import type { WebGlShaderType } from '../../renderers/webgl/WebGlShaderNode.js';

export const Default: WebGlShaderType = {
  vertex: `
    # ifdef GL_FRAGMENT_PRECISION_HIGH
    precision highp float;
    # else
    precision mediump float;
    # endif

    attribute vec2 a_position;
    attribute vec2 a_textureCoords;
    attribute vec4 a_color;
    attribute vec2 a_nodeCoords;

    uniform vec2 u_resolution;
    uniform float u_pixelRatio;

    varying vec4 v_color;
    varying vec2 v_textureCoords;
    varying vec2 v_nodeCoords;

    void main() {
      vec2 normalized = a_position * u_pixelRatio / u_resolution;
      vec2 zero_two = normalized * 2.0;
      vec2 clip_space = zero_two - 1.0;

      v_color = a_color;
      v_textureCoords = a_textureCoords;
      v_nodeCoords = a_nodeCoords;

      gl_Position = vec4(clip_space * vec2(1.0, -1.0), 0, 1);
    }
  `,
  fragment: `
    # ifdef GL_FRAGMENT_PRECISION_HIGH
    precision highp float;
    # else
    precision mediump float;
    # endif

    uniform vec2 u_resolution;
    uniform sampler2D u_texture;

    varying vec4 v_color;
    varying vec2 v_textureCoords;

    void main() {
      gl_FragColor = v_color * texture2D(u_texture, v_textureCoords);
    }
  `,
};