import { AssetError, type MaterialAsset } from '@forgeax/engine-types';
import type { AssetRegistry } from '../asset-registry';
/** Validate the asset-owned parameter schema and pass module identifiers. */
export declare function validateMaterialPasses(asset: MaterialAsset): AssetError | null;
/**
 * Sprite 9-slice values fail-fast validation
 * (feat-20260527-sprite-nineslice M2 / w8, plan-strategy §D-1 + AC-08).
 *
 * Fires when:
 *  - asset.kind === 'material'
 *  - first pass shader === 'forgeax::sprite'
 *  - values.slices is present
 *
 * Six fail-fast branches (1:1 with w4 test):
 *   (1) any component is negative
 *   (2) slices.x + slices.z >= region.zw[0]   (X-axis overlap)
 *   (3) slices.y + slices.w >= region.zw[1]   (Y-axis overlap)
 *   (4) any component is NaN
 *   (5) any component is Infinity
 *   (6) length !== 4
 *
 * Reuses the existing 'asset-invalid-value' member of the closed
 * `AssetErrorCode` 13-member union (no new code added per
 * AGENTS.md §Error model). The `.expected` literal mirrors the AI-User
 * Charter §3 string; `.hint` inlines the offending sum + the relevant
 * `region.zw` numeral so AI users can copy-paste the prompt straight
 * back into the IDE for self-recovery (plan-strategy §R-4).
 *
 * @returns AssetError on failure, null on success.
 */
export declare function validateSpriteSlices(asset: MaterialAsset): AssetError | null;
export declare function validateParamType(type: string, value: unknown): boolean;
/**
 * feat-20260527-sprite-nineslice M4 / w18 (D-9): register-time soft-warn
 * for sliceMode=1 (tile) bound to a sampler whose addressMode is not
 * 'repeat'. Bumps `nineslice.tile-needs-repeat-sampler` once per offending
 * catalogue call. Never throws -- the counter is the sole AI-user-facing
 * signal (charter P3 machine-readable; AC-08 closed, never extends
 * AssetErrorCode).
 *
 * feat-20260614 M8 (D-19): `values.sampler` is now an embedded GUID
 * string (dash-form), resolved against the catalogue rather than a handle.
 */
export declare function detectTileNeedsRepeatSampler(registry: AssetRegistry, asset: MaterialAsset): void;
/**
 * feat-20260613-material-paramschema-driven-binding M4 / w23 (D-5 graceful):
 * Return the texture-field name set for the given material-shader id,
 * derived from the registered shader's paramSchema via `derive(paramSchema)
 * .textureFieldNames`. Returns `undefined` when the shader is not yet
 * registered (cross-worktree shader-late-register, plan R-4).
 *
 * Used by `extractFrame` to know which values fields the shader
 * declares as texture handles; the extract layer validates handle-vs-
 * scalar typing and drops misclassified slots so the record stage's
 * MISSING_TEXTURE_HANDLE fallback can take over (white default texture)
 * rather than letting a stray handle reach `device.createBindGroup`.
 */
export declare function materialShaderTextureFieldNames(registry: AssetRegistry, shaderId: string): ReadonlySet<string> | undefined;
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