/**
 * Copyright(c) Live2D Inc. All rights reserved.
 *
 * Use of this source code is governed by the Live2D Open Software license
 * that can be found at https://www.live2d.com/eula/live2d-open-software-license-agreement_en.html.
 */


precision mediump float;
varying vec2 v_texCoord; //v2f.texcoord
varying vec4 v_myPos;
uniform vec4 u_baseColor; //v2f.color
uniform vec4 u_channelFlag;
uniform sampler2D s_texture0; //_MainTex


void main()
{
  float isInside =
    step(u_baseColor.x, v_myPos.x/v_myPos.w)
    * step(u_baseColor.y, v_myPos.y/v_myPos.w)
    * step(v_myPos.x/v_myPos.w, u_baseColor.z)
    * step(v_myPos.y/v_myPos.w, u_baseColor.w);
  gl_FragColor = u_channelFlag * texture2D(s_texture0, v_texCoord).a * isInside;
}