1 precision mediump float;
2 attribute mediump vec2 aPosition;
3 varying mediump vec2 vTexCoord;
4 uniform mediump mat4 uMvpMatrix;
5 uniform mediump vec3 uSize;
9 mediump vec4 vertexPosition = vec4(aPosition * uSize.xy, 0.0, 1.0);
10 vTexCoord = aPosition + vec2(0.5);
11 gl_Position = uMvpMatrix * vertexPosition;