// license:BSD-3-Clause // copyright-holders:Quench, David Haywood /* GP9001 Video Controller */ /*************************************************************************** Functions to emulate the video hardware of some Toaplan games, which use one or more Toaplan L7A0498 GP9001 graphic controllers. The simpler hardware of these games use one GP9001 controller. Next we have games that use two GP9001 controllers, the mixing of the VDPs depends on a PAL on the motherboard. (mixing handled in toaplan2.c) Finally we have games using one GP9001 controller and an additional text tile layer, which has highest priority. This text tile layer appears to have line-scroll support. Some of these games copy the text tile gfx data to RAM from the main CPU ROM, which easily allows for effects to be added to the tiles, by manipulating the text tile gfx data. The tiles are then dynamically decoded from RAM before displaying them. To Do / Unknowns - What do Scroll registers 0Eh and 0Fh really do ???? - Snow Bros 2 sets bit 6 of the sprite X info word during weather world map, and bits 4, 5 and 6 of the sprite X info word during the Rabbit boss screen - reasons are unknown. - Fourth set of scroll registers have been used for Sprite scroll though it may not be correct. For most parts this looks right except for Snow Bros 2 when in the rabbit boss screen (all sprites jump when big green nasty (which is the foreground layer) comes in from the left) - Teki Paki tests video RAM from address 0 past SpriteRAM to $37ff. This seems to be a bug in Teki Paki's vram test routine ! GP9001 Tile RAM format (each tile takes up 32 bits) 0 1 2 3 ---- ---- ---- ---- xxxx xxxx xxxx xxxx = Tile number (0 - FFFFh) ---- ---- -xxx xxxx ---- ---- ---- ---- = Color (0 - 7Fh) ---- ---- ?--- ---- ---- ---- ---- ---- = unknown / unused ---- xxxx ---- ---- ---- ---- ---- ---- = Priority (0 - Fh) ???? ---- ---- ---- ---- ---- ---- ---- = unknown / unused / possible flips Sprites are of varying sizes between 8x8 and 128x128 with any variation in between, in multiples of 8 either way. Here we draw the first 8x8 part of the sprite, then by using the sprite dimensions, we draw the rest of the 8x8 parts to produce the complete sprite. There seems to be sprite buffering - double buffering actually. GP9001 Sprite RAM format (data for each sprite takes up 4 words) 0 ---- ---- ---- --xx = top 2 bits of Sprite number ---- ---- xxxx xx-- = Color (0 - 3Fh) ---- xxxx ---- ---- = Priority (0 - Fh) ---x ---- ---- ---- = Flip X --x- ---- ---- ---- = Flip Y -x-- ---- ---- ---- = Multi-sprite x--- ---- ---- ---- = Show sprite ? 1 xxxx xxxx xxxx xxxx = Sprite number (top two bits in word 0) 2 ---- ---- ---- xxxx = Sprite X size (add 1, then multiply by 8) ---- ---- -??? ---- = unknown - used in Snow Bros. 2 xxxx xxxx x--- ---- = X position 3 ---- ---- ---- xxxx = Sprite Y size (add 1, then multiply by 8) ---- ---- -??? ---- = unknown / unused xxxx xxxx x--- ---- = Y position GP9001 Scroll Registers (hex) : 00 Background scroll X (X flip off) 01 Background scroll Y (Y flip off) 02 Foreground scroll X (X flip off) 03 Foreground scroll Y (Y flip off) 04 Top (text) scroll X (X flip off) 05 Top (text) scroll Y (Y flip off) 06 Sprites scroll X (X flip off) ??? 07 Sprites scroll Y (Y flip off) ??? 0E ??? Initialise Video controller at startup ??? 0F Scroll update complete ??? (Not used in Ghox and V-Five) 80 Background scroll X (X flip on) 81 Background scroll Y (Y flip on) 82 Foreground scroll X (X flip on) 83 Foreground scroll Y (Y flip on) 84 Top (text) scroll X (X flip on) 85 Top (text) scroll Y (Y flip on) 86 Sprites scroll X (X flip on) ??? 87 Sprites scroll Y (Y flip on) ??? 8F Same as 0Fh except flip bit is active Scroll Register 0E writes (Video controller inits ?) from different games: Teki-Paki | Ghox | Knuckle Bash | Truxton 2 | 0003, 0002, 4000 | ????, ????, ???? | 0202, 0203, 4200 | 0003, 0002, 4000 | Dogyuun | Batsugun | 0202, 0203, 4200 | 0202, 0203, 4200 | 1202, 1203, 5200 | 1202, 1203, 5200 | <--- Second video controller Pipi & Bibis | Fix Eight | V-Five | Snow Bros. 2 | 0003, 0002, 4000 | 0202, 0203, 4200 | 0202, 0203, 4200 | 0202, 0203, 4200 | ***************************************************************************/ #include "emu.h" #include "gp9001.h" #include "screen.h" /* Single VDP mixing priority note: Initial thoughts were that 16 levels of priority exist for both sprites and tilemaps, ie GP9001_PRIMASK 0xf However the end of level scene rendered on the first VDP in Batsugun strongly suggests otherwise. Sprites have 'priority' bits of 0x0600 (level 0x6) set Tilemaps have 'priority' bits of 0x7000 (level 0x7) set If a mask of 0xf is used then the tilemaps render above the sprites, which causes the V bonus items near the counters to be invisible (in addition to the English character quote text) using a mask of 0xe causes both priority levels to be equal, allowing the sprites to render above the tilemap. The alternative option of allowing sprites to render a priority level higher than tilemaps breaks at least the 'Welcome to..' screen in Batrider after selecting your character. Batrider Gob-Robo boss however definitely requires SPRITES to still have 16 levels of priority against other sprites, see http://mametesters.org/view.php?id=5832 It is unknown if the current solution breaks anything. The majority of titles don't make extensive use of the priority system. */ static constexpr unsigned GP9001_PRIMASK = 0x000f; static constexpr unsigned GP9001_PRIMASK_TMAPS = 0x000e; // TODO : Wrong; It's possibly lower than 256 at real hardware // Most noticeable at some boss explosion scene in bgaregga static constexpr unsigned MAX_SPRITES = 256; template WRITE16_MEMBER(gp9001vdp_device::tmap_w) { COMBINE_DATA(&m_vram[Layer][offset]); tm[Layer].tmap->mark_tile_dirty(offset/2); } void gp9001vdp_device::map(address_map &map) { map(0x0000, 0x0fff).ram().w(this, FUNC(gp9001vdp_device::tmap_w<0>)).share("vram_0"); map(0x1000, 0x1fff).ram().w(this, FUNC(gp9001vdp_device::tmap_w<1>)).share("vram_1"); map(0x2000, 0x2fff).ram().w(this, FUNC(gp9001vdp_device::tmap_w<2>)).share("vram_2"); map(0x3000, 0x37ff).ram().share("spriteram").mirror(0x0800); // map(0x3800, 0x3fff).ram(); // sprite mirror? } const gfx_layout gp9001vdp_device::tilelayout = { 16,16, /* 16x16 */ RGN_FRAC(1,2), /* Number of tiles */ 4, /* 4 bits per pixel */ { RGN_FRAC(1,2)+8, RGN_FRAC(1,2), 8, 0 }, { STEP8(0,1), STEP8(8*8*2,1) }, { STEP8(0,8*2), STEP8(16*8*2,8*2) }, 16*16*2 }; const gfx_layout gp9001vdp_device::spritelayout = { 8,8, /* 8x8 */ RGN_FRAC(1,2), /* Number of 8x8 sprites */ 4, /* 4 bits per pixel */ { RGN_FRAC(1,2)+8, RGN_FRAC(1,2), 8, 0 }, { STEP8(0,1) }, { STEP8(0,8*2) }, 8*8*2 }; GFXDECODE_MEMBER( gp9001vdp_device::gfxinfo ) GFXDECODE_DEVICE( DEVICE_SELF, 0, tilelayout, 0, 0x1000 ) GFXDECODE_DEVICE( DEVICE_SELF, 0, spritelayout, 0, 0x1000 ) GFXDECODE_END DEFINE_DEVICE_TYPE(GP9001_VDP, gp9001vdp_device, "gp9001vdp", "GP9001 VDP") gp9001vdp_device::gp9001vdp_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, GP9001_VDP, tag, owner, clock) , device_gfx_interface(mconfig, *this, gfxinfo) , device_video_interface(mconfig, *this) , device_memory_interface(mconfig, *this) , m_space_config("gp9001vdp", ENDIANNESS_BIG, 16,14, 0, address_map_constructor(FUNC(gp9001vdp_device::map), this)) , m_vram(*this, "vram_%u", 0) , m_spriteram(*this, "spriteram") , m_vint_out_cb(*this) { } device_memory_interface::space_config_vector gp9001vdp_device::memory_space_config() const { return space_config_vector { std::make_pair(0, &m_space_config) }; } template TILE_GET_INFO_MEMBER(gp9001vdp_device::get_tile_info) { int color, tile_number, attrib; attrib = m_vram[Layer][2*tile_index]; tile_number = get_tile_number(Layer, tile_index); color = attrib & 0x0fff; // 0x0f00 priority, 0x007f colour SET_TILE_INFO_MEMBER(0, tile_number, color, 0); //tileinfo.category = (attrib & 0x0f00) >> 8; } void gp9001vdp_device::create_tilemaps() { tm[2].tmap = &machine().tilemap().create(*this, tilemap_get_info_delegate(FUNC(gp9001vdp_device::get_tile_info<2>),this),TILEMAP_SCAN_ROWS,16,16,32,32); tm[1].tmap = &machine().tilemap().create(*this, tilemap_get_info_delegate(FUNC(gp9001vdp_device::get_tile_info<1>),this),TILEMAP_SCAN_ROWS,16,16,32,32); tm[0].tmap = &machine().tilemap().create(*this, tilemap_get_info_delegate(FUNC(gp9001vdp_device::get_tile_info<0>),this),TILEMAP_SCAN_ROWS,16,16,32,32); tm[2].tmap->set_transparent_pen(0); tm[1].tmap->set_transparent_pen(0); tm[0].tmap->set_transparent_pen(0); } void gp9001vdp_device::device_start() { sp.vram16_buffer = make_unique_clear(SPRITERAM_SIZE/2); create_tilemaps(); m_vint_out_cb.resolve(); m_raise_irq_timer = timer_alloc(TIMER_RAISE_IRQ); save_pointer(NAME(sp.vram16_buffer.get()), SPRITERAM_SIZE/2); save_item(NAME(gp9001_scroll_reg)); save_item(NAME(gp9001_voffs)); for (int i = 0; i < 3; i++) { save_item(NAME(tm[i].scrollx), i); save_item(NAME(tm[i].scrolly), i); save_item(NAME(tm[i].flip), i); } save_item(NAME(sp.scrollx)); save_item(NAME(sp.scrolly)); save_item(NAME(sp.flip)); gfxrom_is_banked = false; gfxrom_bank_dirty = false; save_item(NAME(gfxrom_bank)); // default layer offsets used by all original games tm[0].extra_xoffset.normal = -0x1d6; tm[0].extra_xoffset.flipped = -0x229; tm[0].extra_yoffset.normal = -0x1ef; tm[0].extra_yoffset.flipped = -0x210; tm[1].extra_xoffset.normal = -0x1d8; tm[1].extra_xoffset.flipped = -0x227; tm[1].extra_yoffset.normal = -0x1ef; tm[1].extra_yoffset.flipped = -0x210; tm[2].extra_xoffset.normal = -0x1da; tm[2].extra_xoffset.flipped= -0x225; tm[2].extra_yoffset.normal = -0x1ef; tm[2].extra_yoffset.flipped= -0x210; sp.extra_xoffset.normal = -0x1cc; sp.extra_xoffset.flipped = -0x17b; sp.extra_yoffset.normal = -0x1ef; sp.extra_yoffset.flipped = -0x108; sp.use_sprite_buffer = 1; } void gp9001vdp_device::device_reset() { gp9001_voffs = 0; gp9001_scroll_reg = 0; tm[0].scrollx = tm[0].scrolly = 0; tm[1].scrollx = tm[1].scrolly = 0; tm[2].scrollx = tm[2].scrolly = 0; sp.scrollx = sp.scrolly = 0; tm[0].flip = 0; tm[1].flip = 0; tm[2].flip = 0; sp.flip = 0; init_scroll_regs(); if (!m_vint_out_cb.isnull()) m_vint_out_cb(0); m_raise_irq_timer->adjust(attotime::never); } void gp9001vdp_device::gp9001_voffs_w(uint16_t data, uint16_t mem_mask) { COMBINE_DATA(&gp9001_voffs); } int gp9001vdp_device::gp9001_videoram16_r() { int offs = gp9001_voffs; gp9001_voffs++; return space().read_word(offs*2); } void gp9001vdp_device::gp9001_videoram16_w(uint16_t data, uint16_t mem_mask) { int offs = gp9001_voffs; gp9001_voffs++; space().write_word(offs*2, data, mem_mask); } uint16_t gp9001vdp_device::gp9001_vdpstatus_r() { return ((screen().vpos() + 15) % 262) >= 245; } void gp9001vdp_device::gp9001_scroll_reg_select_w(uint16_t data, uint16_t mem_mask) { if (ACCESSING_BITS_0_7) { gp9001_scroll_reg = data & 0x8f; if (data & 0x70) logerror("Hmmm, selecting unknown LSB video control register (%04x)\n",gp9001_scroll_reg); } else { logerror("Hmmm, selecting unknown MSB video control register (%04x)\n",gp9001_scroll_reg); } } void gp9001vdp_device::tilemaplayer::set_scrollx_and_flip_reg(uint16_t data, uint16_t mem_mask, bool f) { COMBINE_DATA(&scrollx); if (f) { flip |= TILEMAP_FLIPX; tmap->set_scrollx(0, -(scrollx + extra_xoffset.flipped)); } else { flip &= ~TILEMAP_FLIPX; tmap->set_scrollx(0, scrollx + extra_xoffset.normal); } tmap->set_flip(flip); } void gp9001vdp_device::tilemaplayer::set_scrolly_and_flip_reg(uint16_t data, uint16_t mem_mask, bool f) { COMBINE_DATA(&scrolly); if (f) { flip |= TILEMAP_FLIPY; tmap->set_scrolly(0, -(scrolly + extra_yoffset.flipped)); } else { flip &= ~TILEMAP_FLIPY; tmap->set_scrolly(0, scrolly + extra_yoffset.normal); } tmap->set_flip(flip); } void gp9001vdp_device::spritelayer::set_scrollx_and_flip_reg(uint16_t data, uint16_t mem_mask, bool f) { if (f) { data += extra_xoffset.flipped; COMBINE_DATA(&scrollx); if (scrollx & 0x8000) scrollx |= 0xfe00; else scrollx &= 0x1ff; flip |= SPRITE_FLIPX; } else { data += extra_xoffset.normal; COMBINE_DATA(&scrollx); if (scrollx & 0x8000) scrollx |= 0xfe00; else scrollx &= 0x1ff; flip &= ~SPRITE_FLIPX; } } void gp9001vdp_device::spritelayer::set_scrolly_and_flip_reg(uint16_t data, uint16_t mem_mask, bool f) { if (f) { data += extra_yoffset.flipped; COMBINE_DATA(&scrolly); if (scrolly & 0x8000) scrolly |= 0xfe00; else scrolly &= 0x1ff; flip |= SPRITE_FLIPY; } else { data += extra_yoffset.normal; COMBINE_DATA(&scrolly); if (scrolly & 0x8000) scrolly |= 0xfe00; else scrolly &= 0x1ff; flip &= ~SPRITE_FLIPY; } } void gp9001vdp_device::gp9001_scroll_reg_data_w(uint16_t data, uint16_t mem_mask) { /************************************************************************/ /***** layer X and Y flips can be set independently, so emulate it ******/ /************************************************************************/ // writes with 8x set turn on flip for the specified layer / axis int flip = gp9001_scroll_reg & 0x80; switch (gp9001_scroll_reg&0x7f) { case 0x00: tm[0].set_scrollx_and_flip_reg(data, mem_mask, flip); break; case 0x01: tm[0].set_scrolly_and_flip_reg(data, mem_mask, flip); break; case 0x02: tm[1].set_scrollx_and_flip_reg(data, mem_mask, flip); break; case 0x03: tm[1].set_scrolly_and_flip_reg(data, mem_mask, flip); break; case 0x04: tm[2].set_scrollx_and_flip_reg(data, mem_mask, flip); break; case 0x05: tm[2].set_scrolly_and_flip_reg(data, mem_mask, flip); break; case 0x06: sp.set_scrollx_and_flip_reg(data, mem_mask, flip); break; case 0x07: sp.set_scrolly_and_flip_reg(data, mem_mask, flip); break; case 0x0e: /******* Initialise video controller register ? *******/ case 0x0f: if (!m_vint_out_cb.isnull()) m_vint_out_cb(0); break; default: logerror("Hmmm, writing %08x to unknown video control register (%08x) !!!\n",data,gp9001_scroll_reg); break; } } void gp9001vdp_device::init_scroll_regs() { tm[0].set_scrollx_and_flip_reg(0, 0xffff, 0); tm[0].set_scrolly_and_flip_reg(0, 0xffff, 0); tm[1].set_scrollx_and_flip_reg(0, 0xffff, 0); tm[1].set_scrolly_and_flip_reg(0, 0xffff, 0); tm[2].set_scrollx_and_flip_reg(0, 0xffff, 0); tm[2].set_scrolly_and_flip_reg(0, 0xffff, 0); sp.set_scrollx_and_flip_reg(0, 0xffff, 0); sp.set_scrolly_and_flip_reg(0, 0xffff, 0); } READ16_MEMBER(gp9001vdp_device::gp9001_vdp_r) { switch (offset & (0xc/2)) { case 0x04/2: return gp9001_videoram16_r(); case 0x0c/2: return gp9001_vdpstatus_r(); default: logerror("gp9001_vdp_r: read from unhandled offset %04x\n",offset*2); } return 0xffff; } WRITE16_MEMBER(gp9001vdp_device::gp9001_vdp_w) { switch (offset & (0xc/2)) { case 0x00/2: gp9001_voffs_w(data, mem_mask); break; case 0x04/2: gp9001_videoram16_w(data, mem_mask); break; case 0x08/2: gp9001_scroll_reg_select_w(data, mem_mask); break; case 0x0c/2: gp9001_scroll_reg_data_w(data, mem_mask); break; } } /* batrider and bbakraid invert the register select lines */ READ16_MEMBER(gp9001vdp_device::gp9001_vdp_alt_r) { switch (offset & (0xc/2)) { case 0x0/2: return gp9001_vdpstatus_r(); case 0x8/2: return gp9001_videoram16_r(); default: logerror("gp9001_vdp_alt_r: read from unhandled offset %04x\n",offset*2); } return 0xffff; } WRITE16_MEMBER(gp9001vdp_device::gp9001_vdp_alt_w) { switch (offset & (0xc/2)) { case 0x0/2: gp9001_scroll_reg_data_w(data, mem_mask); break; case 0x4/2: gp9001_scroll_reg_select_w(data, mem_mask); break; case 0x8/2: gp9001_videoram16_w(data, mem_mask); break; case 0xc/2: gp9001_voffs_w(data, mem_mask); break; } } /***************************************************************************/ /**************** PIPIBIBI bootleg interface into this video driver ********/ WRITE16_MEMBER(gp9001vdp_device::pipibibi_bootleg_scroll_w) { if (ACCESSING_BITS_8_15 && ACCESSING_BITS_0_7) { switch(offset) { case 0x00: data -= 0x01f; break; case 0x01: data += 0x1ef; break; case 0x02: data -= 0x01d; break; case 0x03: data += 0x1ef; break; case 0x04: data -= 0x01b; break; case 0x05: data += 0x1ef; break; case 0x06: data += 0x1d4; break; case 0x07: data += 0x1f7; break; default: logerror("PIPIBIBI writing %04x to unknown scroll register %04x",data, offset); } gp9001_scroll_reg = offset; gp9001_scroll_reg_data_w(data, mem_mask); } } READ16_MEMBER(gp9001vdp_device::pipibibi_bootleg_videoram16_r) { gp9001_voffs_w(offset, 0xffff); return gp9001_videoram16_r(); } WRITE16_MEMBER(gp9001vdp_device::pipibibi_bootleg_videoram16_w) { gp9001_voffs_w(offset, 0xffff); gp9001_videoram16_w(data, mem_mask); } READ16_MEMBER(gp9001vdp_device::pipibibi_bootleg_spriteram16_r) { gp9001_voffs_w((0x1800 + offset), 0); return gp9001_videoram16_r(); } WRITE16_MEMBER(gp9001vdp_device::pipibibi_bootleg_spriteram16_w) { gp9001_voffs_w((0x1800 + offset), mem_mask); gp9001_videoram16_w(data, mem_mask); } /*************************************************************************** Blanking Signal Polling ***************************************************************************/ READ_LINE_MEMBER(gp9001vdp_device::hsync_r) { int hpos = screen().hpos(); // active low output return (hpos > 325) && (hpos < 380) ? 0 : 1; } READ_LINE_MEMBER(gp9001vdp_device::vsync_r) { int vpos = screen().vpos(); // active low output return (vpos >= 232) && (vpos <= 245) ? 0 : 1; } READ_LINE_MEMBER(gp9001vdp_device::fblank_r) { // ?? Dogyuun is too slow if this is wrong return (hsync_r() == 0 || vsync_r() == 0) ? 0 : 1; } /*************************************************************************** Sprite Handlers ***************************************************************************/ void gp9001vdp_device::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect, const uint8_t* primap ) { uint16_t *source; if (sp.use_sprite_buffer) source = sp.vram16_buffer.get(); else source = &m_spriteram[0]; int total_elements = gfx(1)->elements(); int total_colors = gfx(1)->colors(); int old_x = (-(sp.scrollx)) & 0x1ff; int old_y = (-(sp.scrolly)) & 0x1ff; for (int offs = 0; offs < (MAX_SPRITES * 4); offs += 4) { int attrib, sprite, color, priority, flipx, flipy, sx, sy; int sprite_sizex, sprite_sizey, dim_x, dim_y, sx_base, sy_base; int bank, sprite_num; attrib = source[offs]; priority = primap[(attrib>>8) & GP9001_PRIMASK]+1; if ((attrib & 0x8000)) { if (!gfxrom_is_banked) /* No Sprite select bank switching needed */ { sprite = ((attrib & 3) << 16) | source[offs + 1]; /* 18 bit */ } else /* Batrider Sprite select bank switching required */ { sprite_num = source[offs + 1] & 0x7fff; bank = ((attrib & 3) << 1) | (source[offs + 1] >> 15); sprite = (gfxrom_bank[bank] << 15 ) | sprite_num; } color = (attrib >> 2) & 0x3f; /***** find out sprite size *****/ sprite_sizex = ((source[offs + 2] & 0x0f) + 1) * 8; sprite_sizey = ((source[offs + 3] & 0x0f) + 1) * 8; /***** find position to display sprite *****/ if (!(attrib & 0x4000)) { sx_base = ((source[offs + 2] >> 7) - (sp.scrollx)) & 0x1ff; sy_base = ((source[offs + 3] >> 7) - (sp.scrolly)) & 0x1ff; } else { sx_base = (old_x + (source[offs + 2] >> 7)) & 0x1ff; sy_base = (old_y + (source[offs + 3] >> 7)) & 0x1ff; } old_x = sx_base; old_y = sy_base; flipx = attrib & SPRITE_FLIPX; flipy = attrib & SPRITE_FLIPY; if (flipx) { /***** Wrap sprite position around *****/ sx_base -= 7; if (sx_base >= 0x1c0) sx_base -= 0x200; } else { if (sx_base >= 0x180) sx_base -= 0x200; } if (flipy) { sy_base -= 7; if (sy_base >= 0x1c0) sy_base -= 0x200; } else { if (sy_base >= 0x180) sy_base -= 0x200; } /***** Flip the sprite layer in any active X or Y flip *****/ if (sp.flip) { if (sp.flip & SPRITE_FLIPX) sx_base = 320 - sx_base; if (sp.flip & SPRITE_FLIPY) sy_base = 240 - sy_base; } /***** Cancel flip, if it, and sprite layer flip are active *****/ flipx = (flipx ^ (sp.flip & SPRITE_FLIPX)); flipy = (flipy ^ (sp.flip & SPRITE_FLIPY)); /***** Draw the complete sprites using the dimension info *****/ for (dim_y = 0; dim_y < sprite_sizey; dim_y += 8) { if (flipy) sy = sy_base - dim_y; else sy = sy_base + dim_y; for (dim_x = 0; dim_x < sprite_sizex; dim_x += 8) { if (flipx) sx = sx_base - dim_x; else sx = sx_base + dim_x; /* gfx->transpen_raw(bitmap,cliprect,sprite, color << 4, flipx,flipy, sx,sy,0); */ sprite %= total_elements; color %= total_colors; const pen_t *paldata = &palette().pen(color * 16); { int yy, xx; const uint8_t* srcdata = gfx(1)->get_data(sprite); int count = 0; int ystart, yend, yinc; int xstart, xend, xinc; if (flipy) { ystart = 7; yend = -1; yinc = -1; } else { ystart = 0; yend = 8; yinc = 1; } if (flipx) { xstart = 7; xend = -1; xinc = -1; } else { xstart = 0; xend = 8; xinc = 1; } for (yy=ystart;yy!=yend;yy+=yinc) { int drawyy = yy+sy; for (xx=xstart;xx!=xend;xx+=xinc) { int drawxx = xx+sx; if (cliprect.contains(drawxx, drawyy)) { uint8_t pix = srcdata[count]; uint16_t* dstptr = &bitmap.pix16(drawyy, drawxx); uint8_t* dstpri = &this->custom_priority_bitmap->pix8(drawyy, drawxx); if (priority >= dstpri[0]) { if (pix&0xf) { dstptr[0] = paldata[pix]; dstpri[0] = priority; } } } count++; } } } sprite++ ; } } } } } /*************************************************************************** Draw the game screen in the given bitmap_ind16. ***************************************************************************/ void gp9001vdp_device::gp9001_draw_custom_tilemap( bitmap_ind16 &bitmap, int layer, const uint8_t* priremap, const uint8_t* pri_enable ) { tilemap_t* tilemap = tm[layer].tmap; int width = screen().width(); int height = screen().height(); int y,x; bitmap_ind16 &tmb = tilemap->pixmap(); uint16_t* srcptr; uint16_t* dstptr; uint8_t* dstpriptr; int scrollx = tilemap->scrollx(0); int scrolly = tilemap->scrolly(0); for (y=0;ycustom_priority_bitmap->pix8(y); for (x=0;x>12) & GP9001_PRIMASK_TMAPS); if (pri_enable[pixpri]) { pixpri = priremap[pixpri]+1; // priority of 0 isn't desireable pixdat &=0x07ff; if (pixdat&0xf) { if (pixpri >= dstpriptr[x]) { dstptr[x] = pixdat; dstpriptr[x] = pixpri; } } } } } } static const uint8_t gp9001_primap1[16] = { 0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, 0x18, 0x1c, 0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38, 0x3c }; //static const uint8_t gp9001_sprprimap1[16] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f }; static const uint8_t gp9001_sprprimap1[16] = { 0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, 0x18, 0x1c, 0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38, 0x3c }; static const uint8_t batsugun_prienable0[16]={ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; void gp9001vdp_device::gp9001_render_vdp(bitmap_ind16 &bitmap, const rectangle &cliprect) { if (gfxrom_is_banked && gfxrom_bank_dirty) { for (int i = 0; i < 3; i++) tm[i].tmap->mark_all_dirty(); gfxrom_bank_dirty = false; } gp9001_draw_custom_tilemap(bitmap, 0, gp9001_primap1, batsugun_prienable0); gp9001_draw_custom_tilemap(bitmap, 1, gp9001_primap1, batsugun_prienable0); gp9001_draw_custom_tilemap(bitmap, 2, gp9001_primap1, batsugun_prienable0); draw_sprites(bitmap,cliprect, gp9001_sprprimap1); } void gp9001vdp_device::gp9001_screen_eof(void) { /** Shift sprite RAM buffers *** Used to fix sprite lag **/ if (sp.use_sprite_buffer) memcpy(sp.vram16_buffer.get(),m_spriteram,SPRITERAM_SIZE); // the IRQ appears to fire at line 0xe6 if (!m_vint_out_cb.isnull()) m_raise_irq_timer->adjust(screen().time_until_pos(0xe6)); } void gp9001vdp_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) { switch (id) { case TIMER_RAISE_IRQ: m_vint_out_cb(1); break; default: assert_always(false, "Unknown id in gp9001vdp_device::device_timer"); } }