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Fixfreq: Don't process hsyncs while we are vsyncing. Fixes video jitter/jumps.

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This commit is contained in:
Couriersud 2013-12-18 13:10:33 +00:00
parent 42731038af
commit 062545017f
1 changed files with 5 additions and 7 deletions
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12
src/emu/video/fixfreq.c
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@ -145,7 +145,7 @@ void fixedfreq_device::recompute_parameters(bool postload)
/* sync separator */
m_int_trig = (exp(- 3.0/(3.0+3.0))) - exp(-1.0);
m_mult = (double) (m_monitor_clock) / m_htotal; // / (3.0 + 3.0);
m_mult = (double) (m_monitor_clock) / (double) m_htotal * 1.0; // / (3.0 + 3.0);
VERBOSE_OUT(("trigger %f with len %f\n", m_int_trig, 1e6 / m_mult));
m_bitmap[0] = auto_bitmap_rgb32_alloc(machine(),m_htotal, m_vtotal);
@ -183,8 +183,8 @@ int fixedfreq_device::sync_separator(attotime time, double newval)
int last_comp = m_sig_composite;
int ret = 0;
m_vint += ((double) m_sig_composite - m_vint) * (1.0 - exp(-time.as_double() * m_mult));
m_sig_composite = (newval < m_sync_threshold) ? 1 : 0 ;
m_vint += ((double) last_comp - m_vint) * (1.0 - exp(-time.as_double() * m_mult));
m_sig_composite = (newval < m_sync_threshold) ? 1 : 0 ;
m_sig_vsync = (m_vint > m_int_trig) ? 1 : 0;
@ -234,6 +234,7 @@ void fixedfreq_device::update_vid(double newval, attotime cur_time)
if (m_last_y < bm->height())
{
rgb_t col;
if (m_vid < m_sync_threshold)
col = MAKE_RGB(255, 0, 0);
else
@ -242,8 +243,6 @@ void fixedfreq_device::update_vid(double newval, attotime cur_time)
col = MAKE_RGB(colv, colv, colv);
}
if (m_vid < m_sync_threshold)
while (0 && pixels >= m_htotal)
{
bm->plot_box(m_last_x, m_last_y + m_sig_field, m_htotal - 1 - m_last_x, 1, col);
@ -265,7 +264,6 @@ void fixedfreq_device::update_vid(double newval, attotime cur_time)
{
VERBOSE_OUT(("HSYNC down %f %d %f\n", time.as_double()* 1e6, pixels, m_vid));
}
//VERBOSE_OUT(("%d\n", m_last_x);
if (sync & 1)
{
@ -276,7 +274,7 @@ void fixedfreq_device::update_vid(double newval, attotime cur_time)
m_last_vsync_time = cur_time;
}
if (sync & 2)
if ((sync & 2) && !m_sig_vsync)
{
m_last_y += m_fieldcount;
m_last_x = 0;