# Bump mapping - updated documentation, example, defaults, everything is simpler now :)

**URL:** https://forum.castle-engine.io/t/bump-mapping-updated-documentation-example-defaults-everything-is-simpler-now/625
**Category:** News
**Created:** [August 5, 2022, 4:05pm UTC](https://forum.castle-engine.io/t/bump-mapping-updated-documentation-example-defaults-everything-is-simpler-now/625 "2022-08-05T16:05:10Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![michalis](https://forum.castle-engine.io/user_avatar/forum.castle-engine.io/michalis/32/3_2.png) [@michalis](https://forum.castle-engine.io/u/michalis)
#### Post date: [August 5, 2022, 4:05pm UTC](https://forum.castle-engine.io/t/bump-mapping-updated-documentation-example-defaults-everything-is-simpler-now/625/1 "2022-08-05T16:05:10Z")

</div>

| [![Steep parallax bump mapping in Castle Game Engine editor](https://forum.castle-engine.io/uploads/default/original/1X/115f6ea9e3e2c2438d3875b5948385398bc17e7b.png)](https://i0.wp.com/castle-engine.io/wp/wp-content/uploads/2022/08/editor_bump_mapping_parallax.png?ssl=1 "Steep parallax bump mapping in Castle Game Engine editor") |

We’ve made some small updates to how _bump mapping (normal maps)_ work and wrote a nice simple [documentation how to use bump mapping](https://castle-engine.io/bump_mapping) in our engine.

1. Advised reading: [bump mapping (normal maps) in Castle Game Engine](https://castle-engine.io/bump_mapping).

2. The default bump mapping is now `bmBasic`, this is much more natural than previous `bmSteepParallaxShadowing`.

3. Using the parallax bump mapping is also easier now. Once you place the height map in the alpha channel of the normal map, just set `TCastleRenderOptions.BumpMapping` to something like `bmSteepParallaxShadowing` and optionally adjust `TCastleRenderOptions.BumpMappingParallaxHeight`. See the [docs](https://castle-engine.io/bump_mapping).

4. Our old bump mapping example was completely reworked, to set up everything in the editor and is now much more straightforward. See [examples/viewport\_and\_scenes/bump\_mapping](https://github.com/castle-engine/castle-engine/tree/master/examples/viewport_and_scenes/bump_mapping).