From 5ebd1e215b29bdbf74317ea1b6cb19578db0e41a Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Sat, 23 Jan 2016 23:20:13 -0500
Subject: [PATCH 1/3] Fifo: Make g_bSkipCurrentFrame a TU-local variable

This is only ever queried, making it a global isn't necessary.
---
 Source/Core/VideoBackends/D3D/Render.cpp          |  2 +-
 Source/Core/VideoBackends/OGL/Render.cpp          |  2 +-
 Source/Core/VideoBackends/Software/DebugUtil.cpp  |  4 ++--
 Source/Core/VideoBackends/Software/EfbCopy.cpp    |  2 +-
 Source/Core/VideoBackends/Software/SWRenderer.cpp |  2 +-
 Source/Core/VideoCommon/BPStructs.cpp             |  2 +-
 Source/Core/VideoCommon/Fifo.cpp                  | 12 +++++++++---
 Source/Core/VideoCommon/Fifo.h                    |  5 ++---
 Source/Core/VideoCommon/OpcodeDecoding.cpp        |  2 +-
 9 files changed, 19 insertions(+), 14 deletions(-)

diff --git a/Source/Core/VideoBackends/D3D/Render.cpp b/Source/Core/VideoBackends/D3D/Render.cpp
index 412e30763c..2c1ca596f7 100644
--- a/Source/Core/VideoBackends/D3D/Render.cpp
+++ b/Source/Core/VideoBackends/D3D/Render.cpp
@@ -714,7 +714,7 @@ void formatBufferDump(const u8* in, u8* out, int w, int h, int p)
 // This function has the final picture. We adjust the aspect ratio here.
 void Renderer::SwapImpl(u32 xfbAddr, u32 fbWidth, u32 fbStride, u32 fbHeight, const EFBRectangle& rc, float Gamma)
 {
-	if (Fifo::g_bSkipCurrentFrame || (!XFBWrited && !g_ActiveConfig.RealXFBEnabled()) || !fbWidth || !fbHeight)
+	if (Fifo::WillSkipCurrentFrame() || (!XFBWrited && !g_ActiveConfig.RealXFBEnabled()) || !fbWidth || !fbHeight)
 	{
 		if (SConfig::GetInstance().m_DumpFrames && !frame_data.empty())
 			AVIDump::AddFrame(&frame_data[0], fbWidth, fbHeight);
diff --git a/Source/Core/VideoBackends/OGL/Render.cpp b/Source/Core/VideoBackends/OGL/Render.cpp
index b107e95645..bf2da15e3f 100644
--- a/Source/Core/VideoBackends/OGL/Render.cpp
+++ b/Source/Core/VideoBackends/OGL/Render.cpp
@@ -1260,7 +1260,7 @@ void Renderer::SwapImpl(u32 xfbAddr, u32 fbWidth, u32 fbStride, u32 fbHeight, co
 	}
 
 	static int w = 0, h = 0;
-	if (Fifo::g_bSkipCurrentFrame || (!XFBWrited && !g_ActiveConfig.RealXFBEnabled()) || !fbWidth || !fbHeight)
+	if (Fifo::WillSkipCurrentFrame() || (!XFBWrited && !g_ActiveConfig.RealXFBEnabled()) || !fbWidth || !fbHeight)
 	{
 		DumpFrame(frame_data, w, h);
 		Core::Callback_VideoCopiedToXFB(false);
diff --git a/Source/Core/VideoBackends/Software/DebugUtil.cpp b/Source/Core/VideoBackends/Software/DebugUtil.cpp
index e7f3089027..0e2b4e1934 100644
--- a/Source/Core/VideoBackends/Software/DebugUtil.cpp
+++ b/Source/Core/VideoBackends/Software/DebugUtil.cpp
@@ -191,7 +191,7 @@ void CopyTempBuffer(s16 x, s16 y, int bufferBase, int subBuffer, const char *nam
 
 void OnObjectBegin()
 {
-	if (!Fifo::g_bSkipCurrentFrame)
+	if (!Fifo::WillSkipCurrentFrame())
 	{
 		if (g_ActiveConfig.bDumpTextures && stats.thisFrame.numDrawnObjects >= g_ActiveConfig.drawStart && stats.thisFrame.numDrawnObjects < g_ActiveConfig.drawEnd)
 			DumpActiveTextures();
@@ -200,7 +200,7 @@ void OnObjectBegin()
 
 void OnObjectEnd()
 {
-	if (!Fifo::g_bSkipCurrentFrame)
+	if (!Fifo::WillSkipCurrentFrame())
 	{
 		if (g_ActiveConfig.bDumpObjects && stats.thisFrame.numDrawnObjects >= g_ActiveConfig.drawStart && stats.thisFrame.numDrawnObjects < g_ActiveConfig.drawEnd)
 			DumpEfb(StringFromFormat("%sobject%i.png",
diff --git a/Source/Core/VideoBackends/Software/EfbCopy.cpp b/Source/Core/VideoBackends/Software/EfbCopy.cpp
index b22a70e5cb..34032437c8 100644
--- a/Source/Core/VideoBackends/Software/EfbCopy.cpp
+++ b/Source/Core/VideoBackends/Software/EfbCopy.cpp
@@ -72,7 +72,7 @@ namespace EfbCopy
 		rc.right = rc.left + (int)bpmem.copyTexSrcWH.x + 1;
 		rc.bottom = rc.top + (int)bpmem.copyTexSrcWH.y + 1;
 
-		if (!Fifo::g_bSkipCurrentFrame)
+		if (!Fifo::WillSkipCurrentFrame())
 		{
 			if (bpmem.triggerEFBCopy.copy_to_xfb)
 			{
diff --git a/Source/Core/VideoBackends/Software/SWRenderer.cpp b/Source/Core/VideoBackends/Software/SWRenderer.cpp
index 0f03f3e840..312a315ec7 100644
--- a/Source/Core/VideoBackends/Software/SWRenderer.cpp
+++ b/Source/Core/VideoBackends/Software/SWRenderer.cpp
@@ -109,7 +109,7 @@ void SWRenderer::UpdateColorTexture(EfbInterface::yuv422_packed *xfb, u32 fbWidt
 // Called on the GPU thread
 void SWRenderer::SwapImpl(u32 xfbAddr, u32 fbWidth, u32 fbStride, u32 fbHeight, const EFBRectangle& rc, float Gamma)
 {
-	if (!Fifo::g_bSkipCurrentFrame)
+	if (!Fifo::WillSkipCurrentFrame())
 	{
 
 		if (g_ActiveConfig.bUseXFB)
diff --git a/Source/Core/VideoCommon/BPStructs.cpp b/Source/Core/VideoCommon/BPStructs.cpp
index 4962dc59ed..ff125652a6 100644
--- a/Source/Core/VideoCommon/BPStructs.cpp
+++ b/Source/Core/VideoCommon/BPStructs.cpp
@@ -380,7 +380,7 @@ static void BPWritten(const BPCmd& bp)
 	case BPMEM_CLEARBBOX2:
 		// Don't compute bounding box if this frame is being skipped!
 		// Wrong but valid values are better than bogus values...
-		if (!Fifo::g_bSkipCurrentFrame)
+		if (!Fifo::WillSkipCurrentFrame())
 		{
 			u8 offset = bp.address & 2;
 			BoundingBox::active = true;
diff --git a/Source/Core/VideoCommon/Fifo.cpp b/Source/Core/VideoCommon/Fifo.cpp
index e04f3ffcbf..953484c114 100644
--- a/Source/Core/VideoCommon/Fifo.cpp
+++ b/Source/Core/VideoCommon/Fifo.cpp
@@ -33,7 +33,7 @@ namespace Fifo
 
 static constexpr u32 FIFO_SIZE = 2 * 1024 * 1024;
 
-bool g_bSkipCurrentFrame = false;
+static bool s_skip_current_frame = false;
 
 static Common::BlockingLoop s_gpu_mainloop;
 
@@ -82,7 +82,8 @@ void DoState(PointerWrap &p)
 		// We're good and paused, right?
 		s_video_buffer_seen_ptr = s_video_buffer_pp_read_ptr = s_video_buffer_read_ptr;
 	}
-	p.Do(g_bSkipCurrentFrame);
+
+	p.Do(s_skip_current_frame);
 	p.Do(s_last_sync_gpu_tick);
 }
 
@@ -129,7 +130,12 @@ void Shutdown()
 
 void SetRendering(bool enabled)
 {
-	g_bSkipCurrentFrame = !enabled;
+	s_skip_current_frame = !enabled;
+}
+
+bool WillSkipCurrentFrame()
+{
+	return s_skip_current_frame;
 }
 
 // May be executed from any thread, even the graphics thread.
diff --git a/Source/Core/VideoCommon/Fifo.h b/Source/Core/VideoCommon/Fifo.h
index b30d41069e..e5e5cd36ac 100644
--- a/Source/Core/VideoCommon/Fifo.h
+++ b/Source/Core/VideoCommon/Fifo.h
@@ -13,8 +13,6 @@ class PointerWrap;
 namespace Fifo
 {
 
-extern bool g_bSkipCurrentFrame;
-
 // This could be in SConfig, but it depends on multiple settings
 // and can change at runtime.
 extern bool g_use_deterministic_gpu_thread;
@@ -53,5 +51,6 @@ void EmulatorState(bool running);
 bool AtBreakpoint();
 void ResetVideoBuffer();
 void SetRendering(bool bEnabled);
+bool WillSkipCurrentFrame();
 
-};
+} // namespace Fifo
diff --git a/Source/Core/VideoCommon/OpcodeDecoding.cpp b/Source/Core/VideoCommon/OpcodeDecoding.cpp
index 3af3337b9e..1733a89ad9 100644
--- a/Source/Core/VideoCommon/OpcodeDecoding.cpp
+++ b/Source/Core/VideoCommon/OpcodeDecoding.cpp
@@ -277,7 +277,7 @@ u8* Run(DataReader src, u32* cycles, bool in_display_list)
 					(cmd_byte & GX_PRIMITIVE_MASK) >> GX_PRIMITIVE_SHIFT,
 					num_vertices,
 					src,
-					Fifo::g_bSkipCurrentFrame,
+					Fifo::WillSkipCurrentFrame(),
 					is_preprocess);
 
 				if (bytes < 0)

From 32ce2be2bfc74f0b395800328c494b423480358d Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Sat, 23 Jan 2016 23:31:13 -0500
Subject: [PATCH 2/3] Fifo: Make g_use_deterministic_gpu_thread a TU-local
 variable

---
 Source/Core/VideoCommon/BPStructs.cpp        |  6 ++--
 Source/Core/VideoCommon/CommandProcessor.cpp |  4 +--
 Source/Core/VideoCommon/Fifo.cpp             | 29 ++++++++++++--------
 Source/Core/VideoCommon/Fifo.h               |  6 ++--
 Source/Core/VideoCommon/OpcodeDecoding.cpp   |  2 +-
 Source/Core/VideoCommon/PixelEngine.cpp      |  4 +--
 Source/Core/VideoCommon/XFStructs.cpp        |  2 +-
 7 files changed, 29 insertions(+), 24 deletions(-)

diff --git a/Source/Core/VideoCommon/BPStructs.cpp b/Source/Core/VideoCommon/BPStructs.cpp
index ff125652a6..aaa73d991d 100644
--- a/Source/Core/VideoCommon/BPStructs.cpp
+++ b/Source/Core/VideoCommon/BPStructs.cpp
@@ -179,7 +179,7 @@ static void BPWritten(const BPCmd& bp)
 		switch (bp.newvalue & 0xFF)
 		{
 		case 0x02:
-			if (!Fifo::g_use_deterministic_gpu_thread)
+			if (!Fifo::UseDeterministicGPUThread())
 				PixelEngine::SetFinish(); // may generate interrupt
 			DEBUG_LOG(VIDEO, "GXSetDrawDone SetPEFinish (value: 0x%02X)", (bp.newvalue & 0xFFFF));
 			return;
@@ -190,12 +190,12 @@ static void BPWritten(const BPCmd& bp)
 		}
 		return;
 	case BPMEM_PE_TOKEN_ID: // Pixel Engine Token ID
-		if (!Fifo::g_use_deterministic_gpu_thread)
+		if (!Fifo::UseDeterministicGPUThread())
 			PixelEngine::SetToken(static_cast<u16>(bp.newvalue & 0xFFFF), false);
 		DEBUG_LOG(VIDEO, "SetPEToken 0x%04x", (bp.newvalue & 0xFFFF));
 		return;
 	case BPMEM_PE_TOKEN_INT_ID: // Pixel Engine Interrupt Token ID
-		if (!Fifo::g_use_deterministic_gpu_thread)
+		if (!Fifo::UseDeterministicGPUThread())
 			PixelEngine::SetToken(static_cast<u16>(bp.newvalue & 0xFFFF), true);
 		DEBUG_LOG(VIDEO, "SetPEToken + INT 0x%04x", (bp.newvalue & 0xFFFF));
 		return;
diff --git a/Source/Core/VideoCommon/CommandProcessor.cpp b/Source/Core/VideoCommon/CommandProcessor.cpp
index 747bec83fe..92bb3c715d 100644
--- a/Source/Core/VideoCommon/CommandProcessor.cpp
+++ b/Source/Core/VideoCommon/CommandProcessor.cpp
@@ -302,7 +302,7 @@ void GatherPipeBursted()
 	// if we aren't linked, we don't care about gather pipe data
 	if (!m_CPCtrlReg.GPLinkEnable)
 	{
-		if (IsOnThread() && !Fifo::g_use_deterministic_gpu_thread)
+		if (IsOnThread() && !Fifo::UseDeterministicGPUThread())
 		{
 			// In multibuffer mode is not allowed write in the same FIFO attached to the GPU.
 			// Fix Pokemon XD in DC mode.
@@ -368,7 +368,7 @@ void UpdateInterrupts(u64 userdata)
 
 void UpdateInterruptsFromVideoBackend(u64 userdata)
 {
-	if (!Fifo::g_use_deterministic_gpu_thread)
+	if (!Fifo::UseDeterministicGPUThread())
 		CoreTiming::ScheduleEvent_Threadsafe(0, et_UpdateInterrupts, userdata);
 }
 
diff --git a/Source/Core/VideoCommon/Fifo.cpp b/Source/Core/VideoCommon/Fifo.cpp
index 953484c114..9e383b84d4 100644
--- a/Source/Core/VideoCommon/Fifo.cpp
+++ b/Source/Core/VideoCommon/Fifo.cpp
@@ -44,7 +44,9 @@ static u8 s_fifo_aux_data[FIFO_SIZE];
 static u8* s_fifo_aux_write_ptr;
 static u8* s_fifo_aux_read_ptr;
 
-bool g_use_deterministic_gpu_thread;
+// This could be in SConfig, but it depends on multiple settings
+// and can change at runtime.
+static bool s_use_deterministic_gpu_thread;
 
 static u64 s_last_sync_gpu_tick;
 static int s_event_sync_gpu;
@@ -56,7 +58,7 @@ static std::atomic<u8*> s_video_buffer_write_ptr;
 static std::atomic<u8*> s_video_buffer_seen_ptr;
 static u8* s_video_buffer_pp_read_ptr;
 // The read_ptr is always owned by the GPU thread.  In normal mode, so is the
-// write_ptr, despite it being atomic.  In g_use_deterministic_gpu_thread mode,
+// write_ptr, despite it being atomic.  In deterministic GPU thread mode,
 // things get a bit more complicated:
 // - The seen_ptr is written by the GPU thread, and points to what it's already
 // processed as much of as possible - in the case of a partial command which
@@ -77,7 +79,7 @@ void DoState(PointerWrap &p)
 	p.DoPointer(write_ptr, s_video_buffer);
 	s_video_buffer_write_ptr = write_ptr;
 	p.DoPointer(s_video_buffer_read_ptr, s_video_buffer);
-	if (p.mode == PointerWrap::MODE_READ && g_use_deterministic_gpu_thread)
+	if (p.mode == PointerWrap::MODE_READ && s_use_deterministic_gpu_thread)
 	{
 		// We're good and paused, right?
 		s_video_buffer_seen_ptr = s_video_buffer_pp_read_ptr = s_video_buffer_read_ptr;
@@ -159,7 +161,7 @@ void EmulatorState(bool running)
 
 void SyncGPU(SyncGPUReason reason, bool may_move_read_ptr)
 {
-	if (g_use_deterministic_gpu_thread)
+	if (s_use_deterministic_gpu_thread)
 	{
 		s_gpu_mainloop.Wait();
 		if (!s_gpu_mainloop.IsRunning())
@@ -306,7 +308,7 @@ void RunGpuLoop()
 		if (!s_emu_running_state.load())
 			return;
 
-		if (g_use_deterministic_gpu_thread)
+		if (s_use_deterministic_gpu_thread)
 		{
 			AsyncRequests::GetInstance()->PullEvents();
 
@@ -392,7 +394,7 @@ void FlushGpu()
 {
 	const SConfig& param = SConfig::GetInstance();
 
-	if (!param.bCPUThread || g_use_deterministic_gpu_thread)
+	if (!param.bCPUThread || s_use_deterministic_gpu_thread)
 		return;
 
 	s_gpu_mainloop.Wait();
@@ -415,12 +417,12 @@ void RunGpu()
 	const SConfig& param = SConfig::GetInstance();
 
 	// execute GPU
-	if (!param.bCPUThread || g_use_deterministic_gpu_thread)
+	if (!param.bCPUThread || s_use_deterministic_gpu_thread)
 	{
 		bool reset_simd_state = false;
 		while (fifo.bFF_GPReadEnable && fifo.CPReadWriteDistance && !AtBreakpoint() )
 		{
-			if (g_use_deterministic_gpu_thread)
+			if (s_use_deterministic_gpu_thread)
 			{
 				ReadDataFromFifoOnCPU(fifo.CPReadPointer);
 				s_gpu_mainloop.Wakeup();
@@ -490,9 +492,9 @@ void UpdateWantDeterminism(bool want)
 
 	gpu_thread = gpu_thread && param.bCPUThread;
 
-	if (g_use_deterministic_gpu_thread != gpu_thread)
+	if (s_use_deterministic_gpu_thread != gpu_thread)
 	{
-		g_use_deterministic_gpu_thread = gpu_thread;
+		s_use_deterministic_gpu_thread = gpu_thread;
 		if (gpu_thread)
 		{
 			// These haven't been updated in non-deterministic mode.
@@ -503,6 +505,11 @@ void UpdateWantDeterminism(bool want)
 	}
 }
 
+bool UseDeterministicGPUThread()
+{
+	return s_use_deterministic_gpu_thread;
+}
+
 /* This function checks the emulated CPU - GPU distance and may wake up the GPU,
  * or block the CPU if required. It should be called by the CPU thread regulary.
  * @ticks The gone emulated CPU time.
@@ -513,7 +520,7 @@ static int Update(int ticks)
 	const SConfig& param = SConfig::GetInstance();
 
 	// GPU is sleeping, so no need for synchronization
-	if (s_gpu_mainloop.IsDone() || g_use_deterministic_gpu_thread)
+	if (s_gpu_mainloop.IsDone() || s_use_deterministic_gpu_thread)
 	{
 		if (s_sync_ticks.load() < 0)
 		{
diff --git a/Source/Core/VideoCommon/Fifo.h b/Source/Core/VideoCommon/Fifo.h
index e5e5cd36ac..92cfc044af 100644
--- a/Source/Core/VideoCommon/Fifo.h
+++ b/Source/Core/VideoCommon/Fifo.h
@@ -13,9 +13,6 @@ class PointerWrap;
 namespace Fifo
 {
 
-// This could be in SConfig, but it depends on multiple settings
-// and can change at runtime.
-extern bool g_use_deterministic_gpu_thread;
 extern std::atomic<u8*> g_video_buffer_write_ptr_xthread;
 
 void Init();
@@ -24,6 +21,7 @@ void Prepare(); // Must be called from the CPU thread.
 void DoState(PointerWrap &f);
 void PauseAndLock(bool doLock, bool unpauseOnUnlock);
 void UpdateWantDeterminism(bool want);
+bool UseDeterministicGPUThread();
 
 // Used for diagnostics.
 enum SyncGPUReason
@@ -36,7 +34,7 @@ enum SyncGPUReason
 	SYNC_GPU_SWAP,
 	SYNC_GPU_AUX_SPACE,
 };
-// In g_use_deterministic_gpu_thread mode, waits for the GPU to be done with pending work.
+// In deterministic GPU thread mode this waits for the GPU to be done with pending work.
 void SyncGPU(SyncGPUReason reason, bool may_move_read_ptr = true);
 
 void PushFifoAuxBuffer(void* ptr, size_t size);
diff --git a/Source/Core/VideoCommon/OpcodeDecoding.cpp b/Source/Core/VideoCommon/OpcodeDecoding.cpp
index 1733a89ad9..32a3782aaf 100644
--- a/Source/Core/VideoCommon/OpcodeDecoding.cpp
+++ b/Source/Core/VideoCommon/OpcodeDecoding.cpp
@@ -39,7 +39,7 @@ static u32 InterpretDisplayList(u32 address, u32 size)
 {
 	u8* startAddress;
 
-	if (Fifo::g_use_deterministic_gpu_thread)
+	if (Fifo::UseDeterministicGPUThread())
 		startAddress = (u8*)Fifo::PopFifoAuxBuffer(size);
 	else
 		startAddress = Memory::GetPointer(address);
diff --git a/Source/Core/VideoCommon/PixelEngine.cpp b/Source/Core/VideoCommon/PixelEngine.cpp
index eec9a5730a..9b61ecee4c 100644
--- a/Source/Core/VideoCommon/PixelEngine.cpp
+++ b/Source/Core/VideoCommon/PixelEngine.cpp
@@ -296,7 +296,7 @@ void SetToken(const u16 _token, const int _bSetTokenAcknowledge)
 
 	CommandProcessor::SetInterruptTokenWaiting(true);
 
-	if (!SConfig::GetInstance().bCPUThread || Fifo::g_use_deterministic_gpu_thread)
+	if (!SConfig::GetInstance().bCPUThread || Fifo::UseDeterministicGPUThread())
 		CoreTiming::ScheduleEvent(0, et_SetTokenOnMainThread, _token | (_bSetTokenAcknowledge << 16));
 	else
 		CoreTiming::ScheduleEvent_Threadsafe(0, et_SetTokenOnMainThread, _token | (_bSetTokenAcknowledge << 16));
@@ -308,7 +308,7 @@ void SetFinish()
 {
 	CommandProcessor::SetInterruptFinishWaiting(true);
 
-	if (!SConfig::GetInstance().bCPUThread || Fifo::g_use_deterministic_gpu_thread)
+	if (!SConfig::GetInstance().bCPUThread || Fifo::UseDeterministicGPUThread())
 		CoreTiming::ScheduleEvent(0, et_SetFinishOnMainThread, 0);
 	else
 		CoreTiming::ScheduleEvent_Threadsafe(0, et_SetFinishOnMainThread, 0);
diff --git a/Source/Core/VideoCommon/XFStructs.cpp b/Source/Core/VideoCommon/XFStructs.cpp
index 402f76c493..964dc15355 100644
--- a/Source/Core/VideoCommon/XFStructs.cpp
+++ b/Source/Core/VideoCommon/XFStructs.cpp
@@ -259,7 +259,7 @@ void LoadIndexedXF(u32 val, int refarray)
 
 	u32* currData = (u32*)(&xfmem) + address;
 	u32* newData;
-	if (Fifo::g_use_deterministic_gpu_thread)
+	if (Fifo::UseDeterministicGPUThread())
 	{
 		newData = (u32*)Fifo::PopFifoAuxBuffer(size * sizeof(u32));
 	}

From 488e7bd46a2504fc763d65ca5151b66cd83e97f9 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Sat, 23 Jan 2016 23:40:30 -0500
Subject: [PATCH 3/3] Fifo: Get rid of undefined global

This declaration doesn't have a matching implementation
so it can be removed entirely.
---
 Source/Core/VideoCommon/Fifo.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/Source/Core/VideoCommon/Fifo.h b/Source/Core/VideoCommon/Fifo.h
index 92cfc044af..68b9ac2eee 100644
--- a/Source/Core/VideoCommon/Fifo.h
+++ b/Source/Core/VideoCommon/Fifo.h
@@ -4,7 +4,6 @@
 
 #pragma once
 
-#include <atomic>
 #include <cstddef>
 #include "Common/CommonTypes.h"
 
@@ -13,8 +12,6 @@ class PointerWrap;
 namespace Fifo
 {
 
-extern std::atomic<u8*> g_video_buffer_write_ptr_xthread;
-
 void Init();
 void Shutdown();
 void Prepare(); // Must be called from the CPU thread.