change Doxyfile.in

docs/Doxyfile.in

@@ -732,7 +732,7 @@ WARN_LOGFILE           =
 # spaces.
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = @CMAKE_CURRENT_SOURCE_DIR@/gpuapp @CMAKE_CURRENT_SOURCE_DIR@/gpulib
+INPUT                  = @CMAKE_CURRENT_SOURCE_DIR@/interface  @CMAKE_CURRENT_SOURCE_DIR@/kernel @CMAKE_CURRENT_SOURCE_DIR@/example
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
@@ -752,7 +752,7 @@ INPUT_ENCODING         = UTF-8
 # *.md, *.mm, *.dox, *.py, *.f90, *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf,
 # *.qsf, *.as and *.js.
 
-FILE_PATTERNS          = *.cu *.cpp *.h
+FILE_PATTERNS          = *.cu *.cpp *.h *.cxx
 # The RECURSIVE tag can be used to specify whether or not subdirectories should
 # be searched for input files as well.
 # The default value is: NO.