precision mediump float;

attribute vec2 aVertexPosition;

uniform mat4 uModelMatrix;
uniform mat4 uViewMatrix;
uniform mat4 uProjectionMatrix;

varying vec4 clipSpace;
varying vec2 uv;

const float tiling = 6.0;

void main() {
  clipSpace = uProjectionMatrix * uViewMatrix * uModelMatrix * vec4(aVertexPosition.x, 0.0, aVertexPosition.y, 1.0);
  gl_Position = clipSpace;
  uv = vec2(aVertexPosition.x/2.0+0.5,aVertexPosition.y/2.0+0.5) * tiling;
}