From d08372f71d575ebc3050806660655e1c7c7cff84 Mon Sep 17 00:00:00 2001
From: Xiaohong Bao <bao@lindenlab.com>
Date: Tue, 1 Feb 2011 12:43:12 -0700
Subject: merge fix for SH-659 from v-d to mesh: small textures not loaded

---
 indra/llmath/llvolume.cpp | 40 +++++++++++++++++++++++++++++++++++++---
 indra/llmath/llvolume.h   |  4 ++--
 2 files changed, 39 insertions(+), 5 deletions(-)

(limited to 'indra/llmath')

diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 617a8b4ca3..2f662b757b 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -5393,19 +5393,53 @@ BOOL LLVolumeFace::create(LLVolume* volume, BOOL partial_build)
 	delete mOctree;
 	mOctree = NULL;
 
+	BOOL ret = FALSE ;
 	if (mTypeMask & CAP_MASK)
 	{
-		return createCap(volume, partial_build);
+		ret = createCap(volume, partial_build);
 	}
 	else if ((mTypeMask & END_MASK) || (mTypeMask & SIDE_MASK))
 	{
-		return createSide(volume, partial_build);
+		ret = createSide(volume, partial_build);
 	}
 	else
 	{
 		llerrs << "Unknown/uninitialized face type!" << llendl;
-		return FALSE;
 	}
+
+	//update the range of the texture coordinates
+	if(ret)
+	{
+		mTexCoordExtents[0].setVec(1.f, 1.f) ;
+		mTexCoordExtents[1].setVec(0.f, 0.f) ;
+
+		for(U32 i = 0 ; i < mNumVertices ; i++)
+		{
+			if(mTexCoordExtents[0].mV[0] > mTexCoords[i].mV[0])
+			{
+				mTexCoordExtents[0].mV[0] = mTexCoords[i].mV[0] ;
+			}
+			if(mTexCoordExtents[1].mV[0] < mTexCoords[i].mV[0])
+			{
+				mTexCoordExtents[1].mV[0] = mTexCoords[i].mV[0] ;
+			}
+
+			if(mTexCoordExtents[0].mV[1] > mTexCoords[i].mV[1])
+			{
+				mTexCoordExtents[0].mV[1] = mTexCoords[i].mV[1] ;
+			}
+			if(mTexCoordExtents[1].mV[1] < mTexCoords[i].mV[1])
+			{
+				mTexCoordExtents[1].mV[1] = mTexCoords[i].mV[1] ;
+			}			
+		}
+		mTexCoordExtents[0].mV[0] = llmax(0.f, mTexCoordExtents[0].mV[0]) ;
+		mTexCoordExtents[0].mV[1] = llmax(0.f, mTexCoordExtents[0].mV[1]) ;
+		mTexCoordExtents[1].mV[0] = llmin(1.f, mTexCoordExtents[1].mV[0]) ;
+		mTexCoordExtents[1].mV[1] = llmin(1.f, mTexCoordExtents[1].mV[1]) ;
+	}
+
+	return ret ;
 }
 
 void LLVolumeFace::getVertexData(U16 index, LLVolumeFace::VertexData& cv)
diff --git a/indra/llmath/llvolume.h b/indra/llmath/llvolume.h
index eceaced9e2..5bd65c2bf2 100644
--- a/indra/llmath/llvolume.h
+++ b/indra/llmath/llvolume.h
@@ -901,7 +901,7 @@ public:
 
 	LLVector4a* mExtents; //minimum and maximum point of face
 	LLVector4a* mCenter;
-	LLVector2 mTexCoordExtents[2]; //minimum and maximum of texture coordinates of the face.
+	LLVector2   mTexCoordExtents[2]; //minimum and maximum of texture coordinates of the face.
 
 	S32 mNumVertices;
 	S32 mNumIndices;
@@ -909,7 +909,7 @@ public:
 	LLVector4a* mPositions;
 	LLVector4a* mNormals;
 	LLVector4a* mBinormals;
-	LLVector2* mTexCoords;
+	LLVector2*  mTexCoords;
 	U16* mIndices;
 
 	std::vector<S32>	mEdge;
-- 
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