/**
 * PostProcessing.ts
 *
 * Post-processing effect stack: bloom, tone mapping, SSAO,
 * color grading, vignette, and chromatic aberration.
 *
 * @module rendering
 */
export type ToneMapper = 'linear' | 'reinhard' | 'aces' | 'filmic';
export interface BloomSettings {
    enabled: boolean;
    threshold: number;
    intensity: number;
    radius: number;
    softKnee: number;
}
export interface SSAOSettings {
    enabled: boolean;
    radius: number;
    intensity: number;
    bias: number;
    samples: number;
}
export interface ColorGradingSettings {
    enabled: boolean;
    temperature: number;
    tint: number;
    saturation: number;
    contrast: number;
    brightness: number;
    gamma: number;
}
export interface VignetteSettings {
    enabled: boolean;
    intensity: number;
    smoothness: number;
    roundness: number;
}
export interface ChromaticAberrationSettings {
    enabled: boolean;
    intensity: number;
}
export interface PostProcessProfile {
    id: string;
    name: string;
    bloom: BloomSettings;
    ssao: SSAOSettings;
    colorGrading: ColorGradingSettings;
    vignette: VignetteSettings;
    chromaticAberration: ChromaticAberrationSettings;
    toneMapping: ToneMapper;
    exposure: number;
    antiAliasing: 'none' | 'fxaa' | 'smaa';
}
export declare const PP_PRESETS: Record<string, Partial<PostProcessProfile>>;
export declare class PostProcessingStack {
    private profiles;
    private activeProfileId;
    constructor();
    createProfile(id: string, name: string): PostProcessProfile;
    loadPreset(presetName: string, id?: string): PostProcessProfile | null;
    getProfile(id: string): PostProcessProfile | undefined;
    getProfileCount(): number;
    removeProfile(id: string): boolean;
    setActive(profileId: string): boolean;
    getActive(): PostProcessProfile | null;
    setEffectEnabled(profileId: string, effect: 'bloom' | 'ssao' | 'colorGrading' | 'vignette' | 'chromaticAberration', enabled: boolean): boolean;
    /**
     * Blend between two profiles by factor t (0 = from, 1 = to).
     * Useful for smooth transitions between environments.
     */
    blendProfiles(fromId: string, toId: string, t: number): PostProcessProfile | null;
}
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