0x30, 4, 2 }, // 1: unverified case, mimic old driver behavior of only using lowest bit (myangel2 question bubble, myangel endgame)
{ 0x07, 0, 3 }, // 2: unverified case, mimic old driver behavior of only using lowest bit (myangel "Graduate Tests")
{ 0xff, 0, 0 }, // 3: unverified case, mimic old driver behavior of only using lowest bit (staraudi question bubble: pen %00011000 with shadow on!)
{ 0x0f, 0, 3 }, // 4: eagle shot 4bpp birdie text
{ 0xf0, 4, 4 }, // 5: eagle shot 4bpp japanese text
{ 0x3f, 0, 5 }, // 6: common 6bpp case + keithlcy (logo), drifto94 (wheels) masking ) (myangel sliding blocks test)
{ 0xff, 0, 8 }, // 7: common 8bpp case
};
int shadow = BPP_MASK_TABLE[(which_gfx & 0x0700)>>8].shadow;
int gfx_mask = BPP_MASK_TABLE[(which_gfx & 0x0700)>>8].gfx_mask;
int gfx_shift = BPP_MASK_TABLE[(which_gfx & 0x0700)>>8].gfx_shift;
if (!use_shadow)
shadow = 0;
const uint8_t* const source = flipy ? addr + (7 - line) * 8 : addr + line * 8;
uint16_t* dest = &bitmap.pix16(realline);
@ -432,6 +417,11 @@ void seta2_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect)
}
TIMER_CALLBACK_MEMBER(seta2_state::raster_timer_done)
{
}
/***************************************************************************
@ -450,12 +440,15 @@ void seta2_state::video_start()
m_xoffset = 0;
m_yoffset = 0;
m_realtilenumber = std::make_unique<uint32_t[]>(0x80000);
m_spritegfx = m_gfxdecode->gfx(0);
for (int i = 0; i < 0x80000; i++)
{
m_realtilenumber[i] = i % m_spritegfx->elements();
}
m_raster_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(seta2_state::raster_timer_done), this));
}
VIDEO_START_MEMBER(seta2_state,xoffset)