cmake_minimum_required(VERSION 3.0)

project(gpgpu)

set(CMAKE_CXX_STANDARD 11)

# Add OpenGL and OpenCL
find_package(OpenCL REQUIRED)
find_package(OpenGL REQUIRED)

# Add Glad
add_library(glad src/glad.c)
include_directories(include)

# Add GLFW as a submodule (since it has its own CMake files)
add_subdirectory(lib/glfw)
include_directories(lib/glfw/include)

# Define the paths to the source files
set(APP_SOURCES
 ${CMAKE_CURRENT_SOURCE_DIR}/src/main.cpp
 ${CMAKE_CURRENT_SOURCE_DIR}/src/GpuParticleSystem.cpp
 ${CMAKE_CURRENT_SOURCE_DIR}/src/GpuPerlinNoise.cpp
 ${CMAKE_CURRENT_SOURCE_DIR}/src/GpuSimpleAdd.cpp
 ${CMAKE_CURRENT_SOURCE_DIR}/src/CL_Helpers.cpp
)

# Define the paths to the cl files
set(APP_KERNELS
 ${CMAKE_CURRENT_SOURCE_DIR}/src/Addition.cl
 ${CMAKE_CURRENT_SOURCE_DIR}/src/PerlinNoise.cl
 ${CMAKE_CURRENT_SOURCE_DIR}/src/ParticleSystem.cl
)

# Give them a name
source_group( "sources" FILES ${APP_SOURCES} )
source_group( "shaders" FILES ${APP_KERNELS} )

# Use the source files for the project
add_executable(${PROJECT_NAME} ${APP_SOURCES} ${APP_KERNELS})

# Link libraries
target_link_libraries(${PROJECT_NAME} OpenCL::OpenCL OpenGL::GL glfw glad)

# Set the startup project in Visual Studio
if(MSVC)
	set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT ${PROJECT_NAME})
endif()

# Define the string "CMAKELISTS_SOURCE_DIR", which is used in the .cpp files to more easily find the shader files
target_compile_definitions(${PROJECT_NAME} PUBLIC CMAKELISTS_SOURCE_DIR="${CMAKE_CURRENT_SOURCE_DIR}")