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Attempt to calculate actual refresh rate (i.e. a CPU-GPU synced Mhz), no real success. Anybody have any ideas?

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Is there no indication from the game when the screen refresh should occur? No, not what I could find, we currently calculate the refresh rate and m_VBeamPos from the CPU ticks progress. That works perfectly if the CPU and GPU is perfectly synced as in the single core and no-idle skipping mode. So I guess it's possible that the game doesn't indicate when the screen should be refreshed, but rather that the hardware calculate that from the CPU ticks progress. That leaves us with a problem in the dual core and idle skipping modes to calculate a CPU-GPU synced CPU ticks progress.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3447 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
John Peterson
2009-06-15 04:30:02 +00:00
parent 3295ec38eb
commit 5c04af50a4
12 changed files with 242 additions and 78 deletions
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13
Source/Core/AudioCommon/Src/Mixer.cpp
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@ -92,14 +92,16 @@ void CMixer::PushSamples(short *samples, int num_stereo_samples, int core_sample
// Write Other Audio
if (!m_throttle)
return;
return;
// -----------------------------------------------------------------------
// The auto throttle function. This loop will put a ceiling on the CPU MHz.
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
/* This is only needed for non-AX sound, currently directly
streamed and DTK sound. For AX we call SoundStream::Update in
AXTask() for example. */
while (m_queueSize > queue_maxlength / 2) {
while (m_queueSize > queue_maxlength / 2)
{
// Urgh.
if (g_dspInitialize.pEmulatorState) {
if (*g_dspInitialize.pEmulatorState != 0)
@ -108,7 +110,8 @@ void CMixer::PushSamples(short *samples, int num_stereo_samples, int core_sample
soundStream->Update();
Common::SleepCurrentThread(0);
}
// -----------------------------------------------------------------------
push_sync.Enter();
while (num_stereo_samples) {
acc += core_sample_rate;