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Submitted by , posted on 08 November 2003
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Image Description, by
Screenshots from demo "Shaderey" - a winner of ATi/Beyond3D DX9 shader
competition.
The demo displays outdoors scene in a non-photorealistic rendering (NPR)
style, plays camera animation, allows manual camera control and has a
fast-forward benchmarking mode. Requires DX9 class hardware to run
(afterall, it's a DX9 shader competition).
Some tech details:
Image space: edge detection from normal/depth differences (similar ATi's
at SigGraph2002), plus sort of "hatching" in dark areas.
Color quantization and distortion for "painterly" look. This is done on
downsampled image: convert into HSV colorspace, do some funky operations on
it and convert back into RGB. All in single pass with Pixel Shader 2.0.
Atmospheric light scattering (Hoffman et al. at SigGraph2003).
Projected shadows on terrain.
Planar reflections w/ EMBM for lakes.
Brute-force terrain rendering. I planned to do simple GeoMipMapping at
first, but the demo isn't vertex limited even in brute force case
Can use Multiple Render Targets to render color and normals/depth in
single pass.
Demo can be downloaded from:
http://www.gim.ktu.lt/nesnausk/nearaz/projShaderey.html
Full source code is included (C++, for MSVC6 with DX9 SDK and Boost 1.30.0).
Aras Pranckevicius aka NeARAZ
http://www.gim.ktu.lt/nesnausk/nearaz/
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