Files
imhex/lib/libimhex/CMakeLists.txt
paxcut 5c4cf7379f feat: Added Subpixel Font rendering (#2092)
Proof of concept for implementing subpixel processing in ImGui. This is
work in progress, and it is bound to have problems.

What it does:
1) Uses freetype own subpixel processing implementation to build a
32-bit color atlas for the default font only (no icons, no unifont) . 2)
Avoids pixel perfect font conversion when possible. 3) Self contained,
no ImGui source code changes.
4) Results in much improved legibility of fonts rendered on low dpi LCD
screens that use horizontal RGB pixel layouts (no BRG or OLED or CRT if
they even exist anymore)

What it doesn't:
1) Fancy class based interface. The code is barely the minimum needed to
show it can work. 2) Dual source color blending. That needs to be
implemented in shader code, so it needs to change ImGui source code
although minimally. This will result in some characters appearing dimmer
than others. Easily fixed with small fragment and vertex shaders. 3)
subpixel positioning. If characters are very thin they will look
colored, or they can be moved to improve legibility. 4) deal with
detection of fringe cases including rare pixel layouts, non LCD screens,
Mac-OS not handling subpixel rendering and any other deviation from the
standard LCD. 5) tries to be efficient in speed or memory use. Font
Atlases will be 4 times the size they were before, but there are no
noticeable delays in font loading in the examples I have tried.

Any comments and code improvements are welcome.

---------

Co-authored-by: Nik <werwolv98@gmail.com>
2025-05-11 15:36:32 +02:00

181 lines
6.2 KiB
CMake

cmake_minimum_required(VERSION 3.16)
project(libimhex)
set(CMAKE_CXX_STANDARD 23)
set(LIBIMHEX_SOURCES
source/api/imhex_api.cpp
source/api/content_registry.cpp
source/api/event_manager.cpp
source/api/task_manager.cpp
source/api/shortcut_manager.cpp
source/api/plugin_manager.cpp
source/api/project_file_manager.cpp
source/api/theme_manager.cpp
source/api/layout_manager.cpp
source/api/workspace_manager.cpp
source/api/achievement_manager.cpp
source/api/localization_manager.cpp
source/api/tutorial_manager.cpp
source/data_processor/attribute.cpp
source/data_processor/link.cpp
source/data_processor/node.cpp
source/helpers/utils.cpp
source/helpers/utils_linux.cpp
source/helpers/fs.cpp
source/helpers/magic.cpp
source/helpers/crypto.cpp
source/helpers/http_requests.cpp
source/helpers/http_requests_native.cpp
source/helpers/http_requests_emscripten.cpp
source/helpers/opengl.cpp
source/helpers/patches.cpp
source/helpers/encoding_file.cpp
source/helpers/logger.cpp
source/helpers/tar.cpp
source/helpers/debugging.cpp
source/helpers/default_paths.cpp
source/helpers/imgui_hooks.cpp
source/helpers/semantic_version.cpp
source/helpers/keys.cpp
source/helpers/freetype.cpp
source/test/tests.cpp
source/providers/provider.cpp
source/providers/memory_provider.cpp
source/providers/undo/stack.cpp
source/ui/imgui_imhex_extensions.cpp
source/ui/view.cpp
source/ui/popup.cpp
source/ui/toast.cpp
source/ui/banner.cpp
source/subcommands/subcommands.cpp
)
if (APPLE)
set(OSX_SDK_PATH /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.sdk)
if (NOT CMAKE_OSX_SYSROOT)
if (IS_DIRECTORY ${OSX_SDK_PATH})
set(CMAKE_OSX_SYSROOT ${OSX_SDK_PATH})
else ()
message(WARNING "CMAKE_OSX_SYSROOT not set and macOS SDK not found! Using default one.")
endif ()
endif ()
set(LIBIMHEX_SOURCES ${LIBIMHEX_SOURCES}
source/helpers/utils_macos.m
source/helpers/macos_menu.m
)
endif ()
if (IMHEX_EXTERNAL_PLUGIN_BUILD)
add_library(libimhex IMPORTED SHARED GLOBAL)
set(LIBIMHEX_LIBRARY_TYPE INTERFACE)
else()
if (IMHEX_STATIC_LINK_PLUGINS)
add_library(libimhex STATIC ${LIBIMHEX_SOURCES})
else()
add_library(libimhex SHARED ${LIBIMHEX_SOURCES})
endif()
if (IMHEX_ENABLE_CXX_MODULES)
target_sources(libimhex
PUBLIC
FILE_SET cxx_modules TYPE CXX_MODULES
FILES
include/hex.cppm
)
endif()
set(LIBIMHEX_LIBRARY_TYPE PUBLIC)
target_compile_definitions(libimhex PRIVATE IMHEX_PROJECT_NAME="${PROJECT_NAME}")
endif()
if (DEFINED IMHEX_COMMIT_HASH_LONG AND DEFINED IMHEX_COMMIT_BRANCH)
set(GIT_COMMIT_HASH_LONG "${IMHEX_COMMIT_HASH_LONG}")
set(GIT_BRANCH "${IMHEX_COMMIT_BRANCH}")
else()
# Get the current working branch
execute_process(
COMMAND git rev-parse --abbrev-ref HEAD
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
OUTPUT_VARIABLE GIT_BRANCH
OUTPUT_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE RESULT_BRANCH
ERROR_QUIET
)
execute_process(
COMMAND git log -1 --format=%H
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
OUTPUT_VARIABLE GIT_COMMIT_HASH_LONG
OUTPUT_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE RESULT_HASH_LONG
ERROR_QUIET
)
endif ()
if (GIT_COMMIT_HASH_LONG STREQUAL "" OR GIT_BRANCH STREQUAL "")
message(WARNING "Failed to to determine commit hash/branch")
else()
addDefineToSource(source/api/imhex_api.cpp "GIT_COMMIT_HASH_LONG=\"${GIT_COMMIT_HASH_LONG}\"")
addDefineToSource(source/api/imhex_api.cpp "GIT_BRANCH=\"${GIT_BRANCH}\"")
endif ()
addDefineToSource(source/api/imhex_api.cpp "IMHEX_VERSION=\"${IMHEX_VERSION_STRING}\"")
enableUnityBuild(libimhex)
setupCompilerFlags(libimhex)
include(GenerateExportHeader)
generate_export_header(libimhex)
target_include_directories(libimhex ${LIBIMHEX_LIBRARY_TYPE} include ${XDGPP_INCLUDE_DIRS} ${LLVM_INCLUDE_DIRS} ${FMT_INCLUDE_DIRS})
if (NOT IMHEX_EXTERNAL_PLUGIN_BUILD)
if (WIN32)
set_target_properties(libimhex PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
if (NOT MSVC)
target_link_options(libimhex PRIVATE -Wl,--export-all-symbols)
endif()
target_link_libraries(libimhex PRIVATE Netapi32.lib)
target_compile_definitions(libimhex PRIVATE EXPORT_SYMBOLS=1)
elseif (APPLE)
find_library(FOUNDATION NAMES Foundation)
target_link_libraries(libimhex PUBLIC ${FOUNDATION})
endif ()
target_link_libraries(libimhex PRIVATE libpl microtar ${NFD_LIBRARIES} magic)
target_link_libraries(libimhex PUBLIC libwolv libpl_includes libpl-gen ${IMGUI_LIBRARIES} ${JTHREAD_LIBRARIES})
if (NOT WIN32)
target_link_libraries(libimhex PRIVATE dl)
endif()
if (NOT EMSCRIPTEN)
# curl is only used in non-emscripten builds
target_link_libraries(libimhex ${LIBIMHEX_LIBRARY_TYPE} CURL::libcurl)
endif()
target_include_directories(libimhex ${LIBIMHEX_LIBRARY_TYPE} ${MBEDTLS_INCLUDE_DIR} ${LIBBACKTRACE_INCLUDE_DIRS} ${MAGIC_INCLUDE_DIRS})
target_link_libraries(libimhex ${LIBIMHEX_LIBRARY_TYPE} ${MBEDTLS_LIBRARIES})
target_link_directories(libimhex ${LIBIMHEX_LIBRARY_TYPE} ${MBEDTLS_LIBRARY_DIR} ${MAGIC_LIBRARY_DIRS})
precompileHeaders(libimhex "${CMAKE_CURRENT_SOURCE_DIR}/include")
endif()
target_link_libraries(libimhex ${LIBIMHEX_LIBRARY_TYPE} ${NLOHMANN_JSON_LIBRARIES} imgui_all_includes ${FMT_LIBRARIES} ${LUNASVG_LIBRARIES} ${BOOST_LIBRARIES})
set_property(TARGET libimhex PROPERTY INTERPROCEDURAL_OPTIMIZATION FALSE)
add_dependencies(imhex_all libimhex)
install(FILES "$<TARGET_FILE:libimhex>" DESTINATION "${CMAKE_INSTALL_LIBDIR}" PERMISSIONS ${LIBRARY_PERMISSIONS})
set_target_properties(libimhex PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
set_target_properties(libimhex PROPERTIES PREFIX "")