CCEffect %{
techniques:
  - passes:
      - vert: sprite-vs:vert
        frag: sprite-fs:frag
        depthStencilState:
          depthTest: false
          depthWrite: false
        blendState:
          targets:
            - blend: true
              blendSrc: src_alpha
              blendDst: one_minus_src_alpha
              blendDstAlpha: one_minus_src_alpha
        rasterizerState:
          cullMode: none
        properties:
          alphaThreshold: { value: 0.5 }
          _LineColor:
            {
              value: [1, 1, 1, 1],
              editor: { type: color, displayName: "颜色" },
            }
          _LineWidth:
            { value: 0.1, editor: { range: [0.0, 10.0], displayName: "宽度" } }
          _TexelSize:
            { value: [0.001, 0.001], editor: { displayName: "Texel Size" } }

}%


CCProgram shared-ubos %{
#pragma define-mate USE_HIGH_SAMPLER

uniform Constants {
  vec4 _LineColor;
  vec2 _TexelSize;
  float _LineWidth;
  float test;
};
}%

CCProgram sprite-vs %{
precision highp float;
#include <builtin/uniforms/cc-global>
#include <shared-ubos>

in vec3 a_position;
in vec2 a_texCoord;
in vec4 a_color;

out vec4 v_vertexColor;
out vec2 v_uv0;
out vec4 v_uv1;
out vec4 v_uv2;
#if USE_HIGH_SAMPLER
  out vec4 v_uv3;
  out vec4 v_uv4;
#endif

vec4 vert() {
  vec4 pos = vec4(a_position, 1);
  pos = cc_matViewProj * pos;
  v_vertexColor = a_color;
  
  vec2 width = _LineWidth * _TexelSize.xy;
  v_uv0 = a_texCoord;
  v_uv1.xy = v_uv0 + vec2(0.0, 1.0) * width;
  v_uv1.zw = v_uv0 + vec2(0.0, - 1.0) * width;
  v_uv2.xy = v_uv0 + vec2(-1.0, 0.0) * width;
  v_uv2.zw = v_uv0 + vec2(1.0, 0.0) * width;
  #if USE_HIGH_SAMPLER
    v_uv3.xy = v_uv0 + vec2(-1.0, - 1.0) * width;
    v_uv3.zw = v_uv0 + vec2(1.0, 1.0) * width;
    v_uv4.xy = v_uv0 + vec2(-1.0, 1.0) * width;
    v_uv4.zw = v_uv0 + vec2(1.0, - 1.0) * width;
  #endif
  return pos;
}
}%

CCProgram sprite-fs %{
precision highp float;
#include <builtin/internal/embedded-alpha>
#include <builtin/internal/alpha-test>
#include <Lib/color.chunk>
#include <shared-ubos>

in vec4 v_vertexColor;
in vec2 v_uv0;
in vec4 v_uv1;
in vec4 v_uv2;
#if USE_HIGH_SAMPLER
  in vec4 v_uv3;
  in vec4 v_uv4;
#endif
#pragma builtin(local)
layout(set = 2, binding = 12)uniform sampler2D cc_spriteTexture;
uniform sampler2D _Noisetex;

vec4 frag() {
  
  vec4 color0 = texture(cc_spriteTexture, v_uv1.xy);
  vec4 color1 = texture(cc_spriteTexture, v_uv1.zw);
  vec4 color2 = texture(cc_spriteTexture, v_uv2.xy);
  vec4 color3 = texture(cc_spriteTexture, v_uv2.zw);
  float w = color0.a * color1.a * color2.a * color3.a;
  
  #if USE_HIGH_SAMPLER
    vec4 color4 = texture(cc_spriteTexture, v_uv3.xy);
    vec4 color5 = texture(cc_spriteTexture, v_uv3.zw);
    vec4 color6 = texture(cc_spriteTexture, v_uv4.xy);
    vec4 color7 = texture(cc_spriteTexture, v_uv4.zw);
    w *= color4.a * color5.a * color6.a * color7.a;
  #endif
  
  vec4 color = texture(cc_spriteTexture, v_uv0);
  color.xyz = mix(_LineColor.rgb, color.rgb, w);
  
  color *= v_vertexColor;
  ALPHA_TEST(color);
  return color;
}
}%