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System: Reuse existing texture/buffers for runahead/rewind

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This commit is contained in:
Connor McLaughlin
2021-01-24 21:12:28 +10:00
parent e01d66d18e
commit 3f96473fb5
4 changed files with 62 additions and 28 deletions
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28
src/core/system.cpp
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@ -2046,13 +2046,17 @@ bool LoadMemoryState(const MemorySaveState& mss)
bool SaveMemoryState(MemorySaveState* mss)
{
mss->state_stream = std::make_unique<GrowableMemoryByteStream>(nullptr, MAX_SAVE_STATE_SIZE);
if (!mss->state_stream)
mss->state_stream = std::make_unique<GrowableMemoryByteStream>(nullptr, MAX_SAVE_STATE_SIZE);
else
mss->state_stream->SeekAbsolute(0);
HostDisplayTexture* host_texture = nullptr;
HostDisplayTexture* host_texture = mss->vram_texture.release();
StateWrapper sw(mss->state_stream.get(), StateWrapper::Mode::Write, SAVE_STATE_VERSION);
if (!DoState(sw, &host_texture, false))
{
Log_ErrorPrint("Failed to create rewind state.");
delete host_texture;
return false;
}
@ -2064,11 +2068,15 @@ bool SaveRewindState()
{
Common::Timer save_timer;
// try to reuse the frontmost slot
const u32 save_slots = g_settings.rewind_save_slots;
while (s_rewind_states.size() >= save_slots)
s_rewind_states.pop_front();
MemorySaveState mss;
while (s_rewind_states.size() >= save_slots)
{
mss = std::move(s_rewind_states.front());
s_rewind_states.pop_front();
}
if (!SaveMemoryState(&mss))
return false;
@ -2141,10 +2149,14 @@ void DoRewind()
void SaveRunaheadState()
{
if (s_runahead_states.size() >= s_runahead_frames)
s_runahead_states.pop_front();
// try to reuse the frontmost slot
MemorySaveState mss;
while (s_runahead_states.size() >= s_runahead_frames)
{
mss = std::move(s_runahead_states.front());
s_runahead_states.pop_front();
}
if (!SaveMemoryState(&mss))
{
Log_ErrorPrint("Failed to save runahead state.");