import type { ComputeNode, Storage3DTexture } from 'three/webgpu';
import type { TSLBoolNode, TSLFloatNode, TSLVec3Node } from '../../../types/tsl.cjs';
interface SmokeTexturePair {
    read: Storage3DTexture;
    write: Storage3DTexture;
}
interface SmokeScalarTextureResource {
    texture: Storage3DTexture;
}
/** Smoke resources consumed by the solid-aware pressure and masking graphs. */
export interface SmokeSolidBoundarySource {
    simRes: number;
    dyeRes: number;
    neighborStride: TSLFloatNode;
    subcellSolidFractions: boolean;
    _uUseBoundaries: TSLBoolNode;
    inverseCellSizeSquared: TSLVec3Node;
    pressureFactor: TSLFloatNode;
    sorOmega: TSLFloatNode;
    _velocity3D: SmokeTexturePair;
    _density3D: SmokeTexturePair;
    _pressure3D: SmokeScalarTextureResource;
    _divergence3D: SmokeScalarTextureResource;
}
/** Solid-aware smoke passes, including the legacy pressure/gradient aliases. */
export interface SmokeSolidBoundaryPasses {
    applyReadToWrite: ComputeNode;
    applyWriteToRead: ComputeNode;
    divergenceRead: ComputeNode;
    divergenceWrite: ComputeNode;
    pressureRed: ComputeNode;
    pressureBlack: ComputeNode;
    pressureReadRed: ComputeNode;
    pressureWriteRed: ComputeNode;
    pressureReadBlack: ComputeNode;
    pressureWriteBlack: ComputeNode;
    gradientVelocityRead: ComputeNode;
    gradientVelocityWrite: ComputeNode;
    gradientPressureReadVelocityRead: ComputeNode;
    gradientPressureWriteVelocityRead: ComputeNode;
    gradientPressureReadVelocityWrite: ComputeNode;
    gradientPressureWriteVelocityWrite: ComputeNode;
    densityMaskReadToWrite: ComputeNode;
    densityMaskWriteToRead: ComputeNode;
}
/**
 * Build the solid-aware projection passes (divergence, pressure, gradient, velocity/density
 * masking) used when a collider or SDF boundary field is active.
 *
 * Pressure is solved in place on the volume's single r32float texture, so only one red and one
 * black pipeline exist; the legacy Read/Write key pairs are kept as aliases for external drivers
 * that still select passes off `_pressure3D.phase`.
 */
declare function createSmokeSolidBoundaryPasses(smoke: SmokeSolidBoundarySource, solidTexture: Storage3DTexture): SmokeSolidBoundaryPasses;
export { createSmokeSolidBoundaryPasses };