Compiling GLSL to SPIR-V from CMake

CMakeLists.txt

if (${CMAKE_HOST_SYSTEM_PROCESSOR} STREQUAL "AMD64")
  set(GLSL_VALIDATOR "$ENV{VULKAN_SDK}/Bin/glslangValidator.exe")
else()
  set(GLSL_VALIDATOR "$ENV{VULKAN_SDK}/Bin32/glslangValidator.exe")
endif()

file(GLOB_RECURSE GLSL_SOURCE_FILES
    "shaders/*.frag"
    "shaders/*.vert"
    )

foreach(GLSL ${GLSL_SOURCE_FILES})
  get_filename_component(FILE_NAME ${GLSL} NAME)
  set(SPIRV "${PROJECT_BINARY_DIR}/shaders/${FILE_NAME}.spv")
  add_custom_command(
    OUTPUT ${SPIRV}
    COMMAND ${CMAKE_COMMAND} -E make_directory "${PROJECT_BINARY_DIR}/shaders/"
    COMMAND ${GLSL_VALIDATOR} -V ${GLSL} -o ${SPIRV}
    DEPENDS ${GLSL})
  list(APPEND SPIRV_BINARY_FILES ${SPIRV})
endforeach(GLSL)

add_custom_target(
    Shaders 
    DEPENDS ${SPIRV_BINARY_FILES}
    )

add_dependencies(YourMainTarget Shaders)

add_custom_command(TARGET YourMainTarget POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E make_directory "$<TARGET_FILE_DIR:YourMainTarget>/shaders/"
    COMMAND ${CMAKE_COMMAND} -E copy_directory
        "${PROJECT_BINARY_DIR}/shaders"
        "$<TARGET_FILE_DIR:YourMainTarget>/shaders"
        )

Thanks pal 👍

Nice!

if "$<TARGET_FILE_DIR:YourMainTarget>" is equal to "${PROJECT_BINARY_DIR}" the shaders folder is overwritten and the spv files become empty. You need a guard to that POST_BUILD custom command, but you can't use generator expressions on "if"s ( "$<TARGET_FILE_DIR:YourMainTarget>" )

Awesome!

Thanks!

thanks!

Wow, I didn't know this would be useful to anyone. At least something came out out of that mess-of-a-vulkan project of mine, that I spent a whole year working on.

Thanks man!

Thanks!

Nice job!

Thanks!

Thanks, work like a charm!!

Thanks!
I just wanted less stuff in my main CMakeLists.txt

set (SHADER_SOURCES 
	"${CMAKE_SOURCE_DIR}/shaders/test.vert")

APPEND_GLSL_TO_TARGET( MY_PROJECT ${SHADER_SOURCES})

So i moved it all into a cmake/compileGLSL.cmake as a macro

if (${CMAKE_HOST_SYSTEM_PROCESSOR} STREQUAL "AMD64")
  set(GLSL_VALIDATOR "$ENV{VULKAN_SDK}/Bin/glslangValidator.exe")
else()
  set(GLSL_VALIDATOR "$ENV{VULKAN_SDK}/Bin32/glslangValidator.exe")
endif()


macro(APPEND_GLSL_TO_TARGET target sources)
	set(GLSL_SOURCE_FILES ${sources})

	foreach(GLSL ${GLSL_SOURCE_FILES})
	  get_filename_component(FILE_NAME ${GLSL} NAME)
	  set(SPIRV "${PROJECT_BINARY_DIR}/shaders/${FILE_NAME}.spv")
	  
	  add_custom_command(
	    OUTPUT ${SPIRV}
	    COMMAND cd
	    COMMAND "${CMAKE_COMMAND}" -E make_directory "${PROJECT_BINARY_DIR}/shaders/"
	    COMMAND "${GLSL_VALIDATOR}" -V ${GLSL} -o ${SPIRV}
	    DEPENDS ${GLSL})
	  list(APPEND SPIRV_BINARY_FILES ${SPIRV})
	endforeach(GLSL)

	add_custom_target(
	    Shaders
	    DEPENDS ${SPIRV_BINARY_FILES}
	    )

	add_dependencies(${target} Shaders)

	add_custom_command(TARGET ${target} POST_BUILD
	    COMMAND ${CMAKE_COMMAND} -E make_directory "$<TARGET_FILE_DIR:${target}>/shaders/"
	    COMMAND ${CMAKE_COMMAND} -E copy_directory
		"${PROJECT_BINARY_DIR}/shaders"
		"$<TARGET_FILE_DIR:${target}>/shaders"    )
endmacro()

Again, thank you very much

Thank you !

Thank you, I learned something new today 🐔👍