1 attribute mediump vec2 aPosition;
2 attribute mediump vec2 aTexCoord;
3 uniform mediump vec3 uSize;
4 uniform mediump mat4 uMvpMatrix;
5 varying mediump vec2 vTexCoord;
9 gl_Position = uMvpMatrix * vec4(aPosition*uSize.xy,0.0,1.0);
10 vTexCoord = aTexCoord;