Volumetric Rendering

 # Copyright (C) 2023 The Qt Company Ltd.
 # SPDX-License-Identifier: BSD-3-Clause

 cmake_minimum_required(VERSION 3.16)
 project(widgetvolumetric LANGUAGES CXX)

 set(CMAKE_INCLUDE_CURRENT_DIR ON)

 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
 set(CMAKE_AUTOUIC ON)

 if(NOT DEFINED INSTALL_EXAMPLESDIR)
   set(INSTALL_EXAMPLESDIR "examples")
 endif()

 set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}")

 find_package(Qt6 COMPONENTS Core)
 find_package(Qt6 COMPONENTS Gui)
 find_package(Qt6 COMPONENTS Widgets)
 find_package(Qt6 COMPONENTS Graphs)

 qt_add_executable(widgetvolumetric
     main.cpp
     volumetric.cpp volumetric.h
 )
 set_target_properties(widgetvolumetric PROPERTIES
     WIN32_EXECUTABLE TRUE
     MACOSX_BUNDLE TRUE
 )
 target_link_libraries(widgetvolumetric PUBLIC
     Qt::Core
     Qt::Gui
     Qt::Widgets
     Qt::Graphs
 )

 set(widgetvolumetric_resource_files
     "layer_ground.png"
     "layer_magma.png"
     "layer_water.png"
 )

 qt6_add_resources(widgetvolumetric "widgetvolumetric"
     PREFIX
         "/heightmaps"
     FILES
         ${widgetvolumetric_resource_files}
 )

 install(TARGETS widgetvolumetric
     RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
     BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
     LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
 )