declare const _default: "\nuniform float exposure;\n\n// ACES approximation by Stephen Hill\n\n// sRGB => XYZ => D65_2_D60 => AP1 => RRT_SAT\nconst mat3 ACESInputMat = mat3(\n    0.59719, 0.35458, 0.04823,\n    0.07600, 0.90834, 0.01566,\n    0.02840, 0.13383, 0.83777\n);\n\n// ODT_SAT => XYZ => D60_2_D65 => sRGB\nconst mat3 ACESOutputMat = mat3(\n     1.60475, -0.53108, -0.07367,\n    -0.10208,  1.10813, -0.00605,\n    -0.00327, -0.07276,  1.07602\n);\n\nvec3 RRTAndODTFit(vec3 v) {\n    vec3 a = v * (v + 0.0245786) - 0.000090537;\n    vec3 b = v * (0.983729 * v + 0.4329510) + 0.238081;\n    return a / b;\n}\n\nvec3 toneMap(vec3 color) {\n    color *= exposure / 0.6;\n    color = color * ACESInputMat;\n\n    // Apply RRT and ODT\n    color = RRTAndODTFit(color);\n    color = color * ACESOutputMat;\n\n    // Clamp to [0, 1]\n    color = clamp(color, 0.0, 1.0);\n\n    return color;\n}\n";
export default _default;