4 files changed, 40 insertions, 8 deletions
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index d5f0b81830..b508705759 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -1858,12 +1858,17 @@ void parse_gl_version( S32* major, S32* minor, S32* release, std::string* vendor
 	}
 }
 
-LLGLUserClipPlane::LLGLUserClipPlane(const LLPlane& p, const glh::matrix4f& modelview, const glh::matrix4f& projection)
+LLGLUserClipPlane::LLGLUserClipPlane(const LLPlane& p, const glh::matrix4f& modelview, const glh::matrix4f& projection, bool apply)
 {
-	mModelview = modelview;
-	mProjection = projection;
+	mApply = apply;
 
-	setPlane(p[0], p[1], p[2], p[3]);
+	if (mApply)
+	{
+		mModelview = modelview;
+		mProjection = projection;
+
+		setPlane(p[0], p[1], p[2], p[3]);
+	}
 }
 
 void LLGLUserClipPlane::setPlane(F32 a, F32 b, F32 c, F32 d)
@@ -1894,9 +1899,12 @@ void LLGLUserClipPlane::setPlane(F32 a, F32 b, F32 c, F32 d)
 
 LLGLUserClipPlane::~LLGLUserClipPlane()
 {
-	glMatrixMode(GL_PROJECTION);
-	glPopMatrix();
-	glMatrixMode(GL_MODELVIEW);
+	if (mApply)
+	{
+		glMatrixMode(GL_PROJECTION);
+		glPopMatrix();
+		glMatrixMode(GL_MODELVIEW);
+	}
 }
 
 LLGLNamePool::LLGLNamePool()
diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index 0d7ba15b12..43992d51cb 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -301,12 +301,14 @@ class LLGLUserClipPlane
 {
 public:
 	
-	LLGLUserClipPlane(const LLPlane& plane, const glh::matrix4f& modelview, const glh::matrix4f& projection);
+	LLGLUserClipPlane(const LLPlane& plane, const glh::matrix4f& modelview, const glh::matrix4f& projection, bool apply = true);
 	~LLGLUserClipPlane();
 
 	void setPlane(F32 a, F32 b, F32 c, F32 d);
 
 private:
+	bool mApply;
+
 	glh::matrix4f mProjection;
 	glh::matrix4f mModelview;
 };
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index 0d3f5b81bc..73efbfc999 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -236,6 +236,22 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 	}
 }
 
+//static
+void LLVertexBuffer::drawArrays(U32 mode, const std::vector<LLVector3>& pos, const std::vector<LLVector3>& norm)
+{
+	U32 count = pos.size();
+	llassert(norm.size() >= pos.size());
+
+	unbind();
+	
+	setupClientArrays(MAP_VERTEX | MAP_NORMAL);
+
+	glVertexPointer(3, GL_FLOAT, 0, pos[0].mV);
+	glNormalPointer(GL_FLOAT, 0, norm[0].mV);
+
+	glDrawArrays(sGLMode[mode], 0, count);
+}
+
 void LLVertexBuffer::validateRange(U32 start, U32 end, U32 count, U32 indices_offset) const
 {
 	if (start >= (U32) mRequestedNumVerts ||
diff --git a/indra/llrender/llvertexbuffer.h b/indra/llrender/llvertexbuffer.h
index 2bbc17fb12..a9f22193f8 100644
--- a/indra/llrender/llvertexbuffer.h
+++ b/indra/llrender/llvertexbuffer.h
@@ -56,13 +56,17 @@ protected:
 	virtual GLuint allocateName()
 	{
 		GLuint name;
+		stop_glerror();
 		glGenBuffersARB(1, &name);
+		stop_glerror();
 		return name;
 	}
 
 	virtual void releaseName(GLuint name)
 	{
+		stop_glerror();
 		glDeleteBuffersARB(1, &name);
+		stop_glerror();
 	}
 };
 
@@ -97,6 +101,8 @@ public:
 	static void initClass(bool use_vbo, bool no_vbo_mapping);
 	static void cleanupClass();
 	static void setupClientArrays(U32 data_mask);
+	static void drawArrays(U32 mode, const std::vector<LLVector3>& pos, const std::vector<LLVector3>& norm);
+
  	static void clientCopy(F64 max_time = 0.005); //copy data from client to GL
 	static void unbind(); //unbind any bound vertex buffer