declare const _default: "\n\n#ifndef LINEARIZE_DEPTH\n#define LINEARIZE_DEPTH\n\nfloat linearizeDepth(float z, vec4 cameraParams) {\n    if (cameraParams.w == 0.0)\n        return (cameraParams.z * cameraParams.y) / (cameraParams.y + z * (cameraParams.z - cameraParams.y));\n    else\n        return cameraParams.z + z * (cameraParams.y - cameraParams.z);\n}\n\n#ifndef CAMERAPLANES\n#define CAMERAPLANES\nuniform vec4 camera_params; // x: 1 / camera_far,      y: camera_far,     z: camera_near,        w: is_ortho\n#endif\n\n#ifdef GL2\nfloat linearizeDepth(float z) {\n    return linearizeDepth(z, camera_params);\n}\n#else\n#ifndef UNPACKFLOAT\n#define UNPACKFLOAT\nfloat unpackFloat(vec4 rgbaDepth) {\n    const vec4 bitShift = vec4(1.0 / (256.0 * 256.0 * 256.0), 1.0 / (256.0 * 256.0), 1.0 / 256.0, 1.0);\n    return dot(rgbaDepth, bitShift);\n}\n#endif\n#endif\n#endif\n";
export default _default;