[Home](./index.md) > [server](./server.md) > [Simulation](./server.simulation.md) > [enableDebugRendering](./server.simulation.enabledebugrendering.md) ## Simulation.enableDebugRendering() method Enables or disables debug rendering for the simulation. **Signature:** ```typescript enableDebugRendering(enabled: boolean, filterFlags?: RAPIER.QueryFilterFlags): void; ``` ## Parameters

Parameter	Type	Description
enabled	boolean	Whether to enable debug rendering.
filterFlags	RAPIER.QueryFilterFlags	_(Optional)_ Optional query filter flags for debug rendering. \*\*Side effects:\*\* Emits `SimulationEvent.DEBUG_RENDER` each step while enabled. \*\*Category:\*\* Physics

**Returns:** void ## Remarks When enabled, all colliders and rigid body outlines are rendered. Avoid enabling in production; it can cause noticeable lag.