n64: fix race bug introduced in previous revision. also turn display upside down

BizHawk.Emulation/Consoles/Nintendo/N64/N64.cs

@@ -22,6 +22,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo.N64
 		public int[] frameBuffer = new int[800 * 600];
 		public int[] GetVideoBuffer() 
 		{
+			/*
 			for (int row = 0; row < 600; row++)
 			{
 				for (int col = 0; col < 800; col++)
@@ -30,6 +31,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo.N64
 					frameBuffer[(599 - row) * 800 + col] = (m64p_FrameBuffer[(i * 3)] << 16) + (m64p_FrameBuffer[(i * 3) + 1] << 8) + (m64p_FrameBuffer[(i * 3) + 2]);
 				}
 			}
+			*/
 			return frameBuffer;
 		}
 		public int VirtualWidth { get { return 800; } }
@@ -301,7 +303,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo.N64
 
 		// Graphics plugin specific
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-		private delegate void ReadScreen2(byte[] framebuffer, ref int width, ref int height, int buffer);
+		private delegate void ReadScreen2(int[] framebuffer, ref int width, ref int height, int buffer);
 		ReadScreen2 GFXReadScreen2;
 
 		// Audio plugin specific
@@ -343,13 +345,17 @@ namespace BizHawk.Emulation.Consoles.Nintendo.N64
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		public delegate void FrameCallback();
 		FrameCallback m64pFrameCallback;
-		
-		byte[] m64p_FrameBuffer = new byte[800 * 600 * 3];
+
+		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+		public delegate void StartupCallback();
+
+		//byte[] m64p_FrameBuffer = new byte[800 * 600 * 3];
 		public void Getm64pFrameBuffer()
 		{
 			int width = 0;
 			int height = 0;
-			GFXReadScreen2(m64p_FrameBuffer, ref width, ref height, 0);
+			//GFXReadScreen2(m64p_FrameBuffer, ref width, ref height, 0);
+			GFXReadScreen2(frameBuffer, ref width, ref height, 0);
 			//m64pFrameComplete = true;
 		}
 
@@ -392,6 +398,8 @@ namespace BizHawk.Emulation.Consoles.Nintendo.N64
 
 		AutoResetEvent m64pFrameComplete = new AutoResetEvent(false);
 
+		ManualResetEvent m64pStartupComplete = new ManualResetEvent(false);
+
 		public N64(CoreComm comm, GameInfo game, byte[] rom)
 		{
 			if (AttachedCore != null)
@@ -496,6 +504,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo.N64
 			} while (state != (int)m64p_emu_state.M64EMU_PAUSED);
 			*/
 			//m64pFrameComplete.WaitOne();
+			m64pStartupComplete.WaitOne();
 
 			// because of when we're doing this, we can't call this yet
 			m64pSamplingRate = 32000; // (uint)AudGetAudioRate();
@@ -510,7 +519,8 @@ namespace BizHawk.Emulation.Consoles.Nintendo.N64
 		public void ExecuteEmulator()
 		{
 			emulator_running = true;
-			m64pCoreDoCommandPtr(m64p_command.M64CMD_EXECUTE, 0, IntPtr.Zero);
+			m64pCoreDoCommandPtr(m64p_command.M64CMD_EXECUTE, 0,
+				Marshal.GetFunctionPointerForDelegate(new StartupCallback(() => m64pStartupComplete.Set())));
 			emulator_running = false;
 		}
 

libmupen64plus/mupen64plus-core/src/api/frontend.c

@@ -211,7 +211,7 @@ EXPORT m64p_error CALL CoreDoCommand(m64p_command Command, int ParamInt, void *P
             /* print out plugin-related warning messages */
             plugin_check();
             /* the main_run() function will not return until the player has quit the game */
-            rval = main_run();
+            rval = main_run((void (*)(void))ParamPtr);
             return rval;
         case M64CMD_STOP:
             if (!g_EmulatorRunning)

libmupen64plus/mupen64plus-core/src/main/main.c

@@ -722,7 +722,7 @@ void new_vi(void)
 /*********************************************************************************************************
 * emulation thread - runs the core
 */
-m64p_error main_run(void)
+m64p_error main_run(void (*startcb)(void))
 {
     /* take the r4300 emulator mode from the config file at this point and cache it in a global variable */
     r4300emu = ConfigGetParamInt(g_CoreConfig, "R4300Emulator");
@@ -790,7 +790,7 @@ m64p_error main_run(void)
     /* call r4300 CPU core and run the game */
     r4300_reset_hard();
     r4300_reset_soft();
-    r4300_execute();
+    r4300_execute(startcb);
 
     /* now begin to shut down */
 #ifdef WITH_LIRC

libmupen64plus/mupen64plus-core/src/main/main.h

@@ -43,7 +43,7 @@ void new_vi(void);
 int  main_set_core_defaults(void);
 void main_message(m64p_msg_level level, unsigned int osd_corner, const char *format, ...);
 
-m64p_error main_run(void);
+m64p_error main_run(void (*startcb)(void));
 void main_stop(void);
 void main_toggle_pause(void);
 void main_advance_one(void);

libmupen64plus/mupen64plus-core/src/r4300/r4300.c

@@ -975,7 +975,7 @@ static void dynarec_setup_code(void)
 }
 #endif
 
-void r4300_execute(void)
+void r4300_execute(void (*startcb)(void))
 {
 #if defined(COUNT_INSTR) || (defined(DYNAREC) && defined(PROFILE_R4300))
     unsigned int i;
@@ -999,6 +999,9 @@ void r4300_execute(void)
     next_interupt = 624999;
     init_interupt();
 
+	if (startcb)
+		startcb();
+
 	// now that everything has been set up, we stop here to wait for the first frame
 	WaitForSingleObject(rompausesem, INFINITE);
 

libmupen64plus/mupen64plus-core/src/r4300/r4300.h

@@ -56,7 +56,7 @@ void init_blocks(void);
 void free_blocks(void);
 void r4300_reset_hard(void);
 void r4300_reset_soft(void);
-void r4300_execute(void);
+void r4300_execute(void (*startcb)(void));
 void pure_interpreter(void);
 void compare_core(void);
 void jump_to_func(void);

libmupen64plus/mupen64plus-video-rice/src/Video.cpp

@@ -936,7 +936,7 @@ EXPORT void CALL ReadScreen2(void *dest, int *width, int *height, int bFront)
     else
         glReadBuffer( GL_BACK );
     glReadPixels( 0, 0, windowSetting.uDisplayWidth, windowSetting.uDisplayHeight,
-                 GL_RGB, GL_UNSIGNED_BYTE, dest );
+                 GL_BGRA, GL_UNSIGNED_BYTE, dest );
     glReadBuffer( oldMode );
 #endif
 }