31 lines
1003 B
CMake
31 lines
1003 B
CMake
if(NOT DEFINED INPUT OR NOT DEFINED OUTPUT OR NOT DEFINED SYMBOL)
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message(FATAL_ERROR "embed_spirv.cmake requires INPUT, OUTPUT, and SYMBOL")
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endif()
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file(READ "${INPUT}" bytes HEX)
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string(LENGTH "${bytes}" length)
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math(EXPR remainder "${length} % 8")
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if(NOT remainder EQUAL 0)
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message(FATAL_ERROR "SPIR-V byte count is not a multiple of four: ${INPUT}")
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endif()
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set(contents "#pragma once\n#include <cstdint>\ninline constexpr uint32_t ${SYMBOL}[] = {\n")
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set(column 0)
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while(length GREATER 0)
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string(SUBSTRING "${bytes}" 0 8 word)
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string(SUBSTRING "${word}" 0 2 b0)
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string(SUBSTRING "${word}" 2 2 b1)
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string(SUBSTRING "${word}" 4 2 b2)
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string(SUBSTRING "${word}" 6 2 b3)
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string(APPEND contents "0x${b3}${b2}${b1}${b0}u,")
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math(EXPR column "${column} + 1")
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if(column EQUAL 8)
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string(APPEND contents "\n")
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set(column 0)
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endif()
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string(SUBSTRING "${bytes}" 8 -1 bytes)
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math(EXPR length "${length} - 8")
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endwhile()
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string(APPEND contents "\n};\n")
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file(WRITE "${OUTPUT}" "${contents}")
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