diff options
Diffstat (limited to 'src/mame/video/xmen.c')
-rw-r--r-- | src/mame/video/xmen.c | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/src/mame/video/xmen.c b/src/mame/video/xmen.c new file mode 100644 index 00000000000..f7e8e9cb488 --- /dev/null +++ b/src/mame/video/xmen.c @@ -0,0 +1,258 @@ +#include "driver.h" +#include "video/konamiic.h" + + +static int layer_colorbase[3],sprite_colorbase,bg_colorbase; +static int layerpri[3]; + + +/*************************************************************************** + + Callbacks for the K052109 + +***************************************************************************/ + +static void xmen_tile_callback(int layer,int bank,int *code,int *color,int *flags,int *priority) +{ + /* (color & 0x02) is flip y handled internally by the 052109 */ + if (layer == 0) + *color = layer_colorbase[layer] + ((*color & 0xf0) >> 4); + else + *color = layer_colorbase[layer] + ((*color & 0x7c) >> 2); +} + +/*************************************************************************** + + Callbacks for the K053247 + +***************************************************************************/ + +static void xmen_sprite_callback(int *code,int *color,int *priority_mask) +{ + int pri = (*color & 0x00e0) >> 4; /* ??????? */ + if (pri <= layerpri[2]) *priority_mask = 0; + else if (pri > layerpri[2] && pri <= layerpri[1]) *priority_mask = 0xf0; + else if (pri > layerpri[1] && pri <= layerpri[0]) *priority_mask = 0xf0|0xcc; + else *priority_mask = 0xf0|0xcc|0xaa; + + *color = sprite_colorbase + (*color & 0x001f); +} + + + +/*************************************************************************** + + Start the video hardware emulation. + +***************************************************************************/ + +VIDEO_START( xmen ) +{ + K053251_vh_start(); + + K052109_vh_start(machine,REGION_GFX1,NORMAL_PLANE_ORDER,xmen_tile_callback); + K053247_vh_start(machine,REGION_GFX2,53,-2,NORMAL_PLANE_ORDER,xmen_sprite_callback); +} + +static mame_bitmap * screen_right; +static mame_bitmap * screen_left; +static UINT16 *K053247_ram; + +VIDEO_START( xmen6p ) +{ + K053251_vh_start(); + + K052109_vh_start(machine,REGION_GFX1,NORMAL_PLANE_ORDER,xmen_tile_callback); + K053247_vh_start(machine,REGION_GFX2,53,-2,NORMAL_PLANE_ORDER,xmen_sprite_callback); + K053247_export_config(&K053247_ram, NULL, NULL, NULL, NULL); + + screen_left = auto_bitmap_alloc(64*8, 32*8, BITMAP_FORMAT_INDEXED16); + screen_right = auto_bitmap_alloc(64*8, 32*8, BITMAP_FORMAT_INDEXED16); +} + + +/*************************************************************************** + + Display refresh + +***************************************************************************/ + +/* useful function to sort the three tile layers by priority order */ +static void sortlayers(int *layer,int *pri) +{ +#define SWAP(a,b) \ + if (pri[a] < pri[b]) \ + { \ + int t; \ + t = pri[a]; pri[a] = pri[b]; pri[b] = t; \ + t = layer[a]; layer[a] = layer[b]; layer[b] = t; \ + } + + SWAP(0,1) + SWAP(0,2) + SWAP(1,2) +} + + +VIDEO_UPDATE( xmen ) +{ + int layer[3]; + + + bg_colorbase = K053251_get_palette_index(K053251_CI4); + sprite_colorbase = K053251_get_palette_index(K053251_CI1); + layer_colorbase[0] = K053251_get_palette_index(K053251_CI3); + layer_colorbase[1] = K053251_get_palette_index(K053251_CI0); + layer_colorbase[2] = K053251_get_palette_index(K053251_CI2); + + K052109_tilemap_update(); + + layer[0] = 0; + layerpri[0] = K053251_get_priority(K053251_CI3); + layer[1] = 1; + layerpri[1] = K053251_get_priority(K053251_CI0); + layer[2] = 2; + layerpri[2] = K053251_get_priority(K053251_CI2); + + sortlayers(layer,layerpri); + + fillbitmap(priority_bitmap,0,cliprect); + /* note the '+1' in the background color!!! */ + fillbitmap(bitmap,machine->pens[16 * bg_colorbase+1],cliprect); + tilemap_draw(bitmap,cliprect,K052109_tilemap[layer[0]],0,1); + tilemap_draw(bitmap,cliprect,K052109_tilemap[layer[1]],0,2); + tilemap_draw(bitmap,cliprect,K052109_tilemap[layer[2]],0,4); + + pdrawgfx_shadow_lowpri = 1; /* fix shadows of boulders in front of feet */ + K053247_sprites_draw(machine, bitmap,cliprect); + return 0; +} + +extern UINT16 xmen_current_frame; +extern UINT16*xmen6p_spriteramleft; +extern UINT16*xmen6p_spriteramright; +extern UINT16*xmen6p_tilemapleft; +extern UINT16*xmen6p_tilemapright; +extern WRITE8_HANDLER( K052109_w ); + + + +VIDEO_UPDATE( xmen6p ) +{ + int x,y; + /* update every other frame ...help prevent screens lagging (although it still does..).. + but maybe the hw has its own buffering hence the extra ram */ +// if (xmen_current_frame&0x8000) /* actually don't bother */ + { + + for(y=0;y<32*8;y++) + { + UINT16* line_dest = BITMAP_ADDR16(bitmap, y, 0); + UINT16* line_src; + + if (screen==0) line_src = BITMAP_ADDR16(screen_left, y, 0); + else line_src = BITMAP_ADDR16(screen_right, y, 0); + + for (x=12*8;x<52*8;x++) + { + line_dest[x] = line_src[x]; + } + } + } + return 0; +} + +/* my lefts and rights are mixed up in several places.. */ +VIDEO_EOF( xmen6p ) +{ + int layer[3]; + mame_bitmap * renderbitmap; + rectangle cliprect; + int offset; + + xmen_current_frame ^=0x8000; + +// cliprect.min_x = machine->screen[0].visarea.min_x; +// cliprect.max_x = machine->screen[0].visarea.max_x; +// cliprect.min_y = machine->screen[0].visarea.min_y; +// cliprect.max_y = machine->screen[0].visarea.max_y; + + cliprect.min_x = 0; + cliprect.max_x = 64*8-1; + cliprect.min_y = 2*8; + cliprect.max_y = 30*8-1; + + + + + if (xmen_current_frame&0x8000) + { + + /* copy the desired spritelist to the chip */ + memcpy(K053247_ram,xmen6p_spriteramright,0x1000); + /* we write the entire content of the tileram to the chip to ensure + everything gets marked as dirty and the desired tilemap is rendered + + this is not very efficient! + */ + for (offset=0;offset<(0xc000/2);offset++) + { +// K052109_lsb_w + K052109_w(offset,xmen6p_tilemapright[offset]&0x00ff); + } + + + renderbitmap = screen_right; + } + else + { + /* copy the desired spritelist to the chip */ + memcpy(K053247_ram,xmen6p_spriteramleft,0x1000); + + /* we write the entire content of the tileram to the chip to ensure + everything gets marked as dirty and the desired tilemap is rendered + + this is not very efficient! + */ + for (offset=0;offset<(0xc000/2);offset++) + { +// K052109_lsb_w + K052109_w(offset,xmen6p_tilemapleft[offset]&0x00ff); + } + + + + + renderbitmap = screen_left; + } + + + bg_colorbase = K053251_get_palette_index(K053251_CI4); + sprite_colorbase = K053251_get_palette_index(K053251_CI1); + layer_colorbase[0] = K053251_get_palette_index(K053251_CI3); + layer_colorbase[1] = K053251_get_palette_index(K053251_CI0); + layer_colorbase[2] = K053251_get_palette_index(K053251_CI2); + + K052109_tilemap_update(); + + layer[0] = 0; + layerpri[0] = K053251_get_priority(K053251_CI3); + layer[1] = 1; + layerpri[1] = K053251_get_priority(K053251_CI0); + layer[2] = 2; + layerpri[2] = K053251_get_priority(K053251_CI2); + + sortlayers(layer,layerpri); + + fillbitmap(priority_bitmap,0,&cliprect); + /* note the '+1' in the background color!!! */ + fillbitmap(renderbitmap,machine->pens[16 * bg_colorbase+1],&cliprect); + tilemap_draw(renderbitmap,&cliprect,K052109_tilemap[layer[0]],0,1); + tilemap_draw(renderbitmap,&cliprect,K052109_tilemap[layer[1]],0,2); + tilemap_draw(renderbitmap,&cliprect,K052109_tilemap[layer[2]],0,4); + + pdrawgfx_shadow_lowpri = 1; /* fix shadows of boulders in front of feet */ + K053247_sprites_draw(machine, renderbitmap,&cliprect); + +} + |