declare const _default: "\n#ifdef LIT_GGX_SPECULAR\n    uniform material_anisotropyIntensity: f32;\n    uniform material_anisotropyRotation: vec2f;\n#endif\n\nfn getAnisotropy() {\n    dAnisotropy = 0.0;\n    dAnisotropyRotation = vec2f(1.0, 0.0);\n\n#ifdef LIT_GGX_SPECULAR\n    dAnisotropy = uniform.material_anisotropyIntensity;\n    dAnisotropyRotation = uniform.material_anisotropyRotation;\n#endif\n\n#ifdef STD_ANISOTROPY_TEXTURE\n    let anisotropyTex: vec3f = textureSampleBias({STD_ANISOTROPY_TEXTURE_NAME}, {STD_ANISOTROPY_TEXTURE_NAME}Sampler, {STD_ANISOTROPY_TEXTURE_UV}, uniform.textureBias).rgb;\n    dAnisotropy *= anisotropyTex.b;\n\n    let anisotropyRotationFromTex: vec2f = anisotropyTex.rg * 2.0 - vec2f(1.0);\n    let rotationMatrix: mat2x2f = mat2x2f(dAnisotropyRotation.x, dAnisotropyRotation.y, -dAnisotropyRotation.y, dAnisotropyRotation.x);\n    dAnisotropyRotation = rotationMatrix * anisotropyRotationFromTex;\n#endif\n\n    dAnisotropy = clamp(dAnisotropy, 0.0, 1.0);\n}\n";
export default _default;