Constant webxr::glwindow::ANAGLYPH_RED_CYAN_FRAGMENT_SHADER

const ANAGLYPH_RED_CYAN_FRAGMENT_SHADER: &str = "
  #version 330 core
  layout(location=0) out vec4 color;
  uniform sampler2D image;
  in vec2 left_coord;
  in vec2 right_coord;
  void main() {
    vec4 left_color = texture(image, left_coord);
    vec4 right_color = texture(image, right_coord);
    float red = left_color.x;
    float green = right_color.y;
    float blue = right_color.z;
    color = vec4(red, green, blue, 1.0);
  }
";