#version 300 es
precision highp float;

// Inputs
in vec2 texture_coordinates;
uniform float time;
uniform sampler2D uSampler1;
uniform sampler2D uSampler2;

// Output
out vec4 color;

const float PI = 3.1415;

void main() {

  if ((texture_coordinates.x + texture_coordinates.y) > 1.) {
    color = texture(uSampler1, texture_coordinates);
  }
  else {
    color = texture(uSampler2, texture_coordinates);
  }

  // color = vec4( texture_coordinates, (sin( time * PI) + 1.)/2. , 1.);
}