From 2df0c31d13372bc29d488cf7e80d4adb9cf28b46 Mon Sep 17 00:00:00 2001
From: degasus <wickmarkus@web.de>
Date: Fri, 21 Dec 2012 21:04:53 +0100
Subject: [PATCH] add invalid flag for BPStructs (fix issue 5790)

this flag will be set on loading a state and checked before every rendering.
---
 Source/Core/VideoCommon/Src/BPStructs.cpp     | 75 +++++++++++--------
 Source/Core/VideoCommon/Src/BPStructs.h       |  1 +
 Source/Core/VideoCommon/Src/MainBase.cpp      |  2 +-
 .../VideoCommon/Src/VertexManagerBase.cpp     |  4 +
 4 files changed, 51 insertions(+), 31 deletions(-)

diff --git a/Source/Core/VideoCommon/Src/BPStructs.cpp b/Source/Core/VideoCommon/Src/BPStructs.cpp
index 179196e412..1e13a36f96 100644
--- a/Source/Core/VideoCommon/Src/BPStructs.cpp
+++ b/Source/Core/VideoCommon/Src/BPStructs.cpp
@@ -34,9 +34,10 @@
 
 using namespace BPFunctions;
 
-u32 mapTexAddress;
-bool mapTexFound;
-int numWrites;
+static u32 mapTexAddress;
+static bool mapTexFound;
+static int numWrites;
+static bool s_invalid;
 
 extern volatile bool g_bSkipCurrentFrame;
 
@@ -56,6 +57,7 @@ void BPInit()
 	mapTexAddress = 0;
 	numWrites = 0;
 	mapTexFound = false;
+	s_invalid = false;
 }
 
 void RenderToXFB(const BPCmd &bp, const EFBRectangle &rc, float yScale, float xfbLines, u32 xfbAddr, const u32 dstWidth, const u32 dstHeight, float gamma)
@@ -81,6 +83,9 @@ void BPWritten(const BPCmd& bp)
 		  just stuff geometry in them and don't put state changes there
 	----------------------------------------------------------------------------------------------------------------
 	*/
+	
+	// check for invalid state, else unneeded configuration are built
+	BPReload();
 
 	// Debugging only, this lets you skip a bp update
 	//static int times = 0;
@@ -680,32 +685,42 @@ void BPWritten(const BPCmd& bp)
 // Called when loading a saved state.
 void BPReload()
 {
-	// restore anything that goes straight to the renderer.
-	// let's not risk actually replaying any writes.
-	// note that PixelShaderManager is already covered since it has its own DoState.
-	SetGenerationMode();
-	SetScissor();
-	SetLineWidth();
-	SetDepthMode();
-	SetLogicOpMode();
-	SetDitherMode();
-	SetBlendMode();
-	SetColorMask();
-	OnPixelFormatChange();
-	{
-		BPCmd bp = {BPMEM_TX_SETMODE0, 0xFFFFFF, static_cast<int>(((u32*)&bpmem)[BPMEM_TX_SETMODE0])};
-		SetTextureMode(bp);
-	}
-	{
-		BPCmd bp = {BPMEM_TX_SETMODE0_4, 0xFFFFFF, static_cast<int>(((u32*)&bpmem)[BPMEM_TX_SETMODE0_4])};
-		SetTextureMode(bp);
-	}
-	{
-		BPCmd bp = {BPMEM_FIELDMASK, 0xFFFFFF, static_cast<int>(((u32*)&bpmem)[BPMEM_FIELDMASK])};
-		SetInterlacingMode(bp);
-	}
-	{
-		BPCmd bp = {BPMEM_FIELDMODE, 0xFFFFFF, static_cast<int>(((u32*)&bpmem)[BPMEM_FIELDMODE])};
-		SetInterlacingMode(bp);
+	if(s_invalid) {
+		s_invalid = false;
+		
+		// restore anything that goes straight to the renderer.
+		// let's not risk actually replaying any writes.
+		// note that PixelShaderManager is already covered since it has its own DoState.
+		SetGenerationMode();
+		SetScissor();
+		SetLineWidth();
+		SetDepthMode();
+		SetLogicOpMode();
+		SetDitherMode();
+		SetBlendMode();
+		SetColorMask();
+		OnPixelFormatChange();
+		{
+			BPCmd bp = {BPMEM_TX_SETMODE0, 0xFFFFFF, static_cast<int>(((u32*)&bpmem)[BPMEM_TX_SETMODE0])};
+			SetTextureMode(bp);
+		}
+		{
+			BPCmd bp = {BPMEM_TX_SETMODE0_4, 0xFFFFFF, static_cast<int>(((u32*)&bpmem)[BPMEM_TX_SETMODE0_4])};
+			SetTextureMode(bp);
+		}
+		{
+			BPCmd bp = {BPMEM_FIELDMASK, 0xFFFFFF, static_cast<int>(((u32*)&bpmem)[BPMEM_FIELDMASK])};
+			SetInterlacingMode(bp);
+		}
+		{
+			BPCmd bp = {BPMEM_FIELDMODE, 0xFFFFFF, static_cast<int>(((u32*)&bpmem)[BPMEM_FIELDMODE])};
+			SetInterlacingMode(bp);
+		}
 	}
 }
+
+void BPInvalidate()
+{
+	s_invalid = true;
+}
+
diff --git a/Source/Core/VideoCommon/Src/BPStructs.h b/Source/Core/VideoCommon/Src/BPStructs.h
index 38b3d3a3d4..1c1bc23e06 100644
--- a/Source/Core/VideoCommon/Src/BPStructs.h
+++ b/Source/Core/VideoCommon/Src/BPStructs.h
@@ -23,5 +23,6 @@
 void BPInit();
 void LoadBPReg(u32 value0);
 void BPReload();
+void BPInvalidate();
 
 #endif // _BPSTRUCTS_H_
diff --git a/Source/Core/VideoCommon/Src/MainBase.cpp b/Source/Core/VideoCommon/Src/MainBase.cpp
index cb6dc7ae5b..b5e72b1d8d 100644
--- a/Source/Core/VideoCommon/Src/MainBase.cpp
+++ b/Source/Core/VideoCommon/Src/MainBase.cpp
@@ -198,7 +198,7 @@ void VideoBackendHardware::DoState(PointerWrap& p)
 	// Refresh state.
 	if (p.GetMode() == PointerWrap::MODE_READ)
 	{
-		BPReload();
+		BPInvalidate();
 		RecomputeCachedArraybases();
 
 		// Clear all caches that touch RAM
diff --git a/Source/Core/VideoCommon/Src/VertexManagerBase.cpp b/Source/Core/VideoCommon/Src/VertexManagerBase.cpp
index 4118e3dcbd..23f355fe3b 100644
--- a/Source/Core/VideoCommon/Src/VertexManagerBase.cpp
+++ b/Source/Core/VideoCommon/Src/VertexManagerBase.cpp
@@ -9,6 +9,7 @@
 #include "NativeVertexFormat.h"
 #include "TextureCacheBase.h"
 #include "RenderBase.h"
+#include "BPStructs.h"
 
 #include "VertexManagerBase.h"
 #include "VideoConfig.h"
@@ -159,6 +160,9 @@ void VertexManager::AddVertices(int primitive, int numVertices)
 
 void VertexManager::Flush()
 {
+	// loading a state will invalidate BP, so check for it
+	BPReload();
+	
 	g_vertex_manager->vFlush();
 }