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more findings (nw)

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This commit is contained in:
David Haywood 2014-06-21 21:07:23 +00:00
parent 8680c7905d
commit 4af38f9c02
1 changed files with 21 additions and 14 deletions
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35
src/mame/video/deco_zoomspr.c
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@ -278,9 +278,9 @@ void deco_zoomspr_device::dragngun_draw_sprites( bitmap_rgb32 &bitmap, const rec
0x01ff - Y block offset
*/
/* Sprite global disable bit */
if (dragngun_sprite_ctrl&0x40000000)
return;
/* Sprite global disable bit - can't be, it's set in lockload calibration menu where the targets are sprites */
// if (dragngun_sprite_ctrl&0x40000000)
// return;
for (offs = 0;offs < 0x800;offs += 8)
{
@ -293,19 +293,21 @@ void deco_zoomspr_device::dragngun_draw_sprites( bitmap_rgb32 &bitmap, const rec
if (!scalex || !scaley) /* Zero pixel size in X or Y - skip block */
continue;
if (spritedata[offs+0]&0x400)
layout_ram = dragngun_sprite_layout_1_ram + ((spritedata[offs+0]&0x1ff)*4); //CHECK!
int layoutram_offset = (spritedata[offs + 0] & 0x1ff) * 4;
if (spritedata[offs + 0] & 0x400)
layout_ram = dragngun_sprite_layout_1_ram;
else
layout_ram = dragngun_sprite_layout_0_ram + ((spritedata[offs+0]&0x1ff)*4); //1ff in drag gun code??
h = (layout_ram[1]>>0)&0xf;
w = (layout_ram[1]>>4)&0xf;
layout_ram = dragngun_sprite_layout_0_ram;
h = (layout_ram[layoutram_offset + 1]>>0)&0xf;
w = (layout_ram[layoutram_offset + 1]>>4)&0xf;
if (!h || !w)
continue;
sx = spritedata[offs+2] & 0x3ff;
sy = spritedata[offs+3] & 0x3ff;
bx = layout_ram[2] & 0x1ff;
by = layout_ram[3] & 0x1ff;
bx = layout_ram[layoutram_offset + 2] & 0x1ff;
by = layout_ram[layoutram_offset + 3] & 0x1ff;
if (bx&0x100) bx=1-(bx&0xff);
if (by&0x100) by=1-(by&0xff); /* '1 - ' is strange, but correct for Dragongun 'Winners' screen. */
if (sx >= 512) sx -= 1024;
@ -333,11 +335,13 @@ void deco_zoomspr_device::dragngun_draw_sprites( bitmap_rgb32 &bitmap, const rec
fx = spritedata[offs+4]&0x8000;
fy = spritedata[offs+5]&0x8000;
int lookupram_offset = layout_ram[layoutram_offset + 0] & 0x1fff;
// if (spritedata[offs+0]&0x400)
if (layout_ram[0]&0x2000)
lookup_ram = dragngun_sprite_lookup_1_ram + (layout_ram[0]&0x1fff);
if (layout_ram[layoutram_offset + 0] & 0x2000)
lookup_ram = dragngun_sprite_lookup_1_ram;
else
lookup_ram = dragngun_sprite_lookup_0_ram + (layout_ram[0]&0x1fff);
lookup_ram = dragngun_sprite_lookup_0_ram;
zoomx=scalex * 0x10000 / (w*16);
zoomy=scaley * 0x10000 / (h*16);
@ -356,7 +360,10 @@ void deco_zoomspr_device::dragngun_draw_sprites( bitmap_rgb32 &bitmap, const rec
for (x=0; x<w; x++) {
int bank,sprite;
sprite = ((*(lookup_ram++))&0x3fff);
sprite = lookup_ram[lookupram_offset];
sprite &= 0x3fff;
lookupram_offset++;
/* High bits of the sprite reference into the sprite control bits for banking */
switch (sprite&0x3000) {