2 files changed, 4 insertions, 17 deletions

diff --git a/linden/indra/llimage/llpngwrapper.cpp b/linden/indra/llimage/llpngwrapper.cpp
index 0dd991a..2274a38 100644
--- a/linden/indra/llimage/llpngwrapper.cpp
+++ b/linden/indra/llimage/llpngwrapper.cpp
@@ -56,8 +56,6 @@ LLPngWrapper::LLPngWrapper()
           mCompressionType( 0 ),
           mFilterMethod( 0 ),
           mFinalSize( 0 ),
-          mHasBKGD(false),
-          mBackgroundColor(),
           mGamma(0.f)
 {
 }
@@ -117,9 +115,9 @@ void LLPngWrapper::writeFlush(png_structp png_ptr)
 }
 
 // Read the PNG file using the libpng.  The low-level interface is used here
-// because we want to do various transformations (including setting the
-// matte background if any, and applying gama) which can't be done with
-// the high-level interface. The scanline also begins at the bottom of
+// because we want to do various transformations (including applying gama)
+// which can't be done with the high-level interface.
+// The scanline also begins at the bottom of
 // the image (per SecondLife conventions) instead of at the top, so we
 // must assign row-pointers in "reverse" order.
 BOOL LLPngWrapper::readPng(U8* src, LLImageRaw* rawImage, ImageInfo *infop)
@@ -207,8 +205,7 @@ void LLPngWrapper::normalizeImage()
         //              2. Convert grayscales to RGB
         //              3. Create alpha layer from transparency
         //              4. Ensure 8-bpp for all images
-        //              5. Apply background matte if any
-        //              6. Set (or guess) gamma
+        //              5. Set (or guess) gamma
 
         if (mColorType == PNG_COLOR_TYPE_PALETTE)
         {
@@ -235,12 +232,6 @@ void LLPngWrapper::normalizeImage()
         {
                 png_set_strip_16(mReadPngPtr);
         }
-        mHasBKGD = png_get_bKGD(mReadPngPtr, mReadInfoPtr, &mBackgroundColor);
-        if (mHasBKGD)
-        {
-                png_set_background(mReadPngPtr, mBackgroundColor,
-                        PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
-        }
 
 #if LL_DARWIN
         const F64 SCREEN_GAMMA = 1.8;
@@ -267,7 +258,6 @@ void LLPngWrapper::updateMetaData()
     mBitDepth = png_get_bit_depth(mReadPngPtr, mReadInfoPtr);
     mColorType = png_get_color_type(mReadPngPtr, mReadInfoPtr);
         mChannels = png_get_channels(mReadPngPtr, mReadInfoPtr);
-        mHasBKGD = png_get_bKGD(mReadPngPtr, mReadInfoPtr, &mBackgroundColor);
 }
 
 // Method to write raw image into PNG at dest. The raw scanline begins
diff --git a/linden/indra/llimage/llpngwrapper.h b/linden/indra/llimage/llpngwrapper.h
index 2e6c1dc..0c3168c 100644
--- a/linden/indra/llimage/llpngwrapper.h
+++ b/linden/indra/llimage/llpngwrapper.h
@@ -94,9 +94,6 @@ private:
 
         U32 mFinalSize;
 
-        bool mHasBKGD;
-        png_color_16p mBackgroundColor;
-
         F64 mGamma;
 
         std::string mErrorMessage;