mirror of
https://github.com/Pixelplanet/Pixel-VR-Player.git
synced 2026-10-20 05:01:15 +02:00
59 lines
1.9 KiB
CMake
59 lines
1.9 KiB
CMake
# Compiles GLSL shaders to SPIR-V at build time.
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#
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# Prefers `glslc` (from shaderc / Vulkan SDK); falls back to `glslangValidator`.
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#
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# Usage:
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# pixelvr_compile_shaders(<target>
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# OUTPUT_DIR <dir>
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# SOURCES <shader1> <shader2> ...)
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#
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# Produces "<OUTPUT_DIR>/<name>.spv" for each source and a custom target that
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# other targets can depend on.
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find_program(PIXELVR_GLSLC glslc HINTS "$ENV{VULKAN_SDK}/bin")
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find_program(PIXELVR_GLSLANG glslangValidator HINTS "$ENV{VULKAN_SDK}/bin")
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if(NOT PIXELVR_GLSLC AND NOT PIXELVR_GLSLANG)
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message(FATAL_ERROR
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"No GLSL compiler found. Install 'glslc' (shaderc) or 'glslang-tools'.")
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endif()
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function(pixelvr_compile_shaders TARGET_NAME)
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cmake_parse_arguments(ARG "" "OUTPUT_DIR" "SOURCES" ${ARGN})
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if(NOT ARG_OUTPUT_DIR)
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message(FATAL_ERROR "pixelvr_compile_shaders: OUTPUT_DIR is required")
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endif()
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file(MAKE_DIRECTORY "${ARG_OUTPUT_DIR}")
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set(_spv_outputs "")
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foreach(_src ${ARG_SOURCES})
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get_filename_component(_name "${_src}" NAME)
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set(_out "${ARG_OUTPUT_DIR}/${_name}.spv")
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set(_abs "${CMAKE_CURRENT_SOURCE_DIR}/${_src}")
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if(PIXELVR_GLSLC)
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add_custom_command(
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OUTPUT "${_out}"
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COMMAND "${PIXELVR_GLSLC}" -O --target-env=vulkan1.1
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"${_abs}" -o "${_out}"
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DEPENDS "${_abs}"
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COMMENT "glslc ${_src}"
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VERBATIM)
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else()
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add_custom_command(
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OUTPUT "${_out}"
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COMMAND "${PIXELVR_GLSLANG}" -V --target-env vulkan1.1
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"${_abs}" -o "${_out}"
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DEPENDS "${_abs}"
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COMMENT "glslangValidator ${_src}"
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VERBATIM)
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endif()
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list(APPEND _spv_outputs "${_out}")
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endforeach()
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add_custom_target(${TARGET_NAME} DEPENDS ${_spv_outputs})
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endfunction()
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