# How to disable anti-aliasing in k2DOptimized / 2dWireframe in GLES2?

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3. [Vectorization and Visualization in Drawings](/faq/vectorization-and-visualization-drawings)

2d lines anti-aliasing controlled by LINESMOOTHING system variable. Code:

```
database()->appServices()->setLINESMOOTHING(0);
```

In OdaMfcApp it is disabled by default. LINESMOOTHING system variable enables/disables linear geometry anti-aliasing for all 2d drawing views.