🏞️Videos

Part 2 with water reflections
Part 1 older, refractions only

🖼️Screenshots

Gallery here

older screen 2

oldest screen 1

📊Description

Demo using Ogre-Next 3.0 rendering engine for nature scenes.
Featuring:

• Scene - 5 presets
• Terrain - with 4 layers and triplanar. Possible 2nd terrain for horizon.
• Water - flat, animated, with reflection, refraction and depth color shading
• Vegetation - 9 models: tree, palm, plant or (3 pines), 4 rocks, 2 ferns
• Atmosphere - with fog, sun, sky and adjustable parameters. Few static skies with clouds.
• Cars - 3 models, with dynamic reflections
• particles - basic fire with smoke
• camera - with inertia

Based on Tutorial_Terrain. No real PBR textures yet just values.
Models and textures from Stunt Rally 3, details in: _Licenses.txt, _Licenses.txt, _terrain.txt and _skies-new.txt.

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⌨️Keys

F1 - Help text cycle
F3..F8 - Load scene

W,S, A,D, Q,E - move camera: forward,backward, left,right, down,up

Hold:
Shift - for smaller chages,
Ctrl - for bigger chages (for all)

V - Add vegetation (can be used more times)
C - remove all vegetation

G - Add Car in front, next model
H - remove all cars

T - toggle Terrain / flat plane.
P - terrain triplanar toggle
R - terrain wireframe toggle

N - Add Water, at set height (param -1)
M - remove water

K - Add / remove Sky dome, next texture

F - Add fire with smoke particles
I - remove all particles

Up,Down - previous / next parameter e.g. Fog (at param 0)
Left,Right - dec / increase parameter

Numpad /,* - rotate sun yaw
Numpad +,- - change sun pitch (time of day)

To reload shaders (after editing):
Ctrl-F1 - PBS, Ctrl-F2 - Unlit, Ctrl-F3 - Compute, Ctrl-F4 - Terrain
Ctrl-F5 - Force device reelection

❔Info on screen

Top line meaning:

Fps (frames per second), f face (triangles) count [k = 1000], d draw count, i instances
Veget - total vegetation models on scene

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🛠️Building from sources

Linux

See CMakeLists.txt for details, and adjust fixes if needed.

Guide below has setup steps for empty Debian 11 or 12 (works also on Debian based, like Ubuntu):

1. Basic setup for building C++ etc:
   sudo apt-get install g++ binutils gdb git make cmake ninja-build

2. First install Ogre dependencies, as in here
   sudo apt-get install libfreetype6-dev libfreeimage-dev libzzip-dev libxrandr-dev libxcb-randr0-dev libxaw7-dev freeglut3-dev libgl1-mesa-dev libglu1-mesa-dev libx11-xcb-dev libxcb-keysyms1-dev doxygen graphviz python-clang libsdl2-dev

3. Build Ogre-Next from sources, using scripts.

• Save the file build_ogre_linux_c++latest.sh and put it inside our root folder, called here e.g. dev/

• Go into dev/ and start it:

cd dev/
chmod +x ./build_ogre_linux_c++latest.sh
./build_ogre_linux_c++latest.sh

• This should succeed after a longer while and build Ogre-Next with its dependencies.

• If so you can start and check Ogre demos and samples inside:
  dev/Ogre/ogre-next/build/Release/bin/

4. Go into dev/, clone this repo, and build:

git clone https://github.com/cryham/ogre3ter-demo.git demo
cd demo
mkdir build
cd build
cmake ../ -DCMAKE_BUILD_TYPE="Release"
make -j5
(or: ninja - if not using makefile)

My folder tree

dev/
    demo - this repo inside
    Ogre
        ogre-next - Ogre-Next build inside
        ogre-next-deps

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Windows

Tested on Windows 10.

Ogre-Next approach is different. It needs a Dependencies subdir inside this project.
So create a Dependencies dir after pulling this repo. Then you can just link to Ogre dir. So: create a symbolic link to Ogre dir, and put inside Dependencies.

Run CMake-Gui, pick this project path for sources, and the same with subir build\ for build output.
Press Configure.
There can be an error that I just fixed by copying that:
OgreBuildSettings.h (found some file inside Ogre, for Release build if many) into: Ogre\build\ogre-next\build\Release\include\

After that Configure has succeeded for me.
Pressing Generate creates sln file inside demo\build\.
Open it with Visual Studio (same version as chosen in CMake).
Try building.
For me it failed few times, and I fixed it by adding in VS paths that were wrong or missing.
(this isn't the best way, as you can't press Generate in CMake anymore, it would loose any editing in VS).

Open properties for TerrainDemo project.

My folder tree

dev/
    demo - this repo inside
    Dependencies
        Ogre  - this can be a symbolic link
            ogre-next - Ogre-Next build inside
                build
                    Release
                        include
                            OgreBuildSettings.h
            ogre-next-deps

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📂Sources

Some key locations in code are marked with //** also for crucial changes in code from OgreNext.

Materials are in Media/materials,
e.g. for: water, vegetation, terrain and (in simpler syntax) for cars

Used compositor workspaces are defined in: compositor file

📑Docs

Quick links for Ogre-Next documentation:

• Manual - need to read it when beginning.
• Compositor - for effects, RTTs, reflections, etc.
• HLMS doc - long read, explains all.
• HLMS shaders
• Terrain