Frameskipping! Complete with GUI! Even my most naive approach resulted in great speeds, even with graphic-intensive games such as Pikmin.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3949 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/Core/Core.vcproj

@@ -2244,14 +2244,6 @@
 			RelativePath=".\Src\CoreTiming.h"
 			>
 		</File>
-		<File
-			RelativePath=".\Src\Frame.cpp"
-			>
-		</File>
-		<File
-			RelativePath=".\Src\Frame.h"
-			>
-		</File>
 		<File
 			RelativePath=".\Src\Host.h"
 			>
@@ -2264,6 +2256,14 @@
 			RelativePath=".\Src\MemTools.h"
 			>
 		</File>
+		<File
+			RelativePath=".\Src\OnFrame.cpp"
+			>
+		</File>
+		<File
+			RelativePath=".\Src\OnFrame.h"
+			>
+		</File>
 		<File
 			RelativePath=".\Src\PatchEngine.cpp"
 			>

Source/Core/Core/Src/Core.cpp

@@ -56,7 +56,7 @@
 #include "LogManager.h"
  
 #include "State.h"
-#include "Frame.h"
+#include "OnFrame.h"
  
 #ifndef _WIN32
 #define WINAPI
@@ -604,9 +604,9 @@ void Callback_VideoCopiedToXFB(bool video_update)
 	static u32 videoupd = 0;
 
 	if (video_update)
-		videoupd++;
+		videoupd += Frame::FrameSkippingFactor() + 1;
 	else
-		frames++;
+		frames += Frame::FrameSkippingFactor() + 1;
 
 	// Custom frame limiter
 	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

Source/Core/Core/Src/HW/SI_DeviceGCController.cpp

@@ -25,7 +25,7 @@
 #include "EXI_Device.h"
 #include "EXI_DeviceMic.h"
 
-#include "../Frame.h"
+#include "../OnFrame.h"
 
 //////////////////////////////////////////////////////////////////////////
 // --- standard gamecube controller ---

Source/Core/Core/Src/OnFrame.cpp

@@ -15,6 +15,8 @@
 // Official SVN repository and contact information can be found at
 // http://code.google.com/p/dolphin-emu/
 
+#include "OnFrame.h"
+
 #include "Core.h"
 #include "PluginManager.h"
 
@@ -25,12 +27,27 @@ bool g_bAutoFire = false;
 u32 g_autoFirstKey = 0, g_autoSecondKey = 0;
 bool g_bFirstKey = true;
 
+int g_framesToSkip = 1, g_frameSkipCounter = 0;
+
 void FrameUpdate() {
 	if(g_bFrameStep)
 		Core::SetState(Core::CORE_PAUSE);
 
 	if(g_bAutoFire)
 		g_bFirstKey = !g_bFirstKey;
+
+	if(g_framesToSkip)
+		FrameSkipping();
+	
+}
+
+void SetFrameSkipping(unsigned int framesToSkip) {
+	g_framesToSkip = (int)framesToSkip;
+	g_frameSkipCounter = 0;
+}
+
+int FrameSkippingFactor() {
+	return g_framesToSkip;
 }
 
 void SetAutoHold(bool bEnabled, u32 keyToHold) {
@@ -60,7 +77,6 @@ void SetFrameStepping(bool bEnabled) {
 	g_bFrameStep = bEnabled;
 }
 
-
 void ModifyController(SPADStatus *PadStatus) {
 	u32 keyToPress = (g_bFirstKey) ? g_autoFirstKey : g_autoSecondKey;
 	
@@ -90,4 +106,12 @@ void ModifyController(SPADStatus *PadStatus) {
 
 }
 
+void FrameSkipping() {
+	g_frameSkipCounter++;
+	if(g_frameSkipCounter > g_framesToSkip)
+		g_frameSkipCounter = 0;
+
+	CPluginManager::GetInstance().GetVideo()->Video_SetRendering(!g_frameSkipCounter);
+}
+
 };

Source/Core/Core/Src/OnFrame.h

@@ -18,6 +18,9 @@
 #ifndef __FRAME_H
 #define __FRAME_H
 
+#include "Common.h"
+#include "pluginspecs_pad.h"
+
 // Per-(video )Frame actions
 
 namespace Frame {
@@ -33,6 +36,10 @@ void SetFrameStepping(bool bEnabled);
 
 void ModifyController(SPADStatus *PadStatus);
 
+void SetFrameSkipping(unsigned int framesToSkip);
+int FrameSkippingFactor();
+void FrameSkipping();
+
 };
 
 #endif // __FRAME_H

Source/Core/Core/Src/SConscript

@@ -11,7 +11,7 @@ files = ["ActionReplay.cpp",
          "CoreParameter.cpp",
          "CoreRerecording.cpp",
          "CoreTiming.cpp",
-         "Frame.cpp",
+         "OnFrame.cpp",
          "Host.cpp",
          "MemTools.cpp",
          "PatchEngine.cpp",