# Billboard shader, Model matrix?

**URL:** <https://forum.defold.com/t/billboard-shader-model-matrix/12983>\
**Category:** Questions\
**Created:** [October 26, 2017, 11:03pm UTC](https://forum.defold.com/t/billboard-shader-model-matrix/12983 "2017-10-26T23:03:00Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![sicher](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/sicher/32/8_2.png) [@sicher](https://forum.defold.com/u/sicher)\
**Post date:** [October 27, 2017, 9:11am UTC](https://forum.defold.com/t/billboard-shader-model-matrix/12983/2 "2017-10-27T09:11:16Z")

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The vertex positions are all in world space, not in model space. We have an issue for adding inverse world matrix so you can translate positions to object space if needed: DEF-2518

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