first commit

2022-10-20 20:29:11 +08:00
commit 4d531f8044
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+# Dependencies
+find_package(OpenGL REQUIRED)
+find_package(OpenSceneGraph REQUIRED COMPONENTS osgViewer osgUtil)
+find_package(OpenXR REQUIRED)
+
+# Old OpenXR SDK versions don't find Threads but Threads::Threads is an
+# INTERFACE link library of openxr_loader, so do so explicitly
+if(OpenXR_VERSION VERSION_LESS 1.0.14)
+    find_package(Threads REQUIRED)
+endif()
+
+# Public header files
+set(osgXR_HEADERS
+    include/osgXR/Action
+    include/osgXR/ActionSet
+    include/osgXR/CompositionLayer
+    include/osgXR/CompositionLayerQuad
+    include/osgXR/Export
+    include/osgXR/InteractionProfile
+    include/osgXR/Manager
+    include/osgXR/Mirror
+    include/osgXR/MirrorSettings
+    include/osgXR/OpenXRDisplay
+    include/osgXR/Settings
+    include/osgXR/SubImage
+    include/osgXR/Subaction
+    include/osgXR/Swapchain
+    include/osgXR/View
+    include/osgXR/osgXR
+)
+
+# Source files
+set(osgXR_SRCS
+    OpenXR/Action.cpp
+    OpenXR/ActionSet.cpp
+    OpenXR/Compositor.cpp
+    OpenXR/EventHandler.cpp
+    OpenXR/GraphicsBinding.cpp
+    OpenXR/Instance.cpp
+    OpenXR/InteractionProfile.cpp
+    OpenXR/Path.cpp
+    OpenXR/Quirks.cpp
+    OpenXR/Session.cpp
+    OpenXR/Space.cpp
+    OpenXR/Swapchain.cpp
+    OpenXR/SwapchainGroup.cpp
+    OpenXR/System.cpp
+    XRFramebuffer.cpp
+    XRState.cpp
+    XRRealizeOperation.cpp
+    Action.cpp
+    ActionSet.cpp
+    CompositionLayer.cpp
+    CompositionLayerQuad.cpp
+    FrameStore.cpp
+    InteractionProfile.cpp
+    Manager.cpp
+    Mirror.cpp
+    MirrorSettings.cpp
+    OpenXRDisplay.cpp
+    Settings.cpp
+    Subaction.cpp
+    Swapchain.cpp
+    View.cpp
+    osgXR.cpp
+    projection.cpp
+)
+
+# Win32 graphics binding
+if(WIN32)
+    list(APPEND osgXR_SRCS
+        OpenXR/GraphicsBindingWin32.cpp
+    )
+    add_compile_definitions(OSGXR_USE_WIN32)
+endif()
+
+# X11 graphics binding
+find_package(X11)
+if(X11_FOUND)
+    list(APPEND osgXR_SRCS
+        OpenXR/GraphicsBindingX11.cpp
+    )
+    add_compile_definitions(OSGXR_USE_X11)
+endif()
+
+
+# Build osgXR as a library
+add_library(osgXR ${osgXR_LIBRARY_TYPE} ${osgXR_SRCS})
+
+get_target_property(osgXR_TYPE osgXR TYPE)
+if(osgXR_TYPE STREQUAL STATIC_LIBRARY)
+    # Needed to switch OSGXR_EXPORT off on Windows
+    set(OSGXR_STATIC_LIBRARY 1)
+endif()
+# Needed to switch OSGXR_EXPORT to dllexport on Windows
+add_compile_definitions(OSGXR_LIBRARY)
+
+# Generate a "generated/Version.h" header
+set(osgXR_VERSION_HEADER "${PROJECT_BINARY_DIR}/include/generated/Version.h")
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/Version.h.in"
+               "${osgXR_VERSION_HEADER}")
+
+# Generate  "osgXR/Config" header
+set(osgXR_CONFIG_HEADER "${PROJECT_BINARY_DIR}/include/osgXR/Config")
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/Config.in"
+               "${osgXR_CONFIG_HEADER}")
+list(APPEND osgXR_HEADERS "${osgXR_CONFIG_HEADER}")
+
+# Ensure required C++ standards are available
+target_compile_features(osgXR
+                        # smart pointers
+                        PUBLIC  cxx_std_11
+                        # std::optional
+                        PRIVATE cxx_std_17
+)
+
+# Enable compiler warnings
+if(OSGXR_WARNINGS)
+    target_compile_options(osgXR PRIVATE
+                           $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>,$<CXX_COMPILER_ID:GNU>>:
+                             -Wall -pedantic
+                             -Wextra -Wno-missing-field-initializers
+                                     -Wno-unused-parameter>
+                           $<$<CXX_COMPILER_ID:MSVC>:
+                             /W4>
+    )
+endif()
+
+target_include_directories(osgXR
+    PRIVATE
+        ${PROJECT_BINARY_DIR}/include
+        ${PROJECT_SOURCE_DIR}/include
+        ${OPENGL_INCLUDE_DIR}
+        ${OPENSCENEGRAPH_INCLUDE_DIRS}
+        ${OpenXR_INCLUDE_DIR}
+    PUBLIC
+        "$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>"
+        "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
+)
+
+target_link_libraries(osgXR
+    PRIVATE
+        ${OPENGL_LIBRARIES}
+    PUBLIC
+        ${OPENSCENEGRAPH_LIBRARIES}
+        OpenXR::openxr_loader
+)
+
+set_target_properties(osgXR
+    PROPERTIES
+        VERSION         ${PROJECT_VERSION}
+        SOVERSION       ${osgXR_SOVERSION}
+        PUBLIC_HEADER   "${osgXR_HEADERS}"
+        INTERFACE_osgXR_MAJOR_VERSION   ${osgXR_MAJOR_VERSION}
+        INTERFACE_osgXR_MINOR_VERSION   ${osgXR_MINOR_VERSION}
+)
+set_property(TARGET osgXR APPEND PROPERTY
+    COMPATIBLE_INTERFACE_STRING     osgXR_MAJOR_VERSION osgXR_MINOR_VERSION
+)