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

113 lines
3.3 KiB
CMake

# glslc.cmake
# Compiles GLSL shaders to SPV files
find_package(Vulkan COMPONENTS glslc REQUIRED)
find_program(glslc_EXECUTABLE NAMES glslc HINTS Vulkan::glslc)
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_glsl_shaders)
set(target "")
foreach (word ${ARGV})
# First argument is target name
if (target STREQUAL "")
set(target ${word})
get_target_property_or(glsl_shaders ${target} GLSL_SHADERS "")
else()
list(APPEND glsl_shaders ${word})
endif()
endforeach()
set_target_properties(${target} PROPERTIES GLSL_SHADERS "${glsl_shaders}")
endfunction()
file(MAKE_DIRECTORY "${generated}/compiled_glsl_shaders")
function(compile_glsl target)
get_target_property(glsl_shaders ${target} GLSL_SHADERS)
foreach (source_path ${glsl_shaders})
get_filename_component(source_basename ${source_path} NAME)
set(spv_path
"${generated}/compiled_glsl_shaders/${source_basename}.spv")
add_custom_command(
OUTPUT ${spv_path}
DEPENDS ${source_path}
COMMAND ${glslc_EXECUTABLE}
-o ${spv_path}
${CMAKE_CURRENT_SOURCE_DIR}/${source_path}
COMMENT "Compiling shader ${source_path}"
)
target_embeds(${target} ${spv_path} AS "${source_basename}.spv")
endforeach()
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"
#)
#