### Install Ogre using vcpkg

Source: https://github.com/ogrecave/ogre/blob/master/BuildingOgre.md

This sequence of commands demonstrates how to install Ogre using the vcpkg dependency manager. It includes cloning vcpkg, bootstrapping, integrating, and finally installing Ogre.

```bash
git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
./bootstrap-vcpkg.sh
./vcpkg integrate install
vcpkg install ogre
```

--------------------------------

### Start OgreBites Application

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/setup.md

Create an instance of your application class and call the run method to start the Ogre rendering loop.

```cpp
int main()
{
    // NOTE: The sample object (MyGame) must be created on the heap,
    //       otherwise it will not be possible to call the destructor
    //       when the application exits.
    auto myGame = std::make_unique<MyGame>();
    myGame->initApp();

    // content of setup is next
    myGame->exec();
}
```

--------------------------------

### Install Plugin Headers

Source: https://github.com/ogrecave/ogre/blob/master/PlugIns/GLSLang/CMakeLists.txt

Installs the header files for the GLSLang plugin.

```cmake
install(FILES ${HEADER_FILES} DESTINATION include/OGRE/Plugins/GLSLang)
```

--------------------------------

### Install Ogre using Makefiles

Source: https://github.com/ogrecave/ogre/blob/master/BuildingOgre.md

For Makefile-based generators, use 'make install' to install Ogre. You may need root privileges depending on the installation location.

```bash
make install  # (or sudo make install, if root privileges are required)
```

--------------------------------

### Create WiX Installer for Demos

Source: https://github.com/ogrecave/ogre/blob/master/Samples/CMakeLists.txt

Generates a WiX installer for Ogre demos on Windows if WiX is found and samples are being built. It configures necessary files and creates a custom target for building the MSI package.

```cmake
if (MSVC AND OGRE_BUILD_SAMPLES)
  find_package(Wix)
  if (Wix_FOUND)
    # Create WiX setup for demo build
    configure_file(${OGRE_TEMPLATES_DIR}/demos.wxs.in ${CMAKE_CURRENT_BINARY_DIR}/demos.wxs @ONLY)
    configure_file(${OGRE_TEMPLATES_DIR}/demomedia.wxi.in ${CMAKE_CURRENT_BINARY_DIR}/demomedia.wxi @ONLY)
    configure_file(${OGRE_TEMPLATES_DIR}/DemoLicense.rtf ${CMAKE_CURRENT_BINARY_DIR}/DemoLicense.rtf COPYONLY)
	# Configure files, set media dir temporarily
	set(OGRE_MEDIA_DIR_TMP ${OGRE_MEDIA_DIR_REL})
	set(OGRE_MEDIA_DIR_REL "Media")
    configure_file(${OGRE_TEMPLATES_DIR}/resources.cfg.in ${CMAKE_CURRENT_BINARY_DIR}/resources.cfg @ONLY)
	# restore
	set(OGRE_MEDIA_DIR_REL ${OGRE_MEDIA_DIR_TMP})
    add_custom_target(demo_installer 
    COMMAND ${Wix_BINARY_DIR}/candle demos.wxs 
	  COMMAND ${Wix_BINARY_DIR}/light -ext WixUIExtension -cultures:en-us -out OgreDemos_v${OGRE_VERSION_DASH_SEPARATED}.msi demos.wixobj
      WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
      COMMENT "Building demo installer" VERBATIM
    )
	# Make sure we build samples first
	add_dependencies(demo_installer SampleBrowser)
  endif()
endif()
```

--------------------------------

### Install Header Files for OgreDotScenePlugin

Source: https://github.com/ogrecave/ogre/blob/master/PlugIns/DotScene/CMakeLists.txt

This command installs the header files collected earlier into the 'include/OGRE/Plugins/DotScene' directory of the installation prefix. This ensures that users can include the plugin's headers when using it in their projects.

```cmake
install(FILES ${HEADER_FILES} DESTINATION include/OGRE/Plugins/DotScene)
```

--------------------------------

### OGRE Script Format Example

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/scripts.md

This example demonstrates the basic structure of an OGRE script, including comments, object definitions, attributes, and nested objects. Ensure object names are globally unique.

```cpp
// This is a comment
object_keyword Example/ObjectName
{
    attribute_name "some value"

    object_keyword2 "Nested Object"
    {
        other_attribute 1 2 3
        // and so on..
    }
}
```

--------------------------------

### Install Ogre using CMake

Source: https://github.com/ogrecave/ogre/blob/master/BuildingOgre.md

After building, use this command to install Ogre to the specified CMAKE_INSTALL_PREFIX. This is necessary for referencing Ogre in other projects with CMake.

```bash
cmake --build . --config Release --target install
```

--------------------------------

### Create Scene with OgreBites

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/setup.md

Implement the setup method to create the scene, including loading resources and setting up the scene manager.

```cpp
void MyGame::setup()
{
    // do something before initApp
    ApplicationContext::initApp();

    // create the scene
    Ogre::SceneManager* sceneManager = mRoot->createSceneManager();

    // register our custom scene
    Ogre::RTShader::ShaderGenerator::getSingletonPtr()->addSceneManager(sceneManager);

    // next we will be introducing the camera
    Ogre::Camera* camera = sceneManager->createCamera("myCamera");
    camera->setNearClipDistance(10);
    camera->setAutoAspectRatio(true);

    Ogre::SceneNode* camNode = sceneManager->getRootSceneNode()->createChildSceneNode();
    camNode->attachObject(camera);

    // also need to tell where the sample media will be
    mRoot->getRenderSystem()->getConfigurationManager()->setMediaDirectory("../media");
}
```

--------------------------------

### Initialize the Ogre Profiler

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/profiler.md

Enable the profiler singleton at the start of your application. This sets up the necessary media for profiling.

```cpp
 Ogre::Profiler::getSingleton().setEnabled(true);
```

--------------------------------

### Camera Information Setup

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/basictutorials/basictutorial3.md

Sets up camera information, likely for rendering or scene management purposes.

```cpp
// Setup camera info
    cam->setFrustumOffset(0.0f);
    cam->setWindow);
    cam->setProjectionType(PT_PERSPECTIVE);
    cam->setFOVy(Degree(75));
    cam->setAspectRatio(Real(vp->getActualWidth()) / Real(vp->getActualHeight()));
```

--------------------------------

### GLSL Shader Example

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/high-level-programs.md

A basic GLSL vertex shader example.

```cpp
#version 120
uniform mat4 worldMatrix;

attribute vec4 vertex;
void main()
{
    gl_Position = worldMatrix * vertex;
}
```

--------------------------------

### Install Overlay Component

Source: https://github.com/ogrecave/ogre/blob/master/Components/Overlay/CMakeLists.txt

Installs the OgreOverlay component, including its header files and a profiler zip file, to the appropriate destinations within the OGRE installation directory.

```cmake
# install 
ogre_config_framework(OgreOverlay)
ogre_config_component(OgreOverlay)

install(FILES ${HEADER_FILES}
  DESTINATION include/OGRE/Overlay
)
install(FILES "${PROJECT_SOURCE_DIR}/Media/packs/profiler.zip"
  DESTINATION "${OGRE_MEDIA_PATH}/packs/"
)
```

--------------------------------

### Setup OgreOverlay Target

Source: https://github.com/ogrecave/ogre/blob/master/Components/Overlay/CMakeLists.txt

Configures the OgreOverlay target library, linking it with OgreMain and setting include directories for build and installation. It also conditionally links FreeType libraries and includes directories if FreeType is found.

```cmake
# setup target
add_library(OgreOverlay ${OGRE_COMP_LIB_TYPE} ${HEADER_FILES} ${SOURCE_FILES})
set_target_properties(OgreOverlay PROPERTIES VERSION ${OGRE_SOVERSION} SOVERSION ${OGRE_SOVERSION})
target_link_libraries(OgreOverlay PUBLIC OgreMain)
target_include_directories(OgreOverlay PUBLIC 
  "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>"
  $<INSTALL_INTERFACE:include/OGRE/Overlay>)

if(FREETYPE_FOUND)
  target_compile_definitions(OgreOverlay PRIVATE HAVE_FREETYPE)
  target_link_libraries(OgreOverlay PRIVATE ${FREETYPE_LIBRARIES})
  target_include_directories(OgreOverlay PRIVATE ${FREETYPE_INCLUDE_DIRS})
  if(ZLIB_FOUND)
    target_link_libraries(OgreOverlay PRIVATE ZLIB::ZLIB)
  endif()
elseif(UNIX)
  set_source_files_properties(src/OgreFont.cpp PROPERTIES
    COMPILE_FLAGS "-Wno-cast-qual -Wno-unused-function")
endif()
```

--------------------------------

### Install OgreBullet Header Files

Source: https://github.com/ogrecave/ogre/blob/master/Components/Bullet/CMakeLists.txt

Installs the header files for the OgreBullet component to the appropriate destination directory.

```cmake
install(FILES ${HEADER_FILES} DESTINATION include/OGRE/Bullet)
```

--------------------------------

### Install Ubuntu Dependencies for OGRE

Source: https://github.com/ogrecave/ogre/blob/master/BuildingOgre.md

Installs necessary system headers and libraries for building OGRE on Ubuntu, including optional dependencies for Wayland, input handling, and documentation generation.

```bash
sudo apt-get install libgles2-mesa-dev libvulkan-dev glslang-dev
# with OGRE_USE_WAYLAND=OFF
sudo apt-get install libxrandr-dev
# with OGRE_USE_WAYLAND=ON
sudo apt-get install libwayland-dev libwayland-egl1 libegl-dev

# Optional dependencies
sudo apt-get install libsdl2-dev doxygen
```

--------------------------------

### Deferred Shading Example

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/deferred.md

This snippet demonstrates the integration of deferred shading logic within the Ogre framework.

```cpp
#include <OgreSceneManager.h>

void DeferredShading::execute(Ogre::SceneManager* sm, Ogre::SceneManager::LightList* lightList) {
    sm->prepareShadowTextures(lightList);
}

```

--------------------------------

### Basic DotScene XML Structure

Source: https://github.com/ogrecave/ogre/blob/master/PlugIns/DotScene/README.md

A simple example of a .scene file defining nodes, positions, scales, entities, and lights.

```xml
<scene formatVersion="1.1">
    <nodes>
        <node name="Robot" id="3">
            <position x="10.0" y="5" z="10.5" />
            <scale x="1" y="1" z="1" />
            <entity name="Robot" meshFile="robot.mesh"/>
        </node>
        <node name="Omni01" id="5">
            <position x="-23" y="49" z="18" />
            <rotation qx="0" qy="0" qz="0" qw="1" />
            <scale x="1" y="1" z="1" />
            <light name="Omni01" type="point">
                <colourDiffuse r="0.4" g="0.4" b="0.5" />
                <colourSpecular r="0.5" g="0.5" b="0.5" />
            </light>
        </node>
    </nodes>
</scene>
```

--------------------------------

### Install OgreMain Library and Headers with CMake

Source: https://github.com/ogrecave/ogre/blob/master/OgreMain/CMakeLists.txt

Installs the OgreMain library and its associated header files to the appropriate destinations. This is typically used in the build process to make the library available for use.

```cmake
ogre_config_lib(OgreMain TRUE)
install(FILES ${HEADER_FILES}
  DESTINATION include/OGRE
)
install(FILES ${PLATFORM_HEADERS}
  DESTINATION include/OGRE/${PLATFORM_HEADER_INSTALL}
)
install(FILES ${THREAD_HEADER_FILES}
	DESTINATION include/OGRE/Threading
)
```

--------------------------------

### Enable LiSPSM Shadow Camera Setup

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/ogre-shadows.md

Applies the Light Space Perspective Shadow Mapping (LiSPSM) algorithm to the scene's shadow camera setup. This is a global setting for the SceneManager.

```cpp
mSceneMgr->setShadowCameraSetup(Ogre::LiSPSMShadowCameraSetup::create());
```

--------------------------------

### HW Basic Vertex Shader Input

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/instancing.md

Example of vertex shader input for HW Basic instancing, including the world matrix.

```cpp
	... 
	float3x4 worldMatrix : TEXCOORD1,
	...
```

--------------------------------

### DotScene XML for Instanced Entities

Source: https://github.com/ogrecave/ogre/blob/master/PlugIns/DotScene/README.md

Example of an entity definition in a .scene file that specifies it should be managed by an Instance Manager.

```xml
<entity meshFile="Cube.mesh" name="Cube" instanced="Foliage" />
```

--------------------------------

### Material Definition With Unified Programs

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/high-level-programs.md

This example demonstrates using unified program definitions to support multiple languages (HLSL and GLSL) within a single material definition, reducing redundancy.

```cpp
vertex_program myVertexProgramHLSL hlsl
{
    source prog.hlsl
    entry_point main_vp
    target vs_2_0
}
fragment_program myFragmentProgramHLSL hlsl
{
    source prog.hlsl
    entry_point main_fp
    target ps_2_0
}
vertex_program myVertexProgramGLSL glsl
{
    source prog.vert
}
fragment_program myFragmentProgramGLSL glsl
{
    source prog.frag
    default_params
    {
        param_named tex int 0
    }
}
// Unified definition
vertex_program myVertexProgram unified
{
    delegate myVertexProgramGLSL
    delegate myVertexProgramHLSL
}
fragment_program myFragmentProgram unified
{
    delegate myFragmentProgramGLSL
    delegate myFragmentProgramHLSL
}
material SupportHLSLandGLSLwithUnified
{
    // HLSL technique
    technique
    {
        pass
        {
            vertex_program_ref myVertexProgram
            {
                param_named_auto worldViewProj worldviewproj_matrix
                param_named_auto lightColour light_diffuse_colour 0
                param_named_auto lightSpecular light_specular_colour 0
                param_named_auto lightAtten light_attenuation 0
            }
            fragment_program_ref myFragmentProgram
            {
            }
        }
    }
}
```

--------------------------------

### Material Definition Without Unified Programs

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/high-level-programs.md

This example shows how to define a programmable material supporting both HLSL and GLSL by duplicating techniques for each language. This can lead to bloated material definitions.

```cpp
vertex_program myVertexProgramHLSL hlsl
{
    source prog.hlsl
    entry_point main_vp
    target vs_2_0
}
fragment_program myFragmentProgramHLSL hlsl
{
    source prog.hlsl
    entry_point main_fp
    target ps_2_0
}
vertex_program myVertexProgramGLSL glsl
{
    source prog.vert
}
fragment_program myFragmentProgramGLSL glsl
{
    source prog.frag
    default_params
    {
        param_named tex int 0
    }
}
material SupportHLSLandGLSLwithoutUnified
{
    // HLSL technique
    technique
    {
        pass
        {
            vertex_program_ref myVertexProgramHLSL
            {
                param_named_auto worldViewProj worldviewproj_matrix
                param_named_auto lightColour light_diffuse_colour 0
                param_named_auto lightSpecular light_specular_colour 0
                param_named_auto lightAtten light_attenuation 0
            }
            fragment_program_ref myFragmentProgramHLSL
            {
            }
        }
    }
    // GLSL technique
    technique
    {
        pass
        {
            vertex_program_ref myVertexProgramGLSL
            {
                param_named_auto worldViewProj worldviewproj_matrix
                param_named_auto lightColour light_diffuse_colour 0
                param_named_auto lightSpecular light_specular_colour 0
                param_named_auto lightAtten light_attenuation 0
            }
            fragment_program_ref myFragmentProgramGLSL
            {
            }
        }
    }
}
```

--------------------------------

### Shader Script Equivalent for Programmatic Creation

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/high-level-programs.md

This is the shader script syntax that the programmatic C++ example replicates. It defines a vertex program with specific source, preprocessor defines, and automatic parameters.

```cpp
vertex_program glTF2/PBR_vs glsl
{
	source pbr-vert.glsl
    preprocessor_defines HAS_NORMALS,HAS_TANGENTS
    default_params
    {
        param_named_auto u_MVPMatrix worldviewproj_matrix
    }
}
```

--------------------------------

### Initialize OgreBites Application Context

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/setup.md

Set up the application name and initialize Ogre components and the window using OgreBites::ApplicationContext.

```cpp
class MyGame : public OgreBites::ApplicationContext
{
public:
    MyGame() : ApplicationContext("MyGame") {}

    void setup() override;
};

void MyGame::setup()
{
    // do something before initApp
    ApplicationContext::initApp();
    // do something after initApp
}
```

--------------------------------

### Get Custom Translator Instance

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/scripts.md

Implement the getTranslator function to return an instance of your custom translator. This example reuses a single instance for efficiency.

```cpp
#define font_get_translator
Ogre::ScriptTranslator* FontTranslatorManager::getTranslator(const Ogre::String& type)
{
    if (type == "font")
    {
        return &mFontTranslator;
    }
    return 0;
}
```

--------------------------------

### Compile Ogre Java Sample

Source: https://github.com/ogrecave/ogre/blob/master/Samples/Java/README.md

Use this command to compile the Example.java file. Ensure Ogre-*.jar is in your classpath.

```bash
javac Example.java -classpath Ogre-*.jar
```

--------------------------------

### Run Ogre Java Sample

Source: https://github.com/ogrecave/ogre/blob/master/Samples/Java/README.md

Execute the compiled Java sample. The -Djava.library.path argument is crucial for loading native libraries.

```bash
java -classpath .:Ogre-1.12.12.jar -Djava.library.path=. Example
```

--------------------------------

### Install TestContext on Windows

Source: https://github.com/ogrecave/ogre/blob/master/Tests/VisualTests/Context/CMakeLists.txt

Ensures TestContext is installed when building on Windows, as it cannot be run directly from the build directory.

```cmake
if (WIN32)
    ogre_install_target(TestContext "" FALSE)
endif()
```

--------------------------------

### Set Up Camera for Terrain Tutorial

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/basictutorials/basictutorial3.md

Configures the camera, including setting the far clip distance to zero for no far clipping.

```cpp
void setupContent(SceneManager* sm, SceneManager* sm2, Light* light)
{
    // Setup the camera
    Camera* cam = sm->createCamera("Cam1");
    cam->setPosition(Vector3(0, 1000, 0));
    cam->lookAt(Vector3(0, 0, 0));
    cam->setNearClipDistance(1);
    cam->setFarClipDistance(0); // No far clipping

    // Setup the second camera
    Camera* cam2 = sm2->createCamera("Cam2");
    cam2->setPosition(Vector3(0, 1000, 0));
    cam2->lookAt(Vector3(0, 0, 0));
    cam2->setNearClipDistance(1);
    cam2->setFarClipDistance(0); // No far clipping
}
```

--------------------------------

### Initialize OverlaySystem with OgreBites

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/manual.md

If using OgreBites, fetch the pre-existing OverlaySystem from the application context and add it as a render queue listener to the SceneManager.

```cpp
Ogre::OverlaySystem* pOverlaySystem = myApplicationContext.getOverlaySystem();
mSceneMgr->addRenderQueueListener(pOverlaySystem);
```

--------------------------------

### Instantiate Elements Using Templates

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/scripts.md

Demonstrates creating a panel and buttons within an overlay, inheriting properties from defined templates.

```cpp
overlay MyOverlays/AnotherOverlay
{
    zorder 490
    overlay_element MyElements/BackPanel BorderPanel : MyTemplates/BasicBorderPanel
    {
        left 0
        top 0
        width 1
        height 1

        overlay_element MyElements/HostButton Button : MyTemplates/BasicButton
        {
            left 0.82
            top 0.45
            caption MyTemplates/BasicText HOST
        }

        overlay_element MyElements/JoinButton Button : MyTemplates/BasicButton
        {
            left 0.82
            top 0.60
            caption MyTemplates/BasicText JOIN
        }
    }
}
```

--------------------------------

### Install Fedora Dependencies for OGRE

Source: https://github.com/ogrecave/ogre/blob/master/BuildingOgre.md

Installs required system headers and libraries for building OGRE on Fedora, including optional dependencies for Wayland, input handling, and documentation generation.

```bash
sudo dnf install mesa-libGL-devel mesa-libEGL-devel mesa-vulkan-devel glslang-devel
# with OGRE_USE_WAYLAND=OFF
sudo dnf install libXrandr-devel
# with OGRE_USE_WAYLAND=ON
sudo dnf install pkgconfig wayland-devel egl-wayland

# Optional dependencies
sudo dnf install SDL2-devel doxygen
```

--------------------------------

### Create Instance Manager with HW VTF LUT Flags

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/instancing.md

Demonstrates creating an Instance Manager with flags for HW Instancing VTF and Bone Matrix LookUp Table, suitable for animating large crowds.

```cpp
mSceneMgr->createInstanceManager("InstanceMgr","MyMesh.mesh",
			ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME,
			InstanceManager::HWInstancingVTF,
			numInstancesPerBatch,IM_USEALL|IM_VTFBONEMATRIXLOOKUP );
```

--------------------------------

### Initialize Ogre Application Context

Source: https://github.com/ogrecave/ogre/blob/master/Samples/Python/numpy_sample.ipynb

Sets up the Ogre application context and initializes the rendering subsystem. This is necessary for environments without a direct display, requiring an offscreen render target.

```python
!pip install ogre-python

import matplotlib.pyplot as plt
import numpy as np

import Ogre
import Ogre.Bites
import Ogre.RTShader

class Application(Ogre.Bites.ApplicationContextBase):
    def __init__(self):
        Ogre.Bites.ApplicationContextBase.__init__(self, "OgreColab")

    def oneTimeConfig(self):
        rs = self.getRoot().getRenderSystemByName("OpenGL 3+ Rendering Subsystem")
        self.getRoot().setRenderSystem(rs)
        return True

    def pollEvents(self):
        pass


ctx = Application()
ctx.initApp()
root = ctx.getRoot()

scn_mgr = root.createSceneManager()

shadergen = Ogre.RTShader.ShaderGenerator.getSingleton()
shadergen.addSceneManager(scn_mgr)

# no RenderWindows are available here, so create an offscreen rendertarget and use that
w, h = 640, 480
tex = Ogre.TextureManager.getSingleton().createManual(
    "target", Ogre.RGN_DEFAULT, Ogre.TEX_TYPE_2D, w, h, 0, Ogre.PF_BYTE_RGB,
    Ogre.TU_RENDERTARGET, None)
win = tex.getBuffer().getRenderTarget()

```

--------------------------------

### Set Install Path for macOS Plugins

Source: https://github.com/ogrecave/ogre/blob/master/Tests/VisualTests/VTests/CMakeLists.txt

Configures the installation path for the VTests library on macOS to ensure that plugins are correctly located within the application bundle. This is specific to Apple platforms and not iOS.

```cmake
if (APPLE AND NOT APPLE_IOS)
    # Set the INSTALL_PATH so that Samples can be installed in the application package
    set_target_properties(VTests
       PROPERTIES BUILD_WITH_INSTALL_RPATH 1
       INSTALL_NAME_DIR "@executable_path/../Plugins"
    )
endif()
```

--------------------------------

### Copy SDK and Create Android Project

Source: https://github.com/ogrecave/ogre/blob/master/Samples/AndroidJNI/CMakeLists.txt

Uses a custom command to copy the SDK directory before building the dummy JNI library and then calls `create_android_proj` to finalize the Android project setup.

```cmake
add_custom_command(TARGET OgreJNIDummy PRE_BUILD
    COMMAND ${CMAKE_COMMAND} -E copy_directory "${PROJECT_BINARY_DIR}/java" "${NDKOUT}")

create_android_proj(OgreJNIDummy)
```

--------------------------------

### Task-Based WorkQueue API Example

Source: https://github.com/ogrecave/ogre/blob/master/Docs/14-Notes.md

The WorkQueue API has transitioned from a request/response model to a task-based model. This example demonstrates sending work as a callback, eliminating the need for explicit request/response handlers and the WorkQueue-channel concept.

```cpp
Root::getSingleton().getWorkQueue()->addRequest(mWorkQueueChannel, WORKQUEUE_DERIVED_DATA_REQUEST, data);
```

```cpp
Root::getSingleton().getWorkQueue()->addTask(
    [this, req]()
    {
        auto req = new WorkQueue::Request(0, 0, data, 0, 0);
        auto res = handleRequest(r, NULL);
        Root::getSingleton().getWorkQueue()->addMainThreadTask([this, res]() {
            handleResponse(res, NULL);
            delete res;
        });
    });
```

--------------------------------

### Run C# Sample with Mono

Source: https://github.com/ogrecave/ogre/blob/master/Samples/Csharp/README.md

Execute a compiled C# sample using the Mono runtime on Linux.

```bash
mono example.exe
```

--------------------------------

### Instantiate Dummy Profiler for Release Builds

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/profiler.md

Creates a dummy profiler instance and enables it for use in release builds when OGRE_PROFILING is OFF. This allows manual use of beginProfile() and endProfile() but disables the OgreProfile macros.

```cpp
// Create dummy profile to set singleton pointer
new Ogre::Profiler();

// Give it a timer and enable it
Ogre::Profiler::getSingleton().setTimer(Root::getSingleton().getTimer());
Ogre::Profiler::getSingleton().setEnabled(true);
```

--------------------------------

### Programmatic GPU Program Creation

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/high-level-programs.md

This example demonstrates how to create a vertex program programmatically using the Ogre API, mirroring the functionality of a shader script definition. It shows setting the source, preprocessor defines, and auto-updating parameters.

```cpp
using namespace Ogre;
GpuProgramManager& mgr = GpuProgramManager::getSingleton();

GpuProgramPtr vertex_program = mgr.createProgram("glTF2/PBR_vs", RGN_DEFAULT, "glsl", GPT_VERTEX_PROGRAM);
vertex_program->setSource("pbr-vert.glsl");
vertex_program->setParameter("preprocessor_defines", "HAS_NORMALS,HAS_TANGENTS");

GpuProgramParametersPtr params = vertex_program->getDefaultParameters();
params->setNamedAutoConstant("u_MVPMatrix", GpuProgramParameters::ACT_WORLDVIEWPROJ_MATRIX);
```

--------------------------------

### Add Android JNI Binding Example

Source: https://github.com/ogrecave/ogre/blob/master/Samples/CMakeLists.txt

Conditionally adds the Android JNI sample subdirectory if OGRE_BUILD_ANDROID_JNI_SAMPLE is enabled.

```cmake
if(OGRE_BUILD_ANDROID_JNI_SAMPLE)
  add_subdirectory(AndroidJNI)
endif()
```

--------------------------------

### Configure and Generate LOD Levels

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/meshlod.md

Programmatically configure LOD generation using LodConfig. This example demonstrates setting up proportional reduction based on distance and adding manually created LOD levels. Ensure background queue is enabled for threaded generation.

```cpp
Ogre::LodConfig config(mesh);
config.createGeneratedLodLevel(5, 0.5); // At 5 ogre worldspace units use 50% reduced mesh
config.createGeneratedLodLevel(10, 0.75); // By default, it is using DistanceLodStrategy and proportional reduction.
config.createManualLodLevel(15, "mesh_LOD3.mesh"); // Manual level created in blender, maya or 3ds max.
config.advanced.useBackgroundQueue = true; // Generate in background thread, later inject with framelistener.
Ogre::MeshLodGenerator::getSingleton().generateLodLevels(config);

// Or you can use autoconfigured LOD:
Ogre::MeshLodGenerator::getSingleton().generateAutoconfiguredLodLevels(mesh);
```

--------------------------------

### Material Definition for Uber Shader

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/high-level-programs.md

Example of instantiating an uber shader in a material file using preprocessor defines.

```material
vertex_program TextureAndSkinning glsl
{
    source UberShader_vp.glsl
    preprocessor_defines USE_UV,USE_SKINNING
    default_params
    {
        ...
    }
}
```

--------------------------------

### Instantiate Particle System from Script

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/particle-scripts.md

Demonstrates how to create a particle system instance from a script template using Ogre::SceneManager. The method takes the name for the new system and the name of the template defined in the script.

```cpp
Ogre::ParticleSystem* ps = mSceneMgr->createParticleSystem("MyParticleSystem", "Examples/Manual/Smoke");
```

--------------------------------

### Set Global Volume Material

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/volume.md

Sets the global material for the volume chunk, for example, using a 'triplanarReference' material.

```cpp
volumeRoot->setMaterial("triplanarReference");
```

--------------------------------

### Define and Load Terrains

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/basictutorials/basictutorial3.md

Iterates through terrain definitions and asks the TerrainGroup to load them. This example uses a single terrain.

```cpp
mTerrainGroup->defineTerrain(0, 0, 0.0f, 0.0f, "Terrain", "", false);

    // Set up the blend maps
    for (int i = 0; i < mTerrainGroup->getTerrainCount(); ++i)
    {
        Terrain* terrain = mTerrainGroup->getTerrain(i % mTerrainGroup->getTerrainSize(), i / mTerrainGroup->getTerrainSize());
        initBlendMaps(terrain);
    }
```

--------------------------------

### DotScene XML for Static Geometry

Source: https://github.com/ogrecave/ogre/blob/master/PlugIns/DotScene/README.md

Example of an entity definition in a .scene file that specifies it should be part of a static geometry group.

```xml
<entity meshFile="Cube.mesh" name="Cube" static="Foliage" />
```

--------------------------------

### Create TrayManager Instance

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/trays.md

Instantiate a TrayManager, providing a unique name for the interface and the Ogre::RenderWindow. Optionally, a TrayListener can be provided for event notifications. Remember to load 'Trays.zip' and initialize the Overlays component beforehand.

```cpp
OgreBites::TrayManager* mTrayMgr = new OgreBites::TrayManager("InterfaceName", mWindow);
```

--------------------------------

### Initialize OverlaySystem

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/manual.md

Manually initialize the OverlaySystem by creating an instance and adding it as a render queue listener to the SceneManager. This is required for overlays to function.

```cpp
Ogre::OverlaySystem* pOverlaySystem = new Ogre::OverlaySystem();
mSceneMgr->addRenderQueueListener(pOverlaySystem);
```

--------------------------------

### Set pass to iterate once per light type

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/material-scripts.md

The pass is executed once for each specified light type. For example, 'point' lights.

```materialscript
iteration once_per_light point
```

--------------------------------

### Create a Spotlight

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/basictutorials/basictutorial2.md

Use Ogre::SceneManager::createLight to add a spotlight to the scene. This is typically done after creating other scene elements.

```cpp
Ogre::Light* light = mSceneMgr->createLight("SpotLight");
```

--------------------------------

### Spacing Around Operators

Source: https://github.com/ogrecave/ogre/blob/master/Docs/CodingStandards.md

Insert spaces around operators for better readability. For example, use 'x + y' instead of 'x+y'.

```cpp
int result = x + y;
```

--------------------------------

### Using Instance Manager with DotScene in Ogre C++

Source: https://github.com/ogrecave/ogre/blob/master/PlugIns/DotScene/README.md

Code demonstrating the creation of an InstanceManager and loading a scene that uses instanced entities.

```cpp
// Create the InstanceManager
Ogre::InstanceManager* im = mSceneMgr->createInstanceManager("Foliage", "Cube.mesh", "MyGroup", Ogre::InstanceManager::ShaderBased, 80, Ogre::IM_USEALL);

attachmentNode->loadChildren("myScene.scene");
```

--------------------------------

### Configure Test Environment

Source: https://github.com/ogrecave/ogre/blob/master/Tests/CMakeLists.txt

Sets up the test environment by creating necessary directories and linking framework resources. This is typically used during the build process to prepare the testing infrastructure.

```cmake
add_custom_command(TARGET Test_Ogre POST_BUILD
  COMMAND mkdir ARGS -p ${OGRE_TEST_CONTENTS_PATH}/Plugins)

  set(FRAMEWORKS OgreOverlay
    OgreBites
    OgrePaging
    OgreProperty
    OgreRTShaderSystem
    OgreTerrain
    OgreVolume
    OgreMeshLodGenerator
    Plugin_BSPSceneManager
    Plugin_CgProgramManager
    Plugin_OctreeSceneManager
    Plugin_OctreeZone
    Plugin_ParticleFX
    Plugin_PCZSceneManager
    Plugin_DotScene
    Codec_STBI
    Codec_FreeImage
    RenderSystem_GL
    RenderSystem_GL3Plus
    RenderSystem_Metal
  )

  foreach(FWK ${FRAMEWORKS})
    add_custom_command(TARGET Test_Ogre POST_BUILD
      COMMAND ARGS if [ -d ${PROJECT_BINARY_DIR}/lib/${OGRE_BUILT_FRAMEWORK}/${FWK}.framework ]\; then ln -s -f ${PROJECT_BINARY_DIR}/lib/${OGRE_BUILT_FRAMEWORK}/${FWK}.framework ${OGRE_TEST_CONTENTS_PATH}/Frameworks/${FWK}.framework\; fi
    )
  endforeach()
endif (OGRE_BUILD_TESTS)
```

--------------------------------

### Adding User Data to Entities in DotScene

Source: https://github.com/ogrecave/ogre/blob/master/PlugIns/DotScene/README.md

Example of how to attach custom user data properties to an entity within a .scene file.

```xml
<entity meshFile="Cube.mesh" name="Cube" >
    <userData>
        <property data="1.0" name="mass" type="float" />
        <property data="1.0" name="mass_radius" type="float" />
    </userData>
</entity>
```

--------------------------------

### VTF Instancing Texture Unit Setup

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/instancing.md

Configuration for the texture unit used in VTF (Software) instancing. Filtering is set to none.

```plaintext
texture_unit InstancingVTF
{
	filtering none
}
```

--------------------------------

### Python: Rapid Prototyping with HighPy

Source: https://github.com/ogrecave/ogre/blob/master/README.md

Use this snippet to quickly set up a PBR scene with OGRE using its Python bindings. Ensure you have installed the 'ogre-python' package. The loop exits when the ESC key is pressed.

```python
# pip install ogre-python
import Ogre.HighPy as ohi

# Create a window
ohi.window_create("Ogre", window_size=(1280, 720))

# Load a mesh (glTF 2.0, OBJ, or Ogre Mesh)
ohi.mesh_show("Ogre", "DamagedHelmet.glb", position=(0, 0, -3))
ohi.point_light("Ogre", position=(0, 10, 0))
# Main Loop
while ohi.window_draw("Ogre") != 27: # Press ESC to exit
    pass

```

--------------------------------

### Generate Ogre API Documentation

Source: https://github.com/ogrecave/ogre/blob/master/BuildingOgre.md

If doxygen is installed and detected by CMake, this command can be used to generate the API documentation. This is an optional build target.

```bash
make OgreDoc
```

--------------------------------

### Set Entity Scale

Source: https://github.com/ogrecave/ogre/blob/master/Docs/src/tutorials/basictutorials/basictutorial1.md

Scales an entity by providing a scale factor for each dimension. This example adds a new Ogre head with a different scale.

```cpp
@snippet Samples/Tutorials/BasicTutorial1.cpp entity3
```

--------------------------------

### Link Sample Libraries for Static Builds

Source: https://github.com/ogrecave/ogre/blob/master/Samples/Browser/CMakeLists.txt

Conditionally links all OGRE sample libraries when building a static SampleBrowser.

```cmake
if (OGRE_STATIC)
	# Link to samples too
	target_link_libraries(SampleBrowser ${OGRE_SAMPLES_LIST})
endif()
```

--------------------------------

### Configure XAW Library for Linux

Source: https://github.com/ogrecave/ogre/blob/master/Components/Bites/CMakeLists.txt

Appends C++ source files and dependencies for the XAW library on Linux, excluding Wayland, and installs a resource file.

```cmake
list(APPEND SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/src/OgreGLXConfigDialog.cpp")
  list(APPEND DEPENDENCIES ${X11_Xt_LIB} ${XAW_LIBRARY})
  install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/misc/GLX_backdrop.png" DESTINATION "${OGRE_MEDIA_PATH}/../")
```

--------------------------------

### Configure OgreBullet Library

Source: https://github.com/ogrecave/ogre/blob/master/Components/Bullet/CMakeLists.txt

Defines the OgreBullet library, links necessary components like OgreMain and OgreTerrain, and sets up include directories for build and installation.

```cmake
set(HEADER_FILES
  include/OgreBullet.h
  ${PROJECT_BINARY_DIR}/include/OgreBulletExports.h)

add_library(OgreBullet ${OGRE_COMP_LIB_TYPE} ${HEADER_FILES} src/OgreBullet.cpp)
if (OGRE_BUILD_COMPONENT_TERRAIN)
  target_link_libraries(OgreBullet PUBLIC OgreTerrain)
endif()
target_link_libraries(OgreBullet PUBLIC OgreMain)
target_include_directories(OgreBullet PUBLIC
  "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>"
  $<INSTALL_INTERFACE:include/OGRE/Bullet>)
target_include_directories(OgreBullet SYSTEM PUBLIC "$<BUILD_INTERFACE:${BULLET_INCLUDE_DIRS}>")

if(OGRE_BUILD_DEPENDENCIES)
  target_include_directories(OgreBullet PUBLIC "$<INSTALL_INTERFACE:include/bullet>")
  target_link_libraries(OgreBullet PUBLIC "$<BUILD_INTERFACE:${BULLET_LIBRARIES}>")
else()
  target_link_libraries(OgreBullet PUBLIC ${BULLET_LIBRARIES})
endif()
```