import { type GpuProgramCacheSnapshot, type GpuProgramIdentity, type MaterialProgram, type RuntimeBackendId } from "@skenora/contracts";
import { type MaterialProgramGlslArtifact } from "@skenora/procedural/emitters";
import { type CompiledMaterialProgram } from "@skenora/procedural";
export interface PreparedGpuProgram {
    readonly identity: GpuProgramIdentity;
    readonly key: string;
    readonly hit: boolean;
    readonly compiled: CompiledMaterialProgram;
    readonly artifact: MaterialProgramGlslArtifact;
}
/** Runtime-owned bounded LRU over generated structural GPU artifacts. */
export declare class GpuProgramCache {
    #private;
    constructor(backend: RuntimeBackendId, maxEntries: number);
    prepare(program: Readonly<MaterialProgram>): PreparedGpuProgram;
    snapshot(): GpuProgramCacheSnapshot;
    dispose(): void;
}
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