import { ShadowMethodBase, _Shader_ShadowMethodBase } from './ShadowMethodBase';
/**
 * ShadowFilteredMethod provides a softened shadowing technique by bilinearly interpolating shadow comparison
 * results of neighbouring pixels.
 */
export declare class ShadowFilteredMethod extends ShadowMethodBase {
    static assetType: string;
    /**
     * @inheritDoc
     */
    get assetType(): string;
}
import { ShaderRegisterCache, ShaderRegisterData, ShaderRegisterElement } from '@awayjs/stage';
import { LightingShader } from '../shaders/LightingShader';
/**
 * _Shader_ShadowFilteredMethod provides a softened shadowing technique by bilinearly interpolating shadow comparison
 * results of neighbouring pixels.
 */
export declare class _Shader_ShadowFilteredMethod extends _Shader_ShadowMethodBase {
    private _fragmentConstantsIndex;
    /**
     * Creates a new _Shader_ShadowFilteredMethod.
     */
    init(method: ShadowFilteredMethod, shader: LightingShader): void;
    /**
     * @inheritDoc
     */
    _initConstants(): void;
    /**
     * @inheritDoc
     */
    _getFragmentCode(targetReg: ShaderRegisterElement, registerCache: ShaderRegisterCache, sharedRegisters: ShaderRegisterData): string;
}
//# sourceMappingURL=ShadowFilteredMethod.d.ts.map