OpenSubdiv/opensubdiv/osd/CMakeLists.txt

#
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#

#-------------------------------------------------------------------------------
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
    vertexBuffer.cpp    
)

set(KERNEL_FILES
)

set(INC_FILES
)

set(PRIVATE_HEADER_FILES
    local.h
)

set(PUBLIC_HEADER_FILES
    cpuDispatcher.h
    cpuKernel.h
    kernelDispatcher.h
    mesh.h
    vertex.h
    vertexBuffer.h
)

#-------------------------------------------------------------------------------
# platform dependent tweaks
if(APPLE)

elseif(UNIX)
    set(PLATFORM_COMPILE_FLAGS
        -fPIC
    )
elseif(WIN32)

endif()

add_definitions(
    ${PLATFORM_COMPILE_FLAGS}
)

#-------------------------------------------------------------------------------
if( OPENMP_FOUND )
    add_definitions(
        -DOPENSUBDIV_HAS_OPENMP
        ${OpenMP_CXX_FLAGS}
    )
    if (CMAKE_COMPILER_IS_GNUCXX)
        list(APPEND PLATFORM_LIBRARIES
            gomp
        )
    endif()
else()
    message(STATUS
        "* OpenMP was not found : support for OMP parallel compute kernels will be diabled "
        "in Osd. If your compiler supports OpenMP directives, please refer to the "
        "FindOpenMP.cmake shared module in your cmake installation.")
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_HEADER_FILES
        glslDispatcher.h
    )
    list(APPEND KERNEL_FILES
        glslKernel.glsl
    )
    list(APPEND PLATFORM_LIBRARIES
        ${OPENGL_LIBRARY}
        ${GLEW_LIBRARY}
    )	
    add_definitions(
        -DOPENSUBDIV_HAS_GLSL
    )
else()
    message(STATUS
        "* OpenGL was not found : support for GLSL parallel compute kernels will be disabled "
        "in Osd. If you have an OpenGL SDK installed (version 4.2 or above), please refer to "
        "the FindOpenGL.cmake shared module in your cmake installation.")
endif()

#-------------------------------------------------------------------------------
# OpenCL code & dependencies 
if ( OPENCL_FOUND )
    list(APPEND SOURCE_FILES
        clDispatcher.cpp
    )
    list(APPEND PUBLIC_HEADER_FILES
        clDispatcher.h
    )
    list(APPEND KERNEL_FILES
        clKernel.cl
    )
    list(APPEND PLATFORM_LIBRARIES
        ${OPENCL_LIBRARIES}
    )	
    add_definitions(
        -DOPENSUBDIV_HAS_OPENCL
    )
else()
    message(STATUS
        "* OpenCL was not found : support for OpenCL parallel compute kernels will be disabled "
        "in Osd. If you have the OpenCL SDK installed, please refer to the FindOpenCL.cmake "
        "in ${PROJECT_SOURCE_DIR}/cmake.")
endif()

#-------------------------------------------------------------------------------
# CUDA code & dependencies 
if( CUDA_FOUND )
    list(APPEND SOURCE_FILES
        cudaDispatcher.cpp
    )
    list(APPEND PUBLIC_HEADER_FILES
        cudaDispatcher.h
    )
    list(APPEND KERNEL_FILES
        cudaKernel.cu
    )
    add_definitions(
        -DOPENSUBDIV_HAS_CUDA
    )
    if (UNIX)
        list( APPEND CUDA_NVCC_FLAGS -Xcompiler -fPIC )
    endif()
else()
    message(STATUS
        "* CUDA was not found : support for CUDA parallel compute kernels will be disabled "
        "in Osd. If you have the CUDA SDK installed, please refer to the FindCUDA.cmake "
        "shared module in your cmake installation.")
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 STATIC
    ${SOURCE_FILES}
    ${PRIVATE_HEADER_FILES}
    ${PUBLIC_HEADER_FILES}
    ${KERNEL_FILES}
    ${INC_FILES}
)
set_target_properties(osd_static PROPERTIES OUTPUT_NAME osd CLEAN_DIRECT_OUTPUT 1)

target_link_libraries(osd_static
    ${PLATFORM_LIBRARIES}
)

if (NOT WIN32)
    _add_library(osd_dynamic SHARED
        ${SOURCE_FILES}
        ${PRIVATE_HEADER_FILES}
        ${PUBLIC_HEADER_FILES}
        ${KERNEL_FILES}
        ${INC_FILES}
    )

    set_target_properties(osd_dynamic PROPERTIES OUTPUT_NAME osd CLEAN_DIRECT_OUTPUT 1)

    target_link_libraries(osd_dynamic
        ${PLATFORM_LIBRARIES}
    )

endif()


install( FILES ${PUBLIC_HEADER_FILES}
         DESTINATION include/osd
         PERMISSIONS OWNER_READ GROUP_READ WORLD_READ )

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