@google/model-viewer/lib/three-components/shader-chunk/common.glsl.d.ts

Easily display interactive 3D models on the web and in AR!

export declare const getDirectionChunk = "\nvec3 getDirection(vec2 uv, float face) {\n    uv = 2.0 * uv - 1.0;\n    vec3 direction = vec3(uv, 1.0);\n    if (face == 0.0) {\n      direction = direction.zyx;\n      direction.z *= -1.0;\n    } else if (face == 1.0) {\n      direction = direction.xzy;\n      direction.z *= -1.0;\n    } else if (face == 3.0) {\n      direction = direction.zyx;\n      direction.x *= -1.0;\n    } else if (face == 4.0) {\n      direction = direction.xzy;\n      direction.y *= -1.0;\n    } else if (face == 5.0) {\n      direction.xz *= -1.0;\n    }\n    return direction;\n}\n";
export declare const getFaceChunk = "\nfloat getFace(vec3 direction) {\n    vec3 absDirection = abs(direction);\n    float face = -1.0;\n    if (absDirection.x > absDirection.z) {\n      if (absDirection.x > absDirection.y)\n        face = direction.x > 0.0 ? 0.0 : 3.0;\n      else\n        face = direction.y > 0.0 ? 1.0 : 4.0;\n    } else {\n      if (absDirection.z > absDirection.y)\n        face = direction.z > 0.0 ? 2.0 : 5.0;\n      else\n        face = direction.y > 0.0 ? 1.0 : 4.0;\n    }\n    return face;\n}\n";
export declare const getUVChunk = "\nvec2 getUV(vec3 direction, float face) {\n    vec2 uv;\n    if (face == 0.0) {\n      uv = vec2(-direction.z, direction.y) / abs(direction.x);\n    } else if (face == 1.0) {\n      uv = vec2(direction.x, -direction.z) / abs(direction.y);\n    } else if (face == 2.0) {\n      uv = direction.xy / abs(direction.z);\n    } else if (face == 3.0) {\n      uv = vec2(direction.z, direction.y) / abs(direction.x);\n    } else if (face == 4.0) {\n      uv = direction.xz / abs(direction.y);\n    } else {\n      uv = vec2(-direction.x, direction.y) / abs(direction.z);\n    }\n    return 0.5 * (uv + 1.0);\n}\n";
export declare const encodings: {
    [x: number]: number;
};
export declare const texelIO: string;
export declare const varianceDefines = "\n#define r0 1.0\n#define v0 0.339\n#define m0 -2.0\n#define r1 0.8\n#define v1 0.276\n#define m1 -1.0\n#define r4 0.4\n#define v4 0.046\n#define m4 2.0\n#define r5 0.305\n#define v5 0.016\n#define m5 3.0\n#define r6 0.21\n#define v6 0.0038\n#define m6 4.0\n";
export declare const roughnessToVariance = "\nfloat roughnessToVariance(float roughness) {\n  float variance = 0.0;\n  if (roughness >= r1) {\n    variance = (r0 - roughness) * (v1 - v0) / (r0 - r1) + v0;\n  } else if (roughness >= r4) {\n    variance = (r1 - roughness) * (v4 - v1) / (r1 - r4) + v1;\n  } else if (roughness >= r5) {\n    variance = (r4 - roughness) * (v5 - v4) / (r4 - r5) + v4;\n  } else {\n    float roughness2 = roughness * roughness;\n    variance = 1.79 * roughness2 * roughness2;\n  }\n  return variance;\n}\n";
export declare const varianceToRoughness = "\nfloat varianceToRoughness(float variance) {\n  float roughness = 0.0;\n  if (variance >= v1) {\n    roughness = (v0 - variance) * (r1 - r0) / (v0 - v1) + r0;\n  } else if (variance >= v4) {\n    roughness = (v1 - variance) * (r4 - r1) / (v1 - v4) + r1;\n  } else if (variance >= v5) {\n    roughness = (v4 - variance) * (r5 - r4) / (v4 - v5) + r4;\n  } else {\n    roughness = pow(0.559 * variance, 0.25);// 0.559 = 1.0 / 1.79\n  }\n  return roughness;\n}\n";
export declare const roughnessToMip = "\nfloat roughnessToMip(float roughness) {\n  float mip = 0.0;\n  if (roughness >= r1) {\n    mip = (r0 - roughness) * (m1 - m0) / (r0 - r1) + m0;\n  } else if (roughness >= r4) {\n    mip = (r1 - roughness) * (m4 - m1) / (r1 - r4) + m1;\n  } else if (roughness >= r5) {\n    mip = (r4 - roughness) * (m5 - m4) / (r4 - r5) + m4;\n  } else if (roughness >= r6) {\n    mip = (r5 - roughness) * (m6 - m5) / (r5 - r6) + m5;\n  } else {\n    mip = -2.0 * log2(1.16 * roughness);// 1.16 = 1.79^0.25\n  }\n  return mip;\n}\n";