4 files changed, 50 insertions, 6 deletions

diff --git a/indra/llmath/llcamera.cpp b/indra/llmath/llcamera.cpp
index 0f343bcefe..21ea4b2e7c 100644
--- a/indra/llmath/llcamera.cpp
+++ b/indra/llmath/llcamera.cpp
@@ -178,7 +178,7 @@ S32 LLCamera::AABBInFrustum(const LLVector3 &center, const LLVector3& radius)
 	U8 mask = 0;
 	S32 result = 2;
 
-	if (radius.magVecSquared() > mFrustumCornerDist * mFrustumCornerDist)
+	/*if (mFrustumCornerDist > 0.f && radius.magVecSquared() > mFrustumCornerDist * mFrustumCornerDist)
 	{ //box is larger than frustum, check frustum quads against box planes
 
 		static const LLVector3 dir[] = 
@@ -241,11 +241,15 @@ S32 LLCamera::AABBInFrustum(const LLVector3 &center, const LLVector3& radius)
 			result = 1;
 		}
 	}
-	else
+	else*/
 	{
 		for (U32 i = 0; i < mPlaneCount; i++)
 		{
 			mask = mAgentPlanes[i].mask;
+			if (mask == 0xff)
+			{
+				continue;
+			}
 			LLPlane p = mAgentPlanes[i].p;
 			LLVector3 n = LLVector3(p);
 			float d = p.mV[3];
@@ -294,6 +298,10 @@ S32 LLCamera::AABBInFrustumNoFarClip(const LLVector3 &center, const LLVector3& r
 		}
 
 		mask = mAgentPlanes[i].mask;
+		if (mask == 0xff)
+		{
+			continue;
+		}
 		LLPlane p = mAgentPlanes[i].p;
 		LLVector3 n = LLVector3(p);
 		float d = p.mV[3];
@@ -437,6 +445,11 @@ int LLCamera::sphereInFrustum(const LLVector3 &sphere_center, const F32 radius)
 	int res = 2;
 	for (int i = 0; i < 6; i++)
 	{
+		if (mAgentPlanes[i].mask == 0xff)
+		{
+			continue;
+		}
+
 		float d = mAgentPlanes[i].p.dist(sphere_center);
 
 		if (d > radius) 
@@ -622,6 +635,17 @@ U8 LLCamera::calcPlaneMask(const LLPlane& plane)
 	return mask;
 }
 
+void LLCamera::ignoreAgentFrustumPlane(S32 idx)
+{
+	if (idx < 0 || idx > (S32) mPlaneCount)
+	{
+		return;
+	}
+
+	mAgentPlanes[idx].mask = 0xff;
+	mAgentPlanes[idx].p.clearVec();
+}
+
 void LLCamera::calcAgentFrustumPlanes(LLVector3* frust)
 {
 
diff --git a/indra/llmath/llcamera.h b/indra/llmath/llcamera.h
index 23ee1157f9..0c81067919 100644
--- a/indra/llmath/llcamera.h
+++ b/indra/llmath/llcamera.h
@@ -93,6 +93,17 @@ public:
 		PLANE_TOP_MASK = (1<<PLANE_TOP),
 		PLANE_ALL_MASK = 0xf
 	};
+
+	enum
+	{
+		AGENT_PLANE_LEFT = 0,
+		AGENT_PLANE_RIGHT,
+		AGENT_PLANE_NEAR,
+		AGENT_PLANE_BOTTOM,
+		AGENT_PLANE_TOP,
+		AGENT_PLANE_FAR,
+	};
+
 	enum {
 		HORIZ_PLANE_LEFT = 0,
 		HORIZ_PLANE_RIGHT = 1,
@@ -132,7 +143,8 @@ private:
 public:
 	LLVector3 mAgentFrustum[8];  //8 corners of 6-plane frustum
 	F32	mFrustumCornerDist;		//distance to corner of frustum against far clip plane
-	
+	LLPlane getAgentPlane(U32 idx) { return mAgentPlanes[idx].p; }
+
 public:
 	LLCamera();
 	LLCamera(F32 vertical_fov_rads, F32 aspect_ratio, S32 view_height_in_pixels, F32 near_plane, F32 far_plane);
@@ -179,6 +191,8 @@ public:
 	// Return number of bytes copied.
 	size_t readFrustumFromBuffer(const char *buffer);
 	void calcAgentFrustumPlanes(LLVector3* frust);
+	void ignoreAgentFrustumPlane(S32 idx);
+
 	// Returns 1 if partly in, 2 if fully in.
 	// NOTE: 'center' is in absolute frame.
 	S32 sphereInFrustumOld(const LLVector3 &center, const F32 radius) const;
diff --git a/indra/llmath/llrect.h b/indra/llmath/llrect.h
index c03a331aff..2fa8cb3f16 100644
--- a/indra/llmath/llrect.h
+++ b/indra/llmath/llrect.h
@@ -42,6 +42,7 @@
 template <class Type> class LLRectBase
 {
 public:
+	typedef	Type tCoordType;
 	Type		mLeft;
 	Type		mTop;
 	Type		mRight;
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index a0357a32cc..5cc0a596fd 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -84,6 +84,7 @@ const F32 SKEW_MIN	= -0.95f;
 const F32 SKEW_MAX	=  0.95f;
 
 const F32 SCULPT_MIN_AREA = 0.002f;
+const S32 SCULPT_MIN_AREA_DETAIL = 1;
 
 BOOL check_same_clock_dir( const LLVector3& pt1, const LLVector3& pt2, const LLVector3& pt3, const LLVector3& norm)
 {    
@@ -2230,10 +2231,14 @@ void LLVolume::sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components,
 	if (!data_is_empty)
 	{
 		sculptGenerateMapVertices(sculpt_width, sculpt_height, sculpt_components, sculpt_data, sculpt_type);
-		
-		if (sculptGetSurfaceArea() < SCULPT_MIN_AREA)
+
+		// don't test lowest LOD to support legacy content DEV-33670
+		if (mDetail > SCULPT_MIN_AREA_DETAIL)
 		{
-			data_is_empty = TRUE;
+			if (sculptGetSurfaceArea() < SCULPT_MIN_AREA)
+			{
+				data_is_empty = TRUE;
+			}
 		}
 	}