import type { vec3, vec4, vec2, mat4 } from '@predy-js/math';
import type { CalculateGroup } from '../cal/CalculateGroup';
import type { SpriteItem, SpriteItemRenderInfo } from './SpriteItem';
import type { GPUCapability, SharedShaderWithSource } from '@predy-js/render-interface';
import { Material, Mesh } from '@predy-js/render-interface';
import type { SpriteVFXItemRenderData } from './SpriteVFXItem';
import type { Transform } from '../../math/Transform';
import type { FilterShaderDefine } from '../../render/filter';
import type { Composition } from '../../player/Composition';
export declare let maxSpriteTextureCount: number;
export declare function setSpriteMeshMaxFragmentTextures(c: number): void;
export declare function setSpriteMeshMaxItemCountByGPU(gpu: GPUCapability): 16 | 128 | 32;
export declare function getImageItemRenderInfo(item: SpriteItem, env: string): SpriteItemRenderInfo;
export declare function setSpriteReleasable(releasable: boolean): void;
export declare let maxSpriteMeshItemCount: number;
export declare function setSpriteMeshMaxItemCount(c: any): void;
export type SpriteRenderData = {
    life: number;
    transform: Transform;
    color: vec4;
    anchor: vec2;
    texOffset?: vec4;
    hide?: boolean;
    active?: boolean;
    filterBlend?: number;
};
export declare function spriteMeshShaderIdFromRenderInfo(renderInfo: SpriteItemRenderInfo, count: number): string | undefined;
export declare function spriteMeshShaderFromFilter(filter?: FilterShaderDefine, options?: {
    env?: string;
    count?: number;
    ignoreBlend?: boolean;
    wireframe?: boolean;
}): SharedShaderWithSource;
export declare function alphaVideoMeshShaderFromFilter(av: number, options?: {
    env?: string;
    count?: number;
    ignoreBlend?: boolean;
    wireframe?: boolean;
}): SharedShaderWithSource;
export declare function spriteMeshShaderFromRenderInfo(renderInfo: SpriteItemRenderInfo, count: number): SharedShaderWithSource;
export declare class SpriteMesh {
    items: SpriteItem[];
    splitLayer: boolean;
    composition: Composition;
    readonly mesh: Mesh;
    readonly maxItemCount: number;
    readonly lineMode: boolean;
    readonly isSpriteMesh: boolean;
    readonly calculateGroup: CalculateGroup;
    private _isDirty;
    private _preMultiAlpha;
    private _mtlSlotCount;
    private readonly _wireframe;
    private mainDataBlock;
    private texDataBlock;
    private readonly av?;
    constructor(renderInfo: SpriteItemRenderInfo, composition: Composition);
    createMaterial(renderInfo: SpriteItemRenderInfo, count: number): Material;
    set modelMatrix(m: mat4);
    get itemCount(): number;
    get availableItemCount(): number;
    get listIndexStart(): number;
    get listIndexEnd(): number;
    setItems(items: SpriteItem[]): boolean;
    destroy(): void;
    getItemInitData(item: SpriteItem, idx: number, pointStartIndex: number, textureIndex: number): {
        aPoint: any;
        index: any;
    };
    _getItemGeometryData(item: SpriteItem, aIndex: any): {
        index: number[];
        aPoint: number[];
    };
    setItemInitData(data: any, geoStartIndex: any): void;
    getItemRenderData(item: any): SpriteVFXItemRenderData | void;
    getItemRegionData(item: any): {
        position: vec3;
        size: vec2;
        quat: vec4;
        color: vec4;
    };
    updateItem(item: SpriteItem, init?: boolean): void;
    removeItem(item: SpriteItem): void;
    addItem(item: SpriteItem): number;
    applyChange(): void;
}