merge

8 files changed, 258 insertions, 97 deletions

diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index f5e85aecda..378147eadc 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -49,6 +49,7 @@ U32 LLVertexBuffer::sSetCount = 0;
 S32 LLVertexBuffer::sCount = 0;
 S32 LLVertexBuffer::sGLCount = 0;
 S32 LLVertexBuffer::sMappedCount = 0;
+BOOL LLVertexBuffer::sDisableVBOMapping = FALSE ;
 BOOL LLVertexBuffer::sEnableVBOs = TRUE;
 U32 LLVertexBuffer::sGLRenderBuffer = 0;
 U32 LLVertexBuffer::sGLRenderIndices = 0;
@@ -351,9 +352,10 @@ void LLVertexBuffer::drawArrays(U32 mode, U32 first, U32 count) const
 }
 
 //static
-void LLVertexBuffer::initClass(bool use_vbo)
+void LLVertexBuffer::initClass(bool use_vbo, bool no_vbo_mapping)
 {
 	sEnableVBOs = use_vbo;
+	sDisableVBOMapping = sEnableVBOs && no_vbo_mapping ;
 	LLGLNamePool::registerPool(&sDynamicVBOPool);
 	LLGLNamePool::registerPool(&sDynamicIBOPool);
 	LLGLNamePool::registerPool(&sStreamVBOPool);
@@ -386,6 +388,8 @@ void LLVertexBuffer::cleanupClass()
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_CLEANUP_CLASS);
 	unbind();
 	clientCopy(); // deletes GL buffers
+
+	//llassert_always(!sCount) ;
 }
 
 void LLVertexBuffer::clientCopy(F64 max_time)
@@ -410,7 +414,9 @@ LLVertexBuffer::LLVertexBuffer(U32 typemask, S32 usage) :
 	mGLBuffer(0),
 	mGLIndices(0), 
 	mMappedData(NULL),
-	mMappedIndexData(NULL), mLocked(FALSE),
+	mMappedIndexData(NULL), 
+	mVertexLocked(FALSE),
+	mIndexLocked(FALSE),
 	mFinal(FALSE),
 	mFilthy(FALSE),
 	mEmpty(TRUE),
@@ -497,6 +503,8 @@ LLVertexBuffer::~LLVertexBuffer()
 	destroyGLBuffer();
 	destroyGLIndices();
 	sCount--;
+
+	llassert_always(!mMappedData && !mMappedIndexData) ;
 };
 
 //----------------------------------------------------------------------------
@@ -645,6 +653,8 @@ void LLVertexBuffer::destroyGLBuffer()
 	{
 		if (useVBOs())
 		{
+			freeClientBuffer() ;
+
 			if (mMappedData || mMappedIndexData)
 			{
 				llerrs << "Vertex buffer destroyed while mapped!" << llendl;
@@ -672,6 +682,8 @@ void LLVertexBuffer::destroyGLIndices()
 	{
 		if (useVBOs())
 		{
+			freeClientBuffer() ;
+
 			if (mMappedData || mMappedIndexData)
 			{
 				llerrs << "Vertex buffer destroyed while mapped." << llendl;
@@ -848,6 +860,7 @@ void LLVertexBuffer::resizeBuffer(S32 newnverts, S32 newnindices)
 
 	if (mResized && useVBOs())
 	{
+		freeClientBuffer() ;
 		setBuffer(0);
 	}
 }
@@ -871,43 +884,69 @@ BOOL LLVertexBuffer::useVBOs() const
 }
 
 //----------------------------------------------------------------------------
+void LLVertexBuffer::freeClientBuffer()
+{
+	if(useVBOs() && sDisableVBOMapping && (mMappedData || mMappedIndexData))
+	{
+		free(mMappedData) ;
+		free(mMappedIndexData) ;
+		mMappedData = NULL ;
+		mMappedIndexData = NULL ;
+	}
+}
+
+void LLVertexBuffer::allocateClientVertexBuffer()
+{
+	if(!mMappedData)
+	{
+		mMappedData = (U8*)malloc(getSize());
+	}
+}
+
+void LLVertexBuffer::allocateClientIndexBuffer()
+{
+	if(!mMappedIndexData)
+	{
+		mMappedIndexData = (U8*)malloc(getIndicesSize());
+	}
+}
 
 // Map for data access
-U8* LLVertexBuffer::mapBuffer(S32 access)
+U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 access)
 {
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_MAP_BUFFER);
 	if (mFinal)
 	{
-		llerrs << "LLVertexBuffer::mapBuffer() called on a finalized buffer." << llendl;
+		llerrs << "LLVertexBuffer::mapVeretxBuffer() called on a finalized buffer." << llendl;
 	}
 	if (!useVBOs() && !mMappedData && !mMappedIndexData)
 	{
-		llerrs << "LLVertexBuffer::mapBuffer() called on unallocated buffer." << llendl;
+		llerrs << "LLVertexBuffer::mapVertexBuffer() called on unallocated buffer." << llendl;
 	}
 		
-	if (!mLocked && useVBOs())
+	if (!mVertexLocked && useVBOs())
 	{
 		{
 			LLMemType mt_v(LLMemType::MTYPE_VERTEX_MAP_BUFFER_VERTICES);
-			setBuffer(0);
-			mLocked = TRUE;
+			setBuffer(0, type);
+			mVertexLocked = TRUE;
 			stop_glerror();	
 
-			U8* src = (U8*) glMapBufferARB(GL_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB);
-			mMappedData = LL_NEXT_ALIGNED_ADDRESS<U8>(src);
-			mAlignedOffset = mMappedData - src;
+			if(sDisableVBOMapping)
+			{
+				allocateClientVertexBuffer() ;
+			}
+			else
+			{
+				U8* src = (U8*) glMapBufferARB(GL_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB);
+				mMappedData = LL_NEXT_ALIGNED_ADDRESS<U8>(src);
+				mAlignedOffset = mMappedData - src;
 			
-			stop_glerror();
-		}
-		{
-			LLMemType mt_v(LLMemType::MTYPE_VERTEX_MAP_BUFFER_INDICES);
-			U8* src = (U8*) glMapBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB);
-			mMappedIndexData = LL_NEXT_ALIGNED_ADDRESS<U8>(src);
-			mAlignedIndexOffset = mMappedIndexData - src;
-
-			stop_glerror();
+				stop_glerror();
+			}
 		}
-
+		
+		
 		if (!mMappedData)
 		{
 			log_glerror();
@@ -918,80 +957,167 @@ U8* LLVertexBuffer::mapBuffer(S32 access)
 			llinfos << "Available physical mwmory(KB): " << avail_phy_mem << llendl ; 
 			llinfos << "Available virtual memory(KB): " << avail_vir_mem << llendl;
 
-			//--------------------
-			//print out more debug info before crash
-			llinfos << "vertex buffer size: (num verts : num indices) = " << getNumVerts() << " : " << getNumIndices() << llendl ;
-			GLint size ;
-			glGetBufferParameterivARB(GL_ARRAY_BUFFER_ARB, GL_BUFFER_SIZE_ARB, &size) ;
-			llinfos << "GL_ARRAY_BUFFER_ARB size is " << size << llendl ;
-			//--------------------
+			if(!sDisableVBOMapping)
+			{			
+				//--------------------
+				//print out more debug info before crash
+				llinfos << "vertex buffer size: (num verts : num indices) = " << getNumVerts() << " : " << getNumIndices() << llendl ;
+				GLint size ;
+				glGetBufferParameterivARB(GL_ARRAY_BUFFER_ARB, GL_BUFFER_SIZE_ARB, &size) ;
+				llinfos << "GL_ARRAY_BUFFER_ARB size is " << size << llendl ;
+				//--------------------
 
-			GLint buff;
-			glGetIntegerv(GL_ARRAY_BUFFER_BINDING_ARB, &buff);
-			if ((GLuint)buff != mGLBuffer)
+				GLint buff;
+				glGetIntegerv(GL_ARRAY_BUFFER_BINDING_ARB, &buff);
+				if ((GLuint)buff != mGLBuffer)
+				{
+					llerrs << "Invalid GL vertex buffer bound: " << buff << llendl;
+				}
+
+							
+				llerrs << "glMapBuffer returned NULL (no vertex data)" << llendl;
+			}
+			else
 			{
-				llerrs << "Invalid GL vertex buffer bound: " << buff << llendl;
+				llerrs << "memory allocation for vertex data failed." << llendl ;
 			}
+		}
+		sMappedCount++;
+	}
+	
+	return mMappedData;
+}
 
-			
-			llerrs << "glMapBuffer returned NULL (no vertex data)" << llendl;
+U8* LLVertexBuffer::mapIndexBuffer(S32 access)
+{
+	LLMemType mt2(LLMemType::MTYPE_VERTEX_MAP_BUFFER);
+	if (mFinal)
+	{
+		llerrs << "LLVertexBuffer::mapIndexBuffer() called on a finalized buffer." << llendl;
+	}
+	if (!useVBOs() && !mMappedData && !mMappedIndexData)
+	{
+		llerrs << "LLVertexBuffer::mapIndexBuffer() called on unallocated buffer." << llendl;
+	}
+
+	if (!mIndexLocked && useVBOs())
+	{
+		{
+			LLMemType mt_v(LLMemType::MTYPE_VERTEX_MAP_BUFFER_INDICES);
+
+			setBuffer(0, TYPE_INDEX);
+			mIndexLocked = TRUE;
+			stop_glerror();	
+
+			if(sDisableVBOMapping)
+			{
+				allocateClientIndexBuffer() ;
+			}
+			else
+			{
+				U8* src = (U8*) glMapBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB);
+				mMappedIndexData = LL_NEXT_ALIGNED_ADDRESS<U8>(src);
+				mAlignedIndexOffset = mMappedIndexData - src;
+				stop_glerror();
+			}
 		}
 
 		if (!mMappedIndexData)
 		{
 			log_glerror();
 
-			GLint buff;
-			glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, &buff);
-			if ((GLuint)buff != mGLIndices)
+			if(!sDisableVBOMapping)
 			{
-				llerrs << "Invalid GL index buffer bound: " << buff << llendl;
-			}
+				GLint buff;
+				glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, &buff);
+				if ((GLuint)buff != mGLIndices)
+				{
+					llerrs << "Invalid GL index buffer bound: " << buff << llendl;
+				}
 
-			llerrs << "glMapBuffer returned NULL (no index data)" << llendl;
+				llerrs << "glMapBuffer returned NULL (no index data)" << llendl;
+			}
+			else
+			{
+				llerrs << "memory allocation for Index data failed. " << llendl ;
+			}
 		}
 
 		sMappedCount++;
 	}
-	
-	return mMappedData;
+
+	return mMappedIndexData ;
 }
 
-void LLVertexBuffer::unmapBuffer()
+void LLVertexBuffer::unmapBuffer(S32 type)
 {
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_UNMAP_BUFFER);
-	if (mMappedData || mMappedIndexData)
+	if (!useVBOs())
 	{
-		if (useVBOs() && mLocked)
+		return ; //nothing to unmap
+	}
+
+	bool updated_all = false ;
+	if (mMappedData && mVertexLocked && type != TYPE_INDEX)
+	{
+		updated_all = (mIndexLocked && type < 0) ; //both vertex and index buffers done updating
+
+		if(sDisableVBOMapping)
+		{
+			stop_glerror();
+			glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, getSize(), mMappedData);
+			stop_glerror();
+		}
+		else
 		{
 			stop_glerror();
 			glUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
 			stop_glerror();
+
+			mMappedData = NULL;
+		}
+
+		mVertexLocked = FALSE ;
+		sMappedCount--;
+	}
+
+	if(mMappedIndexData && mIndexLocked && (type < 0 || type == TYPE_INDEX))
+	{
+		if(sDisableVBOMapping)
+		{
+			stop_glerror();
+			glBufferSubDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0, getIndicesSize(), mMappedIndexData);
+			stop_glerror();
+		}
+		else
+		{
+			stop_glerror();
 			glUnmapBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB);
 			stop_glerror();
 
-			/*if (!sMapped)
-			{
-				llerrs << "Redundantly unmapped VBO!" << llendl;
-			}
-			sMapped = FALSE;*/
-			sMappedCount--;
-
-			if (mUsage == GL_STATIC_DRAW_ARB)
-			{ //static draw buffers can only be mapped a single time
-				//throw out client data (we won't be using it again)
-				mEmpty = TRUE;
-				mFinal = TRUE;
-			}
-			else
+			mMappedIndexData = NULL ;
+		}
+
+		mIndexLocked = FALSE ;
+		sMappedCount--;
+	}
+
+	if(updated_all)
+	{
+		if(mUsage == GL_STATIC_DRAW_ARB)
+		{
+			//static draw buffers can only be mapped a single time
+			//throw out client data (we won't be using it again)
+			mEmpty = TRUE;
+			mFinal = TRUE;
+			if(sDisableVBOMapping)
 			{
-				mEmpty = FALSE;
+				freeClientBuffer() ;
 			}
-
-			mMappedIndexData = NULL;
-			mMappedData = NULL;
-			
-			mLocked = FALSE;
+		}
+		else
+		{
+			mEmpty = FALSE;
 		}
 	}
 }
@@ -1005,15 +1131,16 @@ template <class T,S32 type> struct VertexBufferStrider
 					strider_t& strider, 
 					S32 index)
 	{
-		if (vbo.mapBuffer() == NULL)
-		{
-			llwarns << "mapBuffer failed!" << llendl;
-			return FALSE;
-		}
-
 		if (type == LLVertexBuffer::TYPE_INDEX)
 		{
 			S32 stride = sizeof(T);
+
+			if (vbo.mapIndexBuffer() == NULL)
+			{
+				llwarns << "mapIndexBuffer failed!" << llendl;
+				return FALSE;
+			}
+
 			strider = (T*)(vbo.getMappedIndices() + index*stride);
 			strider.setStride(0);
 			return TRUE;
@@ -1021,6 +1148,13 @@ template <class T,S32 type> struct VertexBufferStrider
 		else if (vbo.hasDataType(type))
 		{
 			S32 stride = LLVertexBuffer::sTypeSize[type];
+
+			if (vbo.mapVertexBuffer(type) == NULL)
+			{
+				llwarns << "mapVertexBuffer failed!" << llendl;
+				return FALSE;
+			}
+
 			strider = (T*)(vbo.getMappedData() + vbo.getOffset(type)+index*stride);
 			strider.setStride(stride);
 			return TRUE;
@@ -1087,7 +1221,7 @@ bool LLVertexBuffer::getClothWeightStrider(LLStrider<LLVector4>& strider, S32 in
 //----------------------------------------------------------------------------
 
 // Set for rendering
-void LLVertexBuffer::setBuffer(U32 data_mask)
+void LLVertexBuffer::setBuffer(U32 data_mask, S32 type)
 {
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_SET_BUFFER);
 	//set up pointers if the data mask is different ...
@@ -1228,7 +1362,7 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 		{
 			ll_fail("LLVertexBuffer::mapBuffer failed");
 		}
-		unmapBuffer();
+		unmapBuffer(type);
 	}
 	else
 	{		
diff --git a/indra/llrender/llvertexbuffer.h b/indra/llrender/llvertexbuffer.h
index 77c9da2d6c..2bbc17fb12 100644
--- a/indra/llrender/llvertexbuffer.h
+++ b/indra/llrender/llvertexbuffer.h
@@ -94,7 +94,7 @@ public:
 	static BOOL	sUseStreamDraw;
 	static BOOL	sPreferStreamDraw;
 
-	static void initClass(bool use_vbo);
+	static void initClass(bool use_vbo, bool no_vbo_mapping);
 	static void cleanupClass();
 	static void setupClientArrays(U32 data_mask);
  	static void clientCopy(F64 max_time = 0.005); //copy data from client to GL
@@ -158,19 +158,24 @@ protected:
 	void	updateNumVerts(S32 nverts);
 	void	updateNumIndices(S32 nindices); 
 	virtual BOOL	useVBOs() const;
-	void	unmapBuffer();
-		
+	void	unmapBuffer(S32 type);
+	void freeClientBuffer() ;
+	void allocateClientVertexBuffer() ;
+	void allocateClientIndexBuffer() ;
+
 public:
 	LLVertexBuffer(U32 typemask, S32 usage);
 	
 	// map for data access
-	U8*		mapBuffer(S32 access = -1);
+	U8*		mapVertexBuffer(S32 type = -1, S32 access = -1);
+	U8*		mapIndexBuffer(S32 access = -1);
+
 	// set for rendering
-	virtual void	setBuffer(U32 data_mask); 	// calls  setupVertexBuffer() if data_mask is not 0
+	virtual void	setBuffer(U32 data_mask, S32 type = -1); 	// calls  setupVertexBuffer() if data_mask is not 0
 	// allocate buffer
 	void	allocateBuffer(S32 nverts, S32 nindices, bool create);
 	virtual void resizeBuffer(S32 newnverts, S32 newnindices);
-		
+			
 	// Only call each getVertexPointer, etc, once before calling unmapBuffer()
 	// call unmapBuffer() after calls to getXXXStrider() before any cals to setBuffer()
 	// example:
@@ -190,7 +195,7 @@ public:
 	bool getClothWeightStrider(LLStrider<LLVector4>& strider, S32 index=0);
 	
 	BOOL isEmpty() const					{ return mEmpty; }
-	BOOL isLocked() const					{ return mLocked; }
+	BOOL isLocked() const					{ return mVertexLocked || mIndexLocked; }
 	S32 getNumVerts() const					{ return mNumVerts; }
 	S32 getNumIndices() const				{ return mNumIndices; }
 	S32 getRequestedVerts() const			{ return mRequestedNumVerts; }
@@ -233,14 +238,15 @@ protected:
 	U32		mGLIndices;		// GL IBO handle
 	U8*		mMappedData;	// pointer to currently mapped data (NULL if unmapped)
 	U8*		mMappedIndexData;	// pointer to currently mapped indices (NULL if unmapped)
-	BOOL	mLocked;			// if TRUE, buffer is being or has been written to in client memory
+	BOOL	mVertexLocked;			// if TRUE, vertex buffer is being or has been written to in client memory
+	BOOL	mIndexLocked;			// if TRUE, index buffer is being or has been written to in client memory
 	BOOL	mFinal;			// if TRUE, buffer can not be mapped again
 	BOOL	mFilthy;		// if TRUE, entire buffer must be copied (used to prevent redundant dirty flags)
-	BOOL	mEmpty;			// if TRUE, client buffer is empty (or NULL). Old values have been discarded.
-	S32		mOffsets[TYPE_MAX];
+	BOOL	mEmpty;			// if TRUE, client buffer is empty (or NULL). Old values have been discarded.	
 	BOOL	mResized;		// if TRUE, client buffer has been resized and GL buffer has not
 	BOOL	mDynamicSize;	// if TRUE, buffer has been resized at least once (and should be padded)
-	
+	S32		mOffsets[TYPE_MAX];
+
 	class DirtyRegion
 	{
 	public:
@@ -264,6 +270,7 @@ public:
 	static std::vector<U32> sDeleteList;
 	typedef std::list<LLVertexBuffer*> buffer_list_t;
 		
+	static BOOL sDisableVBOMapping; //disable glMapBufferARB
 	static BOOL sEnableVBOs;
 	static S32 sTypeSize[TYPE_MAX];
 	static U32 sGLMode[LLRender::NUM_MODES];
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index acc24880c9..6b49502619 100755
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -8799,6 +8799,17 @@
       <key>Value</key>
       <integer>1</integer>
     </map>
+    <key>RenderVBOMappingDisable</key>
+    <map>
+      <key>Comment</key>
+      <string>Disable VBO glMapBufferARB</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>1</integer>
+    </map>
   <key>RenderUseStreamVBO</key>
   <map>
     <key>Comment</key>
diff --git a/indra/newview/llfloatermodelpreview.cpp b/indra/newview/llfloatermodelpreview.cpp
index 42c93a91a5..ef7d1425c7 100755
--- a/indra/newview/llfloatermodelpreview.cpp
+++ b/indra/newview/llfloatermodelpreview.cpp
@@ -4085,6 +4085,10 @@ void LLModelPreview::setPreviewLOD(S32 lod)
 		mFMP->childSetTextArg("lod_table_footer", "[DETAIL]", mFMP->getString(lod_name[mPreviewLOD]));
 		mFMP->childSetText("lod_file", mLODFile[mPreviewLOD]);
 
+		// the wizard has two lod drop downs
+		LLComboBox* combo_box2 = mFMP->getChild<LLComboBox>("preview_lod_combo2");
+		combo_box2->setCurrentByIndex((NUM_LOD-1)-mPreviewLOD); // combo box list of lods is in reverse order
+
 		LLColor4 highlight_color = LLUIColorTable::instance().getColor("MeshImportTableHighlightColor");
 		LLColor4 normal_color = LLUIColorTable::instance().getColor("MeshImportTableNormalColor");
 
diff --git a/indra/newview/llmanipscale.cpp b/indra/newview/llmanipscale.cpp
index 683f455179..dcbf17e31f 100644
--- a/indra/newview/llmanipscale.cpp
+++ b/indra/newview/llmanipscale.cpp
@@ -52,6 +52,7 @@
 #include "llui.h"
 #include "llviewercamera.h"
 #include "llviewerobject.h"
+#include "llviewerregion.h"
 #include "llviewerwindow.h"
 #include "llhudrender.h"
 #include "llworld.h"
@@ -89,7 +90,10 @@ F32 get_default_max_prim_scale(bool is_flora)
 {
 	// a bit of a hack, but if it's foilage, we don't want to use the
 	// new larger scale which would result in giant trees and grass
-	if (gSavedSettings.getBOOL("MeshEnabled") && !is_flora)
+	if (gSavedSettings.getBOOL("MeshEnabled") && 
+		gAgent.getRegion() && 
+		!gAgent.getRegion()->getCapability("GetMesh").empty() &&
+		!is_flora)
 	{
 		return DEFAULT_MAX_PRIM_SCALE;
 	}
diff --git a/indra/newview/llviewercontrol.cpp b/indra/newview/llviewercontrol.cpp
index 46aa44b2bb..9385a6ae84 100644
--- a/indra/newview/llviewercontrol.cpp
+++ b/indra/newview/llviewercontrol.cpp
@@ -628,6 +628,7 @@ void settings_setup_listeners()
 	gSavedSettings.getControl("MuteAmbient")->getSignal()->connect(boost::bind(&handleAudioVolumeChanged, _2));
 	gSavedSettings.getControl("MuteUI")->getSignal()->connect(boost::bind(&handleAudioVolumeChanged, _2));
 	gSavedSettings.getControl("RenderVBOEnable")->getSignal()->connect(boost::bind(&handleResetVertexBuffersChanged, _2));
+	gSavedSettings.getControl("RenderVBOMappingDisable")->getSignal()->connect(boost::bind(&handleResetVertexBuffersChanged, _2));
 	gSavedSettings.getControl("RenderUseStreamVBO")->getSignal()->connect(boost::bind(&handleResetVertexBuffersChanged, _2));
 	gSavedSettings.getControl("RenderPreferStreamDraw")->getSignal()->connect(boost::bind(&handleResetVertexBuffersChanged, _2));
 	gSavedSettings.getControl("WLSkyDetail")->getSignal()->connect(boost::bind(&handleWLSkyDetailChanged, _2));
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index d5008c12b0..94fb0b7d31 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -1552,7 +1552,7 @@ LLViewerWindow::LLViewerWindow(
 	{
 		gSavedSettings.setBOOL("RenderVBOEnable", FALSE);
 	}
-	LLVertexBuffer::initClass(gSavedSettings.getBOOL("RenderVBOEnable"));
+	LLVertexBuffer::initClass(gSavedSettings.getBOOL("RenderVBOEnable"), gSavedSettings.getBOOL("RenderVBOMappingDisable"));
 
 	if (LLFeatureManager::getInstance()->isSafe()
 		|| (gSavedSettings.getS32("LastFeatureVersion") != LLFeatureManager::getInstance()->getVersion())
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index a8e36df294..c280805516 100755
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -5792,15 +5792,7 @@ void LLPipeline::resetVertexBuffers(LLDrawable* drawable)
 }
 
 void LLPipeline::resetVertexBuffers()
-{
-	sRenderBump = gSavedSettings.getBOOL("RenderObjectBump");
-	sUseTriStrips = gSavedSettings.getBOOL("RenderUseTriStrips");
-	LLVertexBuffer::sUseStreamDraw = gSavedSettings.getBOOL("RenderUseStreamVBO");
-	LLVertexBuffer::sPreferStreamDraw = gSavedSettings.getBOOL("RenderPreferStreamDraw");
-	LLVertexBuffer::sEnableVBOs = gSavedSettings.getBOOL("RenderVBOEnable");
-	sBakeSunlight = gSavedSettings.getBOOL("RenderBakeSunlight");
-	sNoAlpha = gSavedSettings.getBOOL("RenderNoAlpha");
-
+{	
 	for (LLWorld::region_list_t::const_iterator iter = LLWorld::getInstance()->getRegionList().begin(); 
 			iter != LLWorld::getInstance()->getRegionList().end(); ++iter)
 	{
@@ -5840,8 +5832,16 @@ void LLPipeline::resetVertexBuffers()
 		llwarns << "VBO name pool cleanup failed." << llendl;
 	}
 
-	LLVertexBuffer::unbind();
-
+	LLVertexBuffer::unbind();	
+	
+	sRenderBump = gSavedSettings.getBOOL("RenderObjectBump");
+	sUseTriStrips = gSavedSettings.getBOOL("RenderUseTriStrips");
+	LLVertexBuffer::sUseStreamDraw = gSavedSettings.getBOOL("RenderUseStreamVBO");
+	LLVertexBuffer::sPreferStreamDraw = gSavedSettings.getBOOL("RenderPreferStreamDraw");
+	LLVertexBuffer::sEnableVBOs = gSavedSettings.getBOOL("RenderVBOEnable");
+	LLVertexBuffer::sDisableVBOMapping = LLVertexBuffer::sEnableVBOs && gSavedSettings.getBOOL("RenderVBOMappingDisable") ;
+	sBakeSunlight = gSavedSettings.getBOOL("RenderBakeSunlight");
+	sNoAlpha = gSavedSettings.getBOOL("RenderNoAlpha");
 	LLPipeline::sTextureBindTest = gSavedSettings.getBOOL("RenderDebugTextureBind");
 }