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sceDisplay.cpp
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sceDisplay.cpp
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// Copyright (c) 2012- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include <vector>
#include <map>
#include <cmath>
#include <algorithm>
// TODO: Move this somewhere else, cleanup.
#ifndef _WIN32
#include <unistd.h>
#include <sys/time.h>
#endif
// TODO: Move the relevant parts into common. Don't want the core
// to be dependent on "native", I think. Or maybe should get rid of common
// and move everything into native...
#include "base/logging.h"
#include "base/timeutil.h"
#include "i18n/i18n.h"
#include "profiler/profiler.h"
#include "gfx_es2/gpu_features.h"
#include "Common/ChunkFile.h"
#include "Core/Config.h"
#include "Core/CoreTiming.h"
#include "Core/CoreParameter.h"
#include "Core/Host.h"
#include "Core/Reporting.h"
#include "Core/System.h"
#include "Core/HLE/HLE.h"
#include "Core/HLE/FunctionWrappers.h"
#include "Core/HLE/sceDisplay.h"
#include "Core/HLE/sceKernel.h"
#include "Core/HLE/sceKernelThread.h"
#include "Core/HLE/sceKernelInterrupt.h"
#include "GPU/GPU.h"
#include "GPU/GPUState.h"
#include "GPU/GPUInterface.h"
#include "GPU/Common/FramebufferCommon.h"
#include "GPU/Common/PostShader.h"
#include "GPU/Debugger/Record.h"
struct FrameBufferState {
u32 topaddr;
GEBufferFormat fmt;
int stride;
};
struct WaitVBlankInfo {
WaitVBlankInfo(u32 tid) : threadID(tid), vcountUnblock(1) {}
WaitVBlankInfo(u32 tid, int vcount) : threadID(tid), vcountUnblock(vcount) {}
SceUID threadID;
// Number of vcounts to block for.
int vcountUnblock;
void DoState(PointerWrap &p) {
auto s = p.Section("WaitVBlankInfo", 1);
if (!s)
return;
p.Do(threadID);
p.Do(vcountUnblock);
}
};
// STATE BEGIN
static FrameBufferState framebuf;
static FrameBufferState latchedFramebuf;
static bool framebufIsLatched;
static int enterVblankEvent = -1;
static int leaveVblankEvent = -1;
static int afterFlipEvent = -1;
static int lagSyncEvent = -1;
static double lastLagSync = 0.0;
static bool lagSyncScheduled = false;
// hCount is computed now.
static int vCount;
// The "AccumulatedHcount" can be adjusted, this is the base.
static u32 hCountBase;
static int isVblank;
static int numSkippedFrames;
static bool hasSetMode;
static int resumeMode;
static int holdMode;
static int brightnessLevel;
static int mode;
static int width;
static int height;
static bool wasPaused;
static bool flippedThisFrame;
// 1.001f to compensate for the classic 59.94 NTSC framerate that the PSP seems to have.
static const double timePerVblank = 1.001f / 60.0f;
// Don't include this in the state, time increases regardless of state.
static double curFrameTime;
static double lastFrameTime;
static double nextFrameTime;
static int numVBlanks;
static int numVBlanksSinceFlip;
static u64 frameStartTicks;
const int hCountPerVblank = 286;
const int PSP_DISPLAY_MODE_LCD = 0;
std::vector<WaitVBlankInfo> vblankWaitingThreads;
// Key is the callback id it was for, or if no callback, the thread id.
// Value is the goal vcount number (in case the callback takes >= 1 vcount to return.)
std::map<SceUID, int> vblankPausedWaits;
// STATE END
// Called when vblank happens (like an internal interrupt.) Not part of state, should be static.
std::vector<VblankCallback> vblankListeners;
// The vblank period is 731.5 us (0.7315 ms)
const double vblankMs = 0.7315;
// These are guesses based on tests.
const double vsyncStartMs = 0.5925;
const double vsyncEndMs = 0.7265;
const double frameMs = 1001.0 / 60.0;
enum {
PSP_DISPLAY_SETBUF_IMMEDIATE = 0,
PSP_DISPLAY_SETBUF_NEXTFRAME = 1
};
static int lastFpsFrame = 0;
static double lastFpsTime = 0.0;
static double fps = 0.0;
static double fpsHistory[120];
static int fpsHistorySize = (int)ARRAY_SIZE(fpsHistory);
static int fpsHistoryPos = 0;
static int fpsHistoryValid = 0;
static double monitorFpsUntil = 0.0;
static int lastNumFlips = 0;
static float flips = 0.0f;
static int actualFlips = 0; // taking frameskip into account
static int lastActualFlips = 0;
static float actualFps = 0;
// For the "max 60 fps" setting.
static int lastFlipsTooFrequent = 0;
static u64 lastFlipCycles = 0;
static u64 nextFlipCycles = 0;
void hleEnterVblank(u64 userdata, int cyclesLate);
void hleLeaveVblank(u64 userdata, int cyclesLate);
void hleAfterFlip(u64 userdata, int cyclesLate);
void hleLagSync(u64 userdata, int cyclesLate);
void __DisplayVblankBeginCallback(SceUID threadID, SceUID prevCallbackId);
void __DisplayVblankEndCallback(SceUID threadID, SceUID prevCallbackId);
int __DisplayGetFlipCount() { return actualFlips; }
int __DisplayGetVCount() { return vCount; }
int __DisplayGetNumVblanks() { return numVBlanks; }
void __DisplayFlip(int cyclesLate);
static void ScheduleLagSync(int over = 0) {
lagSyncScheduled = g_Config.bForceLagSync;
if (lagSyncScheduled) {
CoreTiming::ScheduleEvent(usToCycles(1000 + over), lagSyncEvent, 0);
lastLagSync = real_time_now();
}
}
void __DisplayInit() {
hasSetMode = false;
mode = 0;
resumeMode = 0;
holdMode = 0;
brightnessLevel = 84;
width = 480;
height = 272;
numSkippedFrames = 0;
numVBlanks = 0;
numVBlanksSinceFlip = 0;
flippedThisFrame = false;
framebufIsLatched = false;
framebuf.topaddr = 0x04000000;
framebuf.fmt = GE_FORMAT_8888;
framebuf.stride = 512;
memcpy(&latchedFramebuf, &framebuf, sizeof(latchedFramebuf));
lastFlipsTooFrequent = 0;
lastFlipCycles = 0;
nextFlipCycles = 0;
wasPaused = false;
enterVblankEvent = CoreTiming::RegisterEvent("EnterVBlank", &hleEnterVblank);
leaveVblankEvent = CoreTiming::RegisterEvent("LeaveVBlank", &hleLeaveVblank);
afterFlipEvent = CoreTiming::RegisterEvent("AfterFlip", &hleAfterFlip);
lagSyncEvent = CoreTiming::RegisterEvent("LagSync", &hleLagSync);
ScheduleLagSync();
CoreTiming::ScheduleEvent(msToCycles(frameMs - vblankMs), enterVblankEvent, 0);
isVblank = 0;
frameStartTicks = 0;
vCount = 0;
hCountBase = 0;
curFrameTime = 0.0;
nextFrameTime = 0.0;
lastFrameTime = 0.0;
flips = 0;
fps = 0.0;
actualFlips = 0;
lastActualFlips = 0;
lastNumFlips = 0;
fpsHistoryValid = 0;
fpsHistoryPos = 0;
__KernelRegisterWaitTypeFuncs(WAITTYPE_VBLANK, __DisplayVblankBeginCallback, __DisplayVblankEndCallback);
}
struct GPUStatistics_v0 {
int firstInts[11];
double msProcessingDisplayLists;
int moreInts[15];
};
void __DisplayDoState(PointerWrap &p) {
auto s = p.Section("sceDisplay", 1, 7);
if (!s)
return;
p.Do(framebuf);
p.Do(latchedFramebuf);
p.Do(framebufIsLatched);
p.Do(frameStartTicks);
p.Do(vCount);
if (s <= 2) {
double oldHCountBase;
p.Do(oldHCountBase);
hCountBase = (int) oldHCountBase;
} else {
p.Do(hCountBase);
}
p.Do(isVblank);
p.Do(hasSetMode);
p.Do(mode);
p.Do(resumeMode);
p.Do(holdMode);
if (s >= 4) {
p.Do(brightnessLevel);
}
p.Do(width);
p.Do(height);
WaitVBlankInfo wvi(0);
p.Do(vblankWaitingThreads, wvi);
p.Do(vblankPausedWaits);
p.Do(enterVblankEvent);
CoreTiming::RestoreRegisterEvent(enterVblankEvent, "EnterVBlank", &hleEnterVblank);
p.Do(leaveVblankEvent);
CoreTiming::RestoreRegisterEvent(leaveVblankEvent, "LeaveVBlank", &hleLeaveVblank);
p.Do(afterFlipEvent);
CoreTiming::RestoreRegisterEvent(afterFlipEvent, "AfterFlip", &hleAfterFlip);
if (s >= 5) {
p.Do(lagSyncEvent);
p.Do(lagSyncScheduled);
CoreTiming::RestoreRegisterEvent(lagSyncEvent, "LagSync", &hleLagSync);
lastLagSync = real_time_now();
if (lagSyncScheduled != g_Config.bForceLagSync) {
ScheduleLagSync();
}
} else {
lagSyncEvent = CoreTiming::RegisterEvent("LagSync", &hleLagSync);
ScheduleLagSync();
}
p.Do(gstate);
// TODO: GPU stuff is really not the responsibility of sceDisplay.
// Display just displays the buffers the GPU has drawn, they are really completely distinct.
// Maybe a bit tricky to move at this point, though...
gstate_c.DoState(p);
if (s < 2) {
// This shouldn't have been savestated anyway, but it was.
// It's unlikely to overlap with the first value in gpuStats.
p.ExpectVoid(&gl_extensions.gpuVendor, sizeof(gl_extensions.gpuVendor));
}
if (s < 6) {
GPUStatistics_v0 oldStats;
p.Do(oldStats);
}
if (s < 7) {
u64 now = CoreTiming::GetTicks();
lastFlipCycles = now;
nextFlipCycles = now;
} else {
p.Do(lastFlipCycles);
p.Do(nextFlipCycles);
}
gpu->DoState(p);
if (p.mode == p.MODE_READ) {
gpu->ReapplyGfxState();
if (hasSetMode) {
gpu->InitClear();
}
gpu->SetDisplayFramebuffer(framebuf.topaddr, framebuf.stride, framebuf.fmt);
}
}
void __DisplayShutdown() {
vblankListeners.clear();
vblankWaitingThreads.clear();
}
void __DisplayListenVblank(VblankCallback callback) {
vblankListeners.push_back(callback);
}
static void __DisplayFireVblank() {
for (std::vector<VblankCallback>::iterator iter = vblankListeners.begin(), end = vblankListeners.end(); iter != end; ++iter) {
VblankCallback cb = *iter;
cb();
}
}
void __DisplayVblankBeginCallback(SceUID threadID, SceUID prevCallbackId) {
SceUID pauseKey = prevCallbackId == 0 ? threadID : prevCallbackId;
// This means two callbacks in a row. PSP crashes if the same callback waits inside itself (may need more testing.)
// TODO: Handle this better?
if (vblankPausedWaits.find(pauseKey) != vblankPausedWaits.end()) {
return;
}
WaitVBlankInfo waitData(0);
for (size_t i = 0; i < vblankWaitingThreads.size(); i++) {
WaitVBlankInfo *t = &vblankWaitingThreads[i];
if (t->threadID == threadID) {
waitData = *t;
vblankWaitingThreads.erase(vblankWaitingThreads.begin() + i);
break;
}
}
if (waitData.threadID != threadID) {
WARN_LOG_REPORT(SCEDISPLAY, "sceDisplayWaitVblankCB: could not find waiting thread info.");
return;
}
vblankPausedWaits[pauseKey] = vCount + waitData.vcountUnblock;
DEBUG_LOG(SCEDISPLAY, "sceDisplayWaitVblankCB: Suspending vblank wait for callback");
}
void __DisplayVblankEndCallback(SceUID threadID, SceUID prevCallbackId) {
SceUID pauseKey = prevCallbackId == 0 ? threadID : prevCallbackId;
// Probably should not be possible.
if (vblankPausedWaits.find(pauseKey) == vblankPausedWaits.end()) {
__KernelResumeThreadFromWait(threadID, 0);
return;
}
int vcountUnblock = vblankPausedWaits[pauseKey];
vblankPausedWaits.erase(pauseKey);
if (vcountUnblock <= vCount) {
__KernelResumeThreadFromWait(threadID, 0);
return;
}
// Still have to wait a bit longer.
vblankWaitingThreads.push_back(WaitVBlankInfo(__KernelGetCurThread(), vcountUnblock - vCount));
DEBUG_LOG(SCEDISPLAY, "sceDisplayWaitVblankCB: Resuming vblank wait from callback");
}
// TODO: Also average actualFps
void __DisplayGetFPS(float *out_vps, float *out_fps, float *out_actual_fps) {
*out_vps = fps;
*out_fps = flips;
*out_actual_fps = actualFps;
}
void __DisplayGetVPS(float *out_vps) {
*out_vps = fps;
}
void __DisplayGetAveragedFPS(float *out_vps, float *out_fps) {
float avg = 0.0;
if (fpsHistoryValid > 0) {
for (int i = 0; i < fpsHistoryValid; ++i) {
avg += fpsHistory[i];
}
avg /= (double) fpsHistoryValid;
}
*out_vps = *out_fps = avg;
}
static bool IsRunningSlow() {
// Allow for some startup turbulence for 8 seconds before assuming things are bad.
if (fpsHistoryValid >= 8) {
// Look at only the last 15 samples (starting at the 14th sample behind current.)
int rangeStart = fpsHistoryPos - std::min(fpsHistoryValid, 14);
double best = 0.0;
for (int i = rangeStart; i <= fpsHistoryPos; ++i) {
// rangeStart may have been negative if near a wrap around.
int index = (fpsHistorySize + i) % fpsHistorySize;
best = std::max(fpsHistory[index], best);
}
// Note that SYSPROP_DISPLAY_REFRESH_RATE is multiplied by 1000.
return best < System_GetPropertyInt(SYSPROP_DISPLAY_REFRESH_RATE) * (1.0 / 1001.0);
}
return false;
}
static void CalculateFPS() {
time_update();
double now = time_now_d();
if (now >= lastFpsTime + 1.0) {
double frames = (numVBlanks - lastFpsFrame);
actualFps = (actualFlips - lastActualFlips);
fps = frames / (now - lastFpsTime);
flips = 60.0 * (double) (gpuStats.numFlips - lastNumFlips) / frames;
lastFpsFrame = numVBlanks;
lastNumFlips = gpuStats.numFlips;
lastActualFlips = actualFlips;
lastFpsTime = now;
fpsHistory[fpsHistoryPos++] = fps;
fpsHistoryPos = fpsHistoryPos % fpsHistorySize;
if (fpsHistoryValid < fpsHistorySize) {
++fpsHistoryValid;
}
}
}
void __DisplayGetDebugStats(char *stats, size_t bufsize) {
char statbuf[4096];
gpu->GetStats(statbuf, sizeof(statbuf));
snprintf(stats, bufsize,
"Kernel processing time: %0.2f ms\n"
"Slowest syscall: %s : %0.2f ms\n"
"Most active syscall: %s : %0.2f ms\n%s",
kernelStats.msInSyscalls * 1000.0f,
kernelStats.slowestSyscallName ? kernelStats.slowestSyscallName : "(none)",
kernelStats.slowestSyscallTime * 1000.0f,
kernelStats.summedSlowestSyscallName ? kernelStats.summedSlowestSyscallName : "(none)",
kernelStats.summedSlowestSyscallTime * 1000.0f,
statbuf);
}
void __DisplaySetWasPaused() {
wasPaused = true;
}
static bool FrameTimingThrottled() {
if (PSP_CoreParameter().fpsLimit == FPSLimit::CUSTOM1 && g_Config.iFpsLimit1 == 0) {
return false;
}
if (PSP_CoreParameter().fpsLimit == FPSLimit::CUSTOM2 && g_Config.iFpsLimit2 == 0) {
return false;
}
return !PSP_CoreParameter().unthrottle;
}
static void DoFrameDropLogging(float scaledTimestep) {
if (lastFrameTime != 0.0 && !wasPaused && lastFrameTime + scaledTimestep < curFrameTime) {
const double actualTimestep = curFrameTime - lastFrameTime;
char stats[4096];
__DisplayGetDebugStats(stats, sizeof(stats));
NOTICE_LOG(SCEDISPLAY, "Dropping frames - budget = %.2fms / %.1ffps, actual = %.2fms (+%.2fms) / %.1ffps\n%s", scaledTimestep * 1000.0, 1.0 / scaledTimestep, actualTimestep * 1000.0, (actualTimestep - scaledTimestep) * 1000.0, 1.0 / actualTimestep, stats);
}
}
static int CalculateFrameSkip() {
// Used to calculate the FPS to skip if the user sets the type to percent of fps
int frameSkipNum;
if (g_Config.iFrameSkipType == 1) {
frameSkipNum = ceil( flips * (static_cast<double>(g_Config.iFrameSkip) / 100.00) );
} else {
frameSkipNum = g_Config.iFrameSkip;
}
return frameSkipNum;
}
// Let's collect all the throttling and frameskipping logic here.
static void DoFrameTiming(bool &throttle, bool &skipFrame, float timestep) {
PROFILE_THIS_SCOPE("timing");
FPSLimit fpsLimiter = PSP_CoreParameter().fpsLimit;
throttle = FrameTimingThrottled();
skipFrame = false;
// Check if the frameskipping code should be enabled. If neither throttling or frameskipping is on,
// we have nothing to do here.
bool doFrameSkip = g_Config.iFrameSkip != 0;
if (!throttle && g_Config.bFrameSkipUnthrottle) {
doFrameSkip = true;
skipFrame = true;
if (numSkippedFrames >= 7) {
skipFrame = false;
}
return;
}
if (!throttle && !doFrameSkip)
return;
time_update();
float scaledTimestep = timestep;
if (fpsLimiter == FPSLimit::CUSTOM1 && g_Config.iFpsLimit1 > 0) {
scaledTimestep *= 60.0f / g_Config.iFpsLimit1;
} else if (fpsLimiter == FPSLimit::CUSTOM2 && g_Config.iFpsLimit2 > 0) {
scaledTimestep *= 60.0f / g_Config.iFpsLimit2;
}
if (lastFrameTime == 0.0 || wasPaused) {
nextFrameTime = time_now_d() + scaledTimestep;
} else {
// Advance lastFrameTime by a constant amount each frame,
// but don't let it get too far behind as things can get very jumpy.
const double maxFallBehindFrames = 5.5;
nextFrameTime = std::max(lastFrameTime + scaledTimestep, time_now_d() - maxFallBehindFrames * scaledTimestep);
}
curFrameTime = time_now_d();
if (g_Config.bLogFrameDrops) {
DoFrameDropLogging(scaledTimestep);
}
// Auto-frameskip automatically if speed limit is set differently than the default.
bool useAutoFrameskip = g_Config.bAutoFrameSkip && g_Config.iRenderingMode != FB_NON_BUFFERED_MODE;
bool forceFrameskip = (fpsLimiter == FPSLimit::CUSTOM1 && g_Config.iFpsLimit1 > 60) || (fpsLimiter == FPSLimit::CUSTOM2 && g_Config.iFpsLimit2 > 60);
int frameSkipNum = CalculateFrameSkip();
if (g_Config.bAutoFrameSkip || forceFrameskip) {
// autoframeskip
// Argh, we are falling behind! Let's skip a frame and see if we catch up.
if (curFrameTime > nextFrameTime && doFrameSkip) {
skipFrame = true;
}
} else if (frameSkipNum >= 1) {
// fixed frameskip
if (numSkippedFrames >= frameSkipNum)
skipFrame = false;
else
skipFrame = true;
}
if (curFrameTime < nextFrameTime && throttle) {
// If time gap is huge just jump (somebody unthrottled)
if (nextFrameTime - curFrameTime > 2*scaledTimestep) {
nextFrameTime = curFrameTime;
} else {
// Wait until we've caught up.
while (time_now_d() < nextFrameTime) {
#ifdef _WIN32
sleep_ms(1); // Sleep for 1ms on this thread
#else
const double left = nextFrameTime - curFrameTime;
usleep((long)(left * 1000000));
#endif
time_update();
}
}
curFrameTime = time_now_d();
}
lastFrameTime = nextFrameTime;
wasPaused = false;
}
static void DoFrameIdleTiming() {
PROFILE_THIS_SCOPE("timing");
if (!FrameTimingThrottled() || !g_Config.bEnableSound || wasPaused) {
return;
}
time_update();
double dist = time_now_d() - lastFrameTime;
// Ignore if the distance is just crazy. May mean wrap or pause.
if (dist < 0.0 || dist >= 15 * timePerVblank) {
return;
}
float scaledVblank = timePerVblank;
if (PSP_CoreParameter().fpsLimit == FPSLimit::CUSTOM1 && g_Config.iFpsLimit1 > 0) {
// 0 is handled in FrameTimingThrottled().
scaledVblank *= 60.0f / g_Config.iFpsLimit1;
} else if (PSP_CoreParameter().fpsLimit == FPSLimit::CUSTOM2 && g_Config.iFpsLimit2 > 0) {
scaledVblank *= 60.0f / g_Config.iFpsLimit2;
}
// If we have over at least a vblank of spare time, maintain at least 30fps in delay.
// This prevents fast forward during loading screens.
// Give a little extra wiggle room in case the next vblank does more work.
const double goal = lastFrameTime + (numVBlanksSinceFlip - 1) * scaledVblank - 0.001;
if (numVBlanksSinceFlip >= 2 && time_now_d() < goal) {
while (time_now_d() < goal) {
#ifdef _WIN32
sleep_ms(1);
#else
const double left = goal - time_now_d();
usleep((long)(left * 1000000));
#endif
time_update();
}
}
}
void hleEnterVblank(u64 userdata, int cyclesLate) {
int vbCount = userdata;
VERBOSE_LOG(SCEDISPLAY, "Enter VBlank %i", vbCount);
isVblank = 1;
vCount++; // vCount increases at each VBLANK.
hCountBase += hCountPerVblank; // This is the "accumulated" hcount base.
if (hCountBase > 0x7FFFFFFF) {
hCountBase -= 0x80000000;
}
frameStartTicks = CoreTiming::GetTicks();
CoreTiming::ScheduleEvent(msToCycles(vblankMs) - cyclesLate, leaveVblankEvent, vbCount + 1);
// Trigger VBlank interrupt handlers.
__TriggerInterrupt(PSP_INTR_IMMEDIATE | PSP_INTR_ONLY_IF_ENABLED | PSP_INTR_ALWAYS_RESCHED, PSP_VBLANK_INTR, PSP_INTR_SUB_ALL);
// Wake up threads waiting for VBlank
u32 error;
bool wokeThreads = false;
for (size_t i = 0; i < vblankWaitingThreads.size(); i++) {
if (--vblankWaitingThreads[i].vcountUnblock == 0) {
// Only wake it if it wasn't already released by someone else.
SceUID waitID = __KernelGetWaitID(vblankWaitingThreads[i].threadID, WAITTYPE_VBLANK, error);
if (waitID == 1) {
__KernelResumeThreadFromWait(vblankWaitingThreads[i].threadID, 0);
wokeThreads = true;
}
vblankWaitingThreads.erase(vblankWaitingThreads.begin() + i--);
}
}
if (wokeThreads) {
__KernelReSchedule("entered vblank");
}
numVBlanks++;
numVBlanksSinceFlip++;
// TODO: Should this be done here or in hleLeaveVblank?
if (framebufIsLatched) {
DEBUG_LOG(SCEDISPLAY, "Setting latched framebuffer %08x (prev: %08x)", latchedFramebuf.topaddr, framebuf.topaddr);
framebuf = latchedFramebuf;
framebufIsLatched = false;
gpu->SetDisplayFramebuffer(framebuf.topaddr, framebuf.stride, framebuf.fmt);
__DisplayFlip(cyclesLate);
} else if (!flippedThisFrame) {
// Gotta flip even if sceDisplaySetFramebuf was not called.
__DisplayFlip(cyclesLate);
}
}
void __DisplayFlip(int cyclesLate) {
flippedThisFrame = true;
// We flip only if the framebuffer was dirty. This eliminates flicker when using
// non-buffered rendering. The interaction with frame skipping seems to need
// some work.
// But, let's flip at least once every 10 vblanks, to update fps, etc.
const bool noRecentFlip = g_Config.iRenderingMode != FB_NON_BUFFERED_MODE && numVBlanksSinceFlip >= 10;
// Also let's always flip for animated shaders.
const ShaderInfo *shaderInfo = g_Config.sPostShaderName == "Off" ? nullptr : GetPostShaderInfo(g_Config.sPostShaderName);
bool postEffectRequiresFlip = false;
if (shaderInfo && g_Config.iRenderingMode != FB_NON_BUFFERED_MODE)
postEffectRequiresFlip = shaderInfo->requires60fps;
const bool fbDirty = gpu->FramebufferDirty();
if (fbDirty || noRecentFlip || postEffectRequiresFlip) {
CalculateFPS();
// Let the user know if we're running slow, so they know to adjust settings.
// Sometimes users just think the sound emulation is broken.
static bool hasNotifiedSlow = false;
if (!g_Config.bHideSlowWarnings && !hasNotifiedSlow && PSP_CoreParameter().fpsLimit == FPSLimit::NORMAL && IsRunningSlow()) {
#ifndef _DEBUG
I18NCategory *err = GetI18NCategory("Error");
if (g_Config.bSoftwareRendering) {
host->NotifyUserMessage(err->T("Running slow: Try turning off Software Rendering"), 6.0f, 0xFF30D0D0);
} else {
host->NotifyUserMessage(err->T("Running slow: try frameskip, sound is choppy when slow"), 6.0f, 0xFF30D0D0);
}
#endif
hasNotifiedSlow = true;
}
// Setting CORE_NEXTFRAME causes a swap.
const bool fbReallyDirty = gpu->FramebufferReallyDirty();
if (fbReallyDirty || noRecentFlip || postEffectRequiresFlip) {
// Check first though, might've just quit / been paused.
if (coreState == CORE_RUNNING) {
coreState = CORE_NEXTFRAME;
gpu->CopyDisplayToOutput();
if (fbReallyDirty) {
actualFlips++;
}
}
}
if (fbDirty) {
gpuStats.numFlips++;
}
bool throttle, skipFrame;
DoFrameTiming(throttle, skipFrame, (float)numVBlanksSinceFlip * timePerVblank);
int maxFrameskip = 8;
int frameSkipNum = CalculateFrameSkip();
if (throttle) {
// 4 here means 1 drawn, 4 skipped - so 12 fps minimum.
maxFrameskip = frameSkipNum;
}
if (numSkippedFrames >= maxFrameskip || GPURecord::IsActivePending()) {
skipFrame = false;
}
if (skipFrame) {
gstate_c.skipDrawReason |= SKIPDRAW_SKIPFRAME;
numSkippedFrames++;
} else {
gstate_c.skipDrawReason &= ~SKIPDRAW_SKIPFRAME;
numSkippedFrames = 0;
}
// Returning here with coreState == CORE_NEXTFRAME causes a buffer flip to happen (next frame).
// Right after, we regain control for a little bit in hleAfterFlip. I think that's a great
// place to do housekeeping.
CoreTiming::ScheduleEvent(0 - cyclesLate, afterFlipEvent, 0);
numVBlanksSinceFlip = 0;
} else {
// Okay, there's no new frame to draw. But audio may be playing, so we need to time still.
DoFrameIdleTiming();
}
}
void hleAfterFlip(u64 userdata, int cyclesLate) {
gpu->BeginFrame(); // doesn't really matter if begin or end of frame.
// This seems like as good a time as any to check if the config changed.
if (lagSyncScheduled != g_Config.bForceLagSync) {
ScheduleLagSync();
}
}
void hleLeaveVblank(u64 userdata, int cyclesLate) {
isVblank = 0;
flippedThisFrame = false;
VERBOSE_LOG(SCEDISPLAY,"Leave VBlank %i", (int)userdata - 1);
CoreTiming::ScheduleEvent(msToCycles(frameMs - vblankMs) - cyclesLate, enterVblankEvent, userdata);
// Fire the vblank listeners after the vblank completes.
__DisplayFireVblank();
}
void hleLagSync(u64 userdata, int cyclesLate) {
// The goal here is to prevent network, audio, and input lag from the real world.
// Our normal timing is very "stop and go". This is efficient, but causes real world lag.
// This event (optionally) runs every 1ms to sync with the real world.
PROFILE_THIS_SCOPE("timing");
if (!FrameTimingThrottled()) {
lagSyncScheduled = false;
return;
}
float scale = 1.0f;
if (PSP_CoreParameter().fpsLimit == FPSLimit::CUSTOM1 && g_Config.iFpsLimit1 > 0) {
// 0 is handled in FrameTimingThrottled().
scale = 60.0f / g_Config.iFpsLimit1;
} else if (PSP_CoreParameter().fpsLimit == FPSLimit::CUSTOM2 && g_Config.iFpsLimit2 > 0) {
scale = 60.0f / g_Config.iFpsLimit2;
}
const double goal = lastLagSync + (scale / 1000.0f);
time_update();
// Don't lag too long ever, if they leave it paused.
while (time_now_d() < goal && goal < time_now_d() + 0.01) {
#ifndef _WIN32
const double left = goal - time_now_d();
usleep((long)(left * 1000000));
#endif
time_update();
}
const int emuOver = (int)cyclesToUs(cyclesLate);
const int over = (int)((time_now_d() - goal) * 1000000);
ScheduleLagSync(over - emuOver);
}
static u32 sceDisplayIsVblank() {
return hleLogSuccessI(SCEDISPLAY, isVblank);
}
static int DisplayWaitForVblanks(const char *reason, int vblanks, bool callbacks = false) {
const s64 ticksIntoFrame = CoreTiming::GetTicks() - frameStartTicks;
const s64 cyclesToNextVblank = msToCycles(frameMs) - ticksIntoFrame;
// These syscalls take about 115 us, so if the next vblank is before then, we're waiting extra.
// At least, on real firmware a wait >= 16500 into the frame will wait two.
if (cyclesToNextVblank <= usToCycles(115)) {
++vblanks;
}
vblankWaitingThreads.push_back(WaitVBlankInfo(__KernelGetCurThread(), vblanks));
__KernelWaitCurThread(WAITTYPE_VBLANK, 1, 0, 0, callbacks, reason);
return hleLogSuccessVerboseI(SCEDISPLAY, 0, "waiting for %d vblanks", vblanks);
}
static u32 sceDisplaySetMode(int displayMode, int displayWidth, int displayHeight) {
if (displayMode != PSP_DISPLAY_MODE_LCD || displayWidth != 480 || displayHeight != 272) {
WARN_LOG_REPORT(SCEDISPLAY, "Video out requested, not supported: mode=%d size=%d,%d", displayMode, displayWidth, displayHeight);
}
if (displayMode != PSP_DISPLAY_MODE_LCD) {
return hleLogWarning(SCEDISPLAY, SCE_KERNEL_ERROR_INVALID_MODE, "invalid mode");
}
if (displayWidth != 480 || displayHeight != 272) {
return hleLogWarning(SCEDISPLAY, SCE_KERNEL_ERROR_INVALID_SIZE, "invalid size");
}
if (!hasSetMode) {
gpu->InitClear();
hasSetMode = true;
}
mode = displayMode;
width = displayWidth;
height = displayHeight;
hleLogSuccessI(SCEDISPLAY, 0);
// On success, this implicitly waits for a vblank start.
return DisplayWaitForVblanks("display mode", 1);
}
void __DisplaySetFramebuf(u32 topaddr, int linesize, int pixelFormat, int sync) {
FrameBufferState fbstate = {0};
fbstate.topaddr = topaddr;
fbstate.fmt = (GEBufferFormat)pixelFormat;
fbstate.stride = linesize;
if (sync == PSP_DISPLAY_SETBUF_IMMEDIATE) {
// Write immediately to the current framebuffer parameters.
framebuf = fbstate;
gpu->SetDisplayFramebuffer(framebuf.topaddr, framebuf.stride, framebuf.fmt);
// IMMEDIATE means that the buffer is fine. We can just flip immediately.
// Doing it in non-buffered though creates problems (black screen) on occasion though
// so let's not.
if (!flippedThisFrame && g_Config.iRenderingMode != FB_NON_BUFFERED_MODE)
__DisplayFlip(0);
} else {
// Delay the write until vblank
latchedFramebuf = fbstate;
framebufIsLatched = true;
// If we update the format or stride, this affects the current framebuf immediately.
framebuf.fmt = latchedFramebuf.fmt;
framebuf.stride = latchedFramebuf.stride;
}
}
// Some games (GTA) never call this during gameplay, so bad place to put a framerate counter.
u32 sceDisplaySetFramebuf(u32 topaddr, int linesize, int pixelformat, int sync) {
if (sync != PSP_DISPLAY_SETBUF_IMMEDIATE && sync != PSP_DISPLAY_SETBUF_NEXTFRAME) {
return hleLogError(SCEDISPLAY, SCE_KERNEL_ERROR_INVALID_MODE, "invalid sync mode");
}
if (topaddr != 0 && !Memory::IsRAMAddress(topaddr) && !Memory::IsVRAMAddress(topaddr)) {
return hleLogError(SCEDISPLAY, SCE_KERNEL_ERROR_INVALID_POINTER, "invalid address");
}
if ((topaddr & 0xF) != 0) {
return hleLogError(SCEDISPLAY, SCE_KERNEL_ERROR_INVALID_POINTER, "misaligned address");
}
if ((linesize & 0x3F) != 0 || (linesize == 0 && topaddr != 0)) {
return hleLogError(SCEDISPLAY, SCE_KERNEL_ERROR_INVALID_SIZE, "invalid stride");
}
if (pixelformat < 0 || pixelformat > GE_FORMAT_8888) {
return hleLogError(SCEDISPLAY, SCE_KERNEL_ERROR_INVALID_FORMAT, "invalid format");
}
if (sync == PSP_DISPLAY_SETBUF_IMMEDIATE) {
if ((GEBufferFormat)pixelformat != latchedFramebuf.fmt || linesize != latchedFramebuf.stride) {
return hleReportError(SCEDISPLAY, SCE_KERNEL_ERROR_INVALID_MODE, "must change latched framebuf first");
}
}
hleEatCycles(290);
s64 delayCycles = 0;
// Don't count transitions between display off and display on.
if (topaddr != 0 && topaddr != framebuf.topaddr && framebuf.topaddr != 0 && g_Config.iForceMaxEmulatedFPS > 0) {
// sceDisplaySetFramebuf() isn't supposed to delay threads at all. This is a hack.
// So let's only delay when it's more than 1ms.
const s64 FLIP_DELAY_CYCLES_MIN = usToCycles(1000);
// Some games (like Final Fantasy 4) only call this too much in spurts.
// The goal is to fix games where this would result in a consistent overhead.
const int FLIP_DELAY_MIN_FLIPS = 30;
// Since we move nextFlipCycles forward a whole frame each time, we allow it to be a little ahead.
// Otherwise it'll always be ahead if the game messes up even once.
const s64 LEEWAY_CYCLES_PER_FLIP = usToCycles(10);
u64 now = CoreTiming::GetTicks();
s64 cyclesAhead = nextFlipCycles - now;
if (cyclesAhead > FLIP_DELAY_CYCLES_MIN) {
if (lastFlipsTooFrequent >= FLIP_DELAY_MIN_FLIPS && gpuStats.numClears > 0) {
delayCycles = cyclesAhead;
} else {
++lastFlipsTooFrequent;
}
} else if (-lastFlipsTooFrequent < FLIP_DELAY_MIN_FLIPS) {
--lastFlipsTooFrequent;
}
// 1001 to account for NTSC timing (59.94 fps.)
u64 expected = msToCycles(1001) / g_Config.iForceMaxEmulatedFPS - LEEWAY_CYCLES_PER_FLIP;
lastFlipCycles = now;
nextFlipCycles = std::max(lastFlipCycles, nextFlipCycles) + expected;
}
__DisplaySetFramebuf(topaddr, linesize, pixelformat, sync);
// No delaying while inside an interrupt. It'll cause idle threads to starve.
if (delayCycles > 0 && !__IsInInterrupt()) {
// Okay, the game is going at too high a frame rate. God of War and Fat Princess both do this.
// Simply eating the cycles works and is fast, but breaks other games (like Jeanne d'Arc.)
// So, instead, we delay this HLE thread only (a small deviation from correct behavior.)
return hleDelayResult(hleLogSuccessI(SCEDISPLAY, 0, "delaying frame thread"), "set framebuf", cyclesToUs(delayCycles));
} else {
if (topaddr == 0) {
return hleLogSuccessI(SCEDISPLAY, 0, "disabling display");
} else {
return hleLogSuccessI(SCEDISPLAY, 0);
}
}
}
bool __DisplayGetFramebuf(PSPPointer<u8> *topaddr, u32 *linesize, u32 *pixelFormat, int latchedMode) {
const FrameBufferState &fbState = latchedMode == PSP_DISPLAY_SETBUF_NEXTFRAME ? latchedFramebuf : framebuf;
if (topaddr != nullptr)
(*topaddr).ptr = fbState.topaddr;
if (linesize != nullptr)
*linesize = fbState.stride;
if (pixelFormat != nullptr)
*pixelFormat = fbState.fmt;
return true;
}
static u32 sceDisplayGetFramebuf(u32 topaddrPtr, u32 linesizePtr, u32 pixelFormatPtr, int latchedMode) {
// NOTE: This is wrong and partially reverts #8753. Presumably there's something else involved here as well.
// See #8816. Could also be a firmware version difference, there are a few of those...
const FrameBufferState &fbState = (latchedMode == PSP_DISPLAY_SETBUF_NEXTFRAME && framebufIsLatched) ? latchedFramebuf : framebuf;
if (Memory::IsValidAddress(topaddrPtr))
Memory::Write_U32(fbState.topaddr, topaddrPtr);
if (Memory::IsValidAddress(linesizePtr))
Memory::Write_U32(fbState.stride, linesizePtr);
if (Memory::IsValidAddress(pixelFormatPtr))
Memory::Write_U32(fbState.fmt, pixelFormatPtr);
return hleLogSuccessI(SCEDISPLAY, 0);