diff options
Diffstat (limited to 'src/mame/video/vendetta.c')
-rw-r--r-- | src/mame/video/vendetta.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/mame/video/vendetta.c b/src/mame/video/vendetta.c new file mode 100644 index 00000000000..3941a678eac --- /dev/null +++ b/src/mame/video/vendetta.c @@ -0,0 +1,124 @@ +#include "driver.h" +#include "video/konamiic.h" + + +static int layer_colorbase[3],bg_colorbase,sprite_colorbase; +static int layerpri[3]; + + +/*************************************************************************** + + Callbacks for the K052109 + +***************************************************************************/ + +static void vendetta_tile_callback(int layer,int bank,int *code,int *color,int *flags,int *priority) +{ + *code |= ((*color & 0x03) << 8) | ((*color & 0x30) << 6) | + ((*color & 0x0c) << 10) | (bank << 14); + *color = layer_colorbase[layer] + ((*color & 0xc0) >> 6); +} + +static void esckids_tile_callback(int layer,int bank,int *code,int *color,int *flags,int *priority) +{ + *code |= ((*color & 0x03) << 8) | ((*color & 0x10) << 6) | + ((*color & 0x0c) << 9) | (bank << 13); + *color = layer_colorbase[layer] + ((*color & 0xe0) >> 5); +} + + +/*************************************************************************** + + Callbacks for the K053247 + +***************************************************************************/ + +static void sprite_callback(int *code,int *color,int *priority_mask) +{ + int pri = (*color & 0x03e0) >> 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( vendetta ) +{ + K053251_vh_start(); + + K052109_vh_start(machine,REGION_GFX1,NORMAL_PLANE_ORDER,vendetta_tile_callback); + K053247_vh_start(machine,REGION_GFX2,53,6,NORMAL_PLANE_ORDER,sprite_callback); +} + +VIDEO_START( esckids ) +{ + K053251_vh_start(); + + K052109_vh_start(machine,REGION_GFX1,NORMAL_PLANE_ORDER,esckids_tile_callback); + K053247_vh_start(machine,REGION_GFX2,101,6,NORMAL_PLANE_ORDER,sprite_callback); +} + + + +/*************************************************************************** + + 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( vendetta ) +{ + int layer[3]; + + + bg_colorbase = K053251_get_palette_index(K053251_CI0); + sprite_colorbase = K053251_get_palette_index(K053251_CI1); + layer_colorbase[0] = K053251_get_palette_index(K053251_CI2); + layer_colorbase[1] = K053251_get_palette_index(K053251_CI3); + layer_colorbase[2] = K053251_get_palette_index(K053251_CI4); + + K052109_tilemap_update(); + + layer[0] = 0; + layerpri[0] = K053251_get_priority(K053251_CI2); + layer[1] = 1; + layerpri[1] = K053251_get_priority(K053251_CI3); + layer[2] = 2; + layerpri[2] = K053251_get_priority(K053251_CI4); + + sortlayers(layer,layerpri); + + fillbitmap(priority_bitmap,0,cliprect); + tilemap_draw(bitmap,cliprect,K052109_tilemap[layer[0]],TILEMAP_DRAW_OPAQUE,1); + tilemap_draw(bitmap,cliprect,K052109_tilemap[layer[1]],0,2); + tilemap_draw(bitmap,cliprect,K052109_tilemap[layer[2]],0,4); + + K053247_sprites_draw(machine, bitmap,cliprect); + return 0; +} |