#version 100

struct m3x2
{
    vec3 r0;
    vec3 r1;
};

struct Block
{
    vec4 uvTransform;
    vec4 subUVTransform;
};

uniform Block _block;

attribute vec2 pos;
varying vec2 vUV;
attribute vec2 uv;

vec3 transform3x2(m3x2 t, vec3 v)
{
    return vec3(dot(t.r0, v), dot(t.r1, v), dot(vec3(0.0, 0.0, 1.0), v));
}

void main()
{
    m3x2 param = m3x2(vec3(1.0, 0.0, 0.0), vec3(0.0, 1.0, 0.0));
    vec3 param_1 = vec3(pos, 1.0);
    vec3 p = transform3x2(param, param_1);
    gl_Position = vec4(p, 1.0);
    vUV = (uv * _block.subUVTransform.xy) + _block.subUVTransform.zw;
    vUV = (vUV * _block.uvTransform.xy) + _block.uvTransform.zw;
}