1 files changed, 57 insertions, 0 deletions
diff --git a/CMakeModules/Shaders.cmake b/CMakeModules/Shaders.cmake
new file mode 100644
index 0000000..c7f0e57
--- /dev/null
+++ b/CMakeModules/Shaders.cmake
@@ -0,0 +1,57 @@
+# CMake script file to process a GLSL source file, so it can be included
+# in C array and compiled in to an application.
+
+# number of input files
+list( LENGTH inputFiles shadersNumber ) 
+
+# check if GLSL source files were updated since the last time
+set( update "FALSE" )
+foreach( inputFile ${inputFiles} )
+    if( ${inputFile} IS_NEWER_THAN ${outputFile} )
+        set( update "TRUE" )
+    endif( ${inputFile} IS_NEWER_THAN ${outputFile} )
+endforeach( inputFile ${inputFiles} )
+
+if( NOT update )
+    message( "Headers are up-to-date" )
+    return()
+endif( NOT update )
+
+# write header
+file( WRITE ${outputFile} "// Do not edit this file, it is autogenerated by CMake.
+
+#ifndef SHADER_SRC_H
+#define SHADER_SRC_H
+
+const unsigned int shaders_number = ${shadersNumber};
+const char* shaders_src[] = 
+{\n" )
+
+foreach( inputFile ${inputFiles} )
+    # put the input file name into the output file
+    file( APPEND ${outputFile} "\n// ${inputFile}" )
+
+    # process the input file
+    file( READ ${inputFile} contents )
+
+    # remove /* */ comments
+    string( REGEX REPLACE "/\\*.*\\*/" "" contents "${contents}" )
+    # remove // comments
+    string( REGEX REPLACE "//[^\n]*" "" contents "${contents}" )
+    # remove whitespaces at the beginning of each line
+    string( REGEX REPLACE "\n([\t ])*" "\n" contents "${contents}" )
+    # remove unnecessary spaces
+    string( REGEX REPLACE " *([\\*/+&\\|,=<>\(\)]) *" "\\1" contents "${contents}" )
+    # remove empty lines & wrap every line in "" and add '\n' at the end of each line	
+    string( REGEX REPLACE "\n+" "\\\\n\"\n\"" contents "${contents}" )
+    # remove unnecessary " & \n from the beginning and the end of contents
+    string( REGEX REPLACE "^\\\\n\"" "" contents "${contents}" )
+    string( REGEX REPLACE "\"$" "," contents "${contents}" )
+
+    file( APPEND ${outputFile} "${contents}" )
+endforeach( inputFile ${inputFiles} )
+
+# write footer
+file( APPEND ${outputFile} "};
+#endif /* SHADER_SRC_H */" )
+