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derivative_maps_knald
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derivative_maps_knald [2014/11/30 08:10] adavies |
derivative_maps_knald [2015/03/28 13:54] adavies [What are Derivative Maps?] |
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| ====== Derivative Maps ====== | ====== Derivative Maps ====== | ||
| + | The Derivative maps within Knald are generated on the fly from the [[height_maps_knald|Height maps]] provided by [[the_integrator_knald|The Integrator]]. They are adjustable in real time in terms of intensity via the [[the_main_tab_knald#general|Bump Scale]] slider. | ||
| - | Derivative Maps are a new method of bump mapping that does not use tangent spaces. This has numerous advantages over traditional normal map based workflows((http://mmikkelsen3d.blogspot.co.uk/2011/07/derivative-maps.html))((http://mmikkelsen3d.blogspot.co.uk/2011/11/derivative-maps-in-xnormal.html)). | + | You can also create Derivative maps quickly and efficiently from photographs, via pre-rendered Height via Knald's [[color_to_normals_knald|Color To Normals]] functionality and our world class [[the_baker_knald|baker]]. |
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| + | Please see the [[color_to_normals_knald|Color To Normals]] & [[the_baker_knald|The Baker]] pages for more information. | ||
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| + | ===== What are Derivative Maps? ===== | ||
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| + | Derivative Maps are a recent method of bump mapping that does not use tangent spaces. This has numerous advantages over traditional normal map based workflows((http://mmikkelsen3d.blogspot.co.uk/2011/07/derivative-maps.html))((http://mmikkelsen3d.blogspot.co.uk/2011/11/derivative-maps-in-xnormal.html)). | ||
| These are as follows: | These are as follows: | ||
| - | * Reduces foot-print | + | * Reduces foot-print. |
| - | * Is much better suited for synthesized surfaces/tessellation | + | * Is much better suited for synthesized surfaces/tessellation. |
| * Does not distinguish between regular geometry and tessellation. | * Does not distinguish between regular geometry and tessellation. | ||
| * Works with per pixel generated texture coordinates such as [[http://www.slideshare.net/icastano/cascades-demo-secrets|Tri-Planar Texturing]]. | * Works with per pixel generated texture coordinates such as [[http://www.slideshare.net/icastano/cascades-demo-secrets|Tri-Planar Texturing]]. | ||
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| * Mirroring trivially works. | * Mirroring trivially works. | ||
| * No need to recalculate tangent spaces on meshes with complex geometric deformations. | * No need to recalculate tangent spaces on meshes with complex geometric deformations. | ||
| + | * Better visually during texture magnification. | ||
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| + | [{{https://s3.amazonaws.com/docs.knaldtech.com/docuwiki/normal_derivative_knald.png?nolink|Normal/Derivative Settings}}] | ||
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| + | ===== The Derivative Maps Group's Settings ===== | ||
| + | **Flip Green:** Here you can change the axis in the dropdown to match the Normal/Derivative maps for your engine or application as required. By default Knald is set to X+Y+Z+, so if you are using a [[normal_maps_knald|Normal]] or Derivative map that differs from this configuration, you will need to change this setting. To change this setting check the Flip Green check box to save your choice. | ||
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| + | **Bump Scale:** The global strength of the processed [[normal_maps_knald|Normal]] and Derivative maps. | ||
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| + | [{{https://s3.amazonaws.com/docs.knaldtech.com/docuwiki/sci_fi_derivative.jpg?nolink&512|Derivative Map}}] | ||
derivative_maps_knald.txt · Last modified: 2017/05/23 03:49 (external edit)
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