diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index dbbcb6e7c4ab0038e22da3ddc7c759de28a97dc0..f299518474b1046314a96ac1d9bac158982b6306 100644
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -1364,7 +1364,7 @@ F32 LLFace::getTextureVirtualSize()
 	F32 cos_angle_to_view_dir;	
 	BOOL in_frustum = calcPixelArea(cos_angle_to_view_dir, radius);
 
-	if (mPixelArea < 0.0001f || !in_frustum)
+	if (mPixelArea < F_ALMOST_ZERO || !in_frustum)
 	{
 		setVirtualSize(0.f) ;
 		return 0.f;
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 928525244c717a37a591116df643babfbbddf4a6..e38608bcfcde60f48df52ac1cf46e643e07c2c18 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -1615,6 +1615,7 @@ F32 LLViewerFetchedTexture::calcDecodePriority()
 		S32 ddiscard = MAX_DISCARD_LEVEL - (S32)desired;
 		ddiscard = llclamp(ddiscard, 0, MAX_DELTA_DISCARD_LEVEL_FOR_PRIORITY);
 		priority = (ddiscard + 1) * PRIORITY_DELTA_DISCARD_LEVEL_FACTOR;
+		setAdditionalDecodePriority(1.0f) ;//boost the textures without any data so far.
 	}
 	else if ((mMinDiscardLevel > 0) && (cur_discard <= mMinDiscardLevel))
 	{
@@ -3698,7 +3699,7 @@ void LLTexturePipelineTester::updateStablizingTime()
 	{
 		F32 t = mEndStablizingTime - mStartStablizingTime ;
 
-		if(t > 0.0001f && (t - mTotalStablizingTime) < 0.0001f)
+		if(t > F_ALMOST_ZERO && (t - mTotalStablizingTime) < F_ALMOST_ZERO)
 		{
 			//already stablized
 			mTotalStablizingTime = LLImageGL::sLastFrameTime - mStartStablizingTime ;
@@ -3823,7 +3824,7 @@ LLMetricPerformanceTester::LLTestSession* LLTexturePipelineTester::loadTestSessi
 		//time
 		F32 start_time = (*log)[label]["StartFetchingTime"].asReal() ;
 		F32 cur_time   = (*log)[label]["Time"].asReal() ;
-		if(start_time - start_fetching_time > 0.0001f) //fetching has paused for a while
+		if(start_time - start_fetching_time > F_ALMOST_ZERO) //fetching has paused for a while
 		{
 			sessionp->mTotalFetchingTime += total_fetching_time ;
 			sessionp->mTotalGrayTime += total_gray_time ;
diff --git a/indra/newview/llvotree.cpp b/indra/newview/llvotree.cpp
index 10537a6eb5cf2ac08bc3f31ca7a308ba24d016c2..0efe6682be69ce1e6dab05fe1771f4e5f84fb74c 100644
--- a/indra/newview/llvotree.cpp
+++ b/indra/newview/llvotree.cpp
@@ -73,7 +73,7 @@ S32 LLVOTree::sLODVertexCount[sMAX_NUM_TREE_LOD_LEVELS];
 S32 LLVOTree::sLODIndexOffset[sMAX_NUM_TREE_LOD_LEVELS];
 S32 LLVOTree::sLODIndexCount[sMAX_NUM_TREE_LOD_LEVELS];
 S32 LLVOTree::sLODSlices[sMAX_NUM_TREE_LOD_LEVELS] = {10, 5, 4, 3};
-F32 LLVOTree::sLODAngles[sMAX_NUM_TREE_LOD_LEVELS] = {30.f, 20.f, 15.f, 0.00001f};
+F32 LLVOTree::sLODAngles[sMAX_NUM_TREE_LOD_LEVELS] = {30.f, 20.f, 15.f, F_ALMOST_ZERO};
 
 F32 LLVOTree::sTreeFactor = 1.f;
 
diff --git a/indra/newview/llwearable.cpp b/indra/newview/llwearable.cpp
index 401e2cdb1bf0ed48c2aa7f6e0d87edb6e9ecfd62..dfa7ca7136929080a0387a82512c5fcbbf9bbfc4 100644
--- a/indra/newview/llwearable.cpp
+++ b/indra/newview/llwearable.cpp
@@ -444,7 +444,6 @@ BOOL LLWearable::importFile( LLFILE* file )
 			delete mSavedTEMap[te];
 		}
 
-		image->setBoostLevel(LLViewerTexture::BOOST_AVATAR_SELF) ;
 		image->setLoadedCallback(LLVOAvatarSelf::debugOnTimingLocalTexLoaded,0,TRUE,FALSE, new LLVOAvatarSelf::LLAvatarTexData(id, (LLVOAvatarDefines::ETextureIndex)te), NULL);
 
 		LLUUID textureid(text_buffer);