1 attribute mediump vec2 aPosition;
2 attribute mediump vec2 aTexCoord;
3 attribute mediump vec4 aColor;
4 uniform mediump vec2 uOffset;
5 uniform highp mat4 uMvpMatrix;
6 varying mediump vec2 vTexCoord;
7 varying mediump vec4 vColor;
11 mediump vec4 position = vec4( aPosition.xy + uOffset, 0.0, 1.0 );
12 gl_Position = uMvpMatrix * position;
13 vTexCoord = aTexCoord;