Add folders to CMakeLists.txt for supporting generators and IDEs

Samples/CMakeLists.txt

@@ -1,11 +1,33 @@
+# This layer of CMakeLists.txt adds folders, for better organization in Visual Studio
+# and other IDEs that support this feature.
+
+set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+
+set(CMAKE_FOLDER "0_Introduction")
 add_subdirectory(0_Introduction)
+
+set(CMAKE_FOLDER "1_Utilities")
 add_subdirectory(1_Utilities)
+
+set(CMAKE_FOLDER "2_Concepts_and_Techniques")
 add_subdirectory(2_Concepts_and_Techniques)
+
+set(CMAKE_FOLDER "3_CUDA_Features")
 add_subdirectory(3_CUDA_Features)
+
+set(CMAKE_FOLDER "4_CUDA_Libraries")
 add_subdirectory(4_CUDA_Libraries)
+
+set(CMAKE_FOLDER "5_Domain_Specific")
 add_subdirectory(5_Domain_Specific)
+
+set(CMAKE_FOLDER "6_Performance")
 add_subdirectory(6_Performance)
+
+set(CMAKE_FOLDER "7_libNVVM")
 add_subdirectory(7_libNVVM)
+
 if(BUILD_TEGRA)
+    set(CMAKE_FOLDER "8_Platform_Specific/Tegra")
     add_subdirectory(8_Platform_Specific/Tegra)
 endif()