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Core: Skip duplicate frames when using frame advance

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It used to be the case that frame advance skipped duplicate frames
(i.e. it would take 30 frame advances to get through one second
of emulated time in a 30 fps game), but this broke in 9c5c3c0.
Skipping duplicate frames making TASing less annoying.
This commit is contained in:
JosJuice
2020-04-07 19:37:32 +02:00
parent 1a42355f96
commit 812ad4257c
4 changed files with 54 additions and 28 deletions
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52
Source/Core/Core/HW/VideoInterface.cpp
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@ -24,6 +24,7 @@
#include "Core/HW/ProcessorInterface.h"
#include "Core/HW/SI/SI.h"
#include "Core/HW/SystemTimers.h"
#include "Core/Movie.h"
#include "DiscIO/Enums.h"
@ -816,8 +817,34 @@ static void EndField()
// Run when: When a frame is scanned (progressive/interlace)
void Update(u64 ticks)
{
// If this half-line is at a field boundary, potentially deal with frame-stepping
// and/or update movie state before dealing with anything else
// Movie's frame counter should be updated before actually rendering the frame,
// in case frame counter display is enabled
Movie::FrameUpdate();
// If this half-line is at some boundary of the "active video lines" in either field, we either
// need to (a) send a request to the GPU thread to actually render the XFB, or (b) increment
// the number of frames we've actually drawn
if (s_half_line_count == s_even_field_first_hl)
{
BeginField(FieldType::Even, ticks);
}
else if (s_half_line_count == s_odd_field_first_hl)
{
BeginField(FieldType::Odd, ticks);
}
else if (s_half_line_count == s_even_field_last_hl)
{
EndField();
}
else if (s_half_line_count == s_odd_field_last_hl)
{
EndField();
}
// If this half-line is at a field boundary, deal with updating movie state before potentially
// dealing with SI polls, but after potentially sending a swap request to the GPU thread
if (s_half_line_count == 0 || s_half_line_count == GetHalfLinesPerEvenField())
Core::Callback_NewField();
@ -843,27 +870,6 @@ void Update(u64 ticks)
s_half_line_of_next_si_poll = GetHalfLinesPerEvenField() + num_half_lines_for_si_poll;
}
// If this half-line is at some boundary of the "active video lines" in either field, we either
// need to (a) send a request to the GPU thread to actually render the XFB, or (b) increment
// the number of frames we've actually drawn
if (s_half_line_count == s_even_field_first_hl)
{
BeginField(FieldType::Even, ticks);
}
else if (s_half_line_count == s_odd_field_first_hl)
{
BeginField(FieldType::Odd, ticks);
}
else if (s_half_line_count == s_even_field_last_hl)
{
EndField();
}
else if (s_half_line_count == s_odd_field_last_hl)
{
EndField();
}
// Move to the next half-line and potentially roll-over the count to zero. If we've reached
// the beginning of a new full-line, update the timer