Difference between revisions of "Flow map"
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A flow map stores directional information in a texture, also called a vector field. This can be used to control the UV coordinates for a water texture, to make the texture flow around rocks. It can also be used to control the direction of a hairstyle's anisotropic specular highlight. | A flow map stores directional information in a texture, also called a vector field. This can be used to control the UV coordinates for a water texture, to make the texture flow around rocks. It can also be used to control the direction of a hairstyle's anisotropic specular highlight. | ||
| − | [[image:waterflowdemo_graphicsrunner.jpg|frameless]] | + | {| |
| − | [[image:flowmap_graphicsrunner.png| | + | |[[image:waterflowdemo_graphicsrunner.jpg|270px|frameless]] [[image:flowmap_graphicsrunner.png|200px|frameless]] |
| − | Images by [http://graphicsrunner.blogspot.com/2010/08/water-using-flow-maps.html Graphics Runner] | + | |- |
| + | |rowspan="2"|Images by [http://graphicsrunner.blogspot.com/2010/08/water-using-flow-maps.html Graphics Runner] | ||
| + | |} | ||
| + | <br/> | ||
| − | + | [[image:UDK_water_with_flow_map.jpg|link=http://www.youtube.com/watch?v=2X1vFVGAlwk]]<br/> | |
| − | [[image:UDK_water_with_flow_map.jpg | + | |
[http://www.youtube.com/watch?v=2X1vFVGAlwk UDK - Water with Flow Map] video by [http://www.3dality.co.uk/ Hywel Thomas] | [http://www.youtube.com/watch?v=2X1vFVGAlwk UDK - Water with Flow Map] video by [http://www.3dality.co.uk/ Hywel Thomas] | ||
Revision as of 09:32, 19 September 2015
A flow map stores directional information in a texture, also called a vector field. This can be used to control the UV coordinates for a water texture, to make the texture flow around rocks. It can also be used to control the direction of a hairstyle's anisotropic specular highlight.
 
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| Images by Graphics Runner |
UDK - Water with Flow Map video by Hywel Thomas
Flow map tools and discussions
- FlowMap Painter tool
- Graphics Runner: Animating Water Using Flow Maps
- How to paint flow/anisotropic/comb maps in Photoshop Polycount forum thread
- Creating a "comb map" Paint Shop Pro tutorial by Ben Mathis, Polycount forum thread
- Flow Map Painting Script Polycount forum thread
- Creating and using Flow Maps UDK tutorial by Phill Johnson
- How Do You Make a Flow Map? Polycount forum thread
- UDK - Maelstrom/Whirlpool - Creation Process? Polycount forum thread
Flow map whitepapers
- Water Technology of Uncharted Naughty Dog whitepaper from GDC 2012
- Graphics Runner: Animating Water Using Flow Maps by Kyle Hayward
- Water Flow in Portal 2 (PDF) Valve Software whitepaper from SIGGRAPH 2010
