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## Copyright 2009-2020 Intel Corporation
## SPDX-License-Identifier: Apache-2.0
# ##################################################################
# add macro INCLUDE_DIRECTORIES_ISPC() that allows to specify search
# paths for ISPC sources
# ##################################################################
SET(ISPC_INCLUDE_DIR "")
MACRO (INCLUDE_DIRECTORIES_ISPC)
SET(ISPC_INCLUDE_DIR ${ISPC_INCLUDE_DIR} ${ARGN})
ENDMACRO ()
IF (EMBREE_ISPC_SUPPORT)
# ISPC versions to look for, in decending order (newest first)
SET(ISPC_VERSION_WORKING "1.9.1" "1.9.0" "1.8.3" "1.8.2")
LIST(GET ISPC_VERSION_WORKING -1 ISPC_VERSION_REQUIRED)
IF (NOT EMBREE_ISPC_EXECUTABLE)
# try sibling folder as hint for path of ISPC
IF (APPLE)
SET(ISPC_DIR_SUFFIX "osx")
ELSEIF(WIN32)
SET(ISPC_DIR_SUFFIX "windows")
IF (MSVC14)
LIST(APPEND ISPC_DIR_SUFFIX "windows-vs2015")
ELSE()
LIST(APPEND ISPC_DIR_SUFFIX "windows-vs2013")
ENDIF()
ELSE()
SET(ISPC_DIR_SUFFIX "linux")
ENDIF()
FOREACH(ver ${ISPC_VERSION_WORKING})
FOREACH(suffix ${ISPC_DIR_SUFFIX})
LIST(APPEND ISPC_DIR_HINT ${PROJECT_SOURCE_DIR}/../ispc-v${ver}-${suffix})
ENDFOREACH()
ENDFOREACH()
FIND_PROGRAM(EMBREE_ISPC_EXECUTABLE ispc PATHS ${ISPC_DIR_HINT} DOC "Path to the ISPC executable.")
IF (NOT EMBREE_ISPC_EXECUTABLE)
MESSAGE(FATAL_ERROR "Intel SPMD Compiler (ISPC) not found. Disable EMBREE_ISPC_SUPPORT or install ISPC.")
ELSE()
MESSAGE(STATUS "Found Intel SPMD Compiler (ISPC): ${EMBREE_ISPC_EXECUTABLE}")
ENDIF()
ENDIF()
# check ISPC version
EXECUTE_PROCESS(COMMAND ${EMBREE_ISPC_EXECUTABLE} --version
OUTPUT_VARIABLE ISPC_OUTPUT
RESULT_VARIABLE ISPC_RESULT)
IF (NOT ${ISPC_RESULT} STREQUAL "0")
MESSAGE(FATAL_ERROR "Error executing ISPC executable '${EMBREE_ISPC_EXECUTABLE}': ${ISPC_RESULT}")
ENDIF()
STRING(REGEX MATCH "([0-9]+[.][0-9]+[.][0-9]+)" DUMMY "${ISPC_OUTPUT}")
SET(ISPC_VERSION ${CMAKE_MATCH_1})
IF (ISPC_VERSION VERSION_LESS ISPC_VERSION_REQUIRED)
MESSAGE(FATAL_ERROR "ISPC ${ISPC_VERSION} is too old. You need at least ISPC ${ISPC_VERSION_REQUIRED}.")
ENDIF()
GET_FILENAME_COMPONENT(ISPC_DIR ${EMBREE_ISPC_EXECUTABLE} PATH)
SET(EMBREE_ISPC_ADDRESSING 32 CACHE STRING "32vs64 bit addressing in ispc")
SET_PROPERTY(CACHE EMBREE_ISPC_ADDRESSING PROPERTY STRINGS 32 64)
MARK_AS_ADVANCED(EMBREE_ISPC_ADDRESSING)
MACRO (ISPC_COMPILE)
SET(ISPC_ADDITIONAL_ARGS "")
SET(ISPC_TARGET_EXT ${CMAKE_CXX_OUTPUT_EXTENSION})
STRING(REPLACE ";" "," ISPC_TARGET_ARGS "${ISPC_TARGETS}")
IF (CMAKE_SIZEOF_VOID_P EQUAL 8)
SET(ISPC_ARCHITECTURE "x86-64")
ELSE()
SET(ISPC_ARCHITECTURE "x86")
ENDIF()
SET(ISPC_TARGET_DIR ${CMAKE_CURRENT_BINARY_DIR})
IF(ISPC_INCLUDE_DIR)
STRING(REPLACE ";" ";-I;" ISPC_INCLUDE_DIR_PARMS "${ISPC_INCLUDE_DIR}")
SET(ISPC_INCLUDE_DIR_PARMS "-I" ${ISPC_INCLUDE_DIR_PARMS})
ENDIF()
IF (WIN32 OR "${CMAKE_BUILD_TYPE}" STREQUAL "Release")
SET(ISPC_OPT_FLAGS -O3)
ELSE()
SET(ISPC_OPT_FLAGS -O2)
ENDIF()
IF (WIN32)
SET(ISPC_ADDITIONAL_ARGS ${ISPC_ADDITIONAL_ARGS} --dllexport)
ELSE()
SET(ISPC_ADDITIONAL_ARGS ${ISPC_ADDITIONAL_ARGS} --pic)
ENDIF()
SET(ISPC_OBJECTS "")
FOREACH(src ${ARGN})
GET_FILENAME_COMPONENT(fname ${src} NAME_WE)
GET_FILENAME_COMPONENT(dir ${src} PATH)
SET(outdir "${ISPC_TARGET_DIR}/${dir}")
SET(input ${CMAKE_CURRENT_SOURCE_DIR}/${src})
SET(deps "")
IF (EXISTS ${outdir}/${fname}.dev.idep)
FILE(READ ${outdir}/${fname}.dev.idep contents)
STRING(REPLACE " " ";" contents "${contents}")
STRING(REPLACE ";" "\\\\;" contents "${contents}")
STRING(REPLACE "\n" ";" contents "${contents}")
FOREACH(dep ${contents})
IF (EXISTS ${dep})
SET(deps ${deps} ${dep})
ENDIF (EXISTS ${dep})
ENDFOREACH(dep ${contents})
ENDIF ()
SET(results "${outdir}/${fname}.dev${ISPC_TARGET_EXT}")
# if we have multiple targets add additional object files
LIST(LENGTH ISPC_TARGETS NUM_TARGETS)
IF (NUM_TARGETS GREATER 1)
FOREACH(target ${ISPC_TARGETS})
# in v1.9.0 ISPC changed the ISA suffix of avx512knl-i32x16 to just 'avx512knl'
IF (${target} STREQUAL "avx512knl-i32x16" AND NOT ISPC_VERSION VERSION_LESS "1.9.0")
SET(target "avx512knl")
ELSEIF (${target} STREQUAL "avx512skx-i32x16")
SET(target "avx512skx")
ENDIF()
SET(results ${results} "${outdir}/${fname}.dev_${target}${ISPC_TARGET_EXT}")
ENDFOREACH()
ENDIF()
ADD_CUSTOM_COMMAND(
OUTPUT ${results} ${ISPC_TARGET_DIR}/${fname}_ispc.h
COMMAND ${CMAKE_COMMAND} -E make_directory ${outdir}
COMMAND ${EMBREE_ISPC_EXECUTABLE}
-I ${CMAKE_CURRENT_SOURCE_DIR}
${ISPC_INCLUDE_DIR_PARMS}
${ISPC_DEFINITIONS}
--arch=${ISPC_ARCHITECTURE}
--addressing=${EMBREE_ISPC_ADDRESSING}
${ISPC_OPT_FLAGS}
--target=${ISPC_TARGET_ARGS}
--woff
--opt=fast-math
${ISPC_ADDITIONAL_ARGS}
-h ${ISPC_TARGET_DIR}/${fname}_ispc.h
-MMM ${outdir}/${fname}.dev.idep
-o ${outdir}/${fname}.dev${ISPC_TARGET_EXT}
${input}
DEPENDS ${input} ${deps}
COMMENT "Building ISPC object ${outdir}/${fname}.dev${ISPC_TARGET_EXT}"
)
SET(ISPC_OBJECTS ${ISPC_OBJECTS} ${results})
ENDFOREACH()
ENDMACRO()
MACRO (ADD_EMBREE_ISPC_EXECUTABLE name)
SET(ISPC_SOURCES "")
SET(OTHER_SOURCES "")
FOREACH(src ${ARGN})
GET_FILENAME_COMPONENT(ext ${src} EXT)
IF (ext STREQUAL ".ispc")
SET(ISPC_SOURCES ${ISPC_SOURCES} ${src})
ELSE ()
SET(OTHER_SOURCES ${OTHER_SOURCES} ${src})
ENDIF ()
ENDFOREACH()
ISPC_COMPILE(${ISPC_SOURCES})
ADD_EXECUTABLE(${name} ${ISPC_OBJECTS} ${OTHER_SOURCES})
ENDMACRO()
MACRO (ADD_ISPC_LIBRARY name type)
SET(ISPC_SOURCES "")
SET(OTHER_SOURCES "")
FOREACH(src ${ARGN})
GET_FILENAME_COMPONENT(ext ${src} EXT)
IF (ext STREQUAL ".ispc")
SET(ISPC_SOURCES ${ISPC_SOURCES} ${src})
ELSE ()
SET(OTHER_SOURCES ${OTHER_SOURCES} ${src})
ENDIF ()
ENDFOREACH()
ISPC_COMPILE(${ISPC_SOURCES})
ADD_LIBRARY(${name} ${type} ${ISPC_OBJECTS} ${OTHER_SOURCES})
ENDMACRO()
ELSE (EMBREE_ISPC_SUPPORT)
MACRO (ADD_ISPC_LIBRARY name type)
SET(ISPC_SOURCES "")
SET(OTHER_SOURCES "")
FOREACH(src ${ARGN})
GET_FILENAME_COMPONENT(ext ${src} EXT)
IF (ext STREQUAL ".ispc")
SET(ISPC_SOURCES ${ISPC_SOURCES} ${src})
ELSE ()
SET(OTHER_SOURCES ${OTHER_SOURCES} ${src})
ENDIF ()
ENDFOREACH()
ADD_LIBRARY(${name} ${type} ${OTHER_SOURCES})
ENDMACRO()
ENDIF (EMBREE_ISPC_SUPPORT)
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