X-Git-Url: http://review.tizen.org/git/?p=platform%2Fcore%2Fuifw%2Fdali-toolkit.git;a=blobdiff_plain;f=dali-toolkit%2Finternal%2Fgraphics%2Fshaders%2Ftext-scroller-shader.vert;h=c152b5e3be9704691ef535c9817806c0f15299b8;hp=6c2cd059475f6461670f92aab6afcbe344a7d708;hb=16561908a5e0e9bbef2aa11c9cdc3a27aeb1bd54;hpb=e4d638dd0b325673bbd504aef409676fc5593a9d

diff --git a/dali-toolkit/internal/graphics/shaders/text-scroller-shader.vert b/dali-toolkit/internal/graphics/shaders/text-scroller-shader.vert
index 6c2cd05..c152b5e 100644
--- a/dali-toolkit/internal/graphics/shaders/text-scroller-shader.vert
+++ b/dali-toolkit/internal/graphics/shaders/text-scroller-shader.vert
@@ -1,9 +1,9 @@
 attribute mediump vec2 aPosition;
 varying highp vec2 vTexCoord;
 uniform highp vec3 uSize;
-uniform mediump float uDelta;
+uniform highp float uDelta;
 uniform mediump vec2 uTextureSize;
-uniform mediump float uGap;
+uniform highp float uGap;
 uniform mediump float uHorizontalAlign;
 uniform mediump float uVerticalAlign;
 
@@ -18,13 +18,13 @@ uniform mediump vec2 anchorPoint;
 
 void main()
 {
-  mediump vec2 visualOffset = mix( offset, offset/uSize.xy, offsetSizeMode.xy );
-  mediump vec2 visualSize = mix( uSize.xy * size, size, offsetSizeMode.zw );
+  highp vec2 visualSize = mix(size * uSize.xy, size, offsetSizeMode.zw);
+  highp vec2 visualOffset = mix(offset * uSize.xy, offset, offsetSizeMode.xy);
 
-  vTexCoord.x = ( uDelta + uHorizontalAlign * ( uTextureSize.x - visualSize.x - uGap ) + floor( aPosition.x * visualSize.x ) + 0.5 - uGap * 0.5 ) / uTextureSize.x + 0.5;
-  vTexCoord.y = ( uVerticalAlign * ( uTextureSize.y - visualSize.y ) + floor( aPosition.y * visualSize.y ) + 0.5 ) / ( uTextureSize.y ) + 0.5;
+  vTexCoord.x = ( uDelta + uHorizontalAlign * ( uTextureSize.x - visualSize.x - uGap ) + aPosition.x * visualSize.x - uGap * 0.5 ) / uTextureSize.x + 0.5;
+  vTexCoord.y = ( uVerticalAlign * ( uTextureSize.y - visualSize.y ) + aPosition.y * visualSize.y ) / ( uTextureSize.y ) + 0.5;
 
-  mediump vec4 vertexPosition = vec4( floor( ( aPosition + anchorPoint ) * visualSize + ( visualOffset + origin ) * uSize.xy ), 0.0, 1.0 );
+  highp vec4 vertexPosition = vec4( ( aPosition + anchorPoint ) * visualSize + visualOffset + origin * uSize.xy, 0.0, 1.0 );
 
   gl_Position = uMvpMatrix * vertexPosition;
 }
\ No newline at end of file