import {
  a,
  a3 as a2,
  e,
  e2,
  f as f2,
  i,
  n as n2,
  n2 as n3,
  o,
  o2,
  o3,
  t2 as t
} from "./chunk-FQZKJNXZ.js";
import {
  f,
  n
} from "./chunk-K7B6OWCU.js";
import {
  r as r2
} from "./chunk-E3G7BRZB.js";
import {
  x
} from "./chunk-DW42UVIT.js";
import {
  r
} from "./chunk-YXWMMD76.js";

// node_modules/@arcgis/core/views/3d/webgl-engine/core/shaderModules/Float2DrawUniform.js
var o4 = class extends i {
  constructor(r3, o5) {
    super(r3, "vec2", a.Draw, (e3, s, t2, i2) => e3.setUniform2fv(r3, o5(s, t2, i2)));
  }
};

// node_modules/@arcgis/core/views/3d/webgl-engine/core/shaderModules/Texture2DDrawUniform.js
var f3 = class extends i {
  constructor(r3, e3) {
    super(r3, "sampler2D", a.Draw, (o5, s, t2) => o5.bindTexture(r3, e3(s, t2)));
  }
};
function u(s, c2, p = e2.None) {
  const u3 = [new f3(s, c2)];
  if (p & e2.Size) {
    const i2 = s + t;
    u3.push(new o4(i2, (s2, t2) => {
      const i3 = c2(s2, t2);
      return r(i3) ? r2(a3, i3.descriptor.width, i3.descriptor.height) : f;
    }));
  }
  if (p & e2.InvSize) {
    const t2 = s + n3;
    u3.push(new o4(t2, (s2, t3) => {
      const i2 = c2(s2, t3);
      return r(i2) ? r2(a3, 1 / i2.descriptor.width, 1 / i2.descriptor.height) : f;
    }));
  }
  return u3;
}
var a3 = n();

// node_modules/@arcgis/core/chunks/SSAOBlur.glsl.js
var f4 = 4;
function c() {
  const c2 = new o2(), u3 = c2.fragment;
  c2.include(o);
  const m = (f4 + 1) / 2, p = 1 / (2 * m * m);
  return u3.include(a2), u3.uniforms.add([new f2("depthMap", (e3) => e3.depthTexture), new f3("tex", (e3) => e3.colorTexture), new o4("blurSize", (e3) => e3.blurSize), new o3("projScale", (r3, o5) => {
    const t2 = x(o5.camera.eye, o5.camera.center);
    return t2 > 5e4 ? Math.max(0, r3.projScale - (t2 - 5e4)) : r3.projScale;
  }), new e("nearFar", (e3, r3) => r3.camera.nearFar)]), u3.code.add(n2`
    void blurFunction(vec2 uv, float r, float center_d, float sharpness, inout float wTotal, inout float bTotal) {
      float c = texture2D(tex, uv).r;
      float d = linearDepthFromTexture(depthMap, uv, nearFar);

      float ddiff = d - center_d;

      float w = exp(-r * r * ${n2.float(p)} - ddiff * ddiff * sharpness);
      wTotal += w;
      bTotal += w * c;
    }
  `), u3.code.add(n2`
    void main(void) {
      float b = 0.0;
      float w_total = 0.0;

      float center_d = linearDepthFromTexture(depthMap, uv, nearFar);

      float sharpness = -0.05 * projScale / center_d;
      for (int r = -${n2.int(f4)}; r <= ${n2.int(f4)}; ++r) {
        float rf = float(r);
        vec2 uvOffset = uv + rf * blurSize;
        blurFunction(uvOffset, rf, center_d, sharpness, w_total, b);
      }

      gl_FragColor = vec4(b / w_total);
    }
  `), c2;
}
var u2 = Object.freeze(Object.defineProperty({ __proto__: null, build: c }, Symbol.toStringTag, { value: "Module" }));

export {
  u,
  c,
  u2
};
//# sourceMappingURL=chunk-2UEXES4O.js.map