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https://github.com/Qz3rK/tdesktop.git
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23rd
85 lines
2.7 KiB
CMake
85 lines
2.7 KiB
CMake
# Compile QRhi shaders (.vert/.frag/.comp -> .qsb) at build time.
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#
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# Usage: include(cmake/qrhi_shaders.cmake)
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# Requires: target "Telegram" and function "nice_target_sources" to exist.
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if (NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/shaders")
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return()
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endif()
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if (QT_VERSION_MAJOR LESS 6)
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return()
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endif()
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find_program(QSB_EXECUTABLE qsb
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HINTS
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"${QT_DIR}/../../../libexec"
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"${QT_DIR}/../../../bin"
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"${QT_DIR}/../../qt6/libexec"
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"${QT_DIR}/../../qt6/bin"
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"${QT_DIR}/../../../opt/qtshadertools/bin"
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PATHS ENV PATH)
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if (NOT QSB_EXECUTABLE)
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message(FATAL_ERROR
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"QSB (Qt Shader Baker) was not found, but ${CMAKE_CURRENT_SOURCE_DIR}/shaders "
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"is present and must be compiled. Install Qt's shader tools or extend "
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"QSB_EXECUTABLE hints in cmake/qrhi_shaders.cmake.")
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endif()
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set(_shader_dir "${CMAKE_CURRENT_SOURCE_DIR}/shaders")
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set(_qsb_out_dir "${CMAKE_CURRENT_BINARY_DIR}/shaders")
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file(MAKE_DIRECTORY ${_qsb_out_dir})
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file(GLOB _shader_sources
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"${_shader_dir}/*.vert"
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"${_shader_dir}/*.frag"
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"${_shader_dir}/*.comp")
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set(_qsb_outputs)
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set(_qrc_entries)
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foreach(_src ${_shader_sources})
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get_filename_component(_name ${_src} NAME)
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get_filename_component(_ext ${_src} LAST_EXT)
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set(_qsb "${_qsb_out_dir}/${_name}.qsb")
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if("${_ext}" STREQUAL ".comp")
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set(_glsl_ver "310es,430")
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else()
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set(_glsl_ver "100es,120,150")
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endif()
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add_custom_command(
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OUTPUT ${_qsb}
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COMMAND ${QSB_EXECUTABLE}
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--glsl "${_glsl_ver}"
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--hlsl 50
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--msl 12
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-o ${_qsb}
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${_src}
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DEPENDS ${_src}
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COMMENT "QSB: ${_name}"
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VERBATIM)
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list(APPEND _qsb_outputs ${_qsb})
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list(APPEND _qrc_entries " <file>${_name}.qsb</file>")
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endforeach()
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list(SORT _qrc_entries)
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list(JOIN _qrc_entries "\n" _qrc_body)
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# Write shaders.qrc at configure time (so AUTORCC can scan its INPUTS) but
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# only touch the file when content actually changes — otherwise AUTORCC sees
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# a fresh mtime on every cmake re-generate and re-runs rcc unnecessarily.
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set(_qrc_path "${_qsb_out_dir}/shaders.qrc")
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set(_qrc_new "<RCC>\n <qresource prefix=\"/shaders\">\n${_qrc_body}\n </qresource>\n</RCC>\n")
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set(_qrc_old "")
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if (EXISTS "${_qrc_path}")
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file(READ "${_qrc_path}" _qrc_old)
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endif()
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if (NOT "${_qrc_new}" STREQUAL "${_qrc_old}")
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file(WRITE "${_qrc_path}" "${_qrc_new}")
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endif()
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add_custom_target(compile_shaders DEPENDS ${_qsb_outputs})
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nice_target_sources(Telegram ${_qsb_out_dir}
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PRIVATE
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shaders.qrc
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)
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add_dependencies(Telegram compile_shaders)
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message(STATUS "QSB: found ${QSB_EXECUTABLE}, will compile ${_shader_dir}/*.vert/*.frag/*.comp")
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