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89 lines
3.3 KiB
Markdown
89 lines
3.3 KiB
Markdown
IrrlichtMt version 1.9
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======================
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IrrlichtMt is the 3D engine of [Minetest](https://github.com/minetest).
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It is based on the [Irrlicht Engine](https://irrlicht.sourceforge.io/) but is now developed independently.
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It is intentionally not compatible to upstream and is planned to be eventually absorbed into Minetest.
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Build
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-----
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The build system is CMake.
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The following libraries are required to be installed:
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* zlib, libPNG, libJPEG
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* OpenGL
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* or on mobile: OpenGL ES (can be optionally enabled on desktop too)
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* on Unix: X11
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* SDL2 (see below)
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Aside from standard search options (`ZLIB_INCLUDE_DIR`, `ZLIB_LIBRARY`, ...) the following options are available:
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* `BUILD_SHARED_LIBS` (default: `ON`) - Build IrrlichtMt as a shared library
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* `BUILD_EXAMPLES` (default: `OFF`) - Build example applications
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* `ENABLE_OPENGL` - Enable OpenGL driver
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* `ENABLE_OPENGL3` (default: `OFF`) - Enable OpenGL 3+ driver
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* `ENABLE_GLES1` - Enable OpenGL ES driver, legacy
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* `ENABLE_GLES2` - Enable OpenGL ES 2+ driver
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* `USE_SDL2` (default: platform-dependent, usually `ON`) - Use SDL2 instead of older native device code
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e.g. on a Linux system you might want to build for local use like this:
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git clone https://github.com/minetest/irrlicht
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cd irrlicht
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cmake . -DBUILD_SHARED_LIBS=OFF
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make -j$(nproc)
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This will put an IrrlichtMtTargets.cmake file into the cmake directory in the current build directory, and it can then be imported from another project by pointing `find_package()` to the build directory, or by setting the `CMAKE_PREFIX_PATH` variable to that same path.
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on Windows system:
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It is highly recommended to use vcpkg as package manager.
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After you successfully built vcpkg you can easily install the required libraries:
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vcpkg install zlib libjpeg-turbo libpng sdl2 --triplet x64-windows
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Run the following script in PowerShell:
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git clone https://github.com/minetest/irrlicht
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cd irrlicht
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cmake -B build -G "Visual Studio 17 2022" -A "Win64" -DCMAKE_TOOLCHAIN_FILE=[vcpkg-root]/scripts/buildsystems/vcpkg.cmake -DBUILD_SHARED_LIBS=OFF
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cmake --build build --config Release
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Platforms
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---------
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We aim to support these platforms:
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* Windows via MinGW
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* Linux (GL or GLES)
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* macOS
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* Android
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This doesn't mean other platforms don't work or won't be supported, if you find something that doesn't work contributions are welcome.
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License
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-------
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The license of the Irrlicht Engine is based on the zlib/libpng license and applies to this fork, too.
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The Irrlicht Engine License
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===========================
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Copyright (C) 2002-2012 Nikolaus Gebhardt
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgement in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be clearly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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