Progressia/tools/embed/embed.cmake
2022-11-18 22:13:48 +03:00

152 lines
4.6 KiB
CMake

# embed.cmake
# Generates embedded_resources.h and embedded_resources.cpp
find_package(Vulkan COMPONENTS glslc REQUIRED)
find_program(glslc_EXECUTABLE NAMES glslc HINTS Vulkan::glslc)
find_package(Python3 COMPONENTS Interpreter REQUIRED)
macro (get_target_property_or var target prop default)
get_property(__is_set TARGET ${target} PROPERTY ${prop} SET)
if (__is_set)
get_property(${var} TARGET ${target} PROPERTY ${prop})
else()
set(${var} "${default}")
endif()
unset(__is_set)
endmacro()
function (target_embeds)
set(expecting_name FALSE)
set(target "")
set(current_asset "")
foreach (word ${ARGV})
# First argument is target name
if (target STREQUAL "")
set(target "${word}")
get_target_property_or(script_args "${target}" EMBED_ARGS "")
get_target_property_or(embeds "${target}" EMBEDS "")
continue()
endif()
if (current_asset STREQUAL "")
# Beginning of asset declaration (1/2)
set(current_asset "${word}")
elseif (expecting_name)
# End of "asset AS asset_name"
list(APPEND script_args "${current_asset};as;${word}")
list(APPEND embeds ${current_asset})
set(current_asset "")
set(expecting_name FALSE)
elseif ("${word}" STREQUAL "AS")
# Keyword AS in "asset AS asset_name"
set(expecting_name TRUE)
else()
# End of asset without AS, beginning of asset declaration (2/2)
list(APPEND script_args "${current_asset};as;${current_asset}")
list(APPEND embeds ${current_asset})
set(current_asset "${word}")
endif()
endforeach()
if (expecting_name)
message(FATAL_ERROR "No name given for asset \"${current_asset}\"")
endif()
if (NOT current_asset STREQUAL "")
list(APPEND script_args "${current_asset};as;${current_asset}")
endif()
set_target_properties("${target}" PROPERTIES EMBED_ARGS "${script_args}")
set_target_properties("${target}" PROPERTIES EMBEDS "${embeds}")
endfunction()
file(MAKE_DIRECTORY "${generated}/embedded_resources")
function(compile_embeds target)
get_target_property(script_args "${target}" EMBED_ARGS)
get_target_property(embeds "${target}" EMBEDS)
add_custom_command(
OUTPUT ${generated}/embedded_resources/embedded_resources.cpp
${generated}/embedded_resources/embedded_resources.h
COMMAND ${Python3_EXECUTABLE} ${tools}/embed/embed.py
--cpp ${generated}/embedded_resources/embedded_resources.cpp
--header ${generated}/embedded_resources/embedded_resources.h
--
${script_args}
DEPENDS ${embeds}
${tools}/embed/embed.py
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
COMMENT "Embedding assets"
)
endfunction()
## Global variables. Yikes. FIXME
#set(tools ${PROJECT_SOURCE_DIR}/tools)
#set(generated ${PROJECT_BINARY_DIR}/generated)
#set(assets_to_embed "")
#set(assets_to_embed_args "")
#
#file(MAKE_DIRECTORY ${generated})
#
#find_package(Vulkan COMPONENTS glslc REQUIRED)
#find_program(glslc_executable NAMES glslc HINTS Vulkan::glslc)
#set(shaders ${generated}/shaders)
#file(MAKE_DIRECTORY ${shaders})
#
## Shedules compilation of shaders
## Adapted from https://stackoverflow.com/a/60472877/4463352
#macro(compile_shader)
# foreach(source ${ARGV})
# get_filename_component(source_basename ${source} NAME)
# set(tmp "${shaders}/${source_basename}.spv")
# add_custom_command(
# OUTPUT ${tmp}
# DEPENDS ${source}
# COMMAND ${glslc_executable}
# -o ${tmp}
# ${CMAKE_CURRENT_SOURCE_DIR}/${source}
# COMMENT "Compiling shader ${source}"
# )
# list(APPEND assets_to_embed_args "${tmp};as;${source_basename}.spv")
# list(APPEND assets_to_embed "${tmp}")
# unset(tmp)
# unset(source_basename)
# endforeach()
#endmacro()
#
#compile_shader(
# desktop/graphics/shaders/shader.frag
# desktop/graphics/shaders/shader.vert
#)
#
## Generate embed files
#add_custom_command(
# OUTPUT ${generated}/embedded_resources.cpp
# ${generated}/embedded_resources.h
#
# COMMAND ${tools}/embed/embed.py
# --cpp ${generated}/embedded_resources.cpp
# --header ${generated}/embedded_resources.h
# --
# ${assets_to_embed_args}
#
# DEPENDS "${assets_to_embed}"
# ${tools}/embed/embed.py
#
# WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
# COMMENT "Embedding assets"
#)
#