PagedGeometry Engine         Real-time rendering of massive, dense forests, with not only trees, but bushes, grass, rocks, and other "clutter".
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PagedGeometryForestScreen4.jpg

Author: John 'JohnJ' Judnich
Current Maintainer: tdev? (Thomas Fischer)
Project: OGRE Add-on Project (forests)
Bugtracker / Issue Ticket system / Support: Google Code Issues Page(external link)
Supported Platforms: Windows, Linux, (Mac)
Supported Ogre Releases (Mercurial version): 1.6 and newer
Documentation: API Documentation, Tutorials, Examples
Sources:

  • Homepage: Google Code(external link)
  • Direct URL: hg clone https://code.google.com/p/ogre-paged/

Product Support & News: PagedGeometry Addon Forum(external link)
License: zlib/libpng(external link) (free for any use)
Description: Real-time rendering of massive, dense forests, with not only trees, but bushes, grass, rocks, and other "clutter". Supports dynamic transitioned -LOD between batched geometry and static impostors (extendable).


What is PagedGeometry?

The PagedGeometry engine is an add-on to Ogre which provides highly optimized methods for rendering massive amounts of small meshes, covering a possibly infinite area. This is especially well suited for dense forests and outdoor scenes, with millions of trees, bushes, grass, rocks, etc., etc.

Paged geometry gives you many advantages over plain entities, the main one being speed: With proper usage of detail levels, outdoor scenes managed by PagedGeometry can be >100x faster than plain entities. Another advantage is that the geometry is paged; in other words, only entities which are immediately needed (to be displayed) are loaded. This allows you to expand the boundaries of your virtual world almost infinitely (only limited by floating point precision), providing the player with a more realistically scaled game area.

Features

  • Complete API documentation included, describing every feature in detail
  • 4 tutorials included to teach you how to get PagedGeometry set up and optimized in your project
  • 7 examples included to demonstrate the actual use of various selected features
  • Dynamic geometry paging system, which enables infinite worlds
  • Batched rendering -LOD for optimized rendering of near-by trees
  • Impostor rendering -LOD for extremely fast rendering of distant trees
  • Flexible -LOD display system, which can be expanded to display geometry with any technique you can implement
  • Flexible -LOD configuration system, which allows you to configure any combination of supported LODs in any way you want
  • Optional cross-LOD fade transitions, and far -LOD fade-out, fully configurable
  • Flexible PageLoader system, allowing you to dynamically load geometry from any source you can imagine
  • Easy addition / removal of trees with bit packing, allowing millions of trees to be stored in RAM using only a few MBs
  • Color-map support for trees, which enables you to apply terrain lightmaps to your trees with one simple function call
  • Animated, optimized grass rendering system. Supports density maps, color maps, wind animations, height range restriction, and much more.

Requirements

  • Right out-of-the-box, the CG shader language is used for runtime generated shaders. Therefore, a correctly setup CG plugin is required.

Screenshots & Videos

Recent Screenshots

Expansive jungle scene with 240,000 trees and animated vegetation, running at 100 - 150 FPS on a GeForce 7800 GT:

PagedGeometryScreen1.jpg

PagedGeometryScreen2.jpg

Detailed forest scene with trees, ferns, mushrooms, flowers, etc., running at ~100 FPS on a GeForce 7800 GT:

PagedGeometryForestScreen1.jpg

PagedGeometryForestScreen2.jpg

PagedGeometryForestScreen3.jpg

PagedGeometryForestScreen5.jpg

Videos (Slightly Outdated)

Jungle Video(external link) (5.53 MB, WMV Format)

Vast Forest Video(external link) (5.62 MB, WMV Format)

Grass Shadows Video(external link) (3.72 MB, WMV Format)

Old Screenshots

Forest Screenshot 1(external link)

Forest Screenshot 2(external link)

Forest Screenshot 3(external link)

Jungle Screenshot 1(external link)

Jungle Screenshot 2(external link)

Jungle Screenshot 3(external link)

Grass Screenshot 1(external link)

Grass Screenshot 2(external link)

Old Videos

Tree Demo Video(external link) (5.27 MB, WMV Format)

Grass Demo Video(external link) (4.49 MB, WMV Format)


Alias: PagedGeometry
Alias: PagedGeometry_Engine


Contributors to this page: An00biS438 points  , MasterD98 points  , jacmoe180265 points  , drwbns1192 points  and Archwyrm .
Page last modified on Friday 10 of May, 2013 16:52:16 UTC by An00biS438 points .


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As an exception, any source code contributed within the content is released into the Public Domain.