OpenSubdiv/opensubdiv/osd/CMakeLists.txt

#
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#

#-------------------------------------------------------------------------------
find_package(IlmBase REQUIRED)

find_package(OpenGL)
find_package(GLEW)

find_package(CUDA)


include_directories(
    ${ILMBASE_INCLUDE_DIR}
    ${OPENGL_INCLUDE_DIR}
    ${GLEW_INCLUDE_DIR}
    ${PROJECT_SOURCE_DIR}/opensubdiv
)

#-------------------------------------------------------------------------------
# source & headers
set(SOURCE_FILES
    cpuDispatcher.cpp
    cpuKernel.cpp
    kernelDispatcher.cpp
    mesh.cpp
)

set(KERNEL_FILES
)

set(INC_FILES
)

set(PUBLIC_HEADERS
    cpuDispatcher.h
    cpuKernel.h
    kernelDispatcher.h
    mesh.h
    vertex.h
)


#-------------------------------------------------------------------------------
# CPU (omp) code & dependencies
if(APPLE)
    set(PLATFORM_COMPILE_FLAGS
	-fopenmp
    )
    set(PLATFORM_LIBRARIES
	gomp
    )
elseif(UNIX)
    set(PLATFORM_COMPILE_FLAGS
        -fopenmp
        -fPIC
    )
    set(PLATFORM_LIBRARIES
        gomp
    )
elseif(WIN32 or WIN64)
    set(PLATFORM_COMPILE_FLAGS
        /openmp
    )       
endif()



#-------------------------------------------------------------------------------
# GL code & dependencies 
# note : (GLSL compute kernels require GL 4.2, which excludes APPLE) 
if( OPENGL_FOUND AND GLEW_FOUND AND (NOT APPLE) )
    list(APPEND SOURCE_FILES
        glslDispatcher.cpp
    )
    list(APPEND PUBLIC_HEADERS
        glslDispatcher.h
    )
    list(APPEND KERNEL_FILES
        glslKernel.glsl
    )
    list(APPEND PLATFORM_LIBRARIES
        ${OPENGL_LIBRARY}
        ${GLEW_LIBRARY}
    )	
endif()

#-------------------------------------------------------------------------------
# CUDA code & dependencies 
if( CUDA_FOUND )
    list(APPEND SOURCE_FILES
        cudaDispatcher.cpp
    )
    list(APPEND PUBLIC_HEADERS
        cudaDispatcher.h
    )
    list(APPEND KERNEL_FILES
        cudaKernel.cu
    )
endif()


#-------------------------------------------------------------------------------
# Kernel Stringification
# We want to use preprocessor include directives to include GLSL and OpenCL
# kernel source files in cpp files, but since the sources contain newline
# characters we would need raw string literals from C++11 to do this directly.
# To avoid depending on C++11 we instead use a small tool called "line_quote"
# to generate source files that are suitable for direct inclusion.
foreach(kernel_file ${KERNEL_FILES})

    string(REGEX REPLACE ".*[.](.*)" "\\1" extension ${kernel_file})

    if(NOT ${extension} STREQUAL "cu")

        string(REGEX REPLACE "(.*)[.].*" "\\1.inc" inc_file ${kernel_file})
        list(APPEND INC_FILES ${inc_file})
        
        add_custom_command(
            OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/${inc_file}
            COMMAND stringify ${CMAKE_CURRENT_SOURCE_DIR}/${kernel_file}
                ${CMAKE_CURRENT_SOURCE_DIR}/${inc_file}
            DEPENDS stringify ${CMAKE_CURRENT_SOURCE_DIR}/${kernel_file}
        )
        
    endif()    
endforeach()

#-------------------------------------------------------------------------------
source_group("Kernels" FILES ${KERNEL_FILES})
source_group("Inc" FILES ${INC_FILES})

_add_library(osd STATIC
    ${SOURCE_FILES}
    ${HEADER_FILES}
    ${KERNEL_FILES}
    ${INC_FILES}
)

target_link_libraries(osd
    ${OPENGL_LIBRARY}
    ${PLATFORM_LIBRARIES}
)

#-------------------------------------------------------------------------------