1 files changed, 18 insertions, 5 deletions

diff --git a/linden/indra/newview/lltexturefetch.cpp b/linden/indra/newview/lltexturefetch.cpp
index 11882b2..a7c43ce 100644
--- a/linden/indra/newview/lltexturefetch.cpp
+++ b/linden/indra/newview/lltexturefetch.cpp
@@ -562,6 +562,14 @@ bool LLTextureFetchWorker::doWork(S32 param)
         {
                 mFetchTimer.reset();
         }
+
+        if (mImagePriority <= 0.0f)
+        {
+                if (mState < WRITE_TO_CACHE)
+                {
+                        return true; // cancel request
+                }
+        }
         
         if (mState == INIT)
         {
@@ -708,7 +716,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
                         mFetcher->lockQueue();
                         mFetcher->removeFromNetworkQueue(this);
                         mFetcher->unlockQueue();
-                        if (!mFormattedImage->getDataSize())
+                        if (mFormattedImage.isNull() || !mFormattedImage->getDataSize())
                         {
                                 // processSimulatorPackets() failed
 //                              llwarns << "processSimulatorPackets() failed to load buffer" << llendl;
@@ -1050,17 +1058,22 @@ void LLTextureFetchWorker::removeFromCache()
 
 bool LLTextureFetchWorker::processSimulatorPackets()
 {
+        if (mFormattedImage.isNull() || mRequestedSize < 0)
+        {
+                // not sure how we got here, but not a valid state, abort!
+                mFormattedImage = NULL;
+                return true;
+        }
+        
         if (mLastPacket >= mFirstPacket)
         {
-                llassert_always(mFormattedImage) ;
                 S32 buffer_size = mFormattedImage->getDataSize();
                 for (S32 i = mFirstPacket; i<=mLastPacket; i++)
                 {
-                        llassert_always(mPackets[i]) ;
+                        llassert_always(mPackets[i]);
                         buffer_size += mPackets[i]->mSize;
                 }
                 bool have_all_data = mLastPacket >= mTotalPackets-1;
-                llassert_always(mRequestedSize > 0);
                 if (buffer_size >= mRequestedSize || have_all_data)
                 {
                         /// We have enough (or all) data
@@ -1641,7 +1654,7 @@ void LLTextureFetch::sendRequestListToSimulators()
                                 S32 packet = req->mLastPacket + 1;
                                 gMessageSystem->nextBlockFast(_PREHASH_RequestImage);
                                 gMessageSystem->addUUIDFast(_PREHASH_Image, req->mID);
-                                gMessageSystem->addS8Fast(_PREHASH_DiscardLevel, (S8)req->mSimRequestedDiscard);
+                                gMessageSystem->addS8Fast(_PREHASH_DiscardLevel, (S8)req->mDesiredDiscard);
                                 gMessageSystem->addF32Fast(_PREHASH_DownloadPriority, req->mImagePriority);
                                 gMessageSystem->addU32Fast(_PREHASH_Packet, packet);
                                 gMessageSystem->addU8Fast(_PREHASH_Type, req->mType);