57 lines
1.9 KiB
CMake
57 lines
1.9 KiB
CMake
# CMake script file to process a GLSL source file, so it can be included
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# in C array and compiled in to an application.
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# number of input files
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list( LENGTH inputFiles shadersNumber )
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# check if GLSL source files were updated since the last time
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set( update "FALSE" )
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foreach( inputFile ${inputFiles} )
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if( ${inputFile} IS_NEWER_THAN ${outputFile} )
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set( update "TRUE" )
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endif( ${inputFile} IS_NEWER_THAN ${outputFile} )
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endforeach( inputFile ${inputFiles} )
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if( NOT update )
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message( "Headers are up-to-date" )
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return()
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endif( NOT update )
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# write header
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file( WRITE ${outputFile} "// Do not edit this file, it is autogenerated by CMake.
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#ifndef SHADER_SRC_H
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#define SHADER_SRC_H
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const unsigned int shaders_number = ${shadersNumber};
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const char *shaders_src[] = {\n" )
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foreach( inputFile ${inputFiles} )
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# put the input file name into the output file
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file( APPEND ${outputFile} "\n// ${inputFile}" )
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# process the input file
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file( READ ${inputFile} contents )
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# remove /* */ comments
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string( REGEX REPLACE "/\\*.*\\*/" "" contents "${contents}" )
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# remove // comments
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string( REGEX REPLACE "//[^\n]*" "" contents "${contents}" )
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# remove whitespaces at the beginning of each line
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string( REGEX REPLACE "\n([\t ])*" "\n" contents "${contents}" )
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# remove unnecessary spaces
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string( REGEX REPLACE " *([\\*/+&\\|,=<>\(\)]) *" "\\1" contents "${contents}" )
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# remove empty lines & wrap every line in "" and add '\n' at the end of each line
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string( REGEX REPLACE "\n+" "\\\\n\"\n\"" contents "${contents}" )
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# remove unnecessary " & \n from the beginning and the end of contents
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string( REGEX REPLACE "^\\\\n\"" "" contents "${contents}" )
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string( REGEX REPLACE "\"$" "," contents "${contents}" )
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file( APPEND ${outputFile} "${contents}" )
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endforeach( inputFile ${inputFiles} )
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# write footer
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file( APPEND ${outputFile} "};
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#endif /* SHADER_SRC_H */" )
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