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fix screen_device::update_now() when drawing partial lines (#5109)

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-screen: Fixed update_now() when drawing partial lines. [Enik Land]

-screen: Fixed pixel-access functions to use the current bitmap. [Enik Land]
This commit is contained in:
enikland2 2019-05-25 18:01:11 -03:00 committed by MooglyGuy
parent 251836ef95
commit 898907380e
1 changed files with 6 additions and 14 deletions
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20
src/emu/screen.cpp
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@ -1151,20 +1151,12 @@ void screen_device::update_now()
// if the line before us was incomplete, we must do it in two pieces
if (m_partial_scan_hpos > 0)
{
if (current_vpos > 1)
{
s32 save_scan = m_partial_scan_hpos;
update_partial(current_vpos - 2);
m_partial_scan_hpos = save_scan;
}
// now finish the previous partial scanline
int scanline = current_vpos - 1;
clip.set(
(std::max)(clip.left(), m_partial_scan_hpos),
(std::min)(clip.right(), current_hpos),
clip.right(),
(std::max)(clip.top(), m_last_partial_scan),
(std::min)(clip.bottom(), scanline));
(std::min)(clip.bottom(), m_last_partial_scan));
// if there's something to draw, do it
if (!clip.empty())
@ -1182,10 +1174,10 @@ void screen_device::update_now()
m_partial_updates_this_frame++;
g_profiler.stop();
m_partial_scan_hpos = 0;
m_last_partial_scan = current_vpos + 1;
m_last_partial_scan++;
}
}
else
if (current_vpos > m_last_partial_scan)
{
update_partial(current_vpos - 1);
}
@ -1257,7 +1249,7 @@ void screen_device::reset_partial_updates()
u32 screen_device::pixel(s32 x, s32 y)
{
screen_bitmap &curbitmap = m_bitmap[m_curtexture];
screen_bitmap &curbitmap = m_bitmap[m_curbitmap];
if (!curbitmap.valid())
return 0;
@ -1297,7 +1289,7 @@ u32 screen_device::pixel(s32 x, s32 y)
void screen_device::pixels(u32 *buffer)
{
screen_bitmap &curbitmap = m_bitmap[m_curtexture];
screen_bitmap &curbitmap = m_bitmap[m_curbitmap];
if (!curbitmap.valid())
return;