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fix out of bounds priority check

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hap 2015-08-15 03:39:36 +02:00
parent eb1b330bcc
commit 0ceb2f6c8e
1 changed files with 6 additions and 6 deletions
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12
src/mame/video/atarimo.c
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@ -259,12 +259,12 @@ void atari_motion_objects_device::apply_stain(bitmap_ind16 &bitmap, UINT16 *pf,
{ {
const UINT16 START_MARKER = ((4 << PRIORITY_SHIFT) | 2); const UINT16 START_MARKER = ((4 << PRIORITY_SHIFT) | 2);
const UINT16 END_MARKER = ((4 << PRIORITY_SHIFT) | 4); const UINT16 END_MARKER = ((4 << PRIORITY_SHIFT) | 4);
int offnext = 0; bool offnext = false;
for ( ; x < bitmap.width(); x++) for ( ; x < bitmap.width(); x++)
{ {
pf[x] |= 0x400; pf[x] |= 0x400;
if (offnext != 0 && (mo[x] & START_MARKER) != START_MARKER) if (mo[x] == 0xffff || (offnext && (mo[x] & START_MARKER) != START_MARKER))
break; break;
offnext = ((mo[x] & END_MARKER) == END_MARKER); offnext = ((mo[x] & END_MARKER) == END_MARKER);
} }
@ -541,7 +541,7 @@ void atari_motion_objects_device::render_object(bitmap_ind16 &bitmap, const rect
continue; continue;
// draw the sprite // draw the sprite
gfx->transpen_raw(bitmap,cliprect, code, color, hflip, vflip, sx, sy, m_transpen); gfx->transpen_raw(bitmap,cliprect, code, color, hflip, vflip, sx, sy, m_transpen);
mark_dirty(sx, sx + m_tilewidth - 1, sy, sy + m_tileheight - 1); mark_dirty(sx, sx + m_tilewidth - 1, sy, sy + m_tileheight - 1);
} }
} }
@ -570,7 +570,7 @@ void atari_motion_objects_device::render_object(bitmap_ind16 &bitmap, const rect
continue; continue;
// draw the sprite // draw the sprite
gfx->transpen_raw(bitmap,cliprect, code, color, hflip, vflip, sx, sy, m_transpen); gfx->transpen_raw(bitmap,cliprect, code, color, hflip, vflip, sx, sy, m_transpen);
mark_dirty(sx, sx + m_tilewidth - 1, sy, sy + m_tileheight - 1); mark_dirty(sx, sx + m_tilewidth - 1, sy, sy + m_tileheight - 1);
} }
} }
@ -595,8 +595,8 @@ void atari_motion_objects_device::render_object(bitmap_ind16 &bitmap, const rect
atari_motion_objects_device::sprite_parameter::sprite_parameter() atari_motion_objects_device::sprite_parameter::sprite_parameter()
: m_word(0), : m_word(0),
m_shift(0), m_shift(0),
m_mask(0) m_mask(0)
{ {
} }