Display: Don't clear display callback listeners when starting a new exec.

Fixes https://github.com/RetroAchievements/RAIntegration/issues/1186

Core/HLE/sceDisplay.cpp

@@ -175,7 +175,7 @@ static void ScheduleLagSync(int over = 0) {
 
 void __DisplayInit() {
 	__DisplaySetFramerate();
-	DisplayHWInit();
+	DisplayHWReset();
 	hasSetMode = false;
 	mode = 0;
 	resumeMode = 0;
@@ -296,7 +296,6 @@ void __DisplayDoState(PointerWrap &p) {
 }
 
 void __DisplayShutdown() {
-	DisplayHWShutdown();
 	vblankWaitingThreads.clear();
 }
 

Core/HW/Display.cpp

@@ -308,7 +308,7 @@ int DisplayCalculateFrameSkip() {
 	return frameSkipNum;
 }
 
-void DisplayHWInit() {
+void DisplayHWReset() {
 	frameStartTicks = 0;
 	numVBlanks = 0;
 	isVblank = 0;
@@ -329,6 +329,8 @@ void DisplayHWInit() {
 	lastFrameTimeHistory = 0.0;
 }
 
+void DisplayHWInit() {}
+
 void DisplayHWShutdown() {
 	std::lock_guard<std::mutex> guard(listenersLock);
 	vblankListeners.clear();

Core/HW/Display.h

@@ -55,5 +55,6 @@ void DisplayFireActualFlip();
 int DisplayCalculateFrameSkip();
 
 void DisplayHWInit();
+void DisplayHWReset();
 void DisplayHWShutdown();
 void DisplayHWDoState(PointerWrap &p, int hleCompatV2);

Core/System.cpp

@@ -54,6 +54,7 @@
 #include "Core/HLE/Plugins.h"
 #include "Core/HLE/ReplaceTables.h"
 #include "Core/HLE/sceKernel.h"
+#include "Core/HW/Display.h"
 #include "Core/Config.h"
 #include "Core/Core.h"
 #include "Core/CoreTiming.h"
@@ -409,6 +410,8 @@ static bool CPU_Init(FileLoader *fileLoader, IdentifiedFileType type, std::strin
 
 	CoreTiming::Init();
 
+	DisplayHWInit();
+
 	// Init all the HLE modules
 	HLEInit();
 
@@ -496,6 +499,8 @@ void CPU_Shutdown(bool success) {
 	__KernelShutdown();
 	HLEShutdown();
 
+	DisplayHWShutdown();
+
 	pspFileSystem.Shutdown();
 	mipsr4k.Shutdown();
 	Memory::Shutdown();