// Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.  

CCEffect %{
  techniques:
  - passes:
    - vert: vs
      frag: fs
      blendState:
        targets:
        - blend: true
      rasterizerState:
        cullMode: none
      properties:
        texture: { value: white }
        texture1: { value: white }
        texture2: { value: white }
        texture3: { value: white }
        texture4: { value: white }
        texture5: { value: white }
        texture6: { value: white }
        texture7: { value: white }
}%


CCProgram vs %{
  precision highp float;
  #include <cc-global>
  #include <cc-local>

  in vec3 a_position;
  #if WITH_COLOR
    in vec4 a_color;
    out vec4 v_color;
  #endif
  
  in float a_texture_idx;
  out float texture_idx;


  #if USE_TEXTURE
  in vec2 a_uv0;
  out vec2 v_uv0;
  #endif

  void main () {
    texture_idx = a_texture_idx;
    vec4 pos = vec4(a_position, 1);

    #if CC_USE_MODEL
    pos = cc_matViewProj * cc_matWorld * pos;
    #else
    pos = cc_matViewProj * pos;
    #endif

    #if USE_TEXTURE
    v_uv0 = a_uv0;
    #endif

    #if WITH_COLOR
    v_color = a_color;
    #endif

    gl_Position = pos;
  }
}%


CCProgram fs %{
  precision highp float;
  
  #include <alpha-test>
  #include <texture>

  #if WITH_COLOR
    in vec4 v_color;
  #endif

  #if USE_TEXTURE
    in vec2 v_uv0;
    uniform sampler2D texture;
    uniform sampler2D texture1;
    uniform sampler2D texture2;
    uniform sampler2D texture3;
    uniform sampler2D texture4;
    uniform sampler2D texture5;
    uniform sampler2D texture6;
    uniform sampler2D texture7;
    
    in float texture_idx;
  #endif


  void main () {
    vec4 o = vec4(1, 1, 1, 1);

    #if USE_TEXTURE
      if (texture_idx <= 1.0) {
        CCTexture(texture, v_uv0, o);
      } else if (texture_idx <= 2.0) {
        CCTexture(texture1, v_uv0, o);
      } else if (texture_idx <= 3.0) {
        CCTexture(texture2, v_uv0, o);
      } else if (texture_idx <= 4.0) {
        CCTexture(texture3, v_uv0, o);
      } else if (texture_idx <= 5.0) {
        CCTexture(texture4, v_uv0, o);
      } else if (texture_idx <= 6.0) {
        CCTexture(texture5, v_uv0, o);
      } else if (texture_idx <= 7.0) {
        CCTexture(texture6, v_uv0, o);
      } else if (texture_idx <= 8.0) {
        CCTexture(texture7, v_uv0, o);
      }
    #endif

    #if WITH_COLOR
      o *= v_color;
    #endif

    ALPHA_TEST(o);

    gl_FragColor = o;
  }
}%