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K. Jahrmann:
"Interactive Grass Rendering in Real Time Using Modern OpenGL Features";
Supervisor: M. Wimmer; Institut für Computergraphik und Algorithmen, 2016; final examination: 2016-10-13.

Grass species are an important part of vegetation all over the world and can be found in
all climatic zones. Therefore, grass can be found in almost all outside scenarios. Until
today, there are only few sophisticated algorithms for rendering grass in real time due to
the high amount of geometrical complexity. As a result, most algorithms visualize grass
as a collection of billboards or use other image-based methods, which have problems
dealing with animation or physical interaction. Another disadvantage of image-based
methods is that they often have artifacts when viewed from specific angles, because they
are just two-dimensional images embedded in three-dimensional space.
In this thesis we will introduce a fully geometric approach of grass rendering working
at interactive framerates. The algorithm is very generic and is able to be adjusted and
extended in various ways in order to be applicable to most scenarios of rendering grass
or grass-like vegetation.

http://publik.tuwien.ac.at/files/publik_253532.pdf