Changing where depth is read. Trying to use the same depth buffer GL uses when copying depth to a texture. This eliminates some quirky code and gets depth copies working in AA, but may not work on older graphics cards.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3234 8ced0084-cf51-0410-be5f-012b33b47a6e

17 files changed, 321 insertions, 553 deletions

diff --git a/Source/Core/VideoCommon/Src/PixelShaderGen.cpp b/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
index 4077c4041f..cb3cd07e8a 100644
--- a/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
+++ b/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
@@ -26,7 +26,7 @@
 
 // Mash together all the inputs that contribute to the code of a generated pixel shader into
 // a unique identifier, basically containing all the bits. Yup, it's a lot ....
-void GetPixelShaderId(PIXELSHADERUID &uid, u32 s_texturemask, u32 zbufrender, u32 zBufRenderToCol0, u32 dstAlphaEnable)
+void GetPixelShaderId(PIXELSHADERUID &uid, u32 s_texturemask, u32 dstAlphaEnable)
 {
 	u32 projtexcoords = 0;
 	for (u32 i = 0; i < (u32)bpmem.genMode.numtevstages + 1; i++) {
@@ -42,9 +42,7 @@ void GetPixelShaderId(PIXELSHADERUID &uid, u32 s_texturemask, u32 zbufrender, u3
 				   ((u32)dstAlphaEnable << 11) |
 				   ((u32)((bpmem.alphaFunc.hex >> 16) & 0xff) << 12) |
 				   (projtexcoords << 20) |
-				   ((u32)bpmem.ztex2.op << 28) |
-				   (zbufrender << 30) |
-				   (zBufRenderToCol0 << 31);
+				   ((u32)bpmem.ztex2.op << 28);
 
 	uid.values[0] = (uid.values[0] & ~0x0ff00000) | (projtexcoords << 20);
 	// swap table
@@ -134,7 +132,7 @@ static void WriteStage(char *&p, int n, u32 texture_mask);
 static void SampleTexture(char *&p, const char *destination, const char *texcoords, const char *texswap, int texmap, u32 texture_mask);
 static void WriteAlphaCompare(char *&p, int num, int comp);
 static bool WriteAlphaTest(char *&p, bool HLSL);
-static void WriteFog(char *&p, bool bOutputZ);
+static void WriteFog(char *&p);
 
 const float epsilon8bit = 1.0f / 255.0f;
 
@@ -369,7 +367,7 @@ static void BuildSwapModeTable()
     }
 }
 
-const char *GeneratePixelShader(u32 texture_mask, bool has_zbuffer_target, bool bRenderZToCol0, bool dstAlphaEnable, bool HLSL)
+const char *GeneratePixelShader(u32 texture_mask, bool dstAlphaEnable, bool HLSL)
 {
 	text[sizeof(text) - 1] = 0x7C;  // canary
     DVSTARTPROFILE();
@@ -383,13 +381,6 @@ const char *GeneratePixelShader(u32 texture_mask, bool has_zbuffer_target, bool
     WRITE(p, "//%i TEV stages, %i texgens, %i IND stages\n",
 		numStages, numTexgen, bpmem.genMode.numindstages);
 
-    bool bRenderZ = has_zbuffer_target && bpmem.zmode.updateenable;
-    bool bOutputZ = bpmem.ztex2.op != ZTEXTURE_DISABLE;
-    bool bInputZ = bpmem.ztex2.op==ZTEXTURE_ADD || bRenderZ || bpmem.fog.c_proj_fsel.fsel != 0;
-
-    // bool bRenderZToCol0 = ; // output z and alpha to color0
-    assert( !bRenderZToCol0 || bRenderZ );
-
     int nIndirectStagesUsed = 0;
     if (bpmem.genMode.numindstages > 0) {
         for (int i = 0; i < numStages; ++i) {
@@ -437,12 +428,8 @@ const char *GeneratePixelShader(u32 texture_mask, bool has_zbuffer_target, bool
 
     WRITE(p, "void main(\n");
 
-    WRITE(p, "out half4 ocol0 : COLOR0,\n");
-    if (bRenderZ && !bRenderZToCol0 )
-        WRITE(p, "out half4 ocol1 : COLOR1,\n");
-
-    if (bOutputZ )
-        WRITE(p, "  out float depth : DEPTH,\n");
+    WRITE(p, "  out half4 ocol0 : COLOR0,\n");
+    WRITE(p, "  out float depth : DEPTH,\n");
 
     // compute window position if needed because binding semantic WPOS is not widely supported
 	if (numTexgen < 7) {
@@ -504,20 +491,18 @@ const char *GeneratePixelShader(u32 texture_mask, bool has_zbuffer_target, bool
 		WRITE(p, "float4 clipPos = float4(uv0.w, uv1.w, uv2.w, uv3.w);\n");
 	}
 
-	if (bInputZ) {
-		// the screen space depth value = far z + (clip z / clip w) * z range		
-		WRITE(p, "float zCoord = "I_ZBIAS"[1].x + (clipPos.z / clipPos.w) * "I_ZBIAS"[1].y;\n");
-	}
+	// the screen space depth value = far z + (clip z / clip w) * z range
+	WRITE(p, "float zCoord = "I_ZBIAS"[1].x + (clipPos.z / clipPos.w) * "I_ZBIAS"[1].y;\n");
 
-    if (bOutputZ) {
-        // use the texture input of the last texture stage (textemp), hopefully this has been read and is in correct format...
-        if (bpmem.ztex2.op == ZTEXTURE_ADD) {
-            WRITE(p, "depth = frac(dot("I_ZBIAS"[0].xyzw, textemp.xyzw) + "I_ZBIAS"[1].w + zCoord);\n");
-        }
-        else {
-            _assert_(bpmem.ztex2.op == ZTEXTURE_REPLACE);
-            WRITE(p, "depth = frac(dot("I_ZBIAS"[0].xyzw, textemp.xyzw) + "I_ZBIAS"[1].w);\n");			
-        }
+    // use the texture input of the last texture stage (textemp), hopefully this has been read and is in correct format...
+    if (bpmem.ztex2.op == ZTEXTURE_ADD) {
+        WRITE(p, "depth = frac(dot("I_ZBIAS"[0].xyzw, textemp.xyzw) + "I_ZBIAS"[1].w + zCoord);\n");
+    }
+    else if (bpmem.ztex2.op == ZTEXTURE_REPLACE) {
+        WRITE(p, "depth = frac(dot("I_ZBIAS"[0].xyzw, textemp.xyzw) + "I_ZBIAS"[1].w);\n");
+    }
+    else {
+        WRITE(p, "depth = zCoord;\n");
     }
 
     //if (bpmem.genMode.numindstages ) WRITE(p, "prev.rg = indtex0.xy;\nprev.b = 0;\n");
@@ -529,34 +514,14 @@ const char *GeneratePixelShader(u32 texture_mask, bool has_zbuffer_target, bool
         WRITE(p, "ocol0 = 0;\n");
     }
     else {
-        if (!bRenderZToCol0) {
-            if (dstAlphaEnable) {
-                WRITE(p, "  ocol0 = float4(prev.rgb,"I_ALPHA"[0].w);\n");
-            } else {			  
-                WriteFog(p, bOutputZ);
-                WRITE(p, "  ocol0 = prev;\n");
-            }
-		} else {
-			WRITE(p, "  ocol0 = prev;\n");
-		}
-    }
-
-    if (bRenderZ) {
-        // write depth as color
-        if (bRenderZToCol0) {
-            if (bOutputZ )
-                WRITE(p, "ocol0.xyz = frac(float3(256.0f*256.0f, 256.0f, 1.0f) * depth);\n");
-            else
-                WRITE(p, "ocol0.xyz = frac(float3(256.0f*256.0f, 256.0f, 1.0f) * zCoord);\n");
-            WRITE(p, "ocol0.w = prev.w;\n");
-        }
-        else {
-            if (bOutputZ)
-                WRITE(p, "ocol1 = frac(float4(256.0f*256.0f, 256.0f, 1.0f, 0.0f) * depth);\n");
-            else
-                WRITE(p, "ocol1 = frac(float4(256.0f*256.0f, 256.0f, 1.0f, 0.0f) * zCoord);\n");
+        if (dstAlphaEnable) {
+            WRITE(p, "  ocol0 = float4(prev.rgb,"I_ALPHA"[0].w);\n");
+        } else {
+            WriteFog(p);
+            WRITE(p, "  ocol0 = prev;\n");
         }
     }
+    
     WRITE(p, "}\n");
 	if (text[sizeof(text) - 1] != 0x7C)
 		PanicAlert("PixelShader generator - buffer too small, canary has been eaten!");
@@ -888,7 +853,7 @@ static bool WriteAlphaTest(char *&p, bool HLSL)
     return true;
 }
 
-static void WriteFog(char *&p, bool bOutputZ)
+static void WriteFog(char *&p)
 {
 	bool enabled = bpmem.fog.c_proj_fsel.fsel == 0 ? false : true;
 
@@ -896,11 +861,11 @@ static void WriteFog(char *&p, bool bOutputZ)
         if (bpmem.fog.c_proj_fsel.proj == 0) {
             // perspective
             // ze = A/(B - Zs)
-            WRITE (p, "  float ze = "I_FOG"[1].x / ("I_FOG"[1].y - %s);\n", bOutputZ ? "depth" : "zCoord");
+            WRITE (p, "  float ze = "I_FOG"[1].x / ("I_FOG"[1].y - depth);\n");
         } else {
             // orthographic
             // ze = a*Zs
-            WRITE (p, "  float ze = "I_FOG"[1].x * %s;\n", bOutputZ ? "depth" : "zCoord");
+            WRITE (p, "  float ze = "I_FOG"[1].x * depth;\n");
         }
 
         WRITE (p, "  float fog = clamp(ze - "I_FOG"[1].z, 0.0f, 1.0f);\n");
diff --git a/Source/Core/VideoCommon/Src/PixelShaderGen.h b/Source/Core/VideoCommon/Src/PixelShaderGen.h
index 665c1ab27f..ded4887850 100644
--- a/Source/Core/VideoCommon/Src/PixelShaderGen.h
+++ b/Source/Core/VideoCommon/Src/PixelShaderGen.h
@@ -92,7 +92,7 @@ public:
 	}
 };
 
-const char *GeneratePixelShader(u32 texture_mask, bool has_zbuffer_target, bool bRenderZToCol0, bool dstAlphaEnable, bool HLSL = false);
-void GetPixelShaderId(PIXELSHADERUID &, u32 s_texturemask, u32 zbufrender, u32 zBufRenderToCol0, u32 dstAlphaEnable);
+const char *GeneratePixelShader(u32 texture_mask, bool dstAlphaEnable, bool HLSL = false);
+void GetPixelShaderId(PIXELSHADERUID &, u32 s_texturemask, u32 dstAlphaEnable);
 
 #endif
diff --git a/Source/Core/VideoCommon/Src/VertexShaderGen.cpp b/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
index 93cc52b3f8..2ee3857077 100644
--- a/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
+++ b/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
@@ -25,13 +25,12 @@
 
 // Mash together all the inputs that contribute to the code of a generated vertex shader into
 // a unique identifier, basically containing all the bits. Yup, it's a lot ....
-void GetVertexShaderId(VERTEXSHADERUID& vid, u32 components, u32 zbufrender)
+void GetVertexShaderId(VERTEXSHADERUID& vid, u32 components)
 {
 	vid.values[0] = components |
 		(xfregs.numTexGens << 23) |
 		(xfregs.nNumChans << 27) |
-		((u32)xfregs.bEnableDualTexTransform << 29) |
-		(zbufrender << 30);
+		((u32)xfregs.bEnableDualTexTransform << 29);
 
 	for (int i = 0; i < 2; ++i) {
 		vid.values[1+i] = xfregs.colChans[i].color.enablelighting ?
@@ -77,7 +76,7 @@ static char text[16384];
 
 char *GenerateLightShader(char* p, int index, const LitChannel& chan, const char* dest, int coloralpha);
 
-const char *GenerateVertexShader(u32 components, bool has_zbuffer_target)
+const char *GenerateVertexShader(u32 components)
 {
 	text[sizeof(text) - 1] = 0x7C;  // canary
     DVSTARTPROFILE();
diff --git a/Source/Core/VideoCommon/Src/VertexShaderGen.h b/Source/Core/VideoCommon/Src/VertexShaderGen.h
index 8518f299dd..22a65ed0fa 100644
--- a/Source/Core/VideoCommon/Src/VertexShaderGen.h
+++ b/Source/Core/VideoCommon/Src/VertexShaderGen.h
@@ -94,7 +94,7 @@ public:
 	}
 };
 
-const char *GenerateVertexShader(u32 components, bool has_zbuffer_target);
-void GetVertexShaderId(VERTEXSHADERUID& vid, u32 components, u32 zbufrender);
+const char *GenerateVertexShader(u32 components);
+void GetVertexShaderId(VERTEXSHADERUID& vid, u32 components);
 
 #endif
diff --git a/Source/Plugins/Plugin_VideoDX9/Src/PixelShaderCache.cpp b/Source/Plugins/Plugin_VideoDX9/Src/PixelShaderCache.cpp
index de316d2d8f..8093ed401f 100644
--- a/Source/Plugins/Plugin_VideoDX9/Src/PixelShaderCache.cpp
+++ b/Source/Plugins/Plugin_VideoDX9/Src/PixelShaderCache.cpp
@@ -67,7 +67,7 @@ void PixelShaderCache::SetShader()
 	DVSTARTPROFILE();
 
 	PIXELSHADERUID uid;
-	GetPixelShaderId(uid, PixelShaderManager::GetTextureMask(), false, false, false);
+	GetPixelShaderId(uid, PixelShaderManager::GetTextureMask(), false);
 
 	PSCache::iterator iter;
 	iter = PixelShaders.find(uid);
@@ -85,7 +85,7 @@ void PixelShaderCache::SetShader()
 	}
 
 	bool HLSL = false;
-	const char *code = GeneratePixelShader(PixelShaderManager::GetTextureMask(), false, false, false, HLSL);
+	const char *code = GeneratePixelShader(PixelShaderManager::GetTextureMask(), false, HLSL);
 	LPDIRECT3DPIXELSHADER9 shader = HLSL ? D3D::CompilePixelShader(code, (int)strlen(code), false) : CompileCgShader(code);
 	if (shader)
 	{
diff --git a/Source/Plugins/Plugin_VideoDX9/Src/VertexShaderCache.cpp b/Source/Plugins/Plugin_VideoDX9/Src/VertexShaderCache.cpp
index fc784633b3..fb1c0ee303 100644
--- a/Source/Plugins/Plugin_VideoDX9/Src/VertexShaderCache.cpp
+++ b/Source/Plugins/Plugin_VideoDX9/Src/VertexShaderCache.cpp
@@ -69,7 +69,7 @@ void VertexShaderCache::SetShader(u32 components)
 	DVSTARTPROFILE();
 
 	VERTEXSHADERUID uid;
-	GetVertexShaderId(uid, components, false);
+	GetVertexShaderId(uid, components);
 
 	VSCache::iterator iter;
 	iter = vshaders.find(uid);
@@ -86,7 +86,7 @@ void VertexShaderCache::SetShader(u32 components)
 	}
 
 	bool HLSL = false;
-	const char *code = GenerateVertexShader(components, false);
+	const char *code = GenerateVertexShader(components);
 	LPDIRECT3DVERTEXSHADER9 shader = HLSL ? D3D::CompileVertexShader(code, (int)strlen(code), false) : CompileCgShader(code);
 	if (shader)
 	{
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/BPFunctions.cpp b/Source/Plugins/Plugin_VideoOGL/Src/BPFunctions.cpp
index b3b05635fd..92ac70602e 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/BPFunctions.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/BPFunctions.cpp
@@ -88,9 +88,6 @@ void SetDepthMode(const Bypass &bp)
 		glDisable(GL_DEPTH_TEST);

 		glDepthMask(GL_FALSE);

 	}

-

-	if (!bpmem.zmode.updateenable)

-		Renderer::SetRenderMode(Renderer::RM_Normal);

 }

 void SetBlendMode(const Bypass &bp)

 {

@@ -160,68 +157,38 @@ void RenderToXFB(const Bypass &bp, const TRectangle &multirc, const float &yScal
 }

 void ClearScreen(const Bypass &bp, const TRectangle &multirc)

 {

-	

-        // Clear color

-        Renderer::SetRenderMode(Renderer::RM_Normal);

-		// Clear Z-Buffer target

-        bool bRestoreZBufferTarget = Renderer::UseFakeZTarget();

-        

-		// Update the view port for clearing the picture

-		glViewport(0, 0, Renderer::GetTargetWidth(), Renderer::GetTargetHeight());

-

-        // Always set the scissor in case it was set by the game and has not been reset

-		glScissor(multirc.left, (Renderer::GetTargetHeight() - multirc.bottom), 

-			(multirc.right - multirc.left), (multirc.bottom - multirc.top));

-		// ---------------------------

+	// Update the view port for clearing the picture

+	glViewport(0, 0, Renderer::GetTargetWidth(), Renderer::GetTargetHeight());

 

-        VertexShaderManager::SetViewportChanged();

+    // Always set the scissor in case it was set by the game and has not been reset

+	glScissor(multirc.left, (Renderer::GetTargetHeight() - multirc.bottom), 

+		(multirc.right - multirc.left), (multirc.bottom - multirc.top));

+	// ---------------------------

 

-        // Since clear operations use the source rectangle, we have to do

-		// regular renders (glClear clears the entire buffer)

-        if (bpmem.blendmode.colorupdate || bpmem.blendmode.alphaupdate || bpmem.zmode.updateenable)

-		{                    

-            GLbitfield bits = 0;

-            if (bpmem.blendmode.colorupdate || bpmem.blendmode.alphaupdate)

-			{

-                u32 clearColor = (bpmem.clearcolorAR << 16) | bpmem.clearcolorGB;

-				glClearColor(((clearColor>>16) & 0xff)*(1/255.0f),

-							 ((clearColor>>8 ) & 0xff)*(1/255.0f),

-							 ((clearColor>>0 ) & 0xff)*(1/255.0f),

-							 ((clearColor>>24) & 0xff)*(1/255.0f));

-                bits |= GL_COLOR_BUFFER_BIT;

-            }

-            if (bpmem.zmode.updateenable)

-			{

-                glClearDepth((float)(bpmem.clearZValue & 0xFFFFFF) / float(0xFFFFFF));

-                bits |= GL_DEPTH_BUFFER_BIT;

-            }

-            if (bRestoreZBufferTarget)

-                glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);  // don't clear ztarget here

-            glClear(bits);

-        }

+    VertexShaderManager::SetViewportChanged();

 

-		// Have to clear the target zbuffer

-        if (bpmem.zmode.updateenable && bRestoreZBufferTarget)

+    // Since clear operations use the source rectangle, we have to do

+	// regular renders (glClear clears the entire buffer)

+    if (bpmem.blendmode.colorupdate || bpmem.blendmode.alphaupdate || bpmem.zmode.updateenable)

+	{                    

+        GLbitfield bits = 0;

+        if (bpmem.blendmode.colorupdate || bpmem.blendmode.alphaupdate)

 		{

-            glDrawBuffer(GL_COLOR_ATTACHMENT1_EXT);

-            GL_REPORT_ERRORD();

-            glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);

-            

-            // red should probably be the LSB

-            glClearColor(((bpmem.clearZValue>>0)&0xff)*(1/255.0f),

-				         ((bpmem.clearZValue>>8)&0xff)*(1/255.0f),

-                         ((bpmem.clearZValue>>16)&0xff)*(1/255.0f), 0);

-            glClear(GL_COLOR_BUFFER_BIT);

-            Renderer::SetColorMask();

-            GL_REPORT_ERRORD();   

+            u32 clearColor = (bpmem.clearcolorAR << 16) | bpmem.clearcolorGB;

+			glClearColor(((clearColor>>16) & 0xff)*(1/255.0f),

+						 ((clearColor>>8 ) & 0xff)*(1/255.0f),

+						 ((clearColor>>0 ) & 0xff)*(1/255.0f),

+						 ((clearColor>>24) & 0xff)*(1/255.0f));

+            bits |= GL_COLOR_BUFFER_BIT;

         }

-

-        if (bRestoreZBufferTarget)

+        if (bpmem.zmode.updateenable)

 		{

-            // restore target

-            GLenum s_drawbuffers[2] = {GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT};

-            glDrawBuffers(2, s_drawbuffers);

+            glClearDepth((float)(bpmem.clearZValue & 0xFFFFFF) / float(0xFFFFFF));

+            bits |= GL_DEPTH_BUFFER_BIT;

         }

+        glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);

+        glClear(bits);

+    }

 }

 

 void RestoreRenderState(const Bypass &bp)

@@ -256,4 +223,4 @@ void SetInterlacingMode(const Bypass &bp)
 {

 	// TODO

 }

-};
\ No newline at end of file
+};

diff --git a/Source/Plugins/Plugin_VideoOGL/Src/PixelShaderCache.cpp b/Source/Plugins/Plugin_VideoOGL/Src/PixelShaderCache.cpp
index a6927acb86..7da020485c 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/PixelShaderCache.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/PixelShaderCache.cpp
@@ -36,6 +36,7 @@
 
 static int s_nMaxPixelInstructions;
 static GLuint s_ColorMatrixProgram = 0;
+static GLuint s_DepthMatrixProgram = 0;
 PixelShaderCache::PSCache PixelShaderCache::pshaders;
 PIXELSHADERUID PixelShaderCache::s_curuid;
 bool PixelShaderCache::s_displayCompileAlert;
@@ -86,12 +87,42 @@ void PixelShaderCache::Init()
 		glDeleteProgramsARB(1, &s_ColorMatrixProgram);
 		s_ColorMatrixProgram = 0;
 	}
+
+    sprintf(pmatrixprog, "!!ARBfp1.0"
+						"TEMP R0;\n"
+						"TEMP R1;\n"
+                        "TEMP R2;\n"
+                        "PARAM K0 = { 65536.0, 256.0 };\n" 
+						"TEX R2, fragment.texcoord[0], texture[0], RECT;\n"
+                        "MUL R0.x, R2.x, K0.x;\n"
+                        "FRC R0.x, R0.x;\n"
+                        "MUL R0.y, R2.x, K0.y;\n"
+                        "FRC R0.y, R0.y;\n"
+                        "MOV R0.z, R2.x;\n"
+						"DP4 R1.x, R0, program.env[%d];\n"
+						"DP4 R1.y, R0, program.env[%d];\n"
+                        "DP4 R1.z, R0, program.env[%d];\n"
+                        "DP4 R1.w, R0, program.env[%d];\n"
+						"ADD result.color, R1, program.env[%d];\n"
+						"END\n", C_COLORMATRIX, C_COLORMATRIX+1, C_COLORMATRIX+2, C_COLORMATRIX+3, C_COLORMATRIX+4);
+	glGenProgramsARB(1, &s_DepthMatrixProgram);
+	glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, s_DepthMatrixProgram);
+	glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, (GLsizei)strlen(pmatrixprog), pmatrixprog);
+
+	err = GL_REPORT_ERROR();
+	if (err != GL_NO_ERROR) {
+		ERROR_LOG(VIDEO, "Failed to create depth matrix fragment program");
+		glDeleteProgramsARB(1, &s_DepthMatrixProgram);
+		s_DepthMatrixProgram = 0;
+	}
 }
 
 void PixelShaderCache::Shutdown()
 {
 	glDeleteProgramsARB(1, &s_ColorMatrixProgram);
 	s_ColorMatrixProgram = 0;
+    glDeleteProgramsARB(1, &s_DepthMatrixProgram);
+	s_DepthMatrixProgram = 0;
 	PSCache::iterator iter = pshaders.begin();
 	for (; iter != pshaders.end(); iter++)
 		iter->second.Destroy();
@@ -103,15 +134,18 @@ GLuint PixelShaderCache::GetColorMatrixProgram()
 	return s_ColorMatrixProgram;
 }
 
+GLuint PixelShaderCache::GetDepthMatrixProgram()
+{
+	return s_DepthMatrixProgram;
+}
+
 
 FRAGMENTSHADER* PixelShaderCache::GetShader(bool dstAlphaEnable)
 {
 	DVSTARTPROFILE();
 	PIXELSHADERUID uid;
-	u32 zbufrender = (Renderer::UseFakeZTarget() && bpmem.zmode.updateenable) ? 1 : 0;
-	u32 zBufRenderToCol0 = Renderer::GetRenderMode() != Renderer::RM_Normal;
     u32 dstAlpha = dstAlphaEnable ? 1 : 0;
-	GetPixelShaderId(uid, PixelShaderManager::GetTextureMask(), zbufrender, zBufRenderToCol0, dstAlpha);
+	GetPixelShaderId(uid, PixelShaderManager::GetTextureMask(), dstAlpha);
 
 	PSCache::iterator iter = pshaders.find(uid);
 
@@ -127,8 +161,6 @@ FRAGMENTSHADER* PixelShaderCache::GetShader(bool dstAlphaEnable)
 
 	PSCacheEntry& newentry = pshaders[uid];
 	const char *code = GeneratePixelShader(PixelShaderManager::GetTextureMask(),
-										   Renderer::UseFakeZTarget(),
-										   Renderer::GetRenderMode() != Renderer::RM_Normal,
                                            dstAlphaEnable);
 
 #if defined(_DEBUG) || defined(DEBUGFAST)
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/PixelShaderCache.h b/Source/Plugins/Plugin_VideoOGL/Src/PixelShaderCache.h
index 9b19f5f454..33b92db313 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/PixelShaderCache.h
+++ b/Source/Plugins/Plugin_VideoOGL/Src/PixelShaderCache.h
@@ -65,6 +65,8 @@ public:
 	static bool CompilePixelShader(FRAGMENTSHADER& ps, const char* pstrprogram);
 
 	static GLuint GetColorMatrixProgram();
+
+    static GLuint GetDepthMatrixProgram();
 };
 
 #endif // _PIXELSHADERCACHE_H_
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/Render.cpp b/Source/Plugins/Plugin_VideoOGL/Src/Render.cpp
index 482e275e5c..82327c6086 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/Render.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/Render.cpp
@@ -81,27 +81,27 @@ static bool s_bAVIDumping = false;
 static FILE* f_pFrameDump;
 #endif
 
-static int nZBufferRender = 0;  // if > 0, then use zbuffer render, and count down.
-
 // 1 for no MSAA. Use s_MSAASamples > 1 to check for MSAA.
 static int s_MSAASamples = 1;
 static int s_MSAACoverageSamples = 0;
 
 // Normal Mode
+//
+// By default the depth target is used
+// if there is an error creating and attaching it a depth buffer will be used instead
+//
 // s_RenderTarget is a texture_rect
-// s_DepthTarget is a Z renderbuffer
-// s_FakeZTarget is a texture_rect
+// s_DepthTarget is a texture_rect
+// s_DepthBuffer is a Z renderbuffer
 
 // MSAA mode
 // s_uFramebuffer is a FBO
 // s_RenderTarget is a MSAA renderbuffer
-// s_FakeZBufferTarget is a MSAA renderbuffer
-// s_DepthTarget is a real MSAA z/stencilbuffer
+// s_DepthTarget is a MSAA renderbuffer
 // 
 // s_ResolvedFramebuffer is a FBO
-// s_ResolvedColorTarget is a texture
-// s_ResolvedFakeZTarget is a texture
-// s_ResolvedDepthTarget is a Z renderbuffer
+// s_ResolvedRenderTarget is a texture
+// s_ResolvedDepthTarget is a texture
 
 // A framebuffer is a set of render targets: a color and a z buffer. They can be either RenderBuffers or Textures.
 static GLuint s_uFramebuffer = 0;
@@ -110,11 +110,10 @@ static GLuint s_uResolvedFramebuffer = 0;
 // The size of these should be a (not necessarily even) multiple of the EFB size, 640x528, but isn't.
 // These are all texture IDs. Bind them as rect arb textures.
 static GLuint s_RenderTarget = 0;
-static GLuint s_FakeZTarget  = 0;
 static GLuint s_DepthTarget  = 0;
+static GLuint s_DepthBuffer  = 0;
 
 static GLuint s_ResolvedRenderTarget = 0;
-static GLuint s_ResolvedFakeZTarget  = 0;
 static GLuint s_ResolvedDepthTarget  = 0;
 
 static bool s_bATIDrawBuffers = false;
@@ -128,8 +127,6 @@ static volatile bool s_bScreenshot = false;
 static Common::CriticalSection s_criticalScreenshot;
 static std::string s_sScreenshotName;
 
-static Renderer::RenderMode s_RenderMode = Renderer::RM_Normal;
-
 int frameCount;
 static int s_fps = 0;
 
@@ -328,42 +325,35 @@ bool Renderer::Init()
 		glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 4, s_targetwidth, s_targetheight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 		SetDefaultRectTexParams();
 
-		GLint nMaxMRT = 0;
-		glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS_EXT, &nMaxMRT);
-		if (nMaxMRT > 1) 
-		{
-			// There's MRT support. Create a color texture image to use as secondary render target.
-			// We use MRT to render Z into this one, for various purposes (mostly copy Z to texture).
-			glGenTextures(1, (GLuint *)&s_FakeZTarget);
-			glBindTexture(GL_TEXTURE_RECTANGLE_ARB, s_FakeZTarget);
-			glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 4, s_targetwidth, s_targetheight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
-			SetDefaultRectTexParams();
-		}
-
-		// Create the real depth/stencil buffer. It's a renderbuffer, not a texture.
-		glGenRenderbuffersEXT(1, &s_DepthTarget);
-		glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, s_DepthTarget);
-		glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH24_STENCIL8_EXT, s_targetwidth, s_targetheight);
+		// Create the depth target texture
+		glGenTextures(1, &s_DepthTarget);
+		glBindTexture(GL_TEXTURE_RECTANGLE_ARB, s_DepthTarget);
+        glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_DEPTH_COMPONENT24, s_targetwidth, s_targetheight, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
+        SetDefaultRectTexParams();
 	
-		// Our framebuffer object is still bound here. Attach the two render targets, color and Z/stencil, to the framebuffer object.
+		// Our framebuffer object is still bound here. Attach the two render targets, color and depth, to the framebuffer object.
 		glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE_ARB, s_RenderTarget, 0);
-		glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, s_DepthTarget);
+		glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_RECTANGLE_ARB, s_DepthTarget, 0);
 		GL_REPORT_FBO_ERROR();
 
-		if (s_FakeZTarget != 0) {
-			// We do a simple test to make sure that MRT works. I don't really know why - this is probably a workaround for
-			// some terribly buggy ancient driver.
-			glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_RECTANGLE_ARB, s_FakeZTarget, 0);
-			bool bFailed = glGetError() != GL_NO_ERROR || glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT;
-			glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_RECTANGLE_ARB, 0, 0);
-			if (bFailed) {
-				glDeleteTextures(1, (GLuint *)&s_FakeZTarget);
-				s_FakeZTarget = 0;
-			}
-		}
+        bool bFailed = glGetError() != GL_NO_ERROR || glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT;
+
+        // Check that the FBO is attached. If there is an error revert to a depth buffer.
+        if (bFailed) {
+            ERROR_LOG(VIDEO, "Disabling ztarget feature");
+
+            // detach and delete depth texture
+            glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_RECTANGLE_ARB, 0, 0);
+		    glDeleteTextures(1, (GLuint *)&s_DepthTarget);
+            s_DepthTarget = 0;
 
-		if (s_FakeZTarget == 0)
-			ERROR_LOG(VIDEO, "Disabling ztarget MRT feature (max MRT = %d)", nMaxMRT);
+            // create and attach depth buffer
+		    glGenRenderbuffersEXT(1, (GLuint *)&s_DepthBuffer);
+            glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, s_DepthBuffer);
+            glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH24_STENCIL8_EXT, s_targetwidth, s_targetheight);
+            glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, s_DepthBuffer);
+            GL_REPORT_FBO_ERROR();
+        }
 	}
 	else
 	{
@@ -376,25 +366,17 @@ bool Renderer::Init()
 		} else {
 			glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, s_MSAASamples, GL_RGBA, s_targetwidth, s_targetheight);
 		}
-		glGenRenderbuffersEXT(1, &s_FakeZTarget);
-		glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, s_FakeZTarget);
-		if (s_MSAACoverageSamples) {
-			glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER_EXT, s_MSAACoverageSamples, s_MSAASamples, GL_RGBA, s_targetwidth, s_targetheight);
-		} else {
-			glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, s_MSAASamples, GL_RGBA, s_targetwidth, s_targetheight);
-		}
 		glGenRenderbuffersEXT(1, &s_DepthTarget);
 		glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, s_DepthTarget);
 		if (s_MSAACoverageSamples) {
-			glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER_EXT, s_MSAACoverageSamples, s_MSAASamples, GL_DEPTH24_STENCIL8_EXT, s_targetwidth, s_targetheight);
+			glRenderbufferStorageMultisampleCoverageNV(GL_RENDERBUFFER_EXT, s_MSAACoverageSamples, s_MSAASamples, GL_DEPTH_COMPONENT24, s_targetwidth, s_targetheight);
 		} else {
-			glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, s_MSAASamples, GL_DEPTH24_STENCIL8_EXT, s_targetwidth, s_targetheight);
+			glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, s_MSAASamples, GL_DEPTH_COMPONENT24, s_targetwidth, s_targetheight);
 		}
 		glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
 
 		// Attach them to our multisampled FBO. The multisampled FBO is still bound here.
 		glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER_EXT, s_RenderTarget);
-		glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_RENDERBUFFER_EXT, s_FakeZTarget);
 		glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,  GL_RENDERBUFFER_EXT, s_DepthTarget);
 		GL_REPORT_FBO_ERROR();
 
@@ -411,25 +393,23 @@ bool Renderer::Init()
 		glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 4, s_targetwidth, s_targetheight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 		SetDefaultRectTexParams();
 		// Generate the resolve targets.
-		glGenTextures(1, (GLuint *)&s_ResolvedFakeZTarget);
-		glBindTexture(GL_TEXTURE_RECTANGLE_ARB, s_ResolvedFakeZTarget);
-		glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, 4, s_targetwidth, s_targetheight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+		glGenTextures(1, (GLuint *)&s_ResolvedDepthTarget);
+		glBindTexture(GL_TEXTURE_RECTANGLE_ARB, s_ResolvedDepthTarget);
+        glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_DEPTH_COMPONENT, s_targetwidth, s_targetheight, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, NULL);
 		SetDefaultRectTexParams();
-		// Create the real depth/stencil buffer. It's a renderbuffer, not a texture.
-		glGenRenderbuffersEXT(1, &s_ResolvedDepthTarget);
-		glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, s_ResolvedDepthTarget);
-		glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH24_STENCIL8_EXT, s_targetwidth, s_targetheight);
-		glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
 		
 		// Attach our resolve targets to our resolved FBO.
 		glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE_ARB, s_ResolvedRenderTarget, 0);
-		glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_RECTANGLE_ARB, s_ResolvedFakeZTarget, 0);
-		glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, s_ResolvedDepthTarget);
+		glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_RECTANGLE_ARB, s_ResolvedDepthTarget, 0);
 
 		GL_REPORT_FBO_ERROR();
 
 		bFailed = glGetError() != GL_NO_ERROR || glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT;
 		if (bFailed) PanicAlert("Incomplete rt2");
+
+        if (bFailed) {
+            ERROR_LOG(VIDEO, "AA rendering init failed.");
+        }
 	}
 
     if (GL_REPORT_ERROR() != GL_NO_ERROR)
@@ -438,8 +418,6 @@ bool Renderer::Init()
 	// glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, s_uFramebuffer);
 	glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
 
-    nZBufferRender = 0;  // Initialize the Z render shutoff countdown. We only render Z if it's desired, to save GPU power.
-
     if (GL_REPORT_ERROR() != GL_NO_ERROR)
 		bSuccess = false;
 
@@ -477,7 +455,6 @@ bool Renderer::Init()
     cgGLSetDebugMode(GL_FALSE);
 #endif
     
-    s_RenderMode = Renderer::RM_Normal;
     if (!InitializeGL())
         return false;
 
@@ -592,12 +569,6 @@ void Renderer::SetRenderTarget(GLuint targ)
 		targ != 0 ? targ : s_RenderTarget, 0);
 }
 
-void Renderer::SetDepthTarget(GLuint targ)
-{
-	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT,
-		targ != 0 ? targ : s_DepthTarget);
-}
-
 void Renderer::SetFramebuffer(GLuint fb)
 {
 	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb != 0 ? fb : s_uFramebuffer);
@@ -628,38 +599,39 @@ GLuint Renderer::ResolveAndGetRenderTarget(const TRectangle &source_rect)
 	}
 }
 
-GLuint Renderer::ResolveAndGetFakeZTarget(const TRectangle &source_rect)
+GLuint Renderer::ResolveAndGetDepthTarget(const TRectangle &source_rect)
 {
 	// This logic should be moved elsewhere.
 	if (s_MSAASamples > 1)
 	{
 		// Flip the rectangle	
 		TRectangle flipped_rect;
-		source_rect.FlipYPosition(GetTargetHeight(), &flipped_rect);
+		//source_rect.FlipYPosition(GetTargetHeight(), &flipped_rect);
+
+        // donkopunchstania - some bug causes the offsets to be ignored. driver bug?
+        flipped_rect.top = 0;
+        flipped_rect.bottom = GetTargetHeight();
+
+        flipped_rect.left = 0;
+        flipped_rect.right = GetTargetWidth();
 
 		flipped_rect.Clamp(0, 0, GetTargetWidth(), GetTargetHeight());
-		// Do the resolve. We resolve both color channels, not very necessary.
+		// Do the resolve.
 		glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, s_uFramebuffer);
 		glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, s_uResolvedFramebuffer);
 		glBlitFramebufferEXT(flipped_rect.left, flipped_rect.top, flipped_rect.right, flipped_rect.bottom,
 			                 flipped_rect.left, flipped_rect.top, flipped_rect.right, flipped_rect.bottom,
-							 GL_COLOR_BUFFER_BIT, GL_NEAREST);
+							 GL_DEPTH_BUFFER_BIT, GL_NEAREST);
 
 		// Return the resolved target.
-		return s_ResolvedFakeZTarget;
+		return s_ResolvedDepthTarget;
 	}
 	else 
 	{
-		return s_FakeZTarget;
+		return s_DepthTarget;
 	}
 }
 
-bool Renderer::UseFakeZTarget()
-{
-	// This logic should be moved elsewhere.
-	return nZBufferRender > 0;
-}
-
 void Renderer::ResetGLState()
 {
 	// Gets us to a reasonably sane state where it's possible to do things like
@@ -801,151 +773,6 @@ bool Renderer::IsUsingATIDrawBuffers()
     return s_bATIDrawBuffers;
 }
 
-bool Renderer::HaveStencilBuffer()
-{
-    return s_bHaveStencilBuffer;
-}
-
-void Renderer::SetZBufferRender()
-{
-    nZBufferRender = 10;  // The game asked for Z. Give it 10 frames, then turn it off for speed.
-    GLenum s_drawbuffers[2] = {
-		GL_COLOR_ATTACHMENT0_EXT,
-		GL_COLOR_ATTACHMENT1_EXT
-	};
-    glDrawBuffers(2, s_drawbuffers);
-    glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_RECTANGLE_ARB, s_FakeZTarget, 0);
-    _assert_(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) == GL_FRAMEBUFFER_COMPLETE_EXT);
-}
-
-
-// Does this function even work correctly???
-void Renderer::FlushZBufferAlphaToTarget()
-{
-    ResetGLState();
-
-    SetRenderTarget(0);
-    glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
-    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
-    glViewport(0, 0, GetTargetWidth(), GetTargetHeight());
-
-    // disable all other stages
-    for (int i = 1; i < 8; ++i)
-		TextureMngr::DisableStage(i);
-    // texture map s_RenderTargets[s_curtarget] onto the main buffer
-    glActiveTexture(GL_TEXTURE0);
-	glEnable(GL_TEXTURE_RECTANGLE_ARB);
-    glBindTexture(GL_TEXTURE_RECTANGLE_ARB, s_FakeZTarget);
-    GL_REPORT_ERRORD();
-
-	// setup the stencil to only accept pixels that have been written
-	glStencilFunc(GL_EQUAL, 1, 0xff);
-	glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-
-	// TODO: This code should not have to bother with stretchtofit checking - 
-	// all necessary scale initialization should be done elsewhere.
-	if (s_bNativeResolution)
-	{
-		//TODO: Do Correctly in a bit
-        float FactorW = 640.f / (float)OpenGL_GetBackbufferWidth();
-		float FactorH = 480.f / (float)OpenGL_GetBackbufferHeight();
-
-		float Max = (FactorW < FactorH) ? FactorH : FactorW;
-		float Temp = 1.0f / Max;
-		FactorW *= Temp;
-		FactorH *= Temp;
-
-		glBegin(GL_QUADS);
-		glTexCoord2f(0, 0); glVertex2f(-FactorW,-FactorH);
-		glTexCoord2f(0, (float)GetTargetHeight()); glVertex2f(-FactorW,FactorH);
-		glTexCoord2f((float)GetTargetWidth(), (float)GetTargetHeight()); glVertex2f(FactorW,FactorH);
-		glTexCoord2f((float)GetTargetWidth(), 0); glVertex2f(FactorW,-FactorH);
-	    glEnd();
-	}
-	else
-	{		
-		glBegin(GL_QUADS);
-		glTexCoord2f(0, 0); glVertex2f(-1,-1);
-		glTexCoord2f(0, (float)(GetTargetHeight())); glVertex2f(-1,1);
-		glTexCoord2f((float)(GetTargetWidth()), (float)(GetTargetHeight())); glVertex2f(1,1);
-		glTexCoord2f((float)(GetTargetWidth()), 0); glVertex2f(1,-1);
-	    glEnd();
-	}
-    
-    GL_REPORT_ERRORD();
-
-    glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
-    RestoreGLState();
-}
-
-void Renderer::SetRenderMode(RenderMode mode)
-{
-    if (!s_bHaveStencilBuffer && mode == RM_ZBufferAlpha)
-        mode = RM_ZBufferOnly;
-
-    if (s_RenderMode == mode)
-        return;
-
-    if (mode == RM_Normal) {
-        // flush buffers
-        if (s_RenderMode == RM_ZBufferAlpha) {
-            FlushZBufferAlphaToTarget();
-            glDisable(GL_STENCIL_TEST);
-        }
-        SetColorMask();
-        SetRenderTarget(0);
-        SetZBufferRender();
-        GL_REPORT_ERRORD();
-    }
-    else if (s_RenderMode == RM_Normal) {
-        // setup buffers
-        _assert_(UseFakeZTarget() && bpmem.zmode.updateenable);
-        if (mode == RM_ZBufferAlpha) {
-            glEnable(GL_STENCIL_TEST);
-            glClearStencil(0);
-            glClear(GL_STENCIL_BUFFER_BIT);
-            glStencilFunc(GL_ALWAYS, 1, 0xff);
-            glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
-        }
-
-        glDrawBuffer(GL_COLOR_ATTACHMENT1_EXT);
-        glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
-        GL_REPORT_ERRORD();
-    }
-    else {
-        _assert_(UseFakeZTarget());
-        _assert_(s_bHaveStencilBuffer);
-
-        if (mode == RM_ZBufferOnly) {
-            // flush and remove stencil
-            _assert_(s_RenderMode == RM_ZBufferAlpha);
-            FlushZBufferAlphaToTarget();
-            glDisable(GL_STENCIL_TEST);
-
-            SetRenderTarget(s_FakeZTarget);
-            glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
-            GL_REPORT_ERRORD();
-        }
-        else {
-            _assert_(mode == RM_ZBufferAlpha && s_RenderMode == RM_ZBufferOnly);
-            
-            // setup stencil
-            glEnable(GL_STENCIL_TEST);
-            glClearStencil(0);
-            glClear(GL_STENCIL_BUFFER_BIT);
-            glStencilFunc(GL_ALWAYS, 1, 0xff);
-            glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
-        }
-    }
-
-    s_RenderMode = mode;
-}
-
-Renderer::RenderMode Renderer::GetRenderMode()
-{
-    return s_RenderMode;
-}
-
 void ComputeBackbufferRectangle(TRectangle *rc)
 {
 	float FloatGLWidth = (float)OpenGL_GetBackbufferWidth();
@@ -1021,8 +848,6 @@ void Renderer::Swap(const TRectangle& rc)
     OpenGL_Update(); // just updates the render window position and the backbuffer size
     DVSTARTPROFILE();
 
-    Renderer::SetRenderMode(Renderer::RM_Normal);
-
     ResetGLState();
 
 	TRectangle back_rc;
@@ -1412,17 +1237,6 @@ void Renderer::SwapBuffers()
 
 	// Render to the framebuffer.
     glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, s_uFramebuffer);
-    if (nZBufferRender > 0) 
-	{
-        if (--nZBufferRender == 0) 
-		{
-            // turn off
-            nZBufferRender = 0;
-            glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
-            glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, GL_TEXTURE_RECTANGLE_ARB, 0, 0);
-            Renderer::SetRenderMode(RM_Normal);  // turn off any zwrites
-        }
-    }
 
 	GL_REPORT_ERRORD();
 }
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/Render.h b/Source/Plugins/Plugin_VideoOGL/Src/Render.h
index 298a08f872..60a6b6de83 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/Render.h
+++ b/Source/Plugins/Plugin_VideoOGL/Src/Render.h
@@ -41,19 +41,9 @@ extern int frameCount;
 
 class Renderer
 {
-private:
-    static void FlushZBufferAlphaToTarget();
 
 public:
-    enum RenderMode
-    {
-        RM_Normal=0,     // normal target as color0, ztarget as color1
-        RM_ZBufferOnly,  // zbuffer as color0
-        RM_ZBufferAlpha, // zbuffer as color0, also will dump alpha info to regular target once mode is switched
-                         // use stencil buffer to indicate what pixels were written
-    };
-
-	static bool Init();
+    static bool Init();
     static void Shutdown();
 
     // initialize opengl standard values (like viewport)
@@ -65,15 +55,11 @@ public:
 	static void SwapBuffers();
 
 	static bool IsUsingATIDrawBuffers();
-    static bool HaveStencilBuffer();
 
     static void SetColorMask();
 	static void SetBlendMode(bool forceUpdate);
 	static bool SetScissorRect();
 
-    static void SetRenderMode(RenderMode mode);
-    static RenderMode GetRenderMode();
-
 	// Render target management
     static int GetTargetWidth();
     static int GetTargetHeight();
@@ -83,9 +69,7 @@ public:
     static float GetTargetScaleY();
 
     static void SetFramebuffer(GLuint fb);
-	static void SetZBufferRender(); // sets rendering of the zbuffer using MRTs
     static void SetRenderTarget(GLuint targ); // if targ is 0, sets to original render target
-    static void SetDepthTarget(GLuint targ);
 
 	// If in MSAA mode, this will perform a resolve of the specified rectangle, and return the resolve target as a texture ID.
 	// Thus, this call may be expensive. Don't repeat it unnecessarily.
@@ -93,10 +77,9 @@ public:
 	// After calling this, before you render anything else, you MUST bind the framebuffer you want to draw to.
 	static GLuint ResolveAndGetRenderTarget(const TRectangle &rect);
 
-	// Same as above but for the FakeZ Target.
+	// Same as above but for the depth Target.
 	// After calling this, before you render anything else, you MUST bind the framebuffer you want to draw to.
-    static GLuint ResolveAndGetFakeZTarget(const TRectangle &rect);
-    static bool UseFakeZTarget();  // This is used by some functions to check for Z target existence.
+    static GLuint ResolveAndGetDepthTarget(const TRectangle &rect);
 
 	// Random utilities
     static void RenderText(const char* pstr, int left, int top, u32 color);
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/TextureConversionShader.cpp b/Source/Plugins/Plugin_VideoOGL/Src/TextureConversionShader.cpp
index be690ec116..12e6e7e913 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/TextureConversionShader.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/TextureConversionShader.cpp
@@ -165,6 +165,51 @@ void WriteSwizzler(char*& p, u32 format)
 	         "  sampleUv.y = sampleUv.y + textureDims.w;\n");
 }
 
+// block dimensions : widthStride, heightStride 
+// texture dims : width, height, x offset, y offset
+void Write32BitSwizzler(char*& p, u32 format)
+{
+    WRITE(p, "uniform float4 blkDims : register(c%d);\n", C_COLORMATRIX);
+	WRITE(p, "uniform float4 textureDims : register(c%d);\n", C_COLORMATRIX + 1);
+
+    float blkW = (float)GetBlockWidthInTexels(format);
+	float blkH = (float)GetBlockHeightInTexels(format);
+	float samples = (float)GetEncodedSampleCount(format);
+
+	// 32 bit textures (RGBA8 and Z24) are store in 2 cache line increments
+
+	WRITE(p, 
+	"uniform samplerRECT samp0 : register(s0);\n"
+	"void main(\n"
+	"  out float4 ocol0 : COLOR0,\n"
+	"  in float2 uv0 : TEXCOORD0)\n"
+	"{\n"
+    "  float2 sampleUv;\n"
+	"  float2 uv1 = floor(uv0);\n");
+	
+	WRITE(p, "  float yl = floor(uv1.y / %f);\n", blkH);
+	WRITE(p, "  float yb = yl * %f;\n", blkH);
+	WRITE(p, "  float yoff = uv1.y - yb;\n");
+	WRITE(p, "  float xp = uv1.x + (yoff * textureDims.x);\n");
+	WRITE(p, "  float xel = floor(xp / 2);\n");
+	WRITE(p, "  float xb = floor(xel / %f);\n", blkH);
+	WRITE(p, "  float xoff = xel - (xb * %f);\n", blkH);
+	
+	WRITE(p, "  float x2 = uv1.x * 2;\n");
+	WRITE(p, "  float xl = floor(x2 / %f);\n", blkW);	
+	WRITE(p, "  float xib = x2 - (xl * %f);\n", blkW);
+	WRITE(p, "  float halfxb = floor(xb / 2);\n");
+
+	
+	WRITE(p, "  sampleUv.x = xib + (halfxb * %f);\n", blkW);
+	WRITE(p, "  sampleUv.y = yb + xoff;\n");
+	WRITE(p, "  sampleUv = sampleUv * blkDims.xy;\n");
+	WRITE(p, "  sampleUv.y = textureDims.y - sampleUv.y;\n");
+	
+	WRITE(p, "  sampleUv.x = sampleUv.x + textureDims.z;\n");
+	WRITE(p, "  sampleUv.y = sampleUv.y + textureDims.w;\n");
+}
+
 void WriteSampleColor(char*& p, const char* colorComp, const char* dest)
 {
 	WRITE(p, "  %s = texRECT(samp0, sampleUv).%s;\n", dest, colorComp);
@@ -432,48 +477,9 @@ void WriteRGBA4443Encoder(char* p)
 	WRITE(p, "}\n");
 }
 
-// block dimensions : widthStride, heightStride 
-// texture dims : width, height, x offset, y offset
-void WriteRGBA8Encoder(char* p, bool fromDepth)
+void WriteRGBA8Encoder(char* p)
 {
-	WRITE(p, "uniform float4 blkDims : register(c%d);\n", C_COLORMATRIX);
-	WRITE(p, "uniform float4 textureDims : register(c%d);\n", C_COLORMATRIX + 1);
-
-    float blkW = (float)GetBlockWidthInTexels(GX_TF_RGBA8);
-	float blkH = (float)GetBlockHeightInTexels(GX_TF_RGBA8);
-	float samples = (float)GetEncodedSampleCount(GX_TF_RGBA8);
-
-	// Swizzling for RGBA8 format
-	WRITE(p, 
-	"uniform samplerRECT samp0 : register(s0);\n"
-	"void main(\n"
-	"  out float4 ocol0 : COLOR0,\n"
-	"  in float2 uv0 : TEXCOORD0)\n"
-	"{\n"
-    "  float2 sampleUv;\n"
-	"  float2 uv1 = floor(uv0);\n");
-	
-	WRITE(p, "  float yl = floor(uv1.y / %f);\n", blkH);
-	WRITE(p, "  float yb = yl * %f;\n", blkH);
-	WRITE(p, "  float yoff = uv1.y - yb;\n");
-	WRITE(p, "  float xp = uv1.x + (yoff * textureDims.x);\n");
-	WRITE(p, "  float xel = floor(xp / 2);\n");
-	WRITE(p, "  float xb = floor(xel / %f);\n", blkH);
-	WRITE(p, "  float xoff = xel - (xb * %f);\n", blkH);
-	
-	WRITE(p, "  float x2 = uv1.x * 2;\n");
-	WRITE(p, "  float xl = floor(x2 / %f);\n", blkW);	
-	WRITE(p, "  float xib = x2 - (xl * %f);\n", blkW);
-	WRITE(p, "  float halfxb = floor(xb / 2);\n");
-
-	
-	WRITE(p, "  sampleUv.x = xib + (halfxb * %f);\n", blkW);
-	WRITE(p, "  sampleUv.y = yb + xoff;\n");
-	WRITE(p, "  sampleUv = sampleUv * blkDims.xy;\n");
-	WRITE(p, "  sampleUv.y = textureDims.y - sampleUv.y;\n");
-	
-	WRITE(p, "  sampleUv.x = sampleUv.x + textureDims.z;\n");
-	WRITE(p, "  sampleUv.y = sampleUv.y + textureDims.w;\n");
+	Write32BitSwizzler(p, GX_TF_RGBA8);
 
 	WRITE(p, "  float cl1 = xb - (halfxb * 2);\n");
 	WRITE(p, "  float cl0 = 1.0f - cl1;\n");
@@ -483,10 +489,7 @@ void WriteRGBA8Encoder(char* p, bool fromDepth)
 	WRITE(p, "  float4 color1;\n");
 
 	WriteSampleColor(p, "rgba", "texSample");
-	if(fromDepth)
-		WRITE(p, "  color0.b = 1.0f;\n");
-	else
-		WRITE(p, "  color0.b = texSample.a;\n");
+	WRITE(p, "  color0.b = texSample.a;\n");
 	WRITE(p, "  color0.g = texSample.r;\n");
 	WRITE(p, "  color1.b = texSample.g;\n");
 	WRITE(p, "  color1.g = texSample.b;\n");
@@ -494,10 +497,7 @@ void WriteRGBA8Encoder(char* p, bool fromDepth)
 	WriteIncrementSampleX(p);
 
 	WriteSampleColor(p, "rgba", "texSample");
-	if(fromDepth)
-		WRITE(p, "  color0.r = 1.0f;\n");
-	else
-		WRITE(p, "  color0.r = texSample.a;\n");
+	WRITE(p, "  color0.r = texSample.a;\n");
 	WRITE(p, "  color0.a = texSample.r;\n");
 	WRITE(p, "  color1.r = texSample.g;\n");
 	WRITE(p, "  color1.a = texSample.b;\n");
@@ -606,6 +606,101 @@ void WriteCC8Encoder(char* p, const char* comp)
 	WRITE(p, "}\n");
 }
 
+void WriteZ8Encoder(char* p, const char* multiplier)
+{
+	WriteSwizzler(p, GX_CTF_Z8M);
+
+    WRITE(p, " float depth;\n");
+
+	WriteSampleColor(p, "b", "depth");
+    WRITE(p, "ocol0.b = frac(depth * %s);\n", multiplier);
+	WriteIncrementSampleX(p);
+
+    WriteSampleColor(p, "b", "depth");
+    WRITE(p, "ocol0.g = frac(depth * %s);\n", multiplier);
+	WriteIncrementSampleX(p);
+
+    WriteSampleColor(p, "b", "depth");
+    WRITE(p, "ocol0.r = frac(depth * %s);\n", multiplier);
+	WriteIncrementSampleX(p);
+
+    WriteSampleColor(p, "b", "depth");
+    WRITE(p, "ocol0.a = frac(depth * %s);\n", multiplier);
+
+	WRITE(p, "}\n");
+}
+
+void WriteZ16Encoder(char* p)
+{
+    WriteSwizzler(p, GX_TF_Z16);
+
+    WRITE(p, " float depth;\n");
+
+    // byte order is reversed
+
+    WriteSampleColor(p, "b", "depth");
+    WRITE(p, "  ocol0.b = frac(depth * 256.0f);\n");
+    WRITE(p, "  ocol0.g = depth;\n");
+
+    WriteIncrementSampleX(p);
+
+    WriteSampleColor(p, "b", "depth");
+    WRITE(p, "  ocol0.r = frac(depth * 256.0f);\n");
+    WRITE(p, "  ocol0.a = depth;\n");    
+
+    WRITE(p, "}\n");
+}
+
+void WriteZ16LEncoder(char* p)
+{
+    WriteSwizzler(p, GX_CTF_Z16L);
+
+    WRITE(p, " float depth;\n");
+
+    // byte order is reversed
+
+    WriteSampleColor(p, "b", "depth");
+    WRITE(p, "  ocol0.b = frac(depth * 65536.0f);\n");
+    WRITE(p, "  ocol0.g = frac(depth * 256.0f);\n");
+
+    WriteIncrementSampleX(p);
+
+    WriteSampleColor(p, "b", "depth");
+    WRITE(p, "  ocol0.r = frac(depth * 65536.0f);\n");
+    WRITE(p, "  ocol0.a = frac(depth * 256.0f);\n");    
+
+    WRITE(p, "}\n");
+}
+
+void WriteZ24Encoder(char* p)
+{
+	Write32BitSwizzler(p, GX_TF_Z24X8);
+
+	WRITE(p, "  float cl = xb - (halfxb * 2);\n");
+
+	WRITE(p, "  float depth0;\n");
+    WRITE(p, "  float depth1;\n");
+
+	WriteSampleColor(p, "b", "depth0");
+    WriteIncrementSampleX(p);
+    WriteSampleColor(p, "b", "depth1");
+
+    WRITE(p, "  if(cl > 0.5f) {\n");
+    // upper 16
+    WRITE(p, "     ocol0.b = frac(depth0 * 256.0f);\n");
+    WRITE(p, "     ocol0.g = depth0\n");
+    WRITE(p, "     ocol0.r = frac(depth1 * 256.0f);\n");
+    WRITE(p, "     ocol0.a = depth1\n");
+    WRITE(p, "  } else {\n");
+    // lower 8
+    WRITE(p, "     ocol0.b = 1.0f;\n");
+    WRITE(p, "     ocol0.g = frac(depth0 * 65536.0f)\n");
+    WRITE(p, "     ocol0.r = 1.0f);\n");
+    WRITE(p, "     ocol0.a = frac(depth0 * 65536.0f)\n");
+    WRITE(p, "  }\n"
+             "}\n");
+}
+
 const char *GenerateEncodingShader(u32 format)
 {
 	text[sizeof(text) - 1] = 0x7C;  // canary
@@ -633,7 +728,7 @@ const char *GenerateEncodingShader(u32 format)
 		WriteRGB5A3Encoder(p);
 		break;
 	case GX_TF_RGBA8:
-		WriteRGBA8Encoder(p, false);
+		WriteRGBA8Encoder(p);
 		break;
 	case GX_CTF_R4:
 		WriteC4Encoder(p, "r");
@@ -666,24 +761,22 @@ const char *GenerateEncodingShader(u32 format)
 		WriteC8Encoder(p, "b");
 		break;
 	case GX_TF_Z16:
-		// byte order is reversed
-		WriteCC8Encoder(p, "gb");
+		WriteZ16Encoder(p);
 		break;
 	case GX_TF_Z24X8:
-		WriteRGBA8Encoder(p, true);
+		WriteZ24Encoder(p);
 		break;
 	case GX_CTF_Z4:
 		WriteC4Encoder(p, "b");
 		break;
 	case GX_CTF_Z8M:
-		WriteC8Encoder(p, "g");
+		WriteZ8Encoder(p, "256.0f");
 		break;
 	case GX_CTF_Z8L:
-		WriteC8Encoder(p, "r");
+		WriteZ8Encoder(p, "65536.0f" );
 		break;
 	case GX_CTF_Z16L:
-		// byte order is reversed
-		WriteCC8Encoder(p, "rg");
+		WriteZ16LEncoder(p);
 		break;
 	default:
 		PanicAlert("Unknown texture copy format: 0x%x\n", format);
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/TextureConverter.cpp b/Source/Plugins/Plugin_VideoOGL/Src/TextureConverter.cpp
index 5a70a0088a..b6b51b2321 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/TextureConverter.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/TextureConverter.cpp
@@ -160,8 +160,6 @@ void Shutdown()
 void EncodeToRamUsingShader(FRAGMENTSHADER& shader, GLuint srcTexture, const TRectangle& sourceRc,
 				            u8* destAddr, int dstWidth, int dstHeight, bool linearFilter)
 {
-	Renderer::SetRenderMode(Renderer::RM_Normal);
-
 	Renderer::ResetGLState();
 	
 	// switch to texture converter frame buffer
@@ -243,7 +241,7 @@ void EncodeToRam(u32 address, bool bFromZBuffer, bool bIsIntensityFmt, u32 copyf
 
 	u8 *dest_ptr = Memory_GetPtr(address);
 
-	u32 source_texture = bFromZBuffer ? Renderer::ResolveAndGetFakeZTarget(source) : Renderer::ResolveAndGetRenderTarget(source);
+	u32 source_texture = bFromZBuffer ? Renderer::ResolveAndGetDepthTarget(source) : Renderer::ResolveAndGetRenderTarget(source);
 	int width = source.right - source.left;
 	int height = source.bottom - source.top;
 
@@ -288,9 +286,6 @@ void EncodeToRam(u32 address, bool bFromZBuffer, bool bIsIntensityFmt, u32 copyf
 	scaledSource.right = expandedWidth / samples;
 
 	EncodeToRamUsingShader(texconv_shader, source_texture, scaledSource, dest_ptr, expandedWidth / samples, expandedHeight, bScaleByHalf);
-
-	if (bFromZBuffer)
-        Renderer::SetZBufferRender(); // notify for future settings
 }
 
 void EncodeToRamYUYV(GLuint srcTexture, const TRectangle& sourceRc,
@@ -303,7 +298,6 @@ void EncodeToRamYUYV(GLuint srcTexture, const TRectangle& sourceRc,
 // Should be scale free.
 void DecodeToTexture(u8* srcAddr, int srcWidth, int srcHeight, GLuint destTexture)
 {
-	Renderer::SetRenderMode(Renderer::RM_Normal);
 	Renderer::ResetGLState();
 
 	float srcFormatFactor = 0.5f;
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/TextureMngr.cpp b/Source/Plugins/Plugin_VideoOGL/Src/TextureMngr.cpp
index db81ff5ff4..c8ae106990 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/TextureMngr.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/TextureMngr.cpp
@@ -55,7 +55,6 @@
 
 u8 *TextureMngr::temp = NULL;
 TextureMngr::TexCache TextureMngr::textures;
-std::map<u32, TextureMngr::DEPTHTARGET> TextureMngr::mapDepthTargets;
 
 extern int frameCount;
 static u32 s_TempFramebuffer = 0;
@@ -176,13 +175,6 @@ void TextureMngr::Shutdown()
 {
     Invalidate(true);
 
-    std::map<u32, DEPTHTARGET>::iterator itdepth = mapDepthTargets.begin();
-	for (itdepth = mapDepthTargets.begin(); itdepth != mapDepthTargets.end(); ++itdepth)
-	{
-		glDeleteRenderbuffersEXT(1, &itdepth->second.targ);
-	}
-    mapDepthTargets.clear();
-
     if (s_TempFramebuffer) {
         glDeleteFramebuffersEXT(1, (GLuint *)&s_TempFramebuffer);
         s_TempFramebuffer = 0;
@@ -217,14 +209,6 @@ void TextureMngr::ProgressiveCleanup()
         else
             iter++;
     }
-
-    std::map<u32, DEPTHTARGET>::iterator itdepth = mapDepthTargets.begin();
-    while (itdepth != mapDepthTargets.end())
-	{
-        if (frameCount > 20 + itdepth->second.framecount)
-			ERASE_THROUGH_ITERATOR(mapDepthTargets, itdepth);
-        else ++itdepth;
-    }
 }
 
 void TextureMngr::InvalidateRange(u32 start_address, u32 size) {
@@ -588,8 +572,9 @@ void TextureMngr::CopyRenderTargetToTexture(u32 address, bool bFromZBuffer, bool
                 break;
             
             case 3: // Z16 //?
-            case 11: // Z16
                 colmat[1] = colmat[5] = colmat[9] = colmat[14] = 1;
+            case 11: // Z16 (reverse order)
+                colmat[2] = colmat[6] = colmat[10] = colmat[13] = 1;
                 break;
             case 6: // Z24X8
                 colmat[0] = 1;
@@ -702,9 +687,8 @@ void TextureMngr::CopyRenderTargetToTexture(u32 address, bool bFromZBuffer, bool
 
 	// Make sure to resolve anything we need to read from.
 	// TODO - it seems that it sometimes doesn't resolve the entire area we are interested in. See shadows in Burnout 2.
-	GLuint read_texture = bFromZBuffer ? Renderer::ResolveAndGetFakeZTarget(scaled_rect) : Renderer::ResolveAndGetRenderTarget(scaled_rect);
+	GLuint read_texture = bFromZBuffer ? Renderer::ResolveAndGetDepthTarget(scaled_rect) : Renderer::ResolveAndGetRenderTarget(scaled_rect);
 
-    Renderer::SetRenderMode(Renderer::RM_Normal); // set back to normal
     GL_REPORT_ERRORD();
 
     // We have to run a pixel shader, for color conversion.
@@ -716,29 +700,7 @@ void TextureMngr::CopyRenderTargetToTexture(u32 address, bool bFromZBuffer, bool
     Renderer::SetFramebuffer(s_TempFramebuffer);
     Renderer::SetRenderTarget(entry.texture);
     GL_REPORT_ERRORD();
-
-    // create and attach the render target
-    std::map<u32, DEPTHTARGET>::iterator itdepth = mapDepthTargets.find((h << 16) | w);
-    if (itdepth == mapDepthTargets.end()) 
-	{
-        DEPTHTARGET& depth = mapDepthTargets[(h << 16) | w];
-        depth.framecount = frameCount;
-
-        glGenRenderbuffersEXT(1, &depth.targ);
-        glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depth.targ);
-        glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, w, h);
-        GL_REPORT_ERRORD();
-
-        Renderer::SetDepthTarget(depth.targ);
-        GL_REPORT_ERRORD();
-    }
-    else 
-	{
-        itdepth->second.framecount = frameCount;
-        Renderer::SetDepthTarget(itdepth->second.targ);
-        GL_REPORT_ERRORD();
-    }
-
+    
     glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
     glActiveTexture(GL_TEXTURE0);
 	glEnable(GL_TEXTURE_RECTANGLE_ARB);
@@ -747,7 +709,7 @@ void TextureMngr::CopyRenderTargetToTexture(u32 address, bool bFromZBuffer, bool
     glViewport(0, 0, w, h);
 
     glEnable(GL_FRAGMENT_PROGRAM_ARB);
-    glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, PixelShaderCache::GetColorMatrixProgram());
+    glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, bFromZBuffer ? PixelShaderCache::GetDepthMatrixProgram() : PixelShaderCache::GetColorMatrixProgram());
     PixelShaderManager::SetColorMatrix(colmat, fConstAdd); // set transformation
     GL_REPORT_ERRORD();
 
@@ -765,9 +727,6 @@ void TextureMngr::CopyRenderTargetToTexture(u32 address, bool bFromZBuffer, bool
     VertexShaderManager::SetViewportChanged();
     TextureMngr::DisableStage(0);
 
-    if (bFromZBuffer)
-        Renderer::SetZBufferRender(); // notify for future settings
-
     GL_REPORT_ERRORD();
 
 	if (g_Config.bDumpEFBTarget)
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/TextureMngr.h b/Source/Plugins/Plugin_VideoOGL/Src/TextureMngr.h
index e46ba59d95..0fb6c5e80d 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/TextureMngr.h
+++ b/Source/Plugins/Plugin_VideoOGL/Src/TextureMngr.h
@@ -57,19 +57,11 @@ public:
 		bool IntersectsMemoryRange(u32 range_address, u32 range_size);
     };
 
-    struct DEPTHTARGET
-    {
-        DEPTHTARGET() : targ(0), framecount(0) {}
-        GLuint targ;
-        int framecount;
-    };
-
 private:
     typedef std::map<u32, TCacheEntry> TexCache;
 
     static u8 *temp;
     static TexCache textures;
-	static std::map<u32, DEPTHTARGET> mapDepthTargets;
 
 public:
     static void Init();
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/VertexManager.cpp b/Source/Plugins/Plugin_VideoOGL/Src/VertexManager.cpp
index cd5452634e..a81151eb58 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/VertexManager.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/VertexManager.cpp
@@ -257,29 +257,6 @@ void Flush()
 	FRAGMENTSHADER* ps = PixelShaderCache::GetShader(false);
 	VERTEXSHADER* vs = VertexShaderCache::GetShader(g_nativeVertexFmt->m_components);
 
-	bool bRestoreBuffers = false;
-	if (Renderer::UseFakeZTarget()) 
-	{
-		if (bpmem.zmode.updateenable) 
-		{
-			if (!bpmem.blendmode.colorupdate) 
-			{
-				Renderer::SetRenderMode(bpmem.blendmode.alphaupdate ?
-										Renderer::RM_ZBufferAlpha :
-										Renderer::RM_ZBufferOnly);    
-			}
-		}
-		else 
-		{
-			Renderer::SetRenderMode(Renderer::RM_Normal);
-			// remove temporarily
-			glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
-			bRestoreBuffers = true;
-		}
-	} 
-	else 
-		Renderer::SetRenderMode(Renderer::RM_Normal);
-
 	// set global constants
     VertexShaderManager::SetConstants(g_Config.bProjHack1,g_Config.bPhackvalue1, g_Config.fhackvalue1, g_Config.bPhackvalue2, g_Config.fhackvalue2, g_Config.bFreeLook);
 	PixelShaderManager::SetConstants();
@@ -330,8 +307,7 @@ void Flush()
 	    }
 
         // restore color mask
-        if (!bRestoreBuffers)
-            Renderer::SetColorMask();
+        Renderer::SetColorMask();
 
         if (bpmem.blendmode.blendenable || bpmem.blendmode.subtract) 
             glEnable(GL_BLEND);
@@ -361,13 +337,6 @@ void Flush()
 
 	GL_REPORT_ERRORD();
 
-	if (bRestoreBuffers) 
-	{
-		GLenum s_drawbuffers[2] = {GL_COLOR_ATTACHMENT0_EXT, GL_COLOR_ATTACHMENT1_EXT};
-		glDrawBuffers(2, s_drawbuffers);
-		Renderer::SetColorMask();
-	}
-
 	ResetBuffer();
 }
 
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/VertexShaderCache.cpp b/Source/Plugins/Plugin_VideoOGL/Src/VertexShaderCache.cpp
index 5a780f7929..3e94fdfcdd 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/VertexShaderCache.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/VertexShaderCache.cpp
@@ -71,8 +71,7 @@ VERTEXSHADER* VertexShaderCache::GetShader(u32 components)
 {
 	DVSTARTPROFILE();
 	VERTEXSHADERUID uid;
-	u32 zbufrender = (bpmem.ztex2.op == ZTEXTURE_ADD) || Renderer::UseFakeZTarget();
-	GetVertexShaderId(uid, components, zbufrender);
+	GetVertexShaderId(uid, components);
 
 	VSCache::iterator iter = vshaders.find(uid);
 
@@ -86,7 +85,7 @@ VERTEXSHADER* VertexShaderCache::GetShader(u32 components)
 	}
 
 	VSCacheEntry& entry = vshaders[uid];
-	const char *code = GenerateVertexShader(components, Renderer::UseFakeZTarget());
+	const char *code = GenerateVertexShader(components);
 
 #if defined(_DEBUG) || defined(DEBUGFAST)
 	if (g_Config.iLog & CONF_SAVESHADERS && code) {