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-rw-r--r--src/mame/video/eprom.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/mame/video/eprom.c b/src/mame/video/eprom.c
index 9e490918765..4a5d96cfc2c 100644
--- a/src/mame/video/eprom.c
+++ b/src/mame/video/eprom.c
@@ -37,6 +37,16 @@ static TILE_GET_INFO( get_playfield_tile_info )
}
+static TILE_GET_INFO( guts_get_playfield_tile_info )
+{
+ UINT16 data1 = atarigen_playfield[tile_index];
+ UINT16 data2 = atarigen_playfield_upper[tile_index] >> 8;
+ int code = data1 & 0x7fff;
+ int color = 0x10 + (data2 & 0x0f);
+ SET_TILE_INFO(2, code, color, (data1 >> 15) & 1);
+}
+
+
/*************************************
*
@@ -95,6 +105,57 @@ VIDEO_START( eprom )
}
+VIDEO_START( guts )
+{
+ static const struct atarimo_desc modesc =
+ {
+ 0, /* index to which gfx system */
+ 1, /* number of motion object banks */
+ 1, /* are the entries linked? */
+ 0, /* are the entries split? */
+ 0, /* render in reverse order? */
+ 0, /* render in swapped X/Y order? */
+ 0, /* does the neighbor bit affect the next object? */
+ 8, /* pixels per SLIP entry (0 for no-slip) */
+ 0, /* pixel offset for SLIPs */
+ 0, /* maximum number of links to visit/scanline (0=all) */
+
+ 0x100, /* base palette entry */
+ 0x100, /* maximum number of colors */
+ 0, /* transparent pen index */
+
+ {{ 0x03ff,0,0,0 }}, /* mask for the link */
+ {{ 0 }}, /* mask for the graphics bank */
+ {{ 0,0x7fff,0,0 }}, /* mask for the code index */
+ {{ 0 }}, /* mask for the upper code index */
+ {{ 0,0,0x000f,0 }}, /* mask for the color */
+ {{ 0,0,0xff80,0 }}, /* mask for the X position */
+ {{ 0,0,0,0xff80 }}, /* mask for the Y position */
+ {{ 0,0,0,0x0070 }}, /* mask for the width, in tiles*/
+ {{ 0,0,0,0x000f }}, /* mask for the height, in tiles */
+ {{ 0,0x8000,0,0 }}, /* mask for the horizontal flip */
+ {{ 0 }}, /* mask for the vertical flip */
+ {{ 0,0,0x0070,0 }}, /* mask for the priority */
+ {{ 0 }}, /* mask for the neighbor */
+ {{ 0 }}, /* mask for absolute coordinates */
+
+ {{ 0 }}, /* mask for the special value */
+ 0, /* resulting value to indicate "special" */
+ 0 /* callback routine for special entries */
+ };
+
+ /* initialize the playfield */
+ atarigen_playfield_tilemap = tilemap_create(guts_get_playfield_tile_info, tilemap_scan_cols, TILEMAP_TYPE_PEN, 8,8, 64,64);
+
+ /* initialize the motion objects */
+ atarimo_init(machine, 0, &modesc);
+
+ /* initialize the alphanumerics */
+ atarigen_alpha_tilemap = tilemap_create(get_alpha_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8,8, 64,32);
+ tilemap_set_transparent_pen(atarigen_alpha_tilemap, 0);
+}
+
+
/*************************************
*
@@ -268,3 +329,69 @@ VIDEO_UPDATE( eprom )
}
return 0;
}
+
+
+VIDEO_UPDATE( guts )
+{
+ struct atarimo_rect_list rectlist;
+ mame_bitmap *mobitmap;
+ int x, y, r;
+
+ /* draw the playfield */
+ tilemap_draw(bitmap, cliprect, atarigen_playfield_tilemap, 0, 0);
+
+ /* draw and merge the MO */
+ mobitmap = atarimo_render(machine, 0, cliprect, &rectlist);
+ for (r = 0; r < rectlist.numrects; r++, rectlist.rect++)
+ for (y = rectlist.rect->min_y; y <= rectlist.rect->max_y; y++)
+ {
+ UINT16 *mo = (UINT16 *)mobitmap->base + mobitmap->rowpixels * y;
+ UINT16 *pf = (UINT16 *)bitmap->base + bitmap->rowpixels * y;
+ for (x = rectlist.rect->min_x; x <= rectlist.rect->max_x; x++)
+ if (mo[x])
+ {
+ int mopriority = (mo[x] >> ATARIMO_PRIORITY_SHIFT) & 7;
+ int pfpriority = (pf[x] >> 5) & 3;
+
+ /* upper bit of MO priority signals special rendering and doesn't draw anything */
+ if (mopriority & 4)
+ continue;
+
+ /* check the priority */
+ if (!(pf[x] & 8) || mopriority >= pfpriority)
+ pf[x] = mo[x] & ATARIMO_DATA_MASK;
+
+ /* don't erase yet -- we need to make another pass later */
+ }
+ }
+
+ /* add the alpha on top */
+ tilemap_draw(bitmap, cliprect, atarigen_alpha_tilemap, 0, 0);
+
+ /* now go back and process the upper bit of MO priority */
+ rectlist.rect -= rectlist.numrects;
+ for (r = 0; r < rectlist.numrects; r++, rectlist.rect++)
+ for (y = rectlist.rect->min_y; y <= rectlist.rect->max_y; y++)
+ {
+ UINT16 *mo = (UINT16 *)mobitmap->base + mobitmap->rowpixels * y;
+ UINT16 *pf = (UINT16 *)bitmap->base + bitmap->rowpixels * y;
+ for (x = rectlist.rect->min_x; x <= rectlist.rect->max_x; x++)
+ if (mo[x])
+ {
+ int mopriority = mo[x] >> ATARIMO_PRIORITY_SHIFT;
+
+ /* upper bit of MO priority might mean palette kludges */
+ if (mopriority & 4)
+ {
+ /* if bit 2 is set, start setting high palette bits */
+ if (mo[x] & 2)
+ thunderj_mark_high_palette(bitmap, pf, mo, x, y);
+ }
+
+ /* erase behind ourselves */
+ mo[x] = 0;
+ }
+ }
+
+ return 0;
+}