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tecmosys: added sprite buffering / list select so that sprites render properly at 60fps, without 'trails'

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(yes I know this is a lot of submits, but maybe some of the new additions will be interested in seeing how a driver develops..)
This commit is contained in:
davidhay 2008-05-31 11:38:14 +00:00
parent e73cabb6ad
commit 33da405e0e
1 changed files with 10 additions and 2 deletions
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12
src/mame/drivers/tecmosys.c
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@ -194,6 +194,7 @@ static UINT16* bg2tilemap_ram;
static UINT16* bg1tilemap_ram; static UINT16* bg1tilemap_ram;
static UINT16* bg0tilemap_ram; static UINT16* bg0tilemap_ram;
static UINT16* fgtilemap_ram; static UINT16* fgtilemap_ram;
static int tecmosys_spritelist;
static MACHINE_RESET( deroon ); static MACHINE_RESET( deroon );
@ -276,12 +277,17 @@ static WRITE16_HANDLER( unk880000_w )
{ {
switch( offset ) switch( offset )
{ {
case 0x08/2:
tecmosys_spritelist = data & 0x3; // which of the 4 spritelists to use (buffering)
break;
case 0x22/2: case 0x22/2:
watchdog_reset( machine ); watchdog_reset( machine );
//logerror( "watchdog_w( %06x, %04x ) @ %06x\n", (offset * 2)+0x880000, data, activecpu_get_pc() );
break; break;
default: default:
//logerror( "unk880000_w( %06x, %04x ) @ %06x\n", (offset * 2)+0x880000, data, activecpu_get_pc() ); logerror( "unk880000_w( %06x, %04x ) @ %06x\n", (offset * 2)+0x880000, data, activecpu_get_pc() );
break; break;
} }
} }
@ -521,9 +527,11 @@ static VIDEO_UPDATE(deroon)
tilemap_mark_all_tiles_dirty(bg0tilemap); tilemap_mark_all_tiles_dirty(bg0tilemap);
tilemap_draw(bitmap,cliprect,bg0tilemap,0,0); tilemap_draw(bitmap,cliprect,bg0tilemap,0,0);
/* there are multiple spritelists in here, to allow for buffering */
for (i=0;i<0x10000/2;i+=8)
for (i=(tecmosys_spritelist*0x4000)/2;i<((tecmosys_spritelist+1)*0x4000)/2;i+=8)
{ {
int xcnt,ycnt; int xcnt,ycnt;
int drawx, drawy; int drawx, drawy;