/**
 * SkinnedMeshRenderer: renders a mesh with GPU skinning.
 * Same pattern as MeshRenderer but adds a bone storage buffer (group 3).
 */
import { Component } from '@certe/atmos-core';
import type { Mat4Type } from '@certe/atmos-math';
import type { Mesh } from './mesh.js';
import type { SkinnedPipelineResources } from './skinned-pipeline.js';
import type { Material } from './material.js';
import type { BoundingSphere } from './bounds.js';
/** Minimal context for SkinnedMeshRenderer — satisfied by RenderSystem via duck typing. */
export interface SkinnedRendererContext {
    readonly device: GPUDevice;
    readonly skinnedPipelineResources: SkinnedPipelineResources;
}
export declare class SkinnedMeshRenderer extends Component {
    mesh: Mesh | null;
    material: Material | null;
    meshSource: string;
    materialSource: string;
    castShadow: boolean;
    jointCount: number;
    uniformBuffer: GPUBuffer | null;
    bindGroup: GPUBindGroup | null;
    materialBindGroup: GPUBindGroup | null;
    /** Storage buffer for bone matrices (jointCount * 64 bytes). */
    boneBuffer: GPUBuffer | null;
    /** Bind group for group 3 (bone matrices). */
    boneBindGroup: GPUBindGroup | null;
    /** Shadow bone bind group (group 2 in shadow pipeline). */
    shadowBoneBindGroup: GPUBindGroup | null;
    private _device;
    private _pipelineResources;
    private readonly _mvp;
    private readonly _invModel;
    private readonly _normalMat;
    private readonly _matData;
    private _lastTextureVersion;
    private readonly _worldBoundsCenter;
    private readonly _worldBounds;
    init(ctx: SkinnedRendererContext, mesh: Mesh, jointCount: number, material?: Material): void;
    initMaterialBindGroup(sceneBuffer: GPUBuffer): void;
    /**
     * Write bone matrices from the sibling AnimationMixer component.
     * Call this after AnimationMixer.onUpdate() has run.
     */
    writeBoneMatrices(boneMatrices: Float32Array): void;
    writeUniforms(viewProjection: Mat4Type): void;
    draw(pass: GPURenderPassEncoder, shadowBindGroup?: GPUBindGroup): void;
    get worldBoundingSphere(): BoundingSphere | null;
    onDestroy(): void;
    destroyMesh(): void;
}
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