Initial pass at getting a list of viewer objects with non-null material IDs.

17 files changed, 354 insertions, 33 deletions

diff --git a/indra/llprimitive/CMakeLists.txt b/indra/llprimitive/CMakeLists.txt
index e4d9de7eb6..82d0f892f2 100644
--- a/indra/llprimitive/CMakeLists.txt
+++ b/indra/llprimitive/CMakeLists.txt
@@ -20,6 +20,7 @@ include_directories(
     )
 
 set(llprimitive_SOURCE_FILES
+    llmaterialid.cpp
     llmaterialtable.cpp
     llmediaentry.cpp
     llmodel.cpp
@@ -37,6 +38,7 @@ set(llprimitive_HEADER_FILES
     CMakeLists.txt
 
     legacy_object_types.h
+    llmaterialid.h
     llmaterialtable.h
     llmediaentry.h
     llmodel.h
diff --git a/indra/llprimitive/llmaterialid.cpp b/indra/llprimitive/llmaterialid.cpp
new file mode 100644
index 0000000000..4355a8ea3f
--- /dev/null
+++ b/indra/llprimitive/llmaterialid.cpp
@@ -0,0 +1,112 @@
+/** 
+* @file llmaterialid.cpp
+* @brief Implementation of llmaterialid
+* @author Stinson@lindenlab.com
+*
+* $LicenseInfo:firstyear=2012&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2012, Linden Research, Inc.
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#include "linden_common.h"
+
+#include "llmaterialid.h"
+
+const LLMaterialID LLMaterialID::null;
+
+LLMaterialID::LLMaterialID()
+{
+	clear();
+}
+
+LLMaterialID::LLMaterialID(const LLSD& pMaterialID)
+{
+	llassert(pMaterialID.isBinary());
+	parseFromBinary(pMaterialID.asBinary());
+}
+
+LLMaterialID::LLMaterialID(const LLSD::Binary& pMaterialID)
+{
+	parseFromBinary(pMaterialID);
+}
+
+LLMaterialID::LLMaterialID(const LLMaterialID& pOtherMaterialID)
+{
+	copyFromOtherMaterialID(pOtherMaterialID);
+}
+
+LLMaterialID::~LLMaterialID()
+{
+}
+
+bool LLMaterialID::operator == (const LLMaterialID& pOtherMaterialID) const
+{
+	return (compareToOtherMaterialID(pOtherMaterialID) == 0);
+}
+
+bool LLMaterialID::operator != (const LLMaterialID& pOtherMaterialID) const
+{
+	return (compareToOtherMaterialID(pOtherMaterialID) != 0);
+}
+
+LLMaterialID& LLMaterialID::operator = (const LLMaterialID& pOtherMaterialID)
+{
+	copyFromOtherMaterialID(pOtherMaterialID);
+	return (*this);
+}
+
+bool LLMaterialID::isNull() const
+{
+	return (compareToOtherMaterialID(LLMaterialID::null) == 0);
+}
+
+const U8* LLMaterialID::get() const
+{
+	return mID;
+}
+
+void LLMaterialID::set(const void* pMemory)
+{
+	llassert(pMemory != NULL);
+
+	// assumes that the required size of memory is available
+	memcpy(mID, pMemory, MATERIAL_ID_SIZE * sizeof(U8));
+}
+
+void LLMaterialID::clear()
+{
+	memset(mID, 0, MATERIAL_ID_SIZE * sizeof(U8));
+}
+
+void LLMaterialID::parseFromBinary (const LLSD::Binary& pMaterialID)
+{
+	llassert(pMaterialID.size() == (MATERIAL_ID_SIZE * sizeof(U8)));
+	memcpy(mID, &pMaterialID[0], MATERIAL_ID_SIZE * sizeof(U8));
+}
+
+void LLMaterialID::copyFromOtherMaterialID(const LLMaterialID& pOtherMaterialID)
+{
+	memcpy(mID, pOtherMaterialID.mID, MATERIAL_ID_SIZE * sizeof(U8));
+}
+
+int LLMaterialID::compareToOtherMaterialID(const LLMaterialID& pOtherMaterialID) const
+{
+	return memcmp(mID, pOtherMaterialID.mID, MATERIAL_ID_SIZE * sizeof(U8));
+}
diff --git a/indra/llprimitive/llmaterialid.h b/indra/llprimitive/llmaterialid.h
new file mode 100644
index 0000000000..4551550db5
--- /dev/null
+++ b/indra/llprimitive/llmaterialid.h
@@ -0,0 +1,62 @@
+/** 
+* @file   llmaterialid.h
+* @brief  Header file for llmaterialid
+* @author Stinson@lindenlab.com
+*
+* $LicenseInfo:firstyear=2012&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2012, Linden Research, Inc.
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+#ifndef LL_LLMATERIALID_H
+#define LL_LLMATERIALID_H
+
+#define MATERIAL_ID_SIZE 16
+
+class LLMaterialID
+{
+public:
+	LLMaterialID();
+	LLMaterialID(const LLSD& pMaterialID);
+	LLMaterialID(const LLSD::Binary& pMaterialID);
+	LLMaterialID(const LLMaterialID& pOtherMaterialID);
+	~LLMaterialID();
+
+	bool          operator == (const LLMaterialID& pOtherMaterialID) const;
+	bool          operator != (const LLMaterialID& pOtherMaterialID) const;
+	LLMaterialID& operator = (const LLMaterialID& pOtherMaterialID);
+
+	bool          isNull() const;
+
+	const U8*     get() const;
+	void          set(const void* pMemory);
+	void          clear();
+
+	static const LLMaterialID null;
+
+private:
+	void parseFromBinary(const LLSD::Binary& pMaterialID);
+	void copyFromOtherMaterialID(const LLMaterialID& pOtherMaterialID);
+	int  compareToOtherMaterialID(const LLMaterialID& pOtherMaterialID) const;
+
+	U8 mID[MATERIAL_ID_SIZE];
+} ;
+
+#endif // LL_LLMATERIALID_H
+
diff --git a/indra/llprimitive/llprimitive.cpp b/indra/llprimitive/llprimitive.cpp
index c6e229ae8e..86aa371368 100755
--- a/indra/llprimitive/llprimitive.cpp
+++ b/indra/llprimitive/llprimitive.cpp
@@ -39,6 +39,7 @@
 #include "lldatapacker.h"
 #include "llsdutil_math.h"
 #include "llprimtexturelist.h"
+#include "llmaterialid.h"
 
 /**
  * exported constants
@@ -366,6 +367,11 @@ S32 LLPrimitive::setTEGlow(const U8 index, const F32 glow)
 	return mTextureList.setGlow(index, glow);
 }
 
+S32 LLPrimitive::setTEMaterialID(const U8 index, const LLMaterialID& pMaterialID)
+{
+	return mTextureList.setMaterialID(index, pMaterialID);
+}
+
 
 LLPCode LLPrimitive::legacyToPCode(const U8 legacy)
 {
@@ -1091,6 +1097,7 @@ BOOL LLPrimitive::packTEMessage(LLMessageSystem *mesgsys) const
 	U8	   bump[MAX_TES];
 	U8	   media_flags[MAX_TES];
     U8     glow[MAX_TES];
+	U8     material_data[MAX_TES*16];
 	
 	const U32 MAX_TE_BUFFER = 4096;
 	U8 packed_buffer[MAX_TE_BUFFER];
@@ -1128,6 +1135,9 @@ BOOL LLPrimitive::packTEMessage(LLMessageSystem *mesgsys) const
 			bump[face_index] = te->getBumpShinyFullbright();
 			media_flags[face_index] = te->getMediaTexGen();
 			glow[face_index] = (U8) llround((llclamp(te->getGlow(), 0.0f, 1.0f) * (F32)0xFF));
+
+			// Directly sending material_ids is not safe!
+			memcpy(&material_data[face_index*16],getTE(face_index)->getMaterialID().get(),16);	/* Flawfinder: ignore */ 
 		}
 
 		cur_ptr += packTEField(cur_ptr, (U8 *)image_ids, sizeof(LLUUID),last_face_index, MVT_LLUUID);
@@ -1149,6 +1159,8 @@ BOOL LLPrimitive::packTEMessage(LLMessageSystem *mesgsys) const
 		cur_ptr += packTEField(cur_ptr, (U8 *)media_flags, 1 ,last_face_index, MVT_U8);
 		*cur_ptr++ = 0;
 		cur_ptr += packTEField(cur_ptr, (U8 *)glow, 1 ,last_face_index, MVT_U8);
+		*cur_ptr++ = 0;
+		cur_ptr += packTEField(cur_ptr, (U8 *)material_data, 16, last_face_index, MVT_LLUUID);
 	}
    	mesgsys->addBinaryDataFast(_PREHASH_TextureEntry, packed_buffer, (S32)(cur_ptr - packed_buffer));
 
@@ -1170,6 +1182,7 @@ BOOL LLPrimitive::packTEMessage(LLDataPacker &dp) const
 	U8	   bump[MAX_TES];
 	U8	   media_flags[MAX_TES];
     U8     glow[MAX_TES];
+	U8     material_data[MAX_TES*16];
 	
 	const U32 MAX_TE_BUFFER = 4096;
 	U8 packed_buffer[MAX_TE_BUFFER];
@@ -1207,6 +1220,9 @@ BOOL LLPrimitive::packTEMessage(LLDataPacker &dp) const
 			bump[face_index] = te->getBumpShinyFullbright();
 			media_flags[face_index] = te->getMediaTexGen();
             glow[face_index] = (U8) llround((llclamp(te->getGlow(), 0.0f, 1.0f) * (F32)0xFF));
+
+			// Directly sending material_ids is not safe!
+			memcpy(&material_data[face_index*16],getTE(face_index)->getMaterialID().get(),16);	/* Flawfinder: ignore */ 
 		}
 
 		cur_ptr += packTEField(cur_ptr, (U8 *)image_ids, sizeof(LLUUID),last_face_index, MVT_LLUUID);
@@ -1228,6 +1244,8 @@ BOOL LLPrimitive::packTEMessage(LLDataPacker &dp) const
 		cur_ptr += packTEField(cur_ptr, (U8 *)media_flags, 1 ,last_face_index, MVT_U8);
 		*cur_ptr++ = 0;
 		cur_ptr += packTEField(cur_ptr, (U8 *)glow, 1 ,last_face_index, MVT_U8);
+		*cur_ptr++ = 0;
+		cur_ptr += packTEField(cur_ptr, (U8 *)material_data, 16, last_face_index, MVT_LLUUID);
 	}
 
 	dp.packBinaryData(packed_buffer, (S32)(cur_ptr - packed_buffer), "TextureEntry");
@@ -1246,6 +1264,7 @@ S32 LLPrimitive::unpackTEMessage(LLMessageSystem* mesgsys, char const* block_nam
 	const U32 MAX_TES = 32;
 
 	// Avoid construction of 32 UUIDs per call. JC
+	static LLMaterialID material_ids[MAX_TES];
 
 	U8     image_data[MAX_TES*16];
 	U8	  colors[MAX_TES*4];
@@ -1257,6 +1276,7 @@ S32 LLPrimitive::unpackTEMessage(LLMessageSystem* mesgsys, char const* block_nam
 	U8	   bump[MAX_TES];
 	U8	   media_flags[MAX_TES];
     U8     glow[MAX_TES];
+	U8     material_data[MAX_TES*16];
 	
 	const U32 MAX_TE_BUFFER = 4096;
 	U8 packed_buffer[MAX_TE_BUFFER];
@@ -1309,6 +1329,13 @@ S32 LLPrimitive::unpackTEMessage(LLMessageSystem* mesgsys, char const* block_nam
 	cur_ptr += unpackTEField(cur_ptr, packed_buffer+size, (U8 *)media_flags, 1, face_count, MVT_U8);
 	cur_ptr++;
 	cur_ptr += unpackTEField(cur_ptr, packed_buffer+size, (U8 *)glow, 1, face_count, MVT_U8);
+	cur_ptr++;
+	cur_ptr += unpackTEField(cur_ptr, packed_buffer+size, (U8 *)material_data, 16, face_count, MVT_LLUUID);
+	
+	for (U32 i = 0; i < face_count; i++)
+	{
+		material_ids[i].set(&material_data[i * 16]);
+	}
 	
 	LLColor4 color;
 	LLColor4U coloru;
@@ -1321,6 +1348,7 @@ S32 LLPrimitive::unpackTEMessage(LLMessageSystem* mesgsys, char const* block_nam
 		retval |= setTEBumpShinyFullbright(i, bump[i]);
 		retval |= setTEMediaTexGen(i, media_flags[i]);
 		retval |= setTEGlow(i, (F32)glow[i] / (F32)0xFF);
+		retval |= setTEMaterialID(i, material_ids[i]);
 		coloru = LLColor4U(colors + 4*i);
 
 		// Note:  This is an optimization to send common colors (1.f, 1.f, 1.f, 1.f)
@@ -1346,6 +1374,7 @@ S32 LLPrimitive::unpackTEMessage(LLDataPacker &dp)
 
 	// Avoid construction of 32 UUIDs per call
 	static LLUUID image_ids[MAX_TES];
+	static LLMaterialID material_ids[MAX_TES];
 
 	U8     image_data[MAX_TES*16];
 	U8	   colors[MAX_TES*4];
@@ -1357,7 +1386,7 @@ S32 LLPrimitive::unpackTEMessage(LLDataPacker &dp)
 	U8	   bump[MAX_TES];
 	U8	   media_flags[MAX_TES];
     U8     glow[MAX_TES];
-	unsigned char material_id[MAX_TES*16];
+	U8     material_data[MAX_TES*16];
 
 	const U32 MAX_TE_BUFFER = 4096;
 	U8 packed_buffer[MAX_TE_BUFFER];
@@ -1401,30 +1430,12 @@ S32 LLPrimitive::unpackTEMessage(LLDataPacker &dp)
 	cur_ptr++;
 	cur_ptr += unpackTEField(cur_ptr, packed_buffer+size, (U8 *)glow, 1, face_count, MVT_U8);
 	cur_ptr++;
-	cur_ptr += unpackTEField(cur_ptr, packed_buffer+size, (U8 *)material_id, 16, face_count, MVT_LLUUID);
-
-#if 0
-	for (U32 curFace = 0U; curFace < face_count; ++curFace)
-	{
-		std::string materialID(reinterpret_cast<char *>(&material_id[curFace * 16]), 16);
-		std::string materialIDString;
-		for (unsigned int i = 0U; i < 4U; ++i)
-		{
-			if (i != 0U)
-			{
-				materialIDString += "-";
-			}
-			const U32 *value = reinterpret_cast<const U32*>(&materialID.c_str()[i * 4]);
-			materialIDString += llformat("%08x", *value);
-		}
-
-		llinfos << "STINSON DEBUG: found material ID for face #" << curFace << " => " << materialIDString << llendl;
-	}
-#endif
+	cur_ptr += unpackTEField(cur_ptr, packed_buffer+size, (U8 *)material_data, 16, face_count, MVT_LLUUID);
 
 	for (i = 0; i < face_count; i++)
 	{
 		memcpy(image_ids[i].mData,&image_data[i*16],16);	/* Flawfinder: ignore */ 	
+		material_ids[i].set(&material_data[i * 16]);
 	}
 	
 	LLColor4 color;
@@ -1438,6 +1449,7 @@ S32 LLPrimitive::unpackTEMessage(LLDataPacker &dp)
 		retval |= setTEBumpShinyFullbright(i, bump[i]);
 		retval |= setTEMediaTexGen(i, media_flags[i]);
 		retval |= setTEGlow(i, (F32)glow[i] / (F32)0xFF);
+		retval |= setTEMaterialID(i, material_ids[i]);
 		coloru = LLColor4U(colors + 4*i);
 
 		// Note:  This is an optimization to send common colors (1.f, 1.f, 1.f, 1.f)
diff --git a/indra/llprimitive/llprimitive.h b/indra/llprimitive/llprimitive.h
index 8dcaa8c740..e1635740ef 100644
--- a/indra/llprimitive/llprimitive.h
+++ b/indra/llprimitive/llprimitive.h
@@ -42,6 +42,7 @@ class LLMessageSystem;
 class LLVolumeParams;
 class LLColor4;
 class LLColor3;
+class LLMaterialID;
 class LLTextureEntry;
 class LLDataPacker;
 class LLVolumeMgr;
@@ -353,6 +354,7 @@ public:
 	virtual S32 setTEFullbright(const U8 te, const U8 fullbright);
 	virtual S32 setTEMediaFlags(const U8 te, const U8 flags);
 	virtual S32 setTEGlow(const U8 te, const F32 glow);
+	virtual S32 setTEMaterialID(const U8 te, const LLMaterialID& pMaterialID);
 	virtual BOOL setMaterial(const U8 material); // returns TRUE if material changed
 
 	void copyTEs(const LLPrimitive *primitive);
diff --git a/indra/llprimitive/llprimtexturelist.cpp b/indra/llprimitive/llprimtexturelist.cpp
index 36e04df7b7..20438578b3 100644
--- a/indra/llprimitive/llprimtexturelist.cpp
+++ b/indra/llprimitive/llprimtexturelist.cpp
@@ -27,6 +27,7 @@
 #include "linden_common.h"
 
 #include "llprimtexturelist.h"
+#include "llmaterialid.h"
 #include "lltextureentry.h"
 #include "llmemtype.h"
 
@@ -359,6 +360,15 @@ S32 LLPrimTextureList::setGlow(const U8 index, const F32 glow)
 	return TEM_CHANGE_NONE;
 }
 
+S32 LLPrimTextureList::setMaterialID(const U8 index, const LLMaterialID& pMaterialID)
+{
+	if (index < mEntryList.size())
+	{
+		return mEntryList[index]->setMaterialID(pMaterialID);
+	}
+	return TEM_CHANGE_NONE;
+}
+
 S32 LLPrimTextureList::size() const
 {
 	return mEntryList.size();
diff --git a/indra/llprimitive/llprimtexturelist.h b/indra/llprimitive/llprimtexturelist.h
index 3cfa52f1d5..691df44c18 100644
--- a/indra/llprimitive/llprimtexturelist.h
+++ b/indra/llprimitive/llprimtexturelist.h
@@ -34,6 +34,7 @@
 
 
 class LLTextureEntry;
+class LLMaterialID;
 
 // this is a list of LLTextureEntry*'s because in practice the list's elements
 // are of some derived class: LLFooTextureEntry
@@ -102,6 +103,7 @@ public:
 	S32 setFullbright(const U8 index, const U8 t);
 	S32 setMediaFlags(const U8 index, const U8 media_flags);
 	S32 setGlow(const U8 index, const F32 glow);
+	S32 setMaterialID(const U8 index, const LLMaterialID& pMaterialID);
 
 	S32 size() const;
 
diff --git a/indra/llprimitive/lltextureentry.cpp b/indra/llprimitive/lltextureentry.cpp
index 34eff17519..b04fa809d2 100644
--- a/indra/llprimitive/lltextureentry.cpp
+++ b/indra/llprimitive/lltextureentry.cpp
@@ -29,6 +29,7 @@
 #include "lluuid.h"
 #include "llmediaentry.h"
 #include "lltextureentry.h"
+#include "llmaterialid.h"
 #include "llsdutil_math.h"
 #include "v4color.h"
 
@@ -83,6 +84,8 @@ LLTextureEntry::LLTextureEntry(const LLTextureEntry &rhs)
 	mBump = rhs.mBump;
 	mMediaFlags = rhs.mMediaFlags;
 	mGlow = rhs.mGlow;
+	mMaterialID = rhs.mMaterialID;
+
 	if (rhs.mMediaEntry != NULL) {
 		// Make a copy
 		mMediaEntry = new LLMediaEntry(*rhs.mMediaEntry);
@@ -103,6 +106,7 @@ LLTextureEntry &LLTextureEntry::operator=(const LLTextureEntry &rhs)
 		mBump = rhs.mBump;
 		mMediaFlags = rhs.mMediaFlags;
 		mGlow = rhs.mGlow;
+		mMaterialID = rhs.mMaterialID;
 		if (mMediaEntry != NULL) {
 			delete mMediaEntry;
 		}
@@ -130,6 +134,7 @@ void LLTextureEntry::init(const LLUUID& tex_id, F32 scale_s, F32 scale_t, F32 of
 	mBump = bump;
 	mMediaFlags = 0x0;
     mGlow = 0;
+	mMaterialID.clear();
 	
 	setColor(LLColor4(1.f, 1.f, 1.f, 1.f));
 	if (mMediaEntry != NULL) {
@@ -159,6 +164,7 @@ bool LLTextureEntry::operator!=(const LLTextureEntry &rhs) const
 	if (mBump != rhs.mBump) return (true);
 	if (mMediaFlags != rhs.mMediaFlags) return (true);
 	if (mGlow != rhs.mGlow) return (true);
+	if (mMaterialID != rhs.mMaterialID) return (true);
 	return(false);
 }
 
@@ -174,6 +180,7 @@ bool LLTextureEntry::operator==(const LLTextureEntry &rhs) const
 	if (mBump != rhs.mBump) return (false);
 	if (mMediaFlags != rhs.mMediaFlags) return false;
 	if (mGlow != rhs.mGlow) return false;
+	if (mMaterialID != rhs.mMaterialID) return (false);
 	return(true);
 }
 
@@ -523,6 +530,16 @@ S32 LLTextureEntry::setGlow(F32 glow)
 	return TEM_CHANGE_NONE;
 }
 
+S32 LLTextureEntry::setMaterialID(const LLMaterialID& pMaterialID)
+{
+	if (mMaterialID != pMaterialID)
+	{
+		mMaterialID = pMaterialID;
+		return TEM_CHANGE_TEXTURE;
+	}
+	return TEM_CHANGE_NONE;
+}
+
 void LLTextureEntry::setMediaData(const LLMediaEntry &media_entry)
 {
     mMediaFlags |= MF_HAS_MEDIA;
diff --git a/indra/llprimitive/lltextureentry.h b/indra/llprimitive/lltextureentry.h
index 437b85e03f..b681ce8ca7 100644
--- a/indra/llprimitive/lltextureentry.h
+++ b/indra/llprimitive/lltextureentry.h
@@ -30,6 +30,7 @@
 #include "lluuid.h"
 #include "v4color.h"
 #include "llsd.h"
+#include "llmaterialid.h"
 
 // These bits are used while unpacking TEM messages to tell which aspects of
 // the texture entry changed.
@@ -121,6 +122,7 @@ public:
 	S32	 setTexGen(U8 texGen);
 	S32  setMediaTexGen(U8 media);
     S32  setGlow(F32 glow);
+	S32  setMaterialID(const LLMaterialID& pMaterialID);
 	
 	virtual const LLUUID &getID() const { return mID; }
 	const LLColor4 &getColor() const { return mColor; }
@@ -139,6 +141,7 @@ public:
 	U8	 getTexGen() const	{ return mMediaFlags & TEM_TEX_GEN_MASK; }
 	U8	 getMediaTexGen() const { return mMediaFlags; }
     F32  getGlow() const { return mGlow; }
+	const LLMaterialID& getMaterialID() const { return mMaterialID; };
 
     // *NOTE: it is possible for hasMedia() to return true, but getMediaData() to return NULL.
     // CONVERSELY, it is also possible for hasMedia() to return false, but getMediaData()
@@ -193,6 +196,7 @@ protected:
 	U8					mBump;					// Bump map, shiny, and fullbright
 	U8					mMediaFlags;			// replace with web page, movie, etc.
 	F32                 mGlow;
+	LLMaterialID        mMaterialID;
 
 	// Note the media data is not sent via the same message structure as the rest of the TE
 	LLMediaEntry*		mMediaEntry;			// The media data for the face
diff --git a/indra/newview/llfloaterdebugmaterials.cpp b/indra/newview/llfloaterdebugmaterials.cpp
index 471e8e3dbf..85a0fc7a2f 100644
--- a/indra/newview/llfloaterdebugmaterials.cpp
+++ b/indra/newview/llfloaterdebugmaterials.cpp
@@ -44,6 +44,7 @@
 #include "llfontgl.h"
 #include "llhttpclient.h"
 #include "lllineeditor.h"
+#include "llmaterialid.h"
 #include "llscrolllistcell.h"
 #include "llscrolllistctrl.h"
 #include "llscrolllistitem.h"
@@ -56,7 +57,9 @@
 #include "lltextvalidate.h"
 #include "lluicolortable.h"
 #include "lluictrl.h"
+#include "lluuid.h"
 #include "llviewerobject.h"
+#include "llviewerobjectlist.h"
 #include "llviewerparcelmgr.h"
 #include "llviewerregion.h"
 #include "v4color.h"
@@ -217,6 +220,10 @@ BOOL LLFloaterDebugMaterials::postBuild()
 	mPutScrollList = findChild<LLScrollListCtrl>("put_scroll_list");
 	llassert(mPutScrollList != NULL);
 
+	mQueryVisibleObjectsButton = findChild<LLButton>("query_visible_object_button");
+	llassert(mQueryVisibleObjectsButton != NULL);
+	mQueryVisibleObjectsButton->setCommitCallback(boost::bind(&LLFloaterDebugMaterials::onQueryVisibleObjectsClicked, this));
+
 	mGoodPostButton = findChild<LLButton>("good_post_button");
 	llassert(mGoodPostButton != NULL);
 	mGoodPostButton->setCommitCallback(boost::bind(&LLFloaterDebugMaterials::onGoodPostClicked, this));
@@ -316,6 +323,7 @@ LLFloaterDebugMaterials::LLFloaterDebugMaterials(const LLSD& pParams)
 	mPutSetButton(NULL),
 	mPutClearButton(NULL),
 	mPutScrollList(NULL),
+	mQueryVisibleObjectsButton(NULL),
 	mGoodPostButton(NULL),
 	mBadPostButton(NULL),
 	mPostScrollList(NULL),
@@ -365,6 +373,42 @@ void LLFloaterDebugMaterials::onPutClearClicked()
 	requestPutMaterials(false);
 }
 
+void LLFloaterDebugMaterials::onQueryVisibleObjectsClicked()
+{
+	S32 numViewerObjects = gObjectList.getNumObjects();
+	for (S32 viewerObjectIndex = 0; viewerObjectIndex < numViewerObjects; ++viewerObjectIndex)
+	{
+		const LLViewerObject *viewerObject = gObjectList.getObject(viewerObjectIndex);
+		if ((viewerObject != NULL) && !viewerObject->isDead())
+		{
+			U8 objectNumTEs = viewerObject->getNumTEs();
+
+			if (objectNumTEs > 0U)
+			{
+				const LLUUID& objectId = viewerObject->getID();
+				U32 objectLocalId = viewerObject->getLocalID();
+				S32 objectNumFaces = viewerObject->getNumFaces();
+				const LLViewerRegion* objectRegion = viewerObject->getRegion();
+				for (U8 curTEIndex = 0U; curTEIndex < objectNumTEs; ++curTEIndex)
+				{
+					const LLTextureEntry* objectTE = viewerObject->getTE(curTEIndex);
+					llassert(objectTE != NULL);
+					const LLMaterialID& objectMaterialID = objectTE->getMaterialID();
+					if (!objectMaterialID.isNull())
+					{
+						llinfos << "STINSON DEBUG: #" << (viewerObjectIndex + 1) << ": " << objectId.asString()
+							<< " (" << ((objectRegion != NULL) ? objectRegion->getRegionID().asString() : "<null>")
+							<< ") [" << objectLocalId << "]  {" << static_cast<unsigned int>(curTEIndex)
+							<< "} : numFaces(" << objectNumFaces << ")  material("
+							<< convertToPrintableMaterialID(objectMaterialID) << ")" << llendl;
+					}
+				}
+			}
+
+		}
+	}
+}
+
 void LLFloaterDebugMaterials::onGoodPostClicked()
 {
 	requestPostMaterials(true);
@@ -1357,6 +1401,22 @@ std::string LLFloaterDebugMaterials::convertToPrintableMaterialID(const LLSD& pB
 	return materialIDString;
 }
 
+std::string LLFloaterDebugMaterials::convertToPrintableMaterialID(const LLMaterialID& pMaterialID) const
+{
+	std::string materialID(reinterpret_cast<const char *>(pMaterialID.get()), 16);
+	std::string materialIDString;
+	for (unsigned int i = 0U; i < 4; ++i)
+	{
+		if (i != 0U)
+		{
+			materialIDString += "-";
+		}
+		const U32 *value = reinterpret_cast<const U32*>(&materialID.c_str()[i * 4]);
+		materialIDString += llformat("%08x", *value);
+	}
+	return materialIDString;
+}
+
 S32 LLFloaterDebugMaterials::getNormalMapOffsetX() const
 {
 	return getLineEditorValue(mNormalMapOffsetX);
diff --git a/indra/newview/llfloaterdebugmaterials.h b/indra/newview/llfloaterdebugmaterials.h
index 92543d5ae1..8419535ac0 100644
--- a/indra/newview/llfloaterdebugmaterials.h
+++ b/indra/newview/llfloaterdebugmaterials.h
@@ -38,6 +38,7 @@
 class LLButton;
 class LLColorSwatchCtrl;
 class LLLineEditor;
+class LLMaterialID;
 class LLScrollListCtrl;
 class LLSD;
 class LLTextBase;
@@ -74,6 +75,7 @@ private:
 	void          onValueEntered(LLUICtrl* pUICtrl);
 	void          onPutSetClicked();
 	void          onPutClearClicked();
+	void          onQueryVisibleObjectsClicked();
 	void          onGoodPostClicked();
 	void          onBadPostClicked();
 	void          onRegionCross();
@@ -114,6 +116,7 @@ private:
 	void          updateStatusMessage();
 	void          updateControls();
 	std::string   convertToPrintableMaterialID(const LLSD& pBinaryHash) const;
+	std::string   convertToPrintableMaterialID(const LLMaterialID& pMaterialID) const;
 
 	S32           getNormalMapOffsetX() const;
 	S32           getNormalMapOffsetY() const;
@@ -158,6 +161,7 @@ private:
 	LLButton*                   mPutSetButton;
 	LLButton*                   mPutClearButton;
 	LLScrollListCtrl*           mPutScrollList;
+	LLButton*                   mQueryVisibleObjectsButton;
 	LLButton*                   mGoodPostButton;
 	LLButton*                   mBadPostButton;
 	LLScrollListCtrl*           mPostScrollList;
diff --git a/indra/newview/llviewerobject.cpp b/indra/newview/llviewerobject.cpp
index 2bc7430e06..212b135a78 100644
--- a/indra/newview/llviewerobject.cpp
+++ b/indra/newview/llviewerobject.cpp
@@ -41,6 +41,7 @@
 #include "llframetimer.h"
 #include "llinventory.h"
 #include "llinventorydefines.h"
+#include "llmaterialid.h"
 #include "llmaterialtable.h"
 #include "llmutelist.h"
 #include "llnamevalue.h"
@@ -4267,6 +4268,26 @@ S32 LLViewerObject::setTEGlow(const U8 te, const F32 glow)
 	return retval;
 }
 
+S32 LLViewerObject::setTEMaterialID(const U8 te, const LLMaterialID& pMaterialID)
+{
+	S32 retval = 0;
+	const LLTextureEntry *tep = getTE(te);
+	if (!tep)
+	{
+		llwarns << "No texture entry for te " << (S32)te << ", object " << mID << llendl;
+	}
+	else if (pMaterialID != tep->getMaterialID())
+	{
+		retval = LLPrimitive::setTEMaterialID(te, pMaterialID);
+		setChanged(TEXTURE);
+		if (mDrawable.notNull() && retval)
+		{
+			gPipeline.markTextured(mDrawable);
+		}
+	}
+	return retval;
+}
+
 
 S32 LLViewerObject::setTEScale(const U8 te, const F32 s, const F32 t)
 {
diff --git a/indra/newview/llviewerobject.h b/indra/newview/llviewerobject.h
index 1fb30db8f2..255d0cd080 100644
--- a/indra/newview/llviewerobject.h
+++ b/indra/newview/llviewerobject.h
@@ -56,6 +56,7 @@ class LLDrawable;
 class LLHost;
 class LLHUDText;
 class LLWorld;
+class LLMaterialID;
 class LLNameValue;
 class LLNetMap;
 class LLMessageSystem;
@@ -88,18 +89,6 @@ typedef void (*inventory_callback)(LLViewerObject*,
 								   S32 serial_num,
 								   void*);
 
-// for exporting textured materials from SL
-struct LLMaterialExportInfo
-{
-public:
-	LLMaterialExportInfo(S32 mat_index, S32 texture_index, LLColor4 color) : 
-	  mMaterialIndex(mat_index), mTextureIndex(texture_index), mColor(color) {};
-
-	S32			mMaterialIndex;
-	S32			mTextureIndex;
-	LLColor4	mColor;
-};
-
 struct PotentialReturnableObject
 {
 	LLBBox			box;
@@ -320,6 +309,7 @@ public:
 	/*virtual*/	S32		setTEFullbright(const U8 te, const U8 fullbright );
 	/*virtual*/	S32		setTEMediaFlags(const U8 te, const U8 media_flags );
 	/*virtual*/ S32     setTEGlow(const U8 te, const F32 glow);
+	/*virtual*/ S32     setTEMaterialID(const U8 te, const LLMaterialID& pMaterialID);
 	/*virtual*/	BOOL	setMaterial(const U8 material);
 	virtual		void	setTEImage(const U8 te, LLViewerTexture *imagep); // Not derived from LLPrimitive
 	virtual     void    changeTEImage(S32 index, LLViewerTexture* new_image)  ;
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index e99898a83c..fb53e5c677 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -36,6 +36,7 @@
 #include "lldir.h"
 #include "llflexibleobject.h"
 #include "llfloatertools.h"
+#include "llmaterialid.h"
 #include "llmaterialtable.h"
 #include "llprimitive.h"
 #include "llvolume.h"
@@ -1960,6 +1961,17 @@ S32 LLVOVolume::setTEGlow(const U8 te, const F32 glow)
 	return  res;
 }
 
+S32 LLVOVolume::setTEMaterialID(const U8 te, const LLMaterialID& pMaterialID)
+{
+	S32 res = LLViewerObject::setTEMaterialID(te, pMaterialID);
+	if (res)
+	{
+		gPipeline.markTextured(mDrawable);
+		mFaceMappingChanged = TRUE;
+	}
+	return  res;
+}
+
 S32 LLVOVolume::setTEScale(const U8 te, const F32 s, const F32 t)
 {
 	S32 res = LLViewerObject::setTEScale(te, s, t);
diff --git a/indra/newview/llvovolume.h b/indra/newview/llvovolume.h
index 5482c80f2b..ff6dca9737 100644
--- a/indra/newview/llvovolume.h
+++ b/indra/newview/llvovolume.h
@@ -37,6 +37,7 @@
 
 class LLViewerTextureAnim;
 class LLDrawPool;
+class LLMaterialID;
 class LLSelectNode;
 class LLObjectMediaDataClient;
 class LLObjectMediaNavigateClient;
@@ -185,6 +186,7 @@ public:
 	/*virtual*/ S32		setTEBumpShinyFullbright(const U8 te, const U8 bump);
 	/*virtual*/ S32		setTEMediaFlags(const U8 te, const U8 media_flags);
 	/*virtual*/ S32		setTEGlow(const U8 te, const F32 glow);
+	/*virtual*/ S32		setTEMaterialID(const U8 te, const LLMaterialID& pMaterialID);
 	/*virtual*/ S32		setTEScale(const U8 te, const F32 s, const F32 t);
 	/*virtual*/ S32		setTEScaleS(const U8 te, const F32 s);
 	/*virtual*/ S32		setTEScaleT(const U8 te, const F32 t);
diff --git a/indra/newview/skins/default/xui/en/floater_debug_materials.xml b/indra/newview/skins/default/xui/en/floater_debug_materials.xml
index 0e6e1d7901..17ca0e3450 100644
--- a/indra/newview/skins/default/xui/en/floater_debug_materials.xml
+++ b/indra/newview/skins/default/xui/en/floater_debug_materials.xml
@@ -827,6 +827,14 @@
         <button
             follows="left|top"
             height="22"
+            label="Query Visible Objects"
+            layout="topleft"
+            name="query_visible_object_button"
+            top_pad="0"
+            width="214"/>
+        <button
+            follows="left|top"
+            height="22"
             label="Post Good Material ID"
             layout="topleft"
             name="good_post_button"
diff --git a/indra/newview/tests/llmediadataclient_test.cpp b/indra/newview/tests/llmediadataclient_test.cpp
index 0254c5881f..37f94b82df 100644
--- a/indra/newview/tests/llmediadataclient_test.cpp
+++ b/indra/newview/tests/llmediadataclient_test.cpp
@@ -39,6 +39,7 @@
 #include "../llvovolume.h"
 
 #include "../../llprimitive/llmediaentry.cpp"
+#include "../../llprimitive/llmaterialid.cpp"
 #include "../../llprimitive/lltextureentry.cpp"
 #include "../../llmessage/tests/llcurl_stub.cpp"