[Back to Blog](/blog) # Teigha Kernel: OdGsModel invalidation methods

Egor Slupko May 26, 2017 [\#video](/blog/tag/video) [\#rendering](/blog/tag/rendering)

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Teigha’s graphics system allows graphical objects to be cached to increase the performance. However there are conditions when cached data quality becomes too rough (for example, during zooming), so Teigha provides several methods of invalidation (regeneration) for this data. This [video](https://youtu.be/iMKOBtenCUs) illustrates the different invalidation (regeneration) methods in Teigha.

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