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Diffstat (limited to 'src/mame/video/xmen.c')
-rw-r--r--src/mame/video/xmen.c258
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);
+
+}
+