import * as THREE from 'three/webgpu';
import type { LightsNode, MeshPhysicalNodeMaterialParameters, NodeBuilder, NodeMaterial } from 'three/webgpu';
import type { TSLFloatNode, TSLNode, TSLVec3Node } from '../types/tsl.js';
/** Fragment-reconstructed surface inputs understood by the deferred adapter. */
export interface DeferredSurfaceNodes {
    positionWorldNode?: TSLVec3Node | null | undefined;
    positionViewNode?: TSLVec3Node | null | undefined;
    viewDirectionViewNode?: TSLVec3Node | null | undefined;
    normalWorldNode?: TSLVec3Node | null | undefined;
    normalViewNode?: TSLVec3Node | null | undefined;
    colorNode?: TSLNode | null | undefined;
    opacityNode?: TSLFloatNode | null | undefined;
    depthNode?: TSLFloatNode | null | undefined;
    roughnessNode?: TSLFloatNode | null | undefined;
    metalnessNode?: TSLFloatNode | null | undefined;
    emissiveNode?: TSLNode | null | undefined;
    aoNode?: TSLFloatNode | null | undefined;
    envNode?: TSLNode | null | undefined;
    lightsNode?: LightsNode | null | undefined;
    receivedShadowPositionNode?: TSLVec3Node | null | undefined;
    receivedShadowNode?: ((mapShadow: TSLNode) => TSLNode) | null | undefined;
    castShadowPositionNode?: TSLVec3Node | null | undefined;
    castShadowNode?: TSLNode | null | undefined;
}
/** Surface inputs after package-derived view-space and shadow defaults are added. */
export interface ResolvedDeferredSurfaceNodes extends DeferredSurfaceNodes {
}
export interface DeferredSurfaceNodeMaterialParameters extends MeshPhysicalNodeMaterialParameters {
    surface?: DeferredSurfaceNodes | null | undefined;
}
/**
 * Resolve derived view-space nodes and received-shadow defaults for a deferred surface.
 *
 * @param surface Deferred surface node contract.
 * @returns Resolved surface without mutating the input object.
 */
export declare function resolveDeferredSurfaceNodes(surface: null | undefined): null;
export declare function resolveDeferredSurfaceNodes(surface: DeferredSurfaceNodes): ResolvedDeferredSurfaceNodes;
export declare function resolveDeferredSurfaceNodes(surface: DeferredSurfaceNodes | null | undefined): ResolvedDeferredSurfaceNodes | null;
/**
 * Restore the material nodes replaced by applyDeferredSurfaceNodes().
 *
 * @param material Target node material.
 * @returns The target material.
 */
export declare function clearDeferredSurfaceNodes<TMaterial extends NodeMaterial>(material: TMaterial): TMaterial;
/**
 * Bind the standard parts of a deferred surface contract to any compatible NodeMaterial.
 * Custom fragment/output nodes remain responsible for consuming the bound properties.
 *
 * @param material Target node material.
 * @param surface Deferred surface node contract.
 * @returns The target material.
 */
export declare function applyDeferredSurfaceNodes<TMaterial extends NodeMaterial>(material: TMaterial, surface: DeferredSurfaceNodes | null | undefined): TMaterial;
/**
 * Physical NodeMaterial adapter for surfaces reconstructed in the fragment stage.
 *
 * @class DeferredSurfaceNodeMaterial
 * @extends MeshPhysicalNodeMaterial
 * @short Shades reconstructed deferred surfaces with native Three.js scene lighting.
 * @category Materials
 * @tags WebGPU, TSL, Deferred
 */
export declare class DeferredSurfaceNodeMaterial extends THREE.MeshPhysicalNodeMaterial {
    static get type(): string;
    isDeferredSurfaceNodeMaterial: boolean;
    surface: DeferredSurfaceNodes | null;
    resolvedSurface: ResolvedDeferredSurfaceNodes | null;
    /**
     * Create a deferred-surface physical material.
     *
     * @param parameters Physical material parameters plus an optional deferred surface.
     */
    constructor(parameters?: DeferredSurfaceNodeMaterialParameters);
    /** Bind a deferred surface to this material, or pass null to clear it. */
    setSurface(surface: DeferredSurfaceNodes | null | undefined): this;
    /** Remove the deferred surface and restore the previous material nodes. */
    clearSurface(): this;
    setupLighting(builder: NodeBuilder): TSLNode;
    copy(source: DeferredSurfaceNodeMaterial): this;
}