[4.0] Fixed text scroller pre multiplied alpha issue.

Change-Id: Id35f46c30af5b5f14536a879af93f299e467db26

diff --git a/dali-toolkit/internal/text/text-scroller.cpp b/dali-toolkit/internal/text/text-scroller.cpp
index 6f57700..f8089a2 100644 (file)
--- a/dali-toolkit/internal/text/text-scroller.cpp
+++ b/dali-toolkit/internal/text/text-scroller.cpp
@@ -97,6 +97,7 @@ const char* FRAGMENT_SHADER = DALI_COMPOSE_SHADER(
       discard;\n
     \n
     mediump vec4 textTexture = texture2D( sTexture, vTexCoord );\n
+    textTexture.rgb *= mix( 1.0, textTexture.a, preMultipliedAlpha );\n
     \n
     gl_FragColor = textTexture * uColor * visualMixColor();
   }\n