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