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FlightGear Newsletter April 2011: Difference between revisions
→Atmospheric scattering shader
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== Development news == | == Development news == | ||
=== Atmospheric scattering shader === | === Atmospheric scattering shader === | ||
Zan has been working very hard on an experimental atmospheric scattering [[shader]]. The shaders makes use of [http://sponeil.net/ Sean O'Neil's algorithm]. Altough there are some issues with the shader, it looks like it will have a promising future! | Zan has been working very hard on an experimental atmospheric scattering [[shader]]. The shaders makes use of [http://sponeil.net/ Sean O'Neil's algorithm]. Altough there are some issues with the shader, it looks like it will have a promising future! Some screenshots are available at the forum thread [http://www.flightgear.org/forums/viewtopic.php?f=47&t=11274#p117813]. | ||
The shader does some simplifications, but basically tries to recreate physical phenomenom, so the look could be easily modified depending on environmental conditions. But since the values are not so easy to figure out, some testing would be needed for creating nice looking sky for misty weather, rainy weather, cold winter etc. After that, proper equations could be written to transform weather values to scattering parameters. | |||
The shader is not production ready, it has some bugs and terrain (especially fog at horizon) does not match the looks of the skydome. This is a work in process, but might take some times, because the terrain shader is much harder than the skydome shader. | |||
== Nasal for newbies == | == Nasal for newbies == | ||