Update URHO3D_SSE to denote SSE2.

CMake/Modules/Urho3D-CMake-common.cmake

@@ -514,10 +514,10 @@ if (MSVC)
     set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${DEBUG_RUNTIME}")
     set (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELEASE} ${RELEASE_RUNTIME} /fp:fast /Zi /GS- /D _SECURE_SCL=0")
     set (CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELWITHDEBINFO})
-    # SSE flag is redundant if already compiling as 64bit
+    # In Visual Studio, SSE2 flag is redundant if already compiling as 64bit.
     if (URHO3D_SSE AND NOT URHO3D_64BIT)
-        set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /arch:SSE")
-        set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE")
+        set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /arch:SSE2")
+        set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2")
     endif ()
     set (CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /OPT:REF /OPT:ICF /DEBUG")
     set (CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /OPT:REF /OPT:ICF")
@@ -554,8 +554,8 @@ else ()
             else ()
                 set (DASH_MBIT -m32)
                 if (URHO3D_SSE)
-                    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse")
-                    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse")
+                    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse2")
+                    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2")
                 endif ()
             endif ()
             if (NOT URHO3D_NOABI)

Docs/GettingStarted.dox

@@ -91,7 +91,7 @@ A number of build options can be defined when invoking the build scripts or when
 |URHO3D_PCH           |1|Enable PCH support|
 |URHO3D_DATABASE_ODBC |0|Enable Database support with ODBC, requires vendor-specific ODBC driver|
 |URHO3D_DATABASE_SQLITE|0|Enable Database support with SQLite embedded|
-|URHO3D_SSE           |1|Enable SSE instruction set (Intel platform only including Android on Intel Atom)|
+|URHO3D_SSE           |1|Enable SSE2 instruction set (Intel platform only including Android on Intel Atom)|
 |URHO3D_MINIDUMPS     |1|Enable minidumps on crash (VS only)|
 |URHO3D_FILEWATCHER   |1|Enable filewatcher support|
 |URHO3D_PACKAGING     |*|Enable resources packaging support, on Emscripten default to 1, on other platforms default to 0|