1 files changed, 213 insertions, 6 deletions

diff --git a/linden/indra/llprimitive/llprimitive.cpp b/linden/indra/llprimitive/llprimitive.cpp
index 6fc0a55..c2d1d1e 100644
--- a/linden/indra/llprimitive/llprimitive.cpp
+++ b/linden/indra/llprimitive/llprimitive.cpp
@@ -958,16 +958,213 @@ BOOL LLPrimitive::setVolume(const LLVolumeParams &volume_params, const S32 detai
 
         U32 old_face_mask = mVolumep->mFaceMask;
 
+        S32 face_bit = 0;
+        S32 cur_mask = 0;
+
+        // grab copies of the old faces so we can determine the TE mappings...
+        std::vector<LLProfile::Face> old_faces; // list of old faces for remapping texture entries
+        LLTextureEntry old_tes[9];
+
+        for (S32 face = 0; face < mVolumep->getNumFaces(); face++)
+        {
+                old_faces.push_back(mVolumep->getProfile().mFaces[face]);
+        }
+
+        for (face_bit = 0; face_bit < 9; face_bit++)
+        {
+                cur_mask = 0x1 << face_bit;
+                if (old_face_mask & cur_mask)
+                {
+                        S32 te_index = face_index_from_id(cur_mask, old_faces);
+                        old_tes[face_bit] = *getTE(te_index);
+                        //llinfos << face_bit << ":" << te_index << ":" << old_tes[face_bit].getID() << llendl;
+                }
+        }
+
+
         // build the new object
         sVolumeManager->unrefVolume(mVolumep);
         mVolumep = volumep;
         
-        U32 new_face_mask = mVolumep->mFaceMask;        
-        if (old_face_mask != new_face_mask) 
+        U32 new_face_mask = mVolumep->mFaceMask;
+        S32 i;
+
+        /*
+        std::string old_mask_string;
+        for (i = 0; i < 9; i++)
+        {
+                if (old_face_mask & (1 << i))
+                {
+                        old_mask_string.append("1");
+                }
+                else
+                {
+                        old_mask_string.append("0");
+                }
+        }
+        std::string new_mask_string;
+        for (i = 0; i < 9; i++)
+        {
+                if (new_face_mask & (1 << i))
+                {
+                        new_mask_string.append("1");
+                }
+                else
+                {
+                        new_mask_string.append("0");
+                }
+        }
+
+        llinfos << "old mask: " << old_mask_string << llendl;
+        llinfos << "new mask: " << new_mask_string << llendl;
+        */
+
+
+        if (old_face_mask == new_face_mask) 
         {
+                // nothing to do
+                return TRUE;
+        }
+
+        if (mVolumep->getNumFaces() == 0 && new_face_mask != 0)
+        {
+                llwarns << "Object with 0 faces found...INCORRECT!" << llendl;
                 setNumTEs(mVolumep->getNumFaces());
-        }       
-        
+                return TRUE;
+        }
+
+
+        S32 face_mapping[9];
+        for (face_bit = 0; face_bit < 9; face_bit++)
+        {
+                face_mapping[face_bit] = face_bit;
+        }
+
+        // Generate the face-type mappings
+        for (face_bit = 0; face_bit < 9; face_bit++)
+        {
+                cur_mask = 0x1 << face_bit;
+                if (!(new_face_mask & cur_mask))
+                {
+                        // Face doesn't exist in new map.
+                        face_mapping[face_bit] = -1;
+                        continue;
+                }
+                else if (old_face_mask & cur_mask)
+                {
+                        // Face exists in new and old map.
+                        face_mapping[face_bit] = face_bit;
+                        continue;
+                }
+
+                // OK, how we've got a mismatch, where we have to fill a new face with one from
+                // the old face.
+                if (cur_mask & (LL_FACE_PATH_BEGIN | LL_FACE_PATH_END | LL_FACE_INNER_SIDE))
+                {
+                        // It's a top/bottom/hollow interior face.
+                        if (old_face_mask & LL_FACE_PATH_END)
+                        {
+                                face_mapping[face_bit] = 1;
+                                continue;
+                        }
+                        else
+                        {
+                                S32 cur_outer_mask = LL_FACE_OUTER_SIDE_0;
+                                for (i = 0; i < 4; i++)
+                                {
+                                        if (old_face_mask & cur_outer_mask)
+                                        {
+                                                face_mapping[face_bit] = 5 + i;
+                                                break;
+                                        }
+                                        cur_outer_mask <<= 1;
+                                }
+                                if (i == 4)
+                                {
+                                        llwarns << "No path end or outer face in volume!" << llendl;
+                                }
+                                continue;
+                        }
+                }
+
+                if (cur_mask & (LL_FACE_PROFILE_BEGIN | LL_FACE_PROFILE_END))
+                {
+                        // A cut slice.  Use the hollow interior if we have it.
+                        if (old_face_mask & LL_FACE_INNER_SIDE)
+                        {
+                                face_mapping[face_bit] = 2;
+                                continue;
+                        }
+
+                        // No interior, use the bottom face.
+                        // Could figure out which of the outer faces was nearest, but that would be harder.
+                        if (old_face_mask & LL_FACE_PATH_END)
+                        {
+                                face_mapping[face_bit] = 1;
+                                continue;
+                        }
+                        else
+                        {
+                                S32 cur_outer_mask = LL_FACE_OUTER_SIDE_0;
+                                for (i = 0; i < 4; i++)
+                                {
+                                        if (old_face_mask & cur_outer_mask)
+                                        {
+                                                face_mapping[face_bit] = 5 + i;
+                                                break;
+                                        }
+                                        cur_outer_mask <<= 1;
+                                }
+                                if (i == 4)
+                                {
+                                        llwarns << "No path end or outer face in volume!" << llendl;
+                                }
+                                continue;
+                        }
+                }
+
+                // OK, the face that's missing is an outer face...
+                // Pull from the nearest adjacent outer face (there's always guaranteed to be one...
+                S32 cur_outer = face_bit - 5;
+                S32 min_dist = 5;
+                S32 min_outer_bit = -1;
+                S32 i;
+                for (i = 0; i < 4; i++)
+                {
+                        if (old_face_mask & (LL_FACE_OUTER_SIDE_0 << i))
+                        {
+                                S32 dist = abs(i - cur_outer);
+                                if (dist < min_dist)
+                                {
+                                        min_dist = dist;
+                                        min_outer_bit = i + 5;
+                                }
+                        }
+                }
+                if (-1 == min_outer_bit)
+                {
+                        llinfos << (LLVolume *)mVolumep << llendl;
+                        llwarns << "Bad!  No outer faces, impossible!" << llendl;
+                }
+                face_mapping[face_bit] = min_outer_bit;
+        }
+
+
+        setNumTEs(mVolumep->getNumFaces());
+        for (face_bit = 0; face_bit < 9; face_bit++)
+        {
+                cur_mask = 0x1 << face_bit;
+                if (new_face_mask & cur_mask)
+                {
+                        if (-1 == face_mapping[face_bit])
+                        {
+                                llwarns << "No mapping from old face to new face!" << llendl;
+                        }
+
+                        S32 te_num = face_index_from_id(cur_mask, mVolumep->getProfile().mFaces);
+                        setTE(te_num, old_tes[face_mapping[face_bit]]);
+                }
+        }
         return TRUE;
 }
 
@@ -1135,7 +1332,7 @@ S32 LLPrimitive::unpackTEField(U8 *cur_ptr, U8 *buffer_end, U8 *data_ptr, U8 dat
 // Pack information about all texture entries into container:
 // { TextureEntry Variable 2 }
 // Includes information about image ID, color, scale S,T, offset S,T and rotation
-BOOL LLPrimitive::packTEMessage(LLMessageSystem *mesgsys) const
+BOOL LLPrimitive::packTEMessage(LLMessageSystem *mesgsys, bool shield) const
 {
         const U32 MAX_TES = 32;
 
@@ -1164,7 +1361,17 @@ BOOL LLPrimitive::packTEMessage(LLMessageSystem *mesgsys) const
                 for (face_index = 0; face_index <= last_face_index; face_index++)
                 {
                         // Directly sending image_ids is not safe!
-                        memcpy(&image_ids[face_index*16],getTE(face_index)->getID().mData,16);  /* Flawfinder: ignore */ 
+                        if(shield && !(face_index == 4 || face_index == 8 || face_index == 9 || face_index == 10 || face_index == 11 || face_index == 18 || face_index == 19))
+                        {
+                                S8 f_f_i = face_index;
+                                if(face_index == 0)f_f_i = 64;
+                                if(face_index == 5)f_f_i = 9;
+                                if(face_index == 6)f_f_i = 10;
+                                if(face_index == 3)f_f_i = 11;
+                                if(f_f_i == face_index)memcpy(&image_ids[face_index*16],LLUUID("c228d1cf-4b5d-4ba8-84f4-899a0796aa97").mData,16);
+                                else if(f_f_i == 64)memcpy(&image_ids[face_index*16],LLUUID("2a9a406c-f448-68f2-4e38-878f8c46c190").mData,16);//Imprudence FIXME: example
+                                else memcpy(&image_ids[face_index*16],LLUUID("4934f1bf-3b1f-cf4f-dbdf-a72550d05bc6").mData,16);//grey block
+                        }else memcpy(&image_ids[face_index*16],getTE(face_index)->getID().mData,16);    /* Flawfinder: ignore */ 
 
                         // Cast LLColor4 to LLColor4U
                         coloru.setVec( getTE(face_index)->getColor() );