/***************************************************************************
tecmosys video driver
***************************************************************************/
#include "emu.h"
#include "includes/tecmosys.h"
static TILE_GET_INFO( get_bg0tile_info )
{
tecmosys_state *state = machine.driver_data<tecmosys_state>();
SET_TILE_INFO(
1,
state->m_bg0tilemap_ram[2*tile_index+1],
(state->m_bg0tilemap_ram[2*tile_index]&0x3f),
TILE_FLIPYX((state->m_bg0tilemap_ram[2*tile_index]&0xc0)>>6));
}
static TILE_GET_INFO( get_bg1tile_info )
{
tecmosys_state *state = machine.driver_data<tecmosys_state>();
SET_TILE_INFO(
2,
state->m_bg1tilemap_ram[2*tile_index+1],
(state->m_bg1tilemap_ram[2*tile_index]&0x3f),
TILE_FLIPYX((state->m_bg1tilemap_ram[2*tile_index]&0xc0)>>6));
}
static TILE_GET_INFO( get_bg2tile_info )
{
tecmosys_state *state = machine.driver_data<tecmosys_state>();
SET_TILE_INFO(
3,
state->m_bg2tilemap_ram[2*tile_index+1],
(state->m_bg2tilemap_ram[2*tile_index]&0x3f),
TILE_FLIPYX((state->m_bg2tilemap_ram[2*tile_index]&0xc0)>>6));
}
static TILE_GET_INFO( get_fg_tile_info )
{
tecmosys_state *state = machine.driver_data<tecmosys_state>();
SET_TILE_INFO(
0,
state->m_fgtilemap_ram[2*tile_index+1],
(state->m_fgtilemap_ram[2*tile_index]&0x3f),
TILE_FLIPYX((state->m_fgtilemap_ram[2*tile_index]&0xc0)>>6));
}
WRITE16_HANDLER( bg0_tilemap_w )
{
tecmosys_state *state = space->machine().driver_data<tecmosys_state>();
COMBINE_DATA(&state->m_bg0tilemap_ram[offset]);
tilemap_mark_tile_dirty(state->m_bg0tilemap,offset/2);
}
WRITE16_HANDLER( bg1_tilemap_w )
{
tecmosys_state *state = space->machine().driver_data<tecmosys_state>();
COMBINE_DATA(&state->m_bg1tilemap_ram[offset]);
tilemap_mark_tile_dirty(state->m_bg1tilemap,offset/2);
}
WRITE16_HANDLER( bg2_tilemap_w )
{
tecmosys_state *state = space->machine().driver_data<tecmosys_state>();
COMBINE_DATA(&state->m_bg2tilemap_ram[offset]);
tilemap_mark_tile_dirty(state->m_bg2tilemap,offset/2);
}
WRITE16_HANDLER( fg_tilemap_w )
{
tecmosys_state *state = space->machine().driver_data<tecmosys_state>();
COMBINE_DATA(&state->m_fgtilemap_ram[offset]);
tilemap_mark_tile_dirty(state->m_txt_tilemap,offset/2);
}
INLINE void set_color_555(running_machine &machine, pen_t color, int rshift, int gshift, int bshift, UINT16 data)
{
palette_set_color_rgb(machine, color, pal5bit(data >> rshift), pal5bit(data >> gshift), pal5bit(data >> bshift));
}
WRITE16_HANDLER( tilemap_paletteram16_xGGGGGRRRRRBBBBB_word_w )
{
tecmosys_state *state = space->machine().driver_data<tecmosys_state>();
COMBINE_DATA(&state->m_tilemap_paletteram16[offset]);
set_color_555(space->machine(), offset+0x4000, 5, 10, 0, state->m_tilemap_paletteram16[offset]);
}
WRITE16_HANDLER( bg0_tilemap_lineram_w )
{
tecmosys_state *state = space->machine().driver_data<tecmosys_state>();
COMBINE_DATA(&state->m_bg0tilemap_lineram[offset]);
if (data!=0x0000) popmessage("non 0 write to bg0 lineram %04x %04x",offset,data);
}
WRITE16_HANDLER( bg1_tilemap_lineram_w )
{
tecmosys_state *state = space->machine().driver_data<tecmosys_state>();
COMBINE_DATA(&state->m_bg1tilemap_lineram[offset]);
if (data!=0x0000) popmessage("non 0 write to bg1 lineram %04x %04x",offset,data);
}
WRITE16_HANDLER( bg2_tilemap_lineram_w )
{
tecmosys_state *state = space->machine().driver_data<tecmosys_state>();
COMBINE_DATA(&state->m_bg2tilemap_lineram[offset]);
if (data!=0x0000) popmessage("non 0 write to bg2 lineram %04x %04x",offset,data);
}
static void tecmosys_render_sprites_to_bitmap(running_machine &machine, bitmap_t *bitmap, UINT16 extrax, UINT16 extray )
{
tecmosys_state *state = machine.driver_data<tecmosys_state>();
UINT8 *gfxsrc = machine.region ( "gfx1" )->base();
int i;
/* render sprites (with priority information) to temp bitmap */
bitmap_fill(state->m_sprite_bitmap, NULL, 0x0000);
/* there are multiple spritelists in here, to allow for buffering */
for (i=(state->m_spritelist*0x4000)/2;i<((state->m_spritelist+1)*0x4000)/2;i+=8)
{
int xcnt,ycnt;
int drawx, drawy;
UINT16* dstptr;
int x, y;
int address;
int xsize = 16;
int ysize = 16;
int colour;
int flipx, flipy;
int priority;
int zoomx, zoomy;
x = state->m_spriteram[i+0]+386;
y = (state->m_spriteram[i+1]+1);
x-= extrax;
y-= extray;
y&=0x1ff;
x&=0x3ff;
if (x&0x200) x-=0x400;
if (y&0x100) y-=0x200;
address = state->m_spriteram[i+5]| ((state->m_spriteram[i+4]&0x000f)<<16);
address<<=8;
flipx = (state->m_spriteram[i+4]&0x0040)>>6;
flipy = (state->m_spriteram[i+4]&0x0080)>>7; // used by some move effects in tkdensho
zoomx = (state->m_spriteram[i+2] & 0x0fff)>>0; // zoom?
zoomy = (state->m_spriteram[i+3] & 0x0fff)>>0; // zoom?
if ((!zoomx) || (!zoomy)) continue;
ysize = ((state->m_spriteram[i+6] & 0x00ff))*16;
xsize = (((state->m_spriteram[i+6] & 0xff00)>>8))*16;
colour = ((state->m_spriteram[i+4] & 0x3f00))>>8;
priority = ((state->m_spriteram[i+4] & 0x0030))>>4;
if (state->m_spriteram[i+4] & 0x8000) continue;
for (ycnt = 0; ycnt < ysize; ycnt++)
{
int actualycnt = (ycnt * zoomy) >> 8;
int actualysize = (ysize * zoomy) >> 8;
if (flipy) drawy = y + (actualysize-1) - actualycnt;
else drawy = y + actualycnt;
for (xcnt = 0; xcnt < xsize; xcnt++)
{
int actualxcnt = (xcnt * zoomx) >> 8;
int actualxsize = (xsize *zoomx) >> 8;
if (flipx) drawx = x + (actualxsize-1) - actualxcnt;
else drawx = x + actualxcnt;
if ((drawx>=0 && drawx<320) && (drawy>=0 && drawy<240))
{
UINT8 data;
dstptr = BITMAP_ADDR16(state->m_sprite_bitmap, drawy, drawx);
data = (gfxsrc[address]);
if(data) dstptr[0] = (data + (colour*0x100)) | (priority << 14);
}
address++;
}
}
}
}
static void tecmosys_tilemap_copy_to_compose(tecmosys_state *state, UINT16 pri)
{
int y,x;
UINT16 *srcptr;
UINT16 *dstptr;
for (y=0;y<240;y++)
{
srcptr = BITMAP_ADDR16(state->m_tmp_tilemap_renderbitmap, y, 0);
dstptr = BITMAP_ADDR16(state->m_tmp_tilemap_composebitmap, y, 0);
for (x=0;x<320;x++)
{
if ((srcptr[x]&0xf)!=0x0)
dstptr[x] = (srcptr[x]&0x7ff) | pri;
}
}
}
static void tecmosys_do_final_mix(running_machine &machine, bitmap_t* bitmap)
{
tecmosys_state *state = machine.driver_data<tecmosys_state>();
const pen_t *paldata = machine.pens;
int y,x;
UINT16 *srcptr;
UINT16 *srcptr2;
UINT32 *dstptr;
for (y=0;y<240;y++)
{
srcptr = BITMAP_ADDR16(state->m_tmp_tilemap_composebitmap, y, 0);
srcptr2 = BITMAP_ADDR16(state->m_sprite_bitmap, y, 0);
dstptr = BITMAP_ADDR32(bitmap, y, 0);
for (x=0;x<320;x++)
{
UINT16 pri, pri2;
UINT16 penvalue;
UINT16 penvalue2;
UINT32 colour;
UINT32 colour2;
pri = srcptr[x] & 0xc000;
pri2 = srcptr2[x] & 0xc000;
penvalue = state->m_tilemap_paletteram16[srcptr[x]&0x7ff];
colour = paldata[(srcptr[x]&0x7ff) | 0x4000];
if (srcptr2[x]&0x3fff)
{
penvalue2 = machine.generic.paletteram.u16[srcptr2[x]&0x3fff];
colour2 = paldata[srcptr2[x]&0x3fff];
}
else
{
penvalue2 = state->m_tilemap_paletteram16[srcptr[x]&0x7ff];
colour2 = paldata[(srcptr[x]&0x7ff) | 0x4000];
}
if ((penvalue & 0x8000) && (penvalue2 & 0x8000)) // blend
{
int r,g,b;
int r2,g2,b2;
b = (colour & 0x000000ff) >> 0;
g = (colour & 0x0000ff00) >> 8;
r = (colour & 0x00ff0000) >> 16;
b2 = (colour2 & 0x000000ff) >> 0;
g2 = (colour2 & 0x0000ff00) >> 8;
r2 = (colour2 & 0x00ff0000) >> 16;
r = (r + r2) >> 1;
g = (g + g2) >> 1;
b = (b + b2) >> 1;
dstptr[x] = b | (g<<8) | (r<<16);
}
else if (pri2 >= pri)
{
dstptr[x] = colour2;
}
else
{
dstptr[x] = colour;
}
}
}
}
SCREEN_UPDATE(tecmosys)
{
tecmosys_state *state = screen->machine().driver_data<tecmosys_state>();
bitmap_fill(bitmap,cliprect,screen->machine().pens[0x4000]);
tilemap_set_scrolly( state->m_bg0tilemap, 0, state->m_c80000regs[1]+16);
tilemap_set_scrollx( state->m_bg0tilemap, 0, state->m_c80000regs[0]+104);
tilemap_set_scrolly( state->m_bg1tilemap, 0, state->m_a80000regs[1]+17);
tilemap_set_scrollx( state->m_bg1tilemap, 0, state->m_a80000regs[0]+106);
tilemap_set_scrolly( state->m_bg2tilemap, 0, state->m_b00000regs[1]+17);
tilemap_set_scrollx( state->m_bg2tilemap, 0, state->m_b00000regs[0]+106);
bitmap_fill(state->m_tmp_tilemap_composebitmap,cliprect,0);
bitmap_fill(state->m_tmp_tilemap_renderbitmap,cliprect,0);
tilemap_draw(state->m_tmp_tilemap_renderbitmap,cliprect,state->m_bg0tilemap,0,0);
tecmosys_tilemap_copy_to_compose(state, 0x0000);
bitmap_fill(state->m_tmp_tilemap_renderbitmap,cliprect,0);
tilemap_draw(state->m_tmp_tilemap_renderbitmap,cliprect,state->m_bg1tilemap,0,0);
tecmosys_tilemap_copy_to_compose(state, 0x4000);
bitmap_fill(state->m_tmp_tilemap_renderbitmap,cliprect,0);
tilemap_draw(state->m_tmp_tilemap_renderbitmap,cliprect,state->m_bg2tilemap,0,0);
tecmosys_tilemap_copy_to_compose(state, 0x8000);
bitmap_fill(state->m_tmp_tilemap_renderbitmap,cliprect,0);
tilemap_draw(state->m_tmp_tilemap_renderbitmap,cliprect,state->m_txt_tilemap,0,0);
tecmosys_tilemap_copy_to_compose(state, 0xc000);
tecmosys_do_final_mix(screen->machine(), bitmap);
// prepare sprites for NEXT frame - causes 1 frame palette errors, but prevents sprite lag in tkdensho, which is correct?
tecmosys_render_sprites_to_bitmap(screen->machine(), bitmap, state->m_880000regs[0x0], state->m_880000regs[0x1]);
return 0;
}
VIDEO_START(tecmosys)
{
tecmosys_state *state = machine.driver_data<tecmosys_state>();
state->m_sprite_bitmap = auto_bitmap_alloc(machine,320,240,BITMAP_FORMAT_INDEXED16);
bitmap_fill(state->m_sprite_bitmap, NULL, 0x4000);
state->m_tmp_tilemap_composebitmap = auto_bitmap_alloc(machine,320,240,BITMAP_FORMAT_INDEXED16);
state->m_tmp_tilemap_renderbitmap = auto_bitmap_alloc(machine,320,240,BITMAP_FORMAT_INDEXED16);
bitmap_fill(state->m_tmp_tilemap_composebitmap, NULL, 0x0000);
bitmap_fill(state->m_tmp_tilemap_renderbitmap, NULL, 0x0000);
state->m_txt_tilemap = tilemap_create(machine, get_fg_tile_info,tilemap_scan_rows,8,8,32*2,32*2);
tilemap_set_transparent_pen(state->m_txt_tilemap,0);
state->m_bg0tilemap = tilemap_create(machine, get_bg0tile_info,tilemap_scan_rows,16,16,32,32);
tilemap_set_transparent_pen(state->m_bg0tilemap,0);
state->m_bg1tilemap = tilemap_create(machine, get_bg1tile_info,tilemap_scan_rows,16,16,32,32);
tilemap_set_transparent_pen(state->m_bg1tilemap,0);
state->m_bg2tilemap = tilemap_create(machine, get_bg2tile_info,tilemap_scan_rows,16,16,32,32);
tilemap_set_transparent_pen(state->m_bg2tilemap,0);
}