merge

1 files changed, 9 insertions, 6 deletions

diff --git a/indra/newview/lltexturecache.cpp b/indra/newview/lltexturecache.cpp
index 36a7aeb590..5bc2e971eb 100755
--- a/indra/newview/lltexturecache.cpp
+++ b/indra/newview/lltexturecache.cpp
@@ -1922,10 +1922,10 @@ bool LLTextureCache::writeToFastCache(S32 id, LLPointer<LLImageRaw> raw, S32 dis
 		h >>= i;
 		if(w * h *c > 0) //valid
 		{
-			LLPointer<LLImageRaw> newraw = new LLImageRaw(raw->getData(), raw->getWidth(), raw->getHeight(), raw->getComponents());
-			newraw->scale(w, h) ;
-			raw = newraw;
-
+			//make a duplicate to keep the original raw image untouched.
+			raw = raw->duplicate();
+			raw->scale(w, h) ;
+			
 			discardlevel += i ;
 		}
 	}
@@ -1935,9 +1935,12 @@ bool LLTextureCache::writeToFastCache(S32 id, LLPointer<LLImageRaw> raw, S32 dis
 	memcpy(mFastCachePadBuffer + sizeof(S32), &h, sizeof(S32));
 	memcpy(mFastCachePadBuffer + sizeof(S32) * 2, &c, sizeof(S32));
 	memcpy(mFastCachePadBuffer + sizeof(S32) * 3, &discardlevel, sizeof(S32));
-	if(w * h * c > 0) //valid
+
+	S32 copy_size = w * h * c;
+	if(copy_size > 0) //valid
 	{
-		memcpy(mFastCachePadBuffer + TEXTURE_FAST_CACHE_ENTRY_OVERHEAD, raw->getData(), w * h * c);
+		copy_size = llmin(copy_size, TEXTURE_FAST_CACHE_ENTRY_SIZE - TEXTURE_FAST_CACHE_ENTRY_OVERHEAD);
+		memcpy(mFastCachePadBuffer + TEXTURE_FAST_CACHE_ENTRY_OVERHEAD, raw->getData(), copy_size);
 	}
 	S32 offset = id * TEXTURE_FAST_CACHE_ENTRY_SIZE;