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pull in project-slippi/Ishiiruka/commit/923195dd5f662a5e65f85b10162fe14b1f0cd57a

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This commit is contained in:
Nikhil Narayana 2022-05-30 09:26:12 -07:00
commit d5723669de
4 changed files with 186 additions and 80 deletions
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151
Source/Core/Core/HW/EXI/EXI_DeviceSlippi.cpp
View file

@ -1532,7 +1532,8 @@ void CEXISlippi::handleOnlineInputs(u8* payload)
{
m_read_queue.clear();
int32_t frame = payload[0] << 24 | payload[1] << 16 | payload[2] << 8 | payload[3];
s32 frame = Common::swap32(&payload[0]);
s32 finalizedFrame = Common::swap32(&payload[4]);
if (frame == 1)
{
@ -1571,19 +1572,25 @@ void CEXISlippi::handleOnlineInputs(u8* payload)
return;
}
if (shouldSkipOnlineFrame(frame))
// Drop inputs that we no longer need (inputs older than the finalized frame passed in)
slippi_netplay->DropOldRemoteInputs(finalizedFrame);
bool shouldSkip = shouldSkipOnlineFrame(frame, finalizedFrame);
if (shouldSkip)
{
// Send inputs that have not yet been acked
slippi_netplay->SendSlippiPad(nullptr);
m_read_queue.push_back(2);
return;
}
else
{
// Send the input for this frame along with everything that has yet to be acked
handleSendInputs(payload);
}
handleSendInputs(payload);
prepareOpponentInputs(payload);
prepareOpponentInputs(frame, shouldSkip);
}
bool CEXISlippi::shouldSkipOnlineFrame(s32 frame)
bool CEXISlippi::shouldSkipOnlineFrame(s32 frame, s32 finalizedFrame)
{
auto status = slippi_netplay->GetSlippiConnectStatus();
bool connectionFailed =
@ -1603,8 +1610,16 @@ bool CEXISlippi::shouldSkipOnlineFrame(s32 frame)
// Return true if we are too far ahead for rollback. ROLLBACK_MAX_FRAMES is the number of frames
// we can receive for the opponent at one time and is our "look-ahead" limit
int32_t latestRemoteFrame = slippi_netplay->GetSlippiLatestRemoteFrame();
if (frame - latestRemoteFrame >= ROLLBACK_MAX_FRAMES)
// Example: finalizedFrame = 100 means the last savestate we need is 101. We can then store
// states 101 to 107 before running out of savestates. So 107 - 100 = 7. We need to make sure
// we have enough inputs to finalize to not overflow the available states, so if our latest frame
// is 101, we can't let frame 109 be created. 101 - 100 >= 109 - 100 - 7 : 1 >= 2 (false).
// It has to work this way because we only have room to move our states forward by one for frame
// 108
s32 latestRemoteFrame = slippi_netplay->GetSlippiLatestRemoteFrame(ROLLBACK_MAX_FRAMES);
auto hasEnoughNewInputs =
latestRemoteFrame - finalizedFrame >= (frame - finalizedFrame - ROLLBACK_MAX_FRAMES);
if (!hasEnoughNewInputs)
{
stallFrameCount++;
if (stallFrameCount > 60 * 7)
@ -1613,16 +1628,19 @@ bool CEXISlippi::shouldSkipOnlineFrame(s32 frame)
isConnectionStalled = true;
}
WARN_LOG(SLIPPI_ONLINE,
"Halting for one frame due to rollback limit (frame: %d | latest: %d)...", frame,
latestRemoteFrame);
WARN_LOG_FMT(
SLIPPI_ONLINE,
"Halting for one frame due to rollback limit (frame: {} | latest: {} | finalized: {})...",
frame, latestRemoteFrame, finalizedFrame);
return true;
}
stallFrameCount = 0;
// Return true if we are over 60% of a frame ahead of our opponent. Currently limiting how
// often this happens because I'm worried about jittery data causing a lot of unneccesary delays.
s32 frameTime = 16683;
s32 t1 = 10000;
s32 t2 = (2 * frameTime) + t1;
// Only skip once for a given frame because our time detection method doesn't take into
// consideration waiting for a frame. Also it's less jarring and it happens often enough that it
// will smoothly get to the right place
@ -1632,10 +1650,14 @@ bool CEXISlippi::shouldSkipOnlineFrame(s32 frame)
auto offsetUs = slippi_netplay->CalcTimeOffsetUs();
INFO_LOG_FMT(SLIPPI_ONLINE, "[Frame {}] Offset for skip is: {} us", frame, offsetUs);
// At the start of the game, let's make sure to sync perfectly, but after that let the slow
// instance try to do more work before we stall
// The decision to skip a frame only happens when we are already pretty far off ahead. The hope
// is that this won't really be used much because the frame advance of the slow client will pick
// up the difference most of the time. But at some point it's probably better to slow down...
if (offsetUs > 26000)
// is that this won't really be used much because the frame advance of the slow client along
// with dynamic emulation speed will pick up the difference most of the time. But at some point
// it's probably better to slow down...
if (offsetUs > (frame <= 120 ? t1 : t2))
{
isCurrentlySkipping = true;
@ -1665,6 +1687,17 @@ bool CEXISlippi::shouldSkipOnlineFrame(s32 frame)
bool CEXISlippi::shouldAdvanceOnlineFrame(s32 frame)
{
// Logic below is used to test frame advance by forcing it more often
// SConfig::GetInstance().m_EmulationSpeed = 0.5f;
// if (frame > 120 && frame % 10 < 3)
//{
// Common::SleepCurrentThread(1); // Sleep to try to let inputs come in to make late rollbacks
// more likely return true;
//}
// return false;
// return frame % 2 == 0;
// Return true if we are over 60% of a frame behind our opponent. We limit how often this happens
// to get a reliable average to act on. We will allow advancing up to 5 frames (spread out) over
// the 30 frame period. This makes the game feel relatively smooth still
@ -1676,12 +1709,30 @@ bool CEXISlippi::shouldAdvanceOnlineFrame(s32 frame)
// Dynamically adjust emulation speed in order to fine-tune time sync to reduce one sided
// rollbacks even more
auto maxSpeedDeviation = 0.005f;
auto deviation = (offsetUs / 33366.0f) * maxSpeedDeviation;
if (deviation > maxSpeedDeviation)
deviation = maxSpeedDeviation;
else if (deviation < -maxSpeedDeviation)
deviation = -maxSpeedDeviation;
// Modify emulation speed up to a max of 1% at 3 frames offset or more. Don't slow down the
// front instance as much because we want to prioritize performance for the fast PC
float deviation = 0;
float maxSlowDownAmount = 0.005f;
float maxSpeedUpAmount = 0.01f;
int frameWindow = 3;
if (offsetUs > -250 && offsetUs < 8000)
{
// Do nothing, leave deviation at 0 for 100% emulation speed when ahead by 8 ms or less
}
else if (offsetUs < 0)
{
// Here we are behind, so let's speed up our instance
float frameWindowMultiplier = std::min(-offsetUs / (frameWindow * 16683.0f), 1.0f);
deviation = frameWindowMultiplier * maxSpeedUpAmount;
}
else
{
// Here we are ahead, so let's slow down our instance
float frameWindowMultiplier = std::min(offsetUs / (frameWindow * 16683.0f), 1.0f);
deviation = frameWindowMultiplier * -maxSlowDownAmount;
}
auto dynamicEmulationSpeed = 1.0f + deviation;
// If we are behind (negative offset) we want to go above 100% run speed, so we need to subtract
// the deviation value
@ -1692,13 +1743,17 @@ bool CEXISlippi::shouldAdvanceOnlineFrame(s32 frame)
INFO_LOG(SLIPPI_ONLINE, "[Frame %d] Offset for advance is: %d us. New speed: %.2f%%", frame,
offsetUs, dynamicEmulationSpeed * 100.0f);
s32 frameTime = 16683;
s32 t1 = 10000;
s32 t2 = frameTime + t1;
// Count the number of times we're below a threshold we should easily be able to clear. This is
// checked twice per second.
fallBehindCounter += offsetUs < -10000 ? 1 : 0;
fallFarBehindCounter += offsetUs < -25000 ? 1 : 0;
fallBehindCounter += offsetUs < -t1 ? 1 : 0;
fallFarBehindCounter += offsetUs < -t2 ? 1 : 0;
bool isSlow = (offsetUs < -10000 && fallBehindCounter > 50) ||
(offsetUs < -25000 && fallFarBehindCounter > 15);
bool isSlow =
(offsetUs < -t1 && fallBehindCounter > 50) || (offsetUs < -t2 && fallFarBehindCounter > 15);
if (isSlow && lastSearch.mode != SlippiMatchmaking::OnlinePlayMode::TEAMS)
{
// We don't show this message for teams because it seems to false positive a lot there, maybe
@ -1710,13 +1765,13 @@ bool CEXISlippi::shouldAdvanceOnlineFrame(s32 frame)
OSD::Color::RED);
}
if (offsetUs < -10000 && !isCurrentlyAdvancing)
if (offsetUs < -t2 && !isCurrentlyAdvancing)
{
isCurrentlyAdvancing = true;
// On early frames, don't advance any frames. Let the stalling logic handle the initial sync
int maxAdvFrames = frame > 120 ? 5 : 0;
framesToAdvance = ((-offsetUs - 10000) / 16683) + 1;
int maxAdvFrames = frame > 120 ? 3 : 0;
framesToAdvance = ((-offsetUs - t1) / frameTime) + 1;
framesToAdvance = framesToAdvance > maxAdvFrames ? maxAdvFrames : framesToAdvance;
WARN_LOG(SLIPPI_ONLINE,
@ -1747,8 +1802,8 @@ void CEXISlippi::handleSendInputs(u8* payload)
if (isConnectionStalled)
return;
int32_t frame = payload[0] << 24 | payload[1] << 16 | payload[2] << 8 | payload[3];
u8 delay = payload[4];
s32 frame = Common::swap32(&payload[0]);
u8 delay = payload[8];
// On the first frame sent, we need to queue up empty dummy pads for as many
// frames as we have delay
@ -1761,22 +1816,27 @@ void CEXISlippi::handleSendInputs(u8* payload)
}
}
auto pad = std::make_unique<SlippiPad>(frame + delay, &payload[5]);
auto pad = std::make_unique<SlippiPad>(frame + delay, &payload[9]);
slippi_netplay->SendSlippiPad(std::move(pad));
}
void CEXISlippi::prepareOpponentInputs(u8* payload)
void CEXISlippi::prepareOpponentInputs(s32 frame, bool shouldSkip)
{
m_read_queue.clear();
int32_t frame = payload[0] << 24 | payload[1] << 16 | payload[2] << 8 | payload[3];
u8 frameResult = 1; // Indicates to continue frame
auto state = slippi_netplay->GetSlippiConnectStatus();
if (state != SlippiNetplayClient::SlippiConnectStatus::NET_CONNECT_STATUS_CONNECTED ||
isConnectionStalled)
if (shouldSkip)
{
// Event though we are skipping an input, we still want to prepare the opponent inputs because
// in the case where we get a stall on an advance frame, we need to keep the RXB inputs
// populated for when the frame inputs are requested on a rollback
frameResult = 2;
}
else if (state != SlippiNetplayClient::SlippiConnectStatus::NET_CONNECT_STATUS_CONNECTED ||
isConnectionStalled)
{
frameResult = 3; // Indicates we have disconnected
}
@ -1785,19 +1845,21 @@ void CEXISlippi::prepareOpponentInputs(u8* payload)
frameResult = 4;
}
m_read_queue.push_back(frameResult); // Indicate a continue frame
m_read_queue.push_back(frameResult); // Write out the control message value
u8 remotePlayerCount = matchmaking->RemotePlayerCount();
m_read_queue.push_back(remotePlayerCount); // Indicate the number of remote players
std::unique_ptr<SlippiRemotePadOutput> results[SLIPPI_REMOTE_PLAYER_MAX];
int offset[SLIPPI_REMOTE_PLAYER_MAX];
INFO_LOG(SLIPPI_ONLINE, "Preparing pad data for frame %d", frame);
int32_t latestFrameRead[SLIPPI_REMOTE_PLAYER_MAX]{};
// Get pad data for each remote player and write each of their latest frame nums to the buf
for (int i = 0; i < remotePlayerCount; i++)
{
results[i] = slippi_netplay->GetSlippiRemotePad(frame, i);
results[i] = slippi_netplay->GetSlippiRemotePad(i, ROLLBACK_MAX_FRAMES);
// results[i] = slippi_netplay->GetFakePadOutput(frame);
// determine offset from which to copy data
offset[i] = (results[i]->latestFrame - frame) * SLIPPI_PAD_FULL_SIZE;
@ -1807,16 +1869,19 @@ void CEXISlippi::prepareOpponentInputs(u8* payload)
int32_t latestFrame = results[i]->latestFrame;
if (latestFrame > frame)
latestFrame = frame;
appendWordToBuffer(&m_read_queue, *(u32*)&latestFrame);
appendWordToBuffer(&m_read_queue, static_cast<u32>(latestFrame));
// INFO_LOG(SLIPPI_ONLINE, "Sending frame num %d for pIdx %d (offset: %d)", latestFrame, i,
// offset[i]);
}
// Send the current frame for any unused player slots.
for (int i = remotePlayerCount; i < SLIPPI_REMOTE_PLAYER_MAX; i++)
{
appendWordToBuffer(&m_read_queue, *(u32*)&frame);
appendWordToBuffer(&m_read_queue, static_cast<u32>(frame));
}
s32* val = std::min_element(std::begin(latestFrameRead), std::end(latestFrameRead));
appendWordToBuffer(&m_read_queue, static_cast<u32>(*val));
// copy pad data over
for (int i = 0; i < SLIPPI_REMOTE_PLAYER_MAX; i++)
{

6
Source/Core/Core/HW/EXI/EXI_DeviceSlippi.h
View file

@ -112,7 +112,7 @@ private:
{CMD_GET_GECKO_CODES, 0},
// The following are used for Slippi online and also have fixed sizes
{CMD_ONLINE_INPUTS, 17},
{CMD_ONLINE_INPUTS, 21},
{CMD_CAPTURE_SAVESTATE, 32},
{CMD_LOAD_SAVESTATE, 32},
{CMD_GET_MATCH_STATE, 0},
@ -173,7 +173,7 @@ private:
u16 getRandomStage();
bool isDisconnected();
void handleOnlineInputs(u8* payload);
void prepareOpponentInputs(u8* payload);
void prepareOpponentInputs(s32 frame, bool shouldSkip);
void handleSendInputs(u8* payload);
void handleCaptureSavestate(u8* payload);
void handleLoadSavestate(u8* payload);
@ -181,7 +181,7 @@ private:
void startFindMatch(u8* payload);
void prepareOnlineMatchState();
void setMatchSelections(u8* payload);
bool shouldSkipOnlineFrame(s32 frame);
bool shouldSkipOnlineFrame(s32 frame, s32 finalizedFrame);
bool shouldAdvanceOnlineFrame(s32 frame);
void handleLogInRequest();
void handleLogOutRequest();

102
Source/Core/Core/Slippi/SlippiNetplay.cpp
View file

@ -289,8 +289,8 @@ unsigned int SlippiNetplayClient::OnData(sf::Packet& packet, ENetPeer* peer)
int32_t headFrame = remotePadQueue[pIdx].empty() ? 0 : remotePadQueue[pIdx].front()->frame;
int inputsToCopy = frame - headFrame;
// Check that the packet actually contains the data it claims to
if ((5 + inputsToCopy * SLIPPI_PAD_DATA_SIZE) > (int)packet.getDataSize())
// Not sure what the max is here. If we never ack frames it could get big...
if (inputsToCopy > 128)
{
ERROR_LOG_FMT(
SLIPPI_ONLINE,
@ -723,9 +723,9 @@ void SlippiNetplayClient::ThreadFunc()
if (isAlreadyConnected)
{
// Don't add this person again if they are already connected. Not doing this can cause one
// person to take up 2 or more spots, denying one or more players from connecting and thus
// getting stuck on the "Waiting" step
// Don't add this person again if they are already connected. Not doing this can cause
// one person to take up 2 or more spots, denying one or more players from connecting
// and thus getting stuck on the "Waiting" step
INFO_LOG(SLIPPI_ONLINE, "Already connected!");
break; // Breaks out of case
}
@ -735,12 +735,12 @@ void SlippiNetplayClient::ThreadFunc()
// This check used to check for port as well as host. The problem was that for some
// people, their internet will switch the port they're sending from. This means these
// people struggle to connect to others but they sometimes do succeed. When we were
// checking for port here though we would get into a state where the person they succeeded
// to connect to would not accept the connection with them, this would lead the player
// with this internet issue to get stuck waiting for the other player. The only downside
// to this that I can guess is that if you fail to connect to one person out of two that
// are on your LAN, it might report that you failed to connect to the wrong person. There
// might be more problems tho, not sure
// checking for port here though we would get into a state where the person they
// succeeded to connect to would not accept the connection with them, this would lead
// the player with this internet issue to get stuck waiting for the other player. The
// only downside to this that I can guess is that if you fail to connect to one person
// out of two that are on your LAN, it might report that you failed to connect to the
// wrong person. There might be more problems tho, not sure
INFO_LOG_FMT(SLIPPI_ONLINE, "[Netplay] Comparing connection address: {} - {}",
remoteAddrs[i].host, netEvent.peer->address.host);
if (remoteAddrs[i].host == netEvent.peer->address.host && !connections[i])
@ -1106,8 +1106,39 @@ u8 SlippiNetplayClient::GetSlippiRemoteSentChatMessage()
return copiedMessageId;
}
std::unique_ptr<SlippiRemotePadOutput> SlippiNetplayClient::GetSlippiRemotePad(int32_t curFrame,
int index)
std::unique_ptr<SlippiRemotePadOutput> SlippiNetplayClient::GetFakePadOutput(int frame)
{
// Used for testing purposes, will ignore the opponent's actual inputs and provide fake
// ones to trigger rollback scenarios
std::unique_ptr<SlippiRemotePadOutput> padOutput = std::make_unique<SlippiRemotePadOutput>();
// Triggers rollback where the first few inputs were correctly predicted
if (frame % 60 < 5)
{
// Return old inputs for a bit
padOutput->latestFrame = frame - (frame % 60);
padOutput->data.insert(padOutput->data.begin(), SLIPPI_PAD_FULL_SIZE, 0);
}
else if (frame % 60 == 5)
{
padOutput->latestFrame = frame;
// Add 5 frames of 0'd inputs
padOutput->data.insert(padOutput->data.begin(), 5 * SLIPPI_PAD_FULL_SIZE, 0);
// Press A button for 2 inputs prior to this frame causing a rollback
padOutput->data[2 * SLIPPI_PAD_FULL_SIZE] = 1;
}
else
{
padOutput->latestFrame = frame;
padOutput->data.insert(padOutput->data.begin(), SLIPPI_PAD_FULL_SIZE, 0);
}
return std::move(padOutput);
}
std::unique_ptr<SlippiRemotePadOutput> SlippiNetplayClient::GetSlippiRemotePad(int index,
int maxFrameCount)
{
std::lock_guard<std::mutex> lk(pad_mutex); // TODO: Is this the correct lock?
@ -1125,21 +1156,37 @@ std::unique_ptr<SlippiRemotePadOutput> SlippiNetplayClient::GetSlippiRemotePad(i
return std::move(padOutput);
}
int inputCount = 0;
padOutput->latestFrame = 0;
// Copy the entire remaining remote buffer
for (auto it = remotePadQueue[index].begin(); it != remotePadQueue[index].end(); ++it)
// Copy inputs from the remote pad queue to the output. We iterate backwards because
// we want to get the oldest frames possible (will have been cleared to contain the last
// finalized frame at the back). I think it's very unlikely but I think before we
// iterated from the front and it's possible the 7 frame limit left out an input the
// game actually needed.
for (auto it = remotePadQueue[index].rbegin(); it != remotePadQueue[index].rend(); ++it)
{
if ((*it)->frame > padOutput->latestFrame)
padOutput->latestFrame = (*it)->frame;
// NOTICE_LOG(SLIPPI_ONLINE, "[%d] (Remote) P%d %08X %08X %08X", (*it)->frame,
// index >= playerIdx ? index + 1 : index, Common::swap32(&(*it)->padBuf[0]),
// Common::swap32(&(*it)->padBuf[4]), Common::swap32(&(*it)->padBuf[8]));
auto padIt = std::begin((*it)->padBuf);
padOutput->data.insert(padOutput->data.end(), padIt, padIt + SLIPPI_PAD_FULL_SIZE);
padOutput->data.insert(padOutput->data.begin(), padIt, padIt + SLIPPI_PAD_FULL_SIZE);
// Limit max amount of inputs to send
inputCount++;
if (inputCount >= maxFrameCount)
break;
}
return std::move(padOutput);
}
void SlippiNetplayClient::DropOldRemoteInputs(int32_t curFrame)
void SlippiNetplayClient::DropOldRemoteInputs(int32_t finalizedFrame)
{
std::lock_guard<std::mutex> lk(pad_mutex);
@ -1162,13 +1209,10 @@ void SlippiNetplayClient::DropOldRemoteInputs(int32_t curFrame)
for (int i = 0; i < m_remotePlayerCount; i++)
{
// INFO_LOG_FMT(SLIPPI_ONLINE, "remotePadQueue[{}] size: {}", i, remotePadQueue[i].size());
while (remotePadQueue[i].size() > 1 && remotePadQueue[i].back()->frame < lowestCommonFrame &&
remotePadQueue[i].back()->frame < curFrame)
{
while (remotePadQueue[i].size() > 1 && remotePadQueue[i].back()->frame < finalizedFrame)
/*INFO_LOG_FMT(SLIPPI_ONLINE, "Popping inputs for frame {} from back of player {} queue",
remotePadQueue[i].back()->frame, i);*/
remotePadQueue[i].pop_back();
}
}
}
@ -1177,23 +1221,19 @@ SlippiMatchInfo* SlippiNetplayClient::GetMatchInfo()
return &matchInfo;
}
int32_t SlippiNetplayClient::GetSlippiLatestRemoteFrame()
int32_t SlippiNetplayClient::GetSlippiLatestRemoteFrame(int maxFrameCount)
{
std::lock_guard<std::mutex> lk(pad_mutex); // TODO: Is this the correct lock?
// Return the lowest frame among remote queues
int lowestFrame = 0;
bool isFrameSet = false;
for (int i = 0; i < m_remotePlayerCount; i++)
{
if (remotePadQueue[i].empty())
{
return 0;
}
int f = remotePadQueue[i].front()->frame;
if (f < lowestFrame || lowestFrame == 0)
auto rp = GetSlippiRemotePad(i, maxFrameCount);
int f = rp->latestFrame;
if (f < lowestFrame || !isFrameSet)
{
lowestFrame = f;
isFrameSet = true;
}
}

7
Source/Core/Core/Slippi/SlippiNetplay.h
View file

@ -137,10 +137,11 @@ public:
void SendConnectionSelected();
void SendSlippiPad(std::unique_ptr<SlippiPad> pad);
void SetMatchSelections(SlippiPlayerSelections& s);
std::unique_ptr<SlippiRemotePadOutput> GetSlippiRemotePad(int32_t curFrame, int index);
void DropOldRemoteInputs(int32_t curFrame);
std::unique_ptr<SlippiRemotePadOutput> GetFakePadOutput(int frame);
std::unique_ptr<SlippiRemotePadOutput> GetSlippiRemotePad(int index, int maxFrameCount);
void DropOldRemoteInputs(int32_t finalizedFrame);
SlippiMatchInfo* GetMatchInfo();
int32_t GetSlippiLatestRemoteFrame();
int32_t GetSlippiLatestRemoteFrame(int maxFrameCount);
SlippiPlayerSelections GetSlippiRemoteChatMessage();
u8 GetSlippiRemoteSentChatMessage();
s32 CalcTimeOffsetUs();