Disable ForceMax60FPS for GOW games and replace it with fixed 60 fps

Core/Compatibility.cpp

@@ -66,6 +66,8 @@ void Compatibility::CheckSettings(IniFile &iniFile, const std::string &gameID) {
 	CheckSetting(iniFile, gameID, "YugiohSaveFix", &flags_.YugiohSaveFix);
 	CheckSetting(iniFile, gameID, "ForceUMDDelay", &flags_.ForceUMDDelay);
 	CheckSetting(iniFile, gameID, "ForceMax60FPS", &flags_.ForceMax60FPS);
+	CheckSetting(iniFile, gameID, "GoWFramerateHack60", &flags_.GoWFramerateHack60);
+	CheckSetting(iniFile, gameID, "GoWFramerateHack30", &flags_.GoWFramerateHack30);
 	CheckSetting(iniFile, gameID, "JitInvalidationHack", &flags_.JitInvalidationHack);
 	CheckSetting(iniFile, gameID, "HideISOFiles", &flags_.HideISOFiles);
 	CheckSetting(iniFile, gameID, "MoreAccurateVMMUL", &flags_.MoreAccurateVMMUL);

Core/Compatibility.h

@@ -65,6 +65,8 @@ struct CompatFlags {
 	bool YugiohSaveFix;
 	bool ForceUMDDelay;
 	bool ForceMax60FPS;
+	bool GoWFramerateHack60;
+	bool GoWFramerateHack30;
 	bool JitInvalidationHack;
 	bool HideISOFiles;
 	bool MoreAccurateVMMUL;

Core/HLE/ReplaceTables.cpp

@@ -25,6 +25,7 @@
 #include "Common/Log.h"
 #include "Common/Swap.h"
 #include "Core/Config.h"
+#include "Core/System.h"
 #include "Core/Debugger/Breakpoints.h"
 #include "Core/Debugger/MemBlockInfo.h"
 #include "Core/Debugger/SymbolMap.h"
@@ -34,6 +35,7 @@
 #include "Core/MIPS/MIPSAnalyst.h"
 #include "Core/HLE/ReplaceTables.h"
 #include "Core/HLE/FunctionWrappers.h"
+#include "Core/HLE/sceDisplay.h"
 
 #include "GPU/Math3D.h"
 #include "GPU/GPU.h"
@@ -1338,6 +1340,27 @@ static int Hook_soltrigger_render_ucschar() {
 	return 0;
 }
 
+static int Hook_gow_fps_hack() {
+	if (PSP_CoreParameter().compat.flags().GoWFramerateHack60 || PSP_CoreParameter().compat.flags().GoWFramerateHack30) {
+		if (PSP_CoreParameter().compat.flags().GoWFramerateHack30) {
+			__DisplayWaitForVblanks("vblank start waited", 2);
+		} else {
+			__DisplayWaitForVblanks("vblank start waited", 1);
+		}
+	}
+	return 0;
+}
+
+static int Hook_gow_vortex_hack() {
+	if (PSP_CoreParameter().compat.flags().GoWFramerateHack60) {
+		// from my tests both ==0x3F800000 and !=0x3F800000 takes around 1:40-1:50, that seems to match correct behaviour
+		if (currentMIPS->r[MIPS_REG_S1] == 0 && currentMIPS->r[MIPS_REG_A0] == 0xC0 && currentMIPS->r[MIPS_REG_T4] != 0x3F800000) {
+			currentMIPS->r[MIPS_REG_S1] = 1;
+		}
+	}
+	return 0;
+}
+
 #define JITFUNC(f) (&MIPSComp::MIPSFrontendInterface::f)
 
 // Can either replace with C functions or functions emitted in Asm/ArmAsm.
@@ -1454,6 +1477,8 @@ static const ReplacementTableEntry entries[] = {
 	{ "worms_copy_normalize_alpha", &Hook_worms_copy_normalize_alpha, 0, REPFLAG_HOOKENTER, 0x0CC },
 	{ "openseason_data_decode", &Hook_openseason_data_decode, 0, REPFLAG_HOOKENTER, 0x2F0 },
 	{ "soltrigger_render_ucschar", &Hook_soltrigger_render_ucschar, 0, REPFLAG_HOOKENTER, 0 },
+	{ "gow_fps_hack", &Hook_gow_fps_hack, 0, REPFLAG_HOOKEXIT , 0 },
+	{ "gow_vortex_hack", &Hook_gow_vortex_hack, 0, REPFLAG_HOOKENTER, 0x60 },
 	{}
 };
 

Core/HLE/sceDisplay.cpp

@@ -730,6 +730,10 @@ static int DisplayWaitForVblanks(const char *reason, int vblanks, bool callbacks
 	return hleLogSuccessVerboseI(SCEDISPLAY, 0, "waiting for %d vblanks", vblanks);
 }
 
+void __DisplayWaitForVblanks(const char* reason, int vblanks, bool callbacks) {
+	DisplayWaitForVblanks(reason, vblanks, callbacks);
+}
+
 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);

Core/HLE/sceDisplay.h

@@ -33,3 +33,4 @@ void __DisplaySetFramebuf(u32 topaddr, int linesize, int pixelformat, int sync);
 void __DisplaySetWasPaused();
 
 void Register_sceDisplay_driver();
+void __DisplayWaitForVblanks(const char* reason, int vblanks, bool callbacks = false);

Core/MIPS/MIPSAnalyst.cpp

@@ -507,6 +507,8 @@ static const HardHashTableEntry hardcodedHashes[] = {
 	{ 0xfe5dd338ab862291, 216, "memset", }, // Metal Gear Solid: Peace Walker demo
 	{ 0xffc8f5f8f946152c, 192, "dl_write_light_color", },
 	{ 0x249a3c5981c73480, 1472, "openseason_data_decode", },  // Open Season
+	{ 0x795d940ad0a605f8, 40, "gow_fps_hack", }, // God of War (all)
+	{ 0x4c75043b7b0c643b, 512, "gow_vortex_hack", } // God of War: Ghost of Sparta vortex timer hack, avoids softlock #8299
 };
 
 namespace MIPSAnalyst {

assets/compat.ini

@@ -802,10 +802,9 @@ ULJS00119 = true
 ULKS46167 = true
 NPJH50017 = true
 
-[ForceMax60FPS]
-# The GOW games are very heavy and render as fast as they can. They benefit greatly from
-# capping the framerate at 60fps.
-
+[GoWFramerateHack60]
+# Replaces ForceMax60FPS for GOW games, should provide smoother experience
+# Also works around softlock in GOW:GOS , see #8299
 # GOW : Ghost of Sparta
 UCUS98737 = true
 UCAS40323 = true
@@ -839,6 +838,47 @@ UCUS98705 = true
 UCED00971 = true
 UCUS98713 = true
 
+[GoWFramerateHack30]
+# As the 60 fps version, but makes GOW games run on a potato,
+# Doesn't suffer from softlock #8299
+# disabled by default since most people wouldn't need it
+# GOW : Ghost of Sparta
+# UCUS98737 = true
+# UCAS40323 = true
+# NPHG00092 = true
+# NPEG00044 = true
+# NPEG00045 = true
+# NPJG00120 = true
+# NPUG80508 = true
+# UCJS10114 = true
+# UCES01401 = true
+# UCES01473 = true
+# GOW : Ghost of Sparta Demo
+# NPEG90035 = true
+# NPUG70125 = true
+# NPJG90095 = true
+# GOW : Chains Of Olympus
+# UCAS40198 = true
+# UCUS98653 = true
+# UCES00842 = true
+# ULJM05438 = true
+# ULJM05348 = true
+# UCKS45084 = true
+# NPUG80325 = true
+# NPEG00023 = true
+# NPHG00027 = true
+# NPHG00028 = true
+# NPJH50170 = true
+# UCET00844 = true
+# GOW: Chains of Olympus Demo
+# UCUS98705 = true
+# UCED00971 = true
+# UCUS98713 = true
+
+[ForceMax60FPS]
+# Some games are very heavy and render as fast as they can. They benefit greatly from
+# capping the framerate at 60fps.
+
 # F1 2006 has extremely long loading times if we don't limit the framerate.
 UCES00238 = true
 UCJS10045 = true