4 files changed, 47 insertions, 3 deletions

diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 84da1b3c62..515b1061f9 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -1676,6 +1676,7 @@ LLVolume::LLVolume(const LLVolumeParams &params, const F32 detail, const BOOL ge
 	mFaceMask = 0x0;
 	mDetail = detail;
 	mSculptLevel = -2;
+	mIsTetrahedron = FALSE;
 	mLODScaleBias.setVec(1,1,1);
 
 	// set defaults
@@ -1905,7 +1906,7 @@ BOOL LLVolume::createVolumeFacesFromFile(const std::string& file_name)
 BOOL LLVolume::createVolumeFacesFromStream(std::istream& is)
 {
 	mSculptLevel = -1;  // default is an error occured
-	
+
 	LLSD header;
 	{
 		if (!LLSDSerialize::deserialize(header, is, 1024*1024*1024))
@@ -2048,6 +2049,11 @@ BOOL LLVolume::createVolumeFacesFromStream(std::istream& is)
 	{
 		U32 face_count = mdl.size();
 
+		if (face_count == 0)
+		{
+			llerrs << "WTF?" << llendl;
+		}
+
 		mVolumeFaces.resize(face_count);
 
 		for (U32 i = 0; i < face_count; ++i)
@@ -2063,8 +2069,9 @@ BOOL LLVolume::createVolumeFacesFromStream(std::istream& is)
 
 			//copy out indices
 			face.mIndices.resize(idx.size()/2);
-			if (idx.empty())
+			if (idx.empty() || face.mIndices.size() < 3)
 			{ //why is there an empty index list?
+				llerrs <<"WTF?" << llendl;
 				continue;
 			}
 
@@ -2150,6 +2157,11 @@ void tetrahedron_set_normal(LLVolumeFace::VertexData* cv)
 	cv[2].mNormal = nrm;
 }
 
+BOOL LLVolume::isTetrahedron()
+{
+	return mIsTetrahedron;
+}
+
 void LLVolume::makeTetrahedron()
 {
 	mVolumeFaces.clear();
@@ -2165,6 +2177,9 @@ void LLVolume::makeTetrahedron()
 		LLVector3(x,-x,-x)
 	};
 
+	face.mExtents[0].setVec(-x,-x,-x);
+	face.mExtents[1].setVec(x,x,x);
+	
 	LLVolumeFace::VertexData cv[3];
 
 	//set texture coordinates
@@ -2225,12 +2240,19 @@ void LLVolume::makeTetrahedron()
 	
 	mVolumeFaces.push_back(face);
 	mSculptLevel = 0;
+	mIsTetrahedron = TRUE;
 }
 
 void LLVolume::copyVolumeFaces(LLVolume* volume)
 {
+	if (volume->isTetrahedron())
+	{
+		llerrs << "WTF?" << llendl;
+	}
+
 	mVolumeFaces = volume->mVolumeFaces;
 	mSculptLevel = 0;
+	mIsTetrahedron = FALSE;
 }
 
 S32 const LL_SCULPT_MESH_MAX_FACES = 8;
@@ -2615,6 +2637,11 @@ void LLVolume::sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components,
 	LLMemType m1(LLMemType::MTYPE_VOLUME);
     U8 sculpt_type = mParams.getSculptType();
 
+	if (sculpt_type & LL_SCULPT_TYPE_MASK == LL_SCULPT_TYPE_MESH)
+	{
+		llerrs << "WTF?" << llendl;
+	}
+
 	BOOL data_is_empty = FALSE;
 
 	if (sculpt_width == 0 || sculpt_height == 0 || sculpt_components < 3 || sculpt_data == NULL)
diff --git a/indra/llmath/llvolume.h b/indra/llmath/llvolume.h
index bf2854ede9..8e57f2e280 100644
--- a/indra/llmath/llvolume.h
+++ b/indra/llmath/llvolume.h
@@ -904,7 +904,8 @@ public:
 	BOOL isUnique() const									{ return mUnique; }
 
 	S32 getSculptLevel() const                              { return mSculptLevel; }
-	
+	void setSculptLevel(S32 level)							{ mSculptLevel = level; }
+
 	S32 *getTriangleIndices(U32 &num_indices) const;
 
 	// returns number of triangle indeces required for path/profile mesh
@@ -970,11 +971,13 @@ public:
 	virtual BOOL createVolumeFacesFromFile(const std::string& file_name);
 	virtual BOOL createVolumeFacesFromStream(std::istream& is);
 	virtual void makeTetrahedron();
+	virtual BOOL isTetrahedron();
 
  protected:
 	BOOL mUnique;
 	F32 mDetail;
 	S32 mSculptLevel;
+	BOOL mIsTetrahedron;
 	
 	LLVolumeParams mParams;
 	LLPath *mPathp;
diff --git a/indra/llmath/llvolumemgr.cpp b/indra/llmath/llvolumemgr.cpp
index 61c5a0adc9..419e0015ba 100644
--- a/indra/llmath/llvolumemgr.cpp
+++ b/indra/llmath/llvolumemgr.cpp
@@ -375,6 +375,19 @@ F32 LLVolumeLODGroup::getVolumeScaleFromDetail(const S32 detail)
 	return mDetailScales[detail];
 }
 
+S32 LLVolumeLODGroup::getVolumeDetailFromScale(const F32 detail)
+{
+	for (S32 i = 1; i < 4; i++)
+	{
+		if (mDetailScales[i] > detail)
+		{
+			return i-1;
+		}
+	}
+
+	return 3;
+}
+
 F32 LLVolumeLODGroup::dump()
 {
 	F32 usage = 0.f;
diff --git a/indra/llmath/llvolumemgr.h b/indra/llmath/llvolumemgr.h
index a78ea76a1a..f5dc4cd748 100644
--- a/indra/llmath/llvolumemgr.h
+++ b/indra/llmath/llvolumemgr.h
@@ -59,6 +59,7 @@ public:
 	static S32 getDetailFromTan(const F32 tan_angle);
 	static void getDetailProximity(const F32 tan_angle, F32 &to_lower, F32& to_higher);
 	static F32 getVolumeScaleFromDetail(const S32 detail);
+	static S32 getVolumeDetailFromScale(F32 scale);
 
 	LLVolume* refLOD(const S32 detail);
 	BOOL derefLOD(LLVolume *volumep);