Water rendering
Author
Hi!
in want to create a ocean... but really got no idea how to do it.. i know there are a lot of papers, but none of them explained how i get the pixel-color of a reflection/refrection they only always write about a reflection/refrection map, but i really got no idea how to get such a map??
until now i create the water like my terrain, that means a mesh with a lod-algorithm reading its height out of a heightmap.. no problem so far, but i need a realistic movement of the waves and a realistic lighting of the waves..
how many heighttextures should i use (now i use 2 of different sizes)
Hmmm, this is not a trivial task.
I would do plently of google-ing and see what comes up.
I would do plently of google-ing and see what comes up.
fluid simulations are a field unto themselves.
Do you want physically modelled 3d waves? If so it's a tall order, there are some methods of faking it, but generally it's quite a mathematically involved process (and usually not too kind to the processor either).
Do you want physically modelled 3d waves? If so it's a tall order, there are some methods of faking it, but generally it's quite a mathematically involved process (and usually not too kind to the processor either).
Here's a link to some different approches to do water rendering in games:
http://www.gamerendering.com/category/water/
http://www.gamerendering.com/category/water/
Author
i want to make 3d waves but if its 2 hard i think i have to make it 2d..
and the link doesnt work..
and the link doesnt work..
I'd suggest checking out the Nvidia FX Composer sample. It can do waves, 2D bump-mapping effects, or a combination of both. It also does reflections via a cubemap, which is probably the simplest and easiest way to add them. If you wanted you could extend that to have real-time reflections of scene geometry, or underwater refractions (these both require multiple passes, where you render the geometry to a reflection map or a refraction map).
This site has a few variations of the Nvidia shader using XNA, if that helps you out more than just an FX Composer project.
This site has a few variations of the Nvidia shader using XNA, if that helps you out more than just an FX Composer project.
Author
now it also works for me... just didnt work for the first day (seems like the server was down)..
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