attribute vec2 a_TexCoord;
uniform mat3 u_TextureMatrix;
varying vec2 v_TexCoord;
varying vec2 v_Position;
attribute vec2 a_Vertex;
uniform mat3 u_TransformMatrix;
uniform mat3 u_ProjectionMatrix;
uniform vec2 u_Offset;
uniform vec2 u_Resolution;
uniform vec2 u_Center;

void main()
{
    gl_Position = vec4((u_ProjectionMatrix * u_TransformMatrix * vec3(a_Vertex.xy, 1.0)).xy, 1.0, 1.0);
    v_Position = a_Vertex.xy - u_Center;
    v_TexCoord = (u_TextureMatrix * vec3(a_TexCoord,1.0)).xy;
}