76 lines
2.5 KiB
CMake
76 lines
2.5 KiB
CMake
include(CMakeParseArguments)
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# 查找Python解释器
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find_package(Python3 REQUIRED)
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# 存储脚本路径
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set(SHADER_COMPILE_SCRIPT "${CMAKE_CURRENT_SOURCE_DIR}/tools/compile_shaders.py")
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# 在cache目录下创建着色器目录.txt
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set(SHADER_PATH_FILE ${CMAKE_CACHEFILE_DIR}/shader_paths.txt)
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file(REMOVE ${SHADER_PATH_FILE})
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file(WRITE ${SHADER_PATH_FILE} "")
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# 添加着色器目录的函数
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function(add_mirage_shader_directory path)
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# 将路径写入shader_paths.txt
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file(APPEND ${SHADER_PATH_FILE} "${path}\n")
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# 观察目录文件是否修改, 触发compile_shaders目标重新编译
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file(GLOB_RECURSE SHADER_FILES "${path}/*.slang")
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# 设置依赖关系，当shader文件变化时重新编译
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foreach(SHADER_FILE ${SHADER_FILES})
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set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${SHADER_FILE})
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endforeach()
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# 添加到全局变量以便在其他地方使用
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set(SHADER_FILES_GLOBAL ${SHADER_FILES_GLOBAL} ${SHADER_FILES} PARENT_SCOPE)
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endfunction()
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set(SHADER_COMPILE_ARGS "")
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set(SHADER_SHDC "")
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if (WIN32)
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list(APPEND SHADER_COMPILE_ARGS "--hlsl")
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set(SHADER_SHDC ${MIRAGE_ROOT_DIR}/tools/mirage_shdc.exe)
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elseif (APPLE)
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list(APPEND SHADER_COMPILE_ARGS "--metal")
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set(SHADER_SHDC ${MIRAGE_ROOT_DIR}/tools/mirage_shdc)
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else()
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list(APPEND SHADER_COMPILE_ARGS "--glsl")
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set(SHADER_SHDC ${MIRAGE_ROOT_DIR}/tools/mirage_shdc)
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endif()
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# 如果是Debug模式, 添加--debug选项
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if (CMAKE_BUILD_TYPE STREQUAL "Debug")
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list(APPEND SHADER_COMPILE_ARGS "--debug")
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endif ()
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# 添加编译目标, 调用tools/compile_shaders.py
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add_custom_target(compile_shaders ALL
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COMMAND ${Python3_EXECUTABLE} ${SHADER_COMPILE_SCRIPT}
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--shdc ${SHADER_SHDC}
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--shader_list ${SHADER_PATH_FILE}
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${SHADER_COMPILE_ARGS}
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COMMENT "编译着色器"
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VERBATIM
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)
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# 添加强制重新编译着色器的目标
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add_custom_target(force_recompile_shaders
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COMMAND ${CMAKE_COMMAND} -E remove -f ${SHADER_PATH_FILE}
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COMMAND ${CMAKE_COMMAND} -E touch ${SHADER_PATH_FILE}
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COMMAND ${Python3_EXECUTABLE} ${SHADER_COMPILE_SCRIPT}
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--shdc ${SHADER_SHDC}
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--shader_list ${SHADER_PATH_FILE}
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${SHADER_COMPILE_ARGS}
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--force
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COMMENT "强制重新编译所有着色器"
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VERBATIM
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)
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# 定义一个宏，将编译着色器作为其他目标的依赖
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function(add_shader_dependencies target)
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add_dependencies(${target} compile_shaders)
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endfunction()
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