Fix texture upload bug for narrow texture of less than 32bpp.
diff --git a/libs/rs/rsAllocation.cpp b/libs/rs/rsAllocation.cpp
index 38cec64..16029a6 100644
--- a/libs/rs/rsAllocation.cpp
+++ b/libs/rs/rsAllocation.cpp
@@ -104,6 +104,7 @@
         glGenTextures(1, &mTextureID);
     }
     glBindTexture(GL_TEXTURE_2D, mTextureID);
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 
     Adapter2D adapt(getContext(), this);
     for(uint32_t lod = 0; (lod + lodOffset) < mType->getLODCount(); lod++) {