From 0cf93f0ca314c999b9fe6c8de429ede6a1a57d01 Mon Sep 17 00:00:00 2001
From: Edward Rudd <urkle@outoforder.cc>
Date: Tue, 09 Apr 2019 02:18:44 +0000
Subject: [PATCH] update to SDL2 2.0.9

---
 include/SDL2/SDL_events.h         |   34 +
 include/SDL2/SDL_gamecontroller.h |   28 +
 include/SDL2/SDL_joystick.h       |   34 +
 include/SDL2/SDL_copying.h        |    2 
 include/SDL2/SDL_stdinc.h         |   48 +-
 include/SDL2/SDL_hints.h          |  115 +++++
 include/SDL2/SDL_sensor.h         |  251 ++++++++++++
 win32/lib64/SDL2.lib              |    0 
 include/SDL2/SDL_vulkan.h         |   17 
 include/SDL2/SDL_config.h         |   10 
 include/SDL2/SDL_config_macosx.h  |    6 
 osx/libSDL2.dylib                 |    0 
 win32/lib/SDL2.dll                |    0 
 include/SDL2/SDL_haptic.h         |   17 
 include/SDL2/SDL_video.h          |   51 +
 include/SDL2/SDL.h                |    4 
 win32/lib/SDL2main.lib            |    0 
 win32/lib64/SDL2main.lib          |    0 
 include/SDL2/SDL_config_windows.h |   96 +++-
 include/SDL2/SDL_system.h         |   32 +
 SDL2ConfigVersion.cmake           |    2 
 include/SDL2/SDL_audio.h          |    3 
 README.md                         |    4 
 win32/lib64/SDL2.dll              |    0 
 win32/lib/SDL2.lib                |    0 
 /dev/null                         |  359 -----------------
 include/SDL2/SDL_thread.h         |   41 +
 include/SDL2/SDL_version.h        |    2 
 include/SDL2/SDL_syswm.h          |   12 
 include/SDL2/SDL_surface.h        |    7 
 include/SDL2/SDL_cpuinfo.h        |   13 
 31 files changed, 727 insertions(+), 461 deletions(-)

diff --git a/README.md b/README.md
index 99383b9..b997db6 100644
--- a/README.md
+++ b/README.md
@@ -6,12 +6,12 @@
 ## OS Targets
 
 ### Windows
-Build via Visual Studio 2013
+Build via Visual Studio 2015
 They run in Windows XP and newer, 32bit and 64bit.
 
 ### Mac OS X
 Built via the Xcode project, dylib ONLY
-Mac OS X 10.6 32bit and 64bit.
+Mac OS X 10.7+ 64bit only.
 
 ### Linux
 Built via the configure script
diff --git a/SDL2ConfigVersion.cmake b/SDL2ConfigVersion.cmake
index 2a52470..5abb190 100644
--- a/SDL2ConfigVersion.cmake
+++ b/SDL2ConfigVersion.cmake
@@ -1,4 +1,4 @@
-set(PACKAGE_VERSION "2.0.8")
+set(PACKAGE_VERSION "2.0.9")
 
 # Check whether the requested PACKAGE_FIND_VERSION is compatible
 if("${PACKAGE_VERSION}" VERSION_LESS "${PACKAGE_FIND_VERSION}")
diff --git a/include/SDL2/SDL.h b/include/SDL2/SDL.h
index d48d9d4..fc35a41 100644
--- a/include/SDL2/SDL.h
+++ b/include/SDL2/SDL.h
@@ -51,6 +51,7 @@
 #include "SDL_power.h"
 #include "SDL_render.h"
 #include "SDL_rwops.h"
+#include "SDL_sensor.h"
 #include "SDL_shape.h"
 #include "SDL_system.h"
 #include "SDL_thread.h"
@@ -80,10 +81,11 @@
 #define SDL_INIT_HAPTIC         0x00001000u
 #define SDL_INIT_GAMECONTROLLER 0x00002000u  /**< SDL_INIT_GAMECONTROLLER implies SDL_INIT_JOYSTICK */
 #define SDL_INIT_EVENTS         0x00004000u
+#define SDL_INIT_SENSOR         0x00008000u
 #define SDL_INIT_NOPARACHUTE    0x00100000u  /**< compatibility; this flag is ignored. */
 #define SDL_INIT_EVERYTHING ( \
                 SDL_INIT_TIMER | SDL_INIT_AUDIO | SDL_INIT_VIDEO | SDL_INIT_EVENTS | \
-                SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_GAMECONTROLLER \
+                SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_GAMECONTROLLER | SDL_INIT_SENSOR \
             )
 /* @} */
 
diff --git a/include/SDL2/SDL_audio.h b/include/SDL2/SDL_audio.h
index d6ea689..d3e1bfa 100644
--- a/include/SDL2/SDL_audio.h
+++ b/include/SDL2/SDL_audio.h
@@ -140,7 +140,8 @@
 #define SDL_AUDIO_ALLOW_FREQUENCY_CHANGE    0x00000001
 #define SDL_AUDIO_ALLOW_FORMAT_CHANGE       0x00000002
 #define SDL_AUDIO_ALLOW_CHANNELS_CHANGE     0x00000004
-#define SDL_AUDIO_ALLOW_ANY_CHANGE          (SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_FORMAT_CHANGE|SDL_AUDIO_ALLOW_CHANNELS_CHANGE)
+#define SDL_AUDIO_ALLOW_SAMPLES_CHANGE      0x00000008
+#define SDL_AUDIO_ALLOW_ANY_CHANGE          (SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_FORMAT_CHANGE|SDL_AUDIO_ALLOW_CHANNELS_CHANGE|SDL_AUDIO_ALLOW_SAMPLES_CHANGE)
 /* @} */
 
 /* @} *//* Audio flags */
diff --git a/include/SDL2/SDL_config.h b/include/SDL2/SDL_config.h
index c37d0b4..af70504 100644
--- a/include/SDL2/SDL_config.h
+++ b/include/SDL2/SDL_config.h
@@ -19,8 +19,8 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 
-#ifndef SDL_config_h
-#define SDL_config_h
+#ifndef SDL_config_h_
+#define SDL_config_h_
 
 #include "SDL_platform.h"
 
@@ -41,12 +41,14 @@
 #include "SDL_config_android.h"
 #elif defined(__PSP__)
 #include "SDL_config_psp.h"
+#elif defined(__OS2__)
+#include "SDL_config_os2.h"
 #elif defined(__linux__)
 #include "SDL_config_linux.h"
 #elif defined(EMSCRIPTEN)
 #include "SDL_config_emscripten.h"
 #else
-/* This is a minimal configuration just to get SDL running on new platforms */
+/* This is a minimal configuration just to get SDL running on new platforms. */
 #include "SDL_config_minimal.h"
 #endif /* platform config */
 
@@ -54,4 +56,4 @@
 #error Wrong SDL_config.h, check your include path?
 #endif
 
-#endif /* SDL_config_h */
+#endif /* SDL_config_h_ */
diff --git a/include/SDL2/SDL_config_emscripten.h b/include/SDL2/SDL_config_emscripten.h
deleted file mode 100644
index 715940f..0000000
--- a/include/SDL2/SDL_config_emscripten.h
+++ /dev/null
@@ -1,359 +0,0 @@
-/* include/SDL_config.h.  Generated from SDL_config.h.in by configure.  */
-/*
-  Simple DirectMedia Layer
-  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the authors be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely, subject to the following restrictions:
-
-  1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-  2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-  3. This notice may not be removed or altered from any source distribution.
-*/
-
-#ifndef _SDL_config_emscripten_h
-#define _SDL_config_emscripten_h
-
-/**
- *  \file SDL_config.h.in
- *
- *  This is a set of defines to configure the SDL features
- */
-
-/* General platform specific identifiers */
-#include "SDL_platform.h"
-
-/* Make sure that this isn't included by Visual C++ */
-#ifdef _MSC_VER
-#error You should run hg revert SDL_config.h 
-#endif
-
-/* C language features */
-/* #undef const */
-/* #undef inline */
-/* #undef volatile */
-
-/* C datatypes */
-#ifdef __LP64__
-#define SIZEOF_VOIDP 8
-#else
-#define SIZEOF_VOIDP 4
-#endif
-#define HAVE_GCC_ATOMICS 1
-/* #undef HAVE_GCC_SYNC_LOCK_TEST_AND_SET */
-
-/* #undef HAVE_DDRAW_H */
-/* #undef HAVE_DINPUT_H */
-/* #undef HAVE_DSOUND_H */
-/* #undef HAVE_DXGI_H */
-/* #undef HAVE_XINPUT_H */
-
-/* Comment this if you want to build without any C library requirements */
-#define HAVE_LIBC 1
-#if HAVE_LIBC
-
-/* Useful headers */
-#define HAVE_ALLOCA_H 1
-#define HAVE_SYS_TYPES_H 1
-#define HAVE_STDIO_H 1
-#define STDC_HEADERS 1
-#define HAVE_STDLIB_H 1
-#define HAVE_STDARG_H 1
-#define HAVE_MALLOC_H 1
-#define HAVE_MEMORY_H 1
-#define HAVE_STRING_H 1
-#define HAVE_STRINGS_H 1
-#define HAVE_INTTYPES_H 1
-#define HAVE_STDINT_H 1
-#define HAVE_CTYPE_H 1
-#define HAVE_MATH_H 1
-#define HAVE_ICONV_H 1
-#define HAVE_SIGNAL_H 1
-/* #undef HAVE_ALTIVEC_H */
-/* #undef HAVE_PTHREAD_NP_H */
-/* #undef HAVE_LIBUDEV_H */
-/* #undef HAVE_DBUS_DBUS_H */
-/* #undef HAVE_IBUS_IBUS_H */
-
-/* C library functions */
-#define HAVE_MALLOC 1
-#define HAVE_CALLOC 1
-#define HAVE_REALLOC 1
-#define HAVE_FREE 1
-#define HAVE_ALLOCA 1
-#ifndef __WIN32__ /* Don't use C runtime versions of these on Windows */
-#define HAVE_GETENV 1
-#define HAVE_SETENV 1
-#define HAVE_PUTENV 1
-#define HAVE_UNSETENV 1
-#endif
-#define HAVE_QSORT 1
-#define HAVE_ABS 1
-#define HAVE_BCOPY 1
-#define HAVE_MEMSET 1
-#define HAVE_MEMCPY 1
-#define HAVE_MEMMOVE 1
-#define HAVE_MEMCMP 1
-#define HAVE_STRLEN 1
-#define HAVE_STRLCPY 1
-#define HAVE_STRLCAT 1
-#define HAVE_STRDUP 1
-/* #undef HAVE__STRREV */
-/* #undef HAVE__STRUPR */
-/* #undef HAVE__STRLWR */
-/* #undef HAVE_INDEX */
-/* #undef HAVE_RINDEX */
-#define HAVE_STRCHR 1
-#define HAVE_STRRCHR 1
-#define HAVE_STRSTR 1
-/* #undef HAVE_ITOA */
-/* #undef HAVE__LTOA */
-/* #undef HAVE__UITOA */
-/* #undef HAVE__ULTOA */
-#define HAVE_STRTOL 1
-#define HAVE_STRTOUL 1
-/* #undef HAVE__I64TOA */
-/* #undef HAVE__UI64TOA */
-#define HAVE_STRTOLL 1
-#define HAVE_STRTOULL 1
-#define HAVE_STRTOD 1
-#define HAVE_ATOI 1
-#define HAVE_ATOF 1
-#define HAVE_STRCMP 1
-#define HAVE_STRNCMP 1
-/* #undef HAVE__STRICMP */
-#define HAVE_STRCASECMP 1
-/* #undef HAVE__STRNICMP */
-#define HAVE_STRNCASECMP 1
-/* #undef HAVE_SSCANF */
-#define HAVE_VSSCANF 1
-/* #undef HAVE_SNPRINTF */
-#define HAVE_VSNPRINTF 1
-#define HAVE_M_PI /**/
-#define HAVE_ATAN 1
-#define HAVE_ATAN2 1
-#define HAVE_ACOS 1
-#define HAVE_ASIN 1
-#define HAVE_CEIL 1
-#define HAVE_COPYSIGN 1
-#define HAVE_COS 1
-#define HAVE_COSF 1
-#define HAVE_FABS 1
-#define HAVE_FLOOR 1
-#define HAVE_LOG 1
-#define HAVE_POW 1
-#define HAVE_SCALBN 1
-#define HAVE_SIN 1
-#define HAVE_SINF 1
-#define HAVE_SQRT 1
-#define HAVE_SQRTF 1
-#define HAVE_TAN 1
-#define HAVE_TANF 1
-#define HAVE_FSEEKO 1
-/* #undef HAVE_FSEEKO64 */
-#define HAVE_SIGACTION 1
-#define HAVE_SA_SIGACTION 1
-#define HAVE_SETJMP 1
-#define HAVE_NANOSLEEP 1
-#define HAVE_SYSCONF 1
-#define HAVE_SYSCTLBYNAME 1
-/* #undef HAVE_CLOCK_GETTIME */
-/* #undef HAVE_GETPAGESIZE */
-#define HAVE_MPROTECT 1
-#define HAVE_ICONV 1
-/* #undef HAVE_PTHREAD_SETNAME_NP */
-/* #undef HAVE_PTHREAD_SET_NAME_NP */
-/* #undef HAVE_SEM_TIMEDWAIT */
-
-#else
-#define HAVE_STDARG_H 1
-#define HAVE_STDDEF_H 1
-#define HAVE_STDINT_H 1
-#endif /* HAVE_LIBC */
-
-/* SDL internal assertion support */
-/* #undef SDL_DEFAULT_ASSERT_LEVEL */
-
-/* Allow disabling of core subsystems */
-#define SDL_ATOMIC_DISABLED 1
-/* #undef SDL_AUDIO_DISABLED */
-#define SDL_CPUINFO_DISABLED 1
-/* #undef SDL_EVENTS_DISABLED */
-/* #undef SDL_FILE_DISABLED */
-/* #undef SDL_JOYSTICK_DISABLED */
-#define SDL_HAPTIC_DISABLED 1
-#define SDL_LOADSO_DISABLED 1
-/* #undef SDL_RENDER_DISABLED */
-#define SDL_THREADS_DISABLED 1
-/* #undef SDL_TIMERS_DISABLED */
-/* #undef SDL_VIDEO_DISABLED */
-/* #undef SDL_POWER_DISABLED */
-/* #undef SDL_FILESYSTEM_DISABLED */
-
-/* Enable various audio drivers */
-/* #undef SDL_AUDIO_DRIVER_ALSA */
-/* #undef SDL_AUDIO_DRIVER_ALSA_DYNAMIC */
-/* #undef SDL_AUDIO_DRIVER_ARTS */
-/* #undef SDL_AUDIO_DRIVER_ARTS_DYNAMIC */
-/* #undef SDL_AUDIO_DRIVER_PULSEAUDIO */
-/* #undef SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC */
-/* #undef SDL_AUDIO_DRIVER_HAIKU */
-/* #undef SDL_AUDIO_DRIVER_BSD */
-/* #undef SDL_AUDIO_DRIVER_COREAUDIO */
-#define SDL_AUDIO_DRIVER_DISK 1
-#define SDL_AUDIO_DRIVER_DUMMY 1
-/* #undef SDL_AUDIO_DRIVER_ANDROID */
-/* #undef SDL_AUDIO_DRIVER_XAUDIO2 */
-/* #undef SDL_AUDIO_DRIVER_DSOUND */
-/* #undef SDL_AUDIO_DRIVER_ESD */
-/* #undef SDL_AUDIO_DRIVER_ESD_DYNAMIC */
-/* #undef SDL_AUDIO_DRIVER_NACL */
-/* #undef SDL_AUDIO_DRIVER_NAS */
-/* #undef SDL_AUDIO_DRIVER_NAS_DYNAMIC */
-/* #undef SDL_AUDIO_DRIVER_SNDIO */
-/* #undef SDL_AUDIO_DRIVER_SNDIO_DYNAMIC */
-/* #undef SDL_AUDIO_DRIVER_OSS */
-/* #undef SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H */
-/* #undef SDL_AUDIO_DRIVER_PAUDIO */
-/* #undef SDL_AUDIO_DRIVER_QSA */
-/* #undef SDL_AUDIO_DRIVER_SUNAUDIO */
-/* #undef SDL_AUDIO_DRIVER_WINMM */
-/* #undef SDL_AUDIO_DRIVER_FUSIONSOUND */
-/* #undef SDL_AUDIO_DRIVER_FUSIONSOUND_DYNAMIC */
-#define SDL_AUDIO_DRIVER_EMSCRIPTEN 1
-
-/* Enable various input drivers */
-/* #undef SDL_INPUT_LINUXEV */
-/* #undef SDL_INPUT_LINUXKD */
-/* #undef SDL_INPUT_TSLIB */
-/* #undef SDL_JOYSTICK_HAIKU */
-/* #undef SDL_JOYSTICK_DINPUT */
-/* #undef SDL_JOYSTICK_XINPUT */
-/* #undef SDL_JOYSTICK_DUMMY */
-/* #undef SDL_JOYSTICK_IOKIT */
-/* #undef SDL_JOYSTICK_LINUX */
-/* #undef SDL_JOYSTICK_ANDROID */
-/* #undef SDL_JOYSTICK_WINMM */
-/* #undef SDL_JOYSTICK_USBHID */
-/* #undef SDL_JOYSTICK_USBHID_MACHINE_JOYSTICK_H */
-#define SDL_JOYSTICK_EMSCRIPTEN 1
-/* #undef SDL_HAPTIC_DUMMY */
-/* #undef SDL_HAPTIC_LINUX */
-/* #undef SDL_HAPTIC_IOKIT */
-/* #undef SDL_HAPTIC_DINPUT */
-/* #undef SDL_HAPTIC_XINPUT */
-
-/* Enable various shared object loading systems */
-/* #undef SDL_LOADSO_HAIKU */
-#define SDL_LOADSO_DLOPEN 1
-/* #undef SDL_LOADSO_DUMMY */
-/* #undef SDL_LOADSO_LDG */
-/* #undef SDL_LOADSO_WINDOWS */
-
-/* Enable various threading systems */
-/* #undef SDL_THREAD_PTHREAD */
-/* #undef SDL_THREAD_PTHREAD_RECURSIVE_MUTEX */
-/* #undef SDL_THREAD_PTHREAD_RECURSIVE_MUTEX_NP */
-/* #undef SDL_THREAD_WINDOWS */
-
-/* Enable various timer systems */
-/* #undef SDL_TIMER_HAIKU */
-/* #undef SDL_TIMER_DUMMY */
-#define SDL_TIMER_UNIX 1
-/* #undef SDL_TIMER_WINDOWS */
-
-/* Enable various video drivers */
-/* #undef SDL_VIDEO_DRIVER_HAIKU */
-/* #undef SDL_VIDEO_DRIVER_COCOA */
-/* #undef SDL_VIDEO_DRIVER_DIRECTFB */
-/* #undef SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC */
-#define SDL_VIDEO_DRIVER_DUMMY 1
-/* #undef SDL_VIDEO_DRIVER_WINDOWS */
-/* #undef SDL_VIDEO_DRIVER_WAYLAND */
-/* #undef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
-/* #undef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC */
-/* #undef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL */
-/* #undef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR */
-/* #undef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON */
-/* #undef SDL_VIDEO_DRIVER_MIR */
-/* #undef SDL_VIDEO_DRIVER_MIR_DYNAMIC */
-/* #undef SDL_VIDEO_DRIVER_MIR_DYNAMIC_XKBCOMMON */
-/* #undef SDL_VIDEO_DRIVER_X11 */
-/* #undef SDL_VIDEO_DRIVER_RPI */
-/* #undef SDL_VIDEO_DRIVER_ANDROID */
-#define SDL_VIDEO_DRIVER_EMSCRIPTEN 1
-/* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC */
-/* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT */
-/* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR */
-/* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA */
-/* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2 */
-/* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR */
-/* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS */
-/* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE */
-/* #undef SDL_VIDEO_DRIVER_X11_XCURSOR */
-/* #undef SDL_VIDEO_DRIVER_X11_XINERAMA */
-/* #undef SDL_VIDEO_DRIVER_X11_XINPUT2 */
-/* #undef SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH */
-/* #undef SDL_VIDEO_DRIVER_X11_XRANDR */
-/* #undef SDL_VIDEO_DRIVER_X11_XSCRNSAVER */
-/* #undef SDL_VIDEO_DRIVER_X11_XSHAPE */
-/* #undef SDL_VIDEO_DRIVER_X11_XVIDMODE */
-/* #undef SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS */
-/* #undef SDL_VIDEO_DRIVER_X11_CONST_PARAM_XDATA32 */
-/* #undef SDL_VIDEO_DRIVER_X11_CONST_PARAM_XEXTADDDISPLAY */
-/* #undef SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM */
-/* #undef SDL_VIDEO_DRIVER_NACL */
-/* #undef SDL_VIDEO_DRIVER_VIVANTE */
-/* #undef SDL_VIDEO_DRIVER_VIVANTE_VDK */
-
-/* #undef SDL_VIDEO_RENDER_D3D */
-/* #undef SDL_VIDEO_RENDER_D3D11 */
-/* #undef SDL_VIDEO_RENDER_OGL */
-/* #undef SDL_VIDEO_RENDER_OGL_ES */
-#define SDL_VIDEO_RENDER_OGL_ES2 1
-/* #undef SDL_VIDEO_RENDER_DIRECTFB */
-
-/* Enable OpenGL support */
-/* #undef SDL_VIDEO_OPENGL */
-/* #undef SDL_VIDEO_OPENGL_ES */
-#define SDL_VIDEO_OPENGL_ES2 1
-/* #undef SDL_VIDEO_OPENGL_BGL */
-/* #undef SDL_VIDEO_OPENGL_CGL */
-#define SDL_VIDEO_OPENGL_EGL 1
-/* #undef SDL_VIDEO_OPENGL_GLX */
-/* #undef SDL_VIDEO_OPENGL_WGL */
-/* #undef SDL_VIDEO_OPENGL_OSMESA */
-/* #undef SDL_VIDEO_OPENGL_OSMESA_DYNAMIC */
-
-/* Enable system power support */
-/* #undef SDL_POWER_LINUX */
-/* #undef SDL_POWER_WINDOWS */
-/* #undef SDL_POWER_MACOSX */
-/* #undef SDL_POWER_HAIKU */
-/* #undef SDL_POWER_ANDROID */
-#define SDL_POWER_EMSCRIPTEN 1
-/* #undef SDL_POWER_HARDWIRED */
-
-/* Enable system filesystem support */
-/* #undef SDL_FILESYSTEM_HAIKU */
-/* #undef SDL_FILESYSTEM_COCOA */
-/* #undef SDL_FILESYSTEM_DUMMY */
-/* #undef SDL_FILESYSTEM_UNIX */
-/* #undef SDL_FILESYSTEM_WINDOWS */
-/* #undef SDL_FILESYSTEM_NACL */
-#define SDL_FILESYSTEM_EMSCRIPTEN 1
-
-/* Enable assembly routines */
-/* #undef SDL_ASSEMBLY_ROUTINES */
-/* #undef SDL_ALTIVEC_BLITTERS */
-
-#endif /* _SDL_config_emscripten_h */
diff --git a/include/SDL2/SDL_config_macosx.h b/include/SDL2/SDL_config_macosx.h
index 29f583e..9ebd4a3 100644
--- a/include/SDL2/SDL_config_macosx.h
+++ b/include/SDL2/SDL_config_macosx.h
@@ -102,6 +102,8 @@
 #define HAVE_COPYSIGNF  1
 #define HAVE_COS    1
 #define HAVE_COSF   1
+#define HAVE_EXP    1
+#define HAVE_EXPF   1
 #define HAVE_FABS   1
 #define HAVE_FABSF  1
 #define HAVE_FLOOR  1
@@ -135,8 +137,12 @@
 
 /* Enable various input drivers */
 #define SDL_JOYSTICK_IOKIT  1
+#define SDL_JOYSTICK_HIDAPI  1
 #define SDL_HAPTIC_IOKIT    1
 
+/* Enable the dummy sensor driver */
+#define SDL_SENSOR_DUMMY  1
+
 /* Enable various shared object loading systems */
 #define SDL_LOADSO_DLOPEN   1
 
diff --git a/include/SDL2/SDL_config_windows.h b/include/SDL2/SDL_config_windows.h
index 890986c..c58be8e 100644
--- a/include/SDL2/SDL_config_windows.h
+++ b/include/SDL2/SDL_config_windows.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -19,8 +19,9 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 
-#ifndef _SDL_config_windows_h
-#define _SDL_config_windows_h
+#ifndef SDL_config_windows_h_
+#define SDL_config_windows_h_
+#define SDL_config_h_
 
 #include "SDL_platform.h"
 
@@ -81,16 +82,21 @@
 #define HAVE_DSOUND_H 1
 #define HAVE_DXGI_H 1
 #define HAVE_XINPUT_H 1
+#define HAVE_MMDEVICEAPI_H 1
+#define HAVE_AUDIOCLIENT_H 1
+#define HAVE_ENDPOINTVOLUME_H 1
 
 /* This is disabled by default to avoid C runtime dependencies and manifest requirements */
 #ifdef HAVE_LIBC
 /* Useful headers */
-#define HAVE_STDIO_H 1
 #define STDC_HEADERS 1
-#define HAVE_STRING_H 1
 #define HAVE_CTYPE_H 1
+#define HAVE_FLOAT_H 1
+#define HAVE_LIMITS_H 1
 #define HAVE_MATH_H 1
 #define HAVE_SIGNAL_H 1
+#define HAVE_STDIO_H 1
+#define HAVE_STRING_H 1
 
 /* C library functions */
 #define HAVE_MALLOC 1
@@ -106,13 +112,15 @@
 #define HAVE_MEMCMP 1
 #define HAVE_STRLEN 1
 #define HAVE__STRREV 1
-#define HAVE__STRUPR 1
-#define HAVE__STRLWR 1
+/* These functions have security warnings, so we won't use them */
+/* #undef HAVE__STRUPR */
+/* #undef HAVE__STRLWR */
 #define HAVE_STRCHR 1
 #define HAVE_STRRCHR 1
 #define HAVE_STRSTR 1
-#define HAVE__LTOA 1
-#define HAVE__ULTOA 1
+/* These functions have security warnings, so we won't use them */
+/* #undef HAVE__LTOA */
+/* #undef HAVE__ULTOA */
 #define HAVE_STRTOL 1
 #define HAVE_STRTOUL 1
 #define HAVE_STRTOD 1
@@ -122,28 +130,50 @@
 #define HAVE_STRNCMP 1
 #define HAVE__STRICMP 1
 #define HAVE__STRNICMP 1
-#define HAVE_ATAN 1
-#define HAVE_ATAN2 1
-#define HAVE_ACOS  1
-#define HAVE_ASIN  1
-#define HAVE_CEIL 1
-#define HAVE_COS 1
-#define HAVE_COSF 1
-#define HAVE_FABS 1
-#define HAVE_FLOOR 1
-#define HAVE_LOG 1
-#define HAVE_POW 1
-#define HAVE_SIN 1
-#define HAVE_SINF 1
-#define HAVE_SQRT 1
-#define HAVE_SQRTF 1
-#define HAVE_TAN 1
-#define HAVE_TANF 1
+#define HAVE_ACOS   1
+#define HAVE_ACOSF  1
+#define HAVE_ASIN   1
+#define HAVE_ASINF  1
+#define HAVE_ATAN   1
+#define HAVE_ATANF  1
+#define HAVE_ATAN2  1
+#define HAVE_ATAN2F 1
+#define HAVE_CEILF  1
+#define HAVE__COPYSIGN  1
+#define HAVE_COS    1
+#define HAVE_COSF   1
+#define HAVE_EXP    1
+#define HAVE_EXPF   1
+#define HAVE_FABS   1
+#define HAVE_FABSF  1
+#define HAVE_FLOOR  1
+#define HAVE_FLOORF 1
+#define HAVE_FMOD   1
+#define HAVE_FMODF  1
+#define HAVE_LOG    1
+#define HAVE_LOGF   1
+#define HAVE_LOG10  1
+#define HAVE_LOG10F 1
+#define HAVE_POW    1
+#define HAVE_POWF   1
+#define HAVE_SIN    1
+#define HAVE_SINF   1
+#define HAVE_SQRT   1
+#define HAVE_SQRTF  1
+#define HAVE_TAN    1
+#define HAVE_TANF   1
+#if defined(_MSC_VER)
+/* These functions were added with the VC++ 2013 C runtime library */
 #if _MSC_VER >= 1800
 #define HAVE_STRTOLL 1
 #define HAVE_VSSCANF 1
-#define HAVE_COPYSIGN 1
 #define HAVE_SCALBN 1
+#define HAVE_SCALBNF    1
+#endif
+/* This function is available with at least the VC++ 2008 C runtime library */
+#if _MSC_VER >= 1400
+#define HAVE__FSEEKI64 1
+#endif
 #endif
 #if !defined(_MSC_VER) || defined(_USE_MATH_DEFINES)
 #define HAVE_M_PI 1
@@ -154,8 +184,8 @@
 #endif
 
 /* Enable various audio drivers */
+#define SDL_AUDIO_DRIVER_WASAPI 1
 #define SDL_AUDIO_DRIVER_DSOUND 1
-#define SDL_AUDIO_DRIVER_XAUDIO2    1
 #define SDL_AUDIO_DRIVER_WINMM  1
 #define SDL_AUDIO_DRIVER_DISK   1
 #define SDL_AUDIO_DRIVER_DUMMY  1
@@ -163,8 +193,12 @@
 /* Enable various input drivers */
 #define SDL_JOYSTICK_DINPUT 1
 #define SDL_JOYSTICK_XINPUT 1
+#define SDL_JOYSTICK_HIDAPI 1
 #define SDL_HAPTIC_DINPUT   1
 #define SDL_HAPTIC_XINPUT   1
+
+/* Enable the dummy sensor driver */
+#define SDL_SENSOR_DUMMY  1
 
 /* Enable various shared object loading systems */
 #define SDL_LOADSO_WINDOWS  1
@@ -183,7 +217,7 @@
 #define SDL_VIDEO_RENDER_D3D    1
 #endif
 #ifndef SDL_VIDEO_RENDER_D3D11
-#define SDL_VIDEO_RENDER_D3D11	0
+#define SDL_VIDEO_RENDER_D3D11  0
 #endif
 
 /* Enable OpenGL support */
@@ -206,6 +240,8 @@
 #define SDL_VIDEO_OPENGL_EGL    1
 #endif
 
+/* Enable Vulkan support */
+#define SDL_VIDEO_VULKAN 1
 
 /* Enable system power support */
 #define SDL_POWER_WINDOWS 1
@@ -218,4 +254,4 @@
 #define SDL_ASSEMBLY_ROUTINES   1
 #endif
 
-#endif /* _SDL_config_windows_h */
+#endif /* SDL_config_windows_h_ */
diff --git a/include/SDL2/SDL_copying.h b/include/SDL2/SDL_copying.h
index 212da0e..15616ac 100644
--- a/include/SDL2/SDL_copying.h
+++ b/include/SDL2/SDL_copying.h
@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/include/SDL2/SDL_cpuinfo.h b/include/SDL2/SDL_cpuinfo.h
index 0812705..ee3a47e 100644
--- a/include/SDL2/SDL_cpuinfo.h
+++ b/include/SDL2/SDL_cpuinfo.h
@@ -51,16 +51,19 @@
 #include <intrin.h>
 #else
 #ifdef __ALTIVEC__
-#if HAVE_ALTIVEC_H && !defined(__APPLE_ALTIVEC__) && !defined(SDL_DISABLE_ALTIVEC_H)
+#if defined(HAVE_ALTIVEC_H) && !defined(__APPLE_ALTIVEC__) && !defined(SDL_DISABLE_ALTIVEC_H)
 #include <altivec.h>
 #undef pixel
 #undef bool
 #endif
 #endif
+#if defined(__ARM_NEON__) && !defined(SDL_DISABLE_ARM_NEON_H)
+#include <arm_neon.h>
+#endif
 #if defined(__3dNOW__) && !defined(SDL_DISABLE_MM3DNOW_H)
 #include <mm3dnow.h>
 #endif
-#if HAVE_IMMINTRIN_H && !defined(SDL_DISABLE_IMMINTRIN_H)
+#if defined(HAVE_IMMINTRIN_H) && !defined(SDL_DISABLE_IMMINTRIN_H)
 #include <immintrin.h>
 #else
 #if defined(__MMX__) && !defined(SDL_DISABLE_MMINTRIN_H)
@@ -160,6 +163,11 @@
 extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void);
 
 /**
+ *  This function returns true if the CPU has AVX-512F (foundation) features.
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX512F(void);
+
+/**
  *  This function returns true if the CPU has NEON (ARM SIMD) features.
  */
 extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void);
@@ -168,7 +176,6 @@
  *  This function returns the amount of RAM configured in the system, in MB.
  */
 extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void);
-
 
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
diff --git a/include/SDL2/SDL_events.h b/include/SDL2/SDL_events.h
index 3d39e6a..af22eb6 100644
--- a/include/SDL2/SDL_events.h
+++ b/include/SDL2/SDL_events.h
@@ -85,6 +85,9 @@
                                      Called on Android in onResume()
                                 */
 
+    /* Display events */
+    SDL_DISPLAYEVENT   = 0x150,  /**< Display state change */
+
     /* Window events */
     SDL_WINDOWEVENT    = 0x200, /**< Window state change */
     SDL_SYSWMEVENT,             /**< System specific event */
@@ -144,6 +147,9 @@
     SDL_AUDIODEVICEADDED = 0x1100, /**< A new audio device is available */
     SDL_AUDIODEVICEREMOVED,        /**< An audio device has been removed. */
 
+    /* Sensor events */
+    SDL_SENSORUPDATE = 0x1200,     /**< A sensor was updated */
+
     /* Render events */
     SDL_RENDER_TARGETS_RESET = 0x2000, /**< The render targets have been reset and their contents need to be updated */
     SDL_RENDER_DEVICE_RESET, /**< The device has been reset and all textures need to be recreated */
@@ -167,6 +173,21 @@
     Uint32 type;
     Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
 } SDL_CommonEvent;
+
+/**
+ *  \brief Display state change event data (event.display.*)
+ */
+typedef struct SDL_DisplayEvent
+{
+    Uint32 type;        /**< ::SDL_DISPLAYEVENT */
+    Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
+    Uint32 display;     /**< The associated display index */
+    Uint8 event;        /**< ::SDL_DisplayEventID */
+    Uint8 padding1;
+    Uint8 padding2;
+    Uint8 padding3;
+    Sint32 data1;       /**< event dependent data */
+} SDL_DisplayEvent;
 
 /**
  *  \brief Window state change event data (event.window.*)
@@ -472,6 +493,17 @@
 
 
 /**
+ *  \brief Sensor event structure (event.sensor.*)
+ */
+typedef struct SDL_SensorEvent
+{
+    Uint32 type;        /**< ::SDL_SENSORUPDATE */
+    Uint32 timestamp;   /**< In milliseconds, populated using SDL_GetTicks() */
+    Sint32 which;       /**< The instance ID of the sensor */
+    float data[6];      /**< Up to 6 values from the sensor - additional values can be queried using SDL_SensorGetData() */
+} SDL_SensorEvent;
+
+/**
  *  \brief The "quit requested" event
  */
 typedef struct SDL_QuitEvent
@@ -526,6 +558,7 @@
 {
     Uint32 type;                    /**< Event type, shared with all events */
     SDL_CommonEvent common;         /**< Common event data */
+    SDL_DisplayEvent display;       /**< Window event data */
     SDL_WindowEvent window;         /**< Window event data */
     SDL_KeyboardEvent key;          /**< Keyboard event data */
     SDL_TextEditingEvent edit;      /**< Text editing event data */
@@ -542,6 +575,7 @@
     SDL_ControllerButtonEvent cbutton;  /**< Game Controller button event data */
     SDL_ControllerDeviceEvent cdevice;  /**< Game Controller device event data */
     SDL_AudioDeviceEvent adevice;   /**< Audio device event data */
+    SDL_SensorEvent sensor;         /**< Sensor event data */
     SDL_QuitEvent quit;             /**< Quit request event data */
     SDL_UserEvent user;             /**< Custom event data */
     SDL_SysWMEvent syswm;           /**< System dependent window event data */
diff --git a/include/SDL2/SDL_gamecontroller.h b/include/SDL2/SDL_gamecontroller.h
index 2e024be..6ae9c95 100644
--- a/include/SDL2/SDL_gamecontroller.h
+++ b/include/SDL2/SDL_gamecontroller.h
@@ -176,6 +176,14 @@
 extern DECLSPEC const char *SDLCALL SDL_GameControllerNameForIndex(int joystick_index);
 
 /**
+ *  Get the mapping of a game controller.
+ *  This can be called before any controllers are opened.
+ *
+ *  \return the mapping string.  Must be freed with SDL_free().  Returns NULL if no mapping is available
+ */
+extern DECLSPEC char *SDLCALL SDL_GameControllerMappingForDeviceIndex(int joystick_index);
+
+/**
  *  Open a game controller for use.
  *  The index passed as an argument refers to the N'th game controller on the system.
  *  This index is not the value which will identify this controller in future
@@ -195,6 +203,13 @@
  *  Return the name for this currently opened controller
  */
 extern DECLSPEC const char *SDLCALL SDL_GameControllerName(SDL_GameController *gamecontroller);
+
+/**
+ *  Get the player index of an opened game controller, or -1 if it's not available
+ *
+ *  For XInput controllers this returns the XInput user index.
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerGetPlayerIndex(SDL_GameController *gamecontroller);
 
 /**
  *  Get the USB vendor ID of an opened controller, if available.
@@ -346,6 +361,19 @@
                                                           SDL_GameControllerButton button);
 
 /**
+ *  Trigger a rumble effect
+ *  Each call to this function cancels any previous rumble effect, and calling it with 0 intensity stops any rumbling.
+ *
+ *  \param gamecontroller The controller to vibrate
+ *  \param low_frequency_rumble The intensity of the low frequency (left) rumble motor, from 0 to 0xFFFF
+ *  \param high_frequency_rumble The intensity of the high frequency (right) rumble motor, from 0 to 0xFFFF
+ *  \param duration_ms The duration of the rumble effect, in milliseconds
+ *
+ *  \return 0, or -1 if rumble isn't supported on this joystick
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerRumble(SDL_GameController *gamecontroller, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms);
+
+/**
  *  Close a controller previously opened with SDL_GameControllerOpen().
  */
 extern DECLSPEC void SDLCALL SDL_GameControllerClose(SDL_GameController *gamecontroller);
diff --git a/include/SDL2/SDL_haptic.h b/include/SDL2/SDL_haptic.h
index e3a2bca..2ea1bfc 100644
--- a/include/SDL2/SDL_haptic.h
+++ b/include/SDL2/SDL_haptic.h
@@ -117,6 +117,17 @@
 extern "C" {
 #endif /* __cplusplus */
 
+/* FIXME: For SDL 2.1, adjust all the magnitude variables to be Uint16 (0xFFFF).
+ *
+ * At the moment the magnitude variables are mixed between signed/unsigned, and
+ * it is also not made clear that ALL of those variables expect a max of 0x7FFF.
+ *
+ * Some platforms may have higher precision than that (Linux FF, Windows XInput)
+ * so we should fix the inconsistency in favor of higher possible precision,
+ * adjusting for platforms that use different scales.
+ * -flibit
+ */
+
 /**
  *  \typedef SDL_Haptic
  *
@@ -656,8 +667,8 @@
  * This struct is exclusively for the ::SDL_HAPTIC_LEFTRIGHT effect.
  *
  * The Left/Right effect is used to explicitly control the large and small
- * motors, commonly found in modern game controllers. One motor is high
- * frequency, the other is low frequency.
+ * motors, commonly found in modern game controllers. The small (right) motor
+ * is high frequency, and the large (left) motor is low frequency.
  *
  * \sa SDL_HAPTIC_LEFTRIGHT
  * \sa SDL_HapticEffect
@@ -668,7 +679,7 @@
     Uint16 type;            /**< ::SDL_HAPTIC_LEFTRIGHT */
 
     /* Replay */
-    Uint32 length;          /**< Duration of the effect. */
+    Uint32 length;          /**< Duration of the effect in milliseconds. */
 
     /* Rumble */
     Uint16 large_magnitude; /**< Control of the large controller motor. */
diff --git a/include/SDL2/SDL_hints.h b/include/SDL2/SDL_hints.h
index 3834640..4ee72e9 100644
--- a/include/SDL2/SDL_hints.h
+++ b/include/SDL2/SDL_hints.h
@@ -263,6 +263,16 @@
 #define SDL_HINT_GRAB_KEYBOARD              "SDL_GRAB_KEYBOARD"
 
 /**
+ *  \brief  A variable setting the double click time, in milliseconds.
+ */
+#define SDL_HINT_MOUSE_DOUBLE_CLICK_TIME    "SDL_MOUSE_DOUBLE_CLICK_TIME"
+
+/**
+ *  \brief  A variable setting the double click radius, in pixels.
+ */
+#define SDL_HINT_MOUSE_DOUBLE_CLICK_RADIUS    "SDL_MOUSE_DOUBLE_CLICK_RADIUS"
+
+/**
  *  \brief  A variable setting the speed scale for mouse motion, in floating point, when the mouse is not in relative mode
  */
 #define SDL_HINT_MOUSE_NORMAL_SPEED_SCALE    "SDL_MOUSE_NORMAL_SPEED_SCALE"
@@ -329,7 +339,7 @@
 #define SDL_HINT_IDLE_TIMER_DISABLED "SDL_IOS_IDLE_TIMER_DISABLED"
 
 /**
- *  \brief  A variable controlling which orientations are allowed on iOS.
+ *  \brief  A variable controlling which orientations are allowed on iOS/Android.
  *
  *  In some circumstances it is necessary to be able to explicitly control
  *  which UI orientations are allowed.
@@ -466,6 +476,88 @@
 #define SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS "SDL_JOYSTICK_ALLOW_BACKGROUND_EVENTS"
 
 /**
+ *  \brief  A variable controlling whether the HIDAPI joystick drivers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI drivers are not used
+ *    "1"       - HIDAPI drivers are used (the default)
+ *
+ *  This variable is the default for all drivers, but can be overridden by the hints for specific drivers below.
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI "SDL_JOYSTICK_HIDAPI"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for PS4 controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_PS4 "SDL_JOYSTICK_HIDAPI_PS4"
+
+/**
+ *  \brief  A variable controlling whether extended input reports should be used for PS4 controllers when using the HIDAPI driver.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - extended reports are not enabled (the default)
+ *    "1"       - extended reports
+ *
+ *  Extended input reports allow rumble on Bluetooth PS4 controllers, but
+ *  break DirectInput handling for applications that don't use SDL.
+ *
+ *  Once extended reports are enabled, they can not be disabled without
+ *  power cycling the controller.
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_PS4_RUMBLE "SDL_JOYSTICK_HIDAPI_PS4_RUMBLE"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for Steam Controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_STEAM "SDL_JOYSTICK_HIDAPI_STEAM"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for Nintendo Switch controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_SWITCH "SDL_JOYSTICK_HIDAPI_SWITCH"
+
+/**
+ *  \brief  A variable controlling whether the HIDAPI driver for XBox controllers should be used.
+ *
+ *  This variable can be set to the following values:
+ *    "0"       - HIDAPI driver is not used
+ *    "1"       - HIDAPI driver is used
+ *
+ *  The default is the value of SDL_HINT_JOYSTICK_HIDAPI
+ */
+#define SDL_HINT_JOYSTICK_HIDAPI_XBOX   "SDL_JOYSTICK_HIDAPI_XBOX"
+
+/**
+ *  \brief  A variable that controls whether Steam Controllers should be exposed using the SDL joystick and game controller APIs
+ *
+ *  The variable can be set to the following values:
+ *    "0"       - Do not scan for Steam Controllers
+ *    "1"       - Scan for Steam Controllers (the default)
+ *
+ *  The default value is "1".  This hint must be set before initializing the joystick subsystem.
+ */
+#define SDL_HINT_ENABLE_STEAM_CONTROLLERS "SDL_ENABLE_STEAM_CONTROLLERS"
+
+
+/**
  *  \brief If set to "0" then never set the top most bit on a SDL Window, even if the video mode expects it.
  *      This is a debugging aid for developers and not expected to be used by end users. The default is "1"
  *
@@ -527,6 +619,10 @@
 *  This is specially useful if you build SDL against a non glibc libc library (such as musl) which
 *  provides a relatively small default thread stack size (a few kilobytes versus the default 8MB glibc uses).
 *  Support for this hint is currently available only in the pthread, Windows, and PSP backend.
+*
+*  Instead of this hint, in 2.0.9 and later, you can use
+*  SDL_CreateThreadWithStackSize(). This hint only works with the classic
+*  SDL_CreateThread().
 */
 #define SDL_HINT_THREAD_STACK_SIZE              "SDL_THREAD_STACK_SIZE"
 
@@ -753,6 +849,23 @@
 #define SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH "SDL_ANDROID_SEPARATE_MOUSE_AND_TOUCH"
 
  /**
+ * \brief A variable to control whether we trap the Android back button to handle it manually.
+ *        This is necessary for the right mouse button to work on some Android devices, or
+ *        to be able to trap the back button for use in your code reliably.  If set to true,
+ *        the back button will show up as an SDL_KEYDOWN / SDL_KEYUP pair with a keycode of 
+ *        SDL_SCANCODE_AC_BACK.
+ *
+ * The variable can be set to the following values:
+ *   "0"       - Back button will be handled as usual for system. (default)
+ *   "1"       - Back button will be trapped, allowing you to handle the key press
+ *               manually.  (This will also let right mouse click work on systems 
+ *               where the right mouse button functions as back.)
+ *
+ * The value of this hint is used at runtime, so it can be changed at any time.
+ */
+#define SDL_HINT_ANDROID_TRAP_BACK_BUTTON "SDL_ANDROID_TRAP_BACK_BUTTON"
+
+ /**
  * \brief A variable to control whether the return key on the soft keyboard
  *        should hide the soft keyboard on Android and iOS.
  *
diff --git a/include/SDL2/SDL_joystick.h b/include/SDL2/SDL_joystick.h
index f67772d..6e05a9c 100644
--- a/include/SDL2/SDL_joystick.h
+++ b/include/SDL2/SDL_joystick.h
@@ -97,10 +97,10 @@
 typedef enum
 {
     SDL_JOYSTICK_POWER_UNKNOWN = -1,
-    SDL_JOYSTICK_POWER_EMPTY,
-    SDL_JOYSTICK_POWER_LOW,
-    SDL_JOYSTICK_POWER_MEDIUM,
-    SDL_JOYSTICK_POWER_FULL,
+    SDL_JOYSTICK_POWER_EMPTY,   /* <= 5% */
+    SDL_JOYSTICK_POWER_LOW,     /* <= 20% */
+    SDL_JOYSTICK_POWER_MEDIUM,  /* <= 70% */
+    SDL_JOYSTICK_POWER_FULL,    /* <= 100% */
     SDL_JOYSTICK_POWER_WIRED,
     SDL_JOYSTICK_POWER_MAX
 } SDL_JoystickPowerLevel;
@@ -131,6 +131,12 @@
  *  If no name can be found, this function returns NULL.
  */
 extern DECLSPEC const char *SDLCALL SDL_JoystickNameForIndex(int device_index);
+
+/**
+ *  Get the player index of a joystick, or -1 if it's not available
+ *  This can be called before any joysticks are opened.
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickGetDevicePlayerIndex(int device_index);
 
 /**
  *  Return the GUID for the joystick at this index
@@ -193,6 +199,13 @@
  *  If no name can be found, this function returns NULL.
  */
 extern DECLSPEC const char *SDLCALL SDL_JoystickName(SDL_Joystick * joystick);
+
+/**
+ *  Get the player index of an opened joystick, or -1 if it's not available
+ *
+ *  For XInput controllers this returns the XInput user index.
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickGetPlayerIndex(SDL_Joystick * joystick);
 
 /**
  *  Return the GUID for this opened joystick
@@ -362,6 +375,19 @@
                                                     int button);
 
 /**
+ *  Trigger a rumble effect
+ *  Each call to this function cancels any previous rumble effect, and calling it with 0 intensity stops any rumbling.
+ *
+ *  \param joystick The joystick to vibrate
+ *  \param low_frequency_rumble The intensity of the low frequency (left) rumble motor, from 0 to 0xFFFF
+ *  \param high_frequency_rumble The intensity of the high frequency (right) rumble motor, from 0 to 0xFFFF
+ *  \param duration_ms The duration of the rumble effect, in milliseconds
+ *
+ *  \return 0, or -1 if rumble isn't supported on this joystick
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickRumble(SDL_Joystick * joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms);
+
+/**
  *  Close a joystick previously opened with SDL_JoystickOpen().
  */
 extern DECLSPEC void SDLCALL SDL_JoystickClose(SDL_Joystick * joystick);
diff --git a/include/SDL2/SDL_sensor.h b/include/SDL2/SDL_sensor.h
new file mode 100644
index 0000000..ac163a8
--- /dev/null
+++ b/include/SDL2/SDL_sensor.h
@@ -0,0 +1,251 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/**
+ *  \file SDL_sensor.h
+ *
+ *  Include file for SDL sensor event handling
+ *
+ */
+
+#ifndef _SDL_sensor_h
+#define _SDL_sensor_h
+
+#include "SDL_stdinc.h"
+#include "SDL_error.h"
+
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+extern "C" {
+/* *INDENT-ON* */
+#endif
+
+/**
+ *  \brief SDL_sensor.h
+ *
+ *  In order to use these functions, SDL_Init() must have been called
+ *  with the ::SDL_INIT_SENSOR flag.  This causes SDL to scan the system
+ *  for sensors, and load appropriate drivers.
+ */
+
+struct _SDL_Sensor;
+typedef struct _SDL_Sensor SDL_Sensor;
+
+/**
+ * This is a unique ID for a sensor for the time it is connected to the system,
+ * and is never reused for the lifetime of the application.
+ *
+ * The ID value starts at 0 and increments from there. The value -1 is an invalid ID.
+ */
+typedef Sint32 SDL_SensorID;
+
+/* The different sensors defined by SDL
+ *
+ * Additional sensors may be available, using platform dependent semantics.
+ *
+ * Hare are the additional Android sensors:
+ * https://developer.android.com/reference/android/hardware/SensorEvent.html#values
+ */
+typedef enum
+{
+    SDL_SENSOR_INVALID = -1,    /**< Returned for an invalid sensor */
+    SDL_SENSOR_UNKNOWN,         /**< Unknown sensor type */
+    SDL_SENSOR_ACCEL,           /**< Accelerometer */
+    SDL_SENSOR_GYRO             /**< Gyroscope */
+} SDL_SensorType;
+
+/**
+ * Accelerometer sensor
+ *
+ * The accelerometer returns the current acceleration in SI meters per
+ * second squared. This includes gravity, so a device at rest will have
+ * an acceleration of SDL_STANDARD_GRAVITY straight down.
+ *
+ * values[0]: Acceleration on the x axis
+ * values[1]: Acceleration on the y axis
+ * values[2]: Acceleration on the z axis
+ *
+ * For phones held in portrait mode, the axes are defined as follows:
+ * -X ... +X : left ... right
+ * -Y ... +Y : bottom ... top
+ * -Z ... +Z : farther ... closer
+ * 
+ * The axis data is not changed when the phone is rotated.
+ *
+ * \sa SDL_GetDisplayOrientation()
+ */
+#define SDL_STANDARD_GRAVITY    9.80665f
+
+/**
+ * Gyroscope sensor
+ *
+ * The gyroscope returns the current rate of rotation in radians per second.
+ * The rotation is positive in the counter-clockwise direction. That is,
+ * an observer looking from a positive location on one of the axes would
+ * see positive rotation on that axis when it appeared to be rotating
+ * counter-clockwise.
+ *
+ * values[0]: Angular speed around the x axis
+ * values[1]: Angular speed around the y axis
+ * values[2]: Angular speed around the z axis
+ *
+ * For phones held in portrait mode, the axes are defined as follows:
+ * -X ... +X : left ... right
+ * -Y ... +Y : bottom ... top
+ * -Z ... +Z : farther ... closer
+ * 
+ * The axis data is not changed when the phone is rotated.
+ *
+ * \sa SDL_GetDisplayOrientation()
+ */
+
+/* Function prototypes */
+
+/**
+ *  \brief Count the number of sensors attached to the system right now
+ */
+extern DECLSPEC int SDLCALL SDL_NumSensors(void);
+
+/**
+ *  \brief Get the implementation dependent name of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ * 
+ *  \return The sensor name, or NULL if device_index is out of range.
+ */
+extern DECLSPEC const char *SDLCALL SDL_SensorGetDeviceName(int device_index);
+
+/**
+ *  \brief Get the type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor type, or SDL_SENSOR_INVALID if device_index is out of range.
+ */
+extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetDeviceType(int device_index);
+
+/**
+ *  \brief Get the platform dependent type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor platform dependent type, or -1 if device_index is out of range.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetDeviceNonPortableType(int device_index);
+
+/**
+ *  \brief Get the instance ID of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor instance ID, or -1 if device_index is out of range.
+ */
+extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetDeviceInstanceID(int device_index);
+
+/**
+ *  \brief Open a sensor for use.
+ *
+ *  The index passed as an argument refers to the N'th sensor on the system.
+ *
+ *  \return A sensor identifier, or NULL if an error occurred.
+ */
+extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorOpen(int device_index);
+
+/**
+ * Return the SDL_Sensor associated with an instance id.
+ */
+extern DECLSPEC SDL_Sensor *SDLCALL SDL_SensorFromInstanceID(SDL_SensorID instance_id);
+
+/**
+ *  \brief Get the implementation dependent name of a sensor.
+ *
+ *  \return The sensor name, or NULL if the sensor is NULL.
+ */
+extern DECLSPEC const char *SDLCALL SDL_SensorGetName(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor type, or SDL_SENSOR_INVALID if the sensor is NULL.
+ */
+extern DECLSPEC SDL_SensorType SDLCALL SDL_SensorGetType(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the platform dependent type of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor platform dependent type, or -1 if the sensor is NULL.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetNonPortableType(SDL_Sensor *sensor);
+
+/**
+ *  \brief Get the instance ID of a sensor.
+ *
+ *  This can be called before any sensors are opened.
+ *
+ *  \return The sensor instance ID, or -1 if the sensor is NULL.
+ */
+extern DECLSPEC SDL_SensorID SDLCALL SDL_SensorGetInstanceID(SDL_Sensor *sensor);
+
+/**
+ *  Get the current state of an opened sensor.
+ *
+ *  The number of values and interpretation of the data is sensor dependent.
+ *
+ *  \param sensor The sensor to query
+ *  \param data A pointer filled with the current sensor state
+ *  \param num_values The number of values to write to data
+ *
+ *  \return 0 or -1 if an error occurred.
+ */
+extern DECLSPEC int SDLCALL SDL_SensorGetData(SDL_Sensor * sensor, float *data, int num_values);
+
+/**
+ *  Close a sensor previously opened with SDL_SensorOpen()
+ */
+extern DECLSPEC void SDLCALL SDL_SensorClose(SDL_Sensor * sensor);
+
+/**
+ *  Update the current state of the open sensors.
+ *
+ *  This is called automatically by the event loop if sensor events are enabled.
+ *
+ *  This needs to be called from the thread that initialized the sensor subsystem.
+ */
+extern DECLSPEC void SDLCALL SDL_SensorUpdate(void);
+
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+}
+/* *INDENT-ON* */
+#endif
+#include "close_code.h"
+
+#endif /* _SDL_sensor_h */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/include/SDL2/SDL_stdinc.h b/include/SDL2/SDL_stdinc.h
index 111a064..e373bc3 100644
--- a/include/SDL2/SDL_stdinc.h
+++ b/include/SDL2/SDL_stdinc.h
@@ -86,6 +86,28 @@
 #ifdef HAVE_FLOAT_H
 # include <float.h>
 #endif
+#if defined(HAVE_ALLOCA) && !defined(alloca)
+# if defined(HAVE_ALLOCA_H)
+#  include <alloca.h>
+# elif defined(__GNUC__)
+#  define alloca __builtin_alloca
+# elif defined(_MSC_VER)
+#  include <malloc.h>
+#  define alloca _alloca
+# elif defined(__WATCOMC__)
+#  include <malloc.h>
+# elif defined(__BORLANDC__)
+#  include <malloc.h>
+# elif defined(__DMC__)
+#  include <stdlib.h>
+# elif defined(__AIX__)
+#pragma alloca
+# elif defined(__MRC__)
+void *alloca(unsigned);
+# else
+char *alloca();
+# endif
+#endif
 
 /**
  *  The number of elements in an array.
@@ -328,28 +350,6 @@
 extern "C" {
 #endif
 
-#if defined(HAVE_ALLOCA) && !defined(alloca)
-# if defined(HAVE_ALLOCA_H)
-#  include <alloca.h>
-# elif defined(__GNUC__)
-#  define alloca __builtin_alloca
-# elif defined(_MSC_VER)
-#  include <malloc.h>
-#  define alloca _alloca
-# elif defined(__WATCOMC__)
-#  include <malloc.h>
-# elif defined(__BORLANDC__)
-#  include <malloc.h>
-# elif defined(__DMC__)
-#  include <stdlib.h>
-# elif defined(__AIX__)
-#pragma alloca
-# elif defined(__MRC__)
-void *alloca(unsigned);
-# else
-char *alloca();
-# endif
-#endif
 #ifdef HAVE_ALLOCA
 #define SDL_stack_alloc(type, count)    (type*)alloca(sizeof(type)*(count))
 #define SDL_stack_free(data)
@@ -445,12 +445,12 @@
 #endif
 }
 
-
 extern DECLSPEC void *SDLCALL SDL_memcpy(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
 
 extern DECLSPEC void *SDLCALL SDL_memmove(SDL_OUT_BYTECAP(len) void *dst, SDL_IN_BYTECAP(len) const void *src, size_t len);
 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
 
+extern DECLSPEC wchar_t *SDLCALL SDL_wcsdup(const wchar_t *wstr);
 extern DECLSPEC size_t SDLCALL SDL_wcslen(const wchar_t *wstr);
 extern DECLSPEC size_t SDLCALL SDL_wcslcpy(SDL_OUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
 extern DECLSPEC size_t SDLCALL SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t maxlen);
@@ -514,6 +514,8 @@
 extern DECLSPEC float SDLCALL SDL_copysignf(float x, float y);
 extern DECLSPEC double SDLCALL SDL_cos(double x);
 extern DECLSPEC float SDLCALL SDL_cosf(float x);
+extern DECLSPEC double SDLCALL SDL_exp(double x);
+extern DECLSPEC float SDLCALL SDL_expf(float x);
 extern DECLSPEC double SDLCALL SDL_fabs(double x);
 extern DECLSPEC float SDLCALL SDL_fabsf(float x);
 extern DECLSPEC double SDLCALL SDL_floor(double x);
diff --git a/include/SDL2/SDL_surface.h b/include/SDL2/SDL_surface.h
index 45e5366..730d49f 100644
--- a/include/SDL2/SDL_surface.h
+++ b/include/SDL2/SDL_surface.h
@@ -249,6 +249,13 @@
                                             int flag, Uint32 key);
 
 /**
+ *  \brief Returns whether the surface has a color key
+ *
+ *  \return SDL_TRUE if the surface has a color key, or SDL_FALSE if the surface is NULL or has no color key
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_HasColorKey(SDL_Surface * surface);
+
+/**
  *  \brief Gets the color key (transparent pixel) in a blittable surface.
  *
  *  \param surface The surface to update
diff --git a/include/SDL2/SDL_system.h b/include/SDL2/SDL_system.h
index 7b776fd..4dc372d 100644
--- a/include/SDL2/SDL_system.h
+++ b/include/SDL2/SDL_system.h
@@ -76,6 +76,18 @@
 #endif /* __WIN32__ */
 
 
+/* Platform specific functions for Linux */
+#ifdef __LINUX__
+
+/**
+   \brief Sets the UNIX nice value for a thread, using setpriority() if possible, and RealtimeKit if available.
+
+   \return 0 on success, or -1 on error.
+ */
+extern DECLSPEC int SDLCALL SDL_LinuxSetThreadPriority(Sint64 threadID, int priority);
+ 
+#endif /* __LINUX__ */
+	
 /* Platform specific functions for iOS */
 #if defined(__IPHONEOS__) && __IPHONEOS__
 
@@ -112,6 +124,21 @@
    \brief Return true if the application is running on Android TV
  */
 extern DECLSPEC SDL_bool SDLCALL SDL_IsAndroidTV(void);
+
+/**
+   \brief Return true if the application is running on a Chromebook
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsChromebook(void);
+
+/**
+  \brief Return true is the application is running on a Samsung DeX docking station
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsDeXMode(void);
+
+/**
+ \brief Trigger the Android system back button behavior.
+ */
+extern DECLSPEC void SDLCALL SDL_AndroidBackButton(void);
 
 /**
    See the official Android developer guide for more information:
@@ -236,6 +263,11 @@
 
 #endif /* __WINRT__ */
 
+/**
+ \brief Return true if the current device is a tablet.
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsTablet(void);
+
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
 }
diff --git a/include/SDL2/SDL_syswm.h b/include/SDL2/SDL_syswm.h
index 8aa4a39..f1c4021 100644
--- a/include/SDL2/SDL_syswm.h
+++ b/include/SDL2/SDL_syswm.h
@@ -33,12 +33,6 @@
 #include "SDL_video.h"
 #include "SDL_version.h"
 
-#include "begin_code.h"
-/* Set up for C function definitions, even when using C++ */
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /**
  *  \file SDL_syswm.h
  *
@@ -110,6 +104,12 @@
 #include "SDL_egl.h"
 #endif
 
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  *  These are the various supported windowing subsystems
  */
diff --git a/include/SDL2/SDL_thread.h b/include/SDL2/SDL_thread.h
index 82a43fc..554dd0b 100644
--- a/include/SDL2/SDL_thread.h
+++ b/include/SDL2/SDL_thread.h
@@ -54,12 +54,13 @@
 /**
  *  The SDL thread priority.
  *
- *  \note On many systems you require special privileges to set high priority.
+ *  \note On many systems you require special privileges to set high or time critical priority.
  */
 typedef enum {
     SDL_THREAD_PRIORITY_LOW,
     SDL_THREAD_PRIORITY_NORMAL,
-    SDL_THREAD_PRIORITY_HIGH
+    SDL_THREAD_PRIORITY_HIGH,
+    SDL_THREAD_PRIORITY_TIME_CRITICAL
 } SDL_ThreadPriority;
 
 /**
@@ -105,14 +106,24 @@
                  pfnSDL_CurrentBeginThread pfnBeginThread,
                  pfnSDL_CurrentEndThread pfnEndThread);
 
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThreadWithStackSize(int (SDLCALL * fn) (void *),
+                 const char *name, const size_t stacksize, void *data,
+                 pfnSDL_CurrentBeginThread pfnBeginThread,
+                 pfnSDL_CurrentEndThread pfnEndThread);
+
+
 /**
  *  Create a thread.
  */
 #if defined(SDL_CreateThread) && SDL_DYNAMIC_API
 #undef SDL_CreateThread
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
+#undef SDL_CreateThreadWithStackSize
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
 #else
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
 #endif
 
 #elif defined(__OS2__)
@@ -132,14 +143,30 @@
 SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
                  pfnSDL_CurrentBeginThread pfnBeginThread,
                  pfnSDL_CurrentEndThread pfnEndThread);
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data,
+                 pfnSDL_CurrentBeginThread pfnBeginThread,
+                 pfnSDL_CurrentEndThread pfnEndThread);
 #if defined(SDL_CreateThread) && SDL_DYNAMIC_API
 #undef SDL_CreateThread
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
+#undef SDL_CreateThreadWithStackSize
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
 #else
 #define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
+#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
 #endif
 
 #else
+
+/**
+ *  Create a thread with a default stack size.
+ *
+ *  This is equivalent to calling:
+ *  SDL_CreateThreadWithStackSize(fn, name, 0, data);
+ */
+extern DECLSPEC SDL_Thread *SDLCALL
+SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
 
 /**
  *  Create a thread.
@@ -158,9 +185,17 @@
  *   If a system imposes requirements, SDL will try to munge the string for
  *    it (truncate, etc), but the original string contents will be available
  *    from SDL_GetThreadName().
+ *
+ *   The size (in bytes) of the new stack can be specified. Zero means "use
+ *    the system default" which might be wildly different between platforms
+ *    (x86 Linux generally defaults to eight megabytes, an embedded device
+ *    might be a few kilobytes instead).
+ *
+ *   In SDL 2.1, stacksize will be folded into the original SDL_CreateThread
+ *    function.
  */
 extern DECLSPEC SDL_Thread *SDLCALL
-SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
+SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data);
 
 #endif
 
diff --git a/include/SDL2/SDL_version.h b/include/SDL2/SDL_version.h
index 584b48c..31443e1 100644
--- a/include/SDL2/SDL_version.h
+++ b/include/SDL2/SDL_version.h
@@ -59,7 +59,7 @@
 */
 #define SDL_MAJOR_VERSION   2
 #define SDL_MINOR_VERSION   0
-#define SDL_PATCHLEVEL      8
+#define SDL_PATCHLEVEL      9
 
 /**
  *  \brief Macro to determine SDL version program was compiled against.
diff --git a/include/SDL2/SDL_video.h b/include/SDL2/SDL_video.h
index 83f49fa..461f138 100644
--- a/include/SDL2/SDL_video.h
+++ b/include/SDL2/SDL_video.h
@@ -170,6 +170,24 @@
 } SDL_WindowEventID;
 
 /**
+ *  \brief Event subtype for display events
+ */
+typedef enum
+{
+    SDL_DISPLAYEVENT_NONE,          /**< Never used */
+    SDL_DISPLAYEVENT_ORIENTATION    /**< Display orientation has changed to data1 */
+} SDL_DisplayEventID;
+
+typedef enum
+{
+    SDL_ORIENTATION_UNKNOWN,            /**< The display orientation can't be determined */
+    SDL_ORIENTATION_LANDSCAPE,          /**< The display is in landscape mode, with the right side up, relative to portrait mode */
+    SDL_ORIENTATION_LANDSCAPE_FLIPPED,  /**< The display is in landscape mode, with the left side up, relative to portrait mode */
+    SDL_ORIENTATION_PORTRAIT,           /**< The display is in portrait mode */
+    SDL_ORIENTATION_PORTRAIT_FLIPPED    /**< The display is in portrait mode, upside down */
+} SDL_DisplayOrientation;
+
+/**
  *  \brief An opaque handle to an OpenGL context.
  */
 typedef void *SDL_GLContext;
@@ -317,18 +335,6 @@
 extern DECLSPEC int SDLCALL SDL_GetDisplayBounds(int displayIndex, SDL_Rect * rect);
 
 /**
- *  \brief Get the dots/pixels-per-inch for a display
- *
- *  \note Diagonal, horizontal and vertical DPI can all be optionally
- *        returned if the parameter is non-NULL.
- *
- *  \return 0 on success, or -1 if no DPI information is available or the index is out of range.
- *
- *  \sa SDL_GetNumVideoDisplays()
- */
-extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi);
-
-/**
  *  \brief Get the usable desktop area represented by a display, with the
  *         primary display located at 0,0
  *
@@ -348,6 +354,27 @@
 extern DECLSPEC int SDLCALL SDL_GetDisplayUsableBounds(int displayIndex, SDL_Rect * rect);
 
 /**
+ *  \brief Get the dots/pixels-per-inch for a display
+ *
+ *  \note Diagonal, horizontal and vertical DPI can all be optionally
+ *        returned if the parameter is non-NULL.
+ *
+ *  \return 0 on success, or -1 if no DPI information is available or the index is out of range.
+ *
+ *  \sa SDL_GetNumVideoDisplays()
+ */
+extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi);
+
+/**
+ *  \brief Get the orientation of a display
+ *
+ *  \return The orientation of the display, or SDL_ORIENTATION_UNKNOWN if it isn't available.
+ *
+ *  \sa SDL_GetNumVideoDisplays()
+ */
+extern DECLSPEC SDL_DisplayOrientation SDLCALL SDL_GetDisplayOrientation(int displayIndex);
+
+/**
  *  \brief Returns the number of available display modes.
  *
  *  \sa SDL_GetDisplayMode()
diff --git a/include/SDL2/SDL_vulkan.h b/include/SDL2/SDL_vulkan.h
index f04c21a..972cca4 100644
--- a/include/SDL2/SDL_vulkan.h
+++ b/include/SDL2/SDL_vulkan.h
@@ -135,11 +135,11 @@
  *  \brief Get the names of the Vulkan instance extensions needed to create
  *         a surface with \c SDL_Vulkan_CreateSurface().
  *
- *  \param [in]     window Window for which the required Vulkan instance
+ *  \param [in]     \c NULL or window Window for which the required Vulkan instance
  *                  extensions should be retrieved
- *  \param [in,out] count pointer to an \c unsigned related to the number of
+ *  \param [in,out] pCount pointer to an \c unsigned related to the number of
  *                  required Vulkan instance extensions
- *  \param [out]    names \c NULL or a pointer to an array to be filled with the
+ *  \param [out]    pNames \c NULL or a pointer to an array to be filled with the
  *                  required Vulkan instance extensions
  *
  *  \return \c SDL_TRUE on success, \c SDL_FALSE on error.
@@ -153,6 +153,10 @@
  *  is smaller than the number of required extensions, \c SDL_FALSE will be
  *  returned instead of \c SDL_TRUE, to indicate that not all the required
  *  extensions were returned.
+ * 
+ *  \note If \c window is not NULL, it will be checked against its creation
+ *        flags to ensure that the Vulkan flag is present. This parameter
+ *        will be removed in a future major release.
  *
  *  \note The returned list of extensions will contain \c VK_KHR_surface
  *        and zero or more platform specific extensions
@@ -160,12 +164,13 @@
  *  \note The extension names queried here must be enabled when calling
  *        VkCreateInstance, otherwise surface creation will fail.
  *
- *  \note \c window should have been created with the \c SDL_WINDOW_VULKAN flag.
+ *  \note \c window should have been created with the \c SDL_WINDOW_VULKAN flag
+ *        or be \c NULL
  *
  *  \code
  *  unsigned int count;
  *  // get count of required extensions
- *  if(!SDL_Vulkan_GetInstanceExtensions(window, &count, NULL))
+ *  if(!SDL_Vulkan_GetInstanceExtensions(NULL, &count, NULL))
  *      handle_error();
  *
  *  static const char *const additionalExtensions[] =
@@ -179,7 +184,7 @@
  *      handle_error();
  *
  *  // get names of required extensions
- *  if(!SDL_Vulkan_GetInstanceExtensions(window, &count, names))
+ *  if(!SDL_Vulkan_GetInstanceExtensions(NULL, &count, names))
  *      handle_error();
  *
  *  // copy additional extensions after required extensions
diff --git a/osx/libSDL2.dylib b/osx/libSDL2.dylib
index 05ea923..8dfaef8 100755
--- a/osx/libSDL2.dylib
+++ b/osx/libSDL2.dylib
Binary files differ
diff --git a/win32/lib/SDL2.dll b/win32/lib/SDL2.dll
index 26929fc..7017790 100644
--- a/win32/lib/SDL2.dll
+++ b/win32/lib/SDL2.dll
Binary files differ
diff --git a/win32/lib/SDL2.lib b/win32/lib/SDL2.lib
index 0aa5250..cef7901 100644
--- a/win32/lib/SDL2.lib
+++ b/win32/lib/SDL2.lib
Binary files differ
diff --git a/win32/lib/SDL2main.lib b/win32/lib/SDL2main.lib
index bbe9635..55c40c7 100644
--- a/win32/lib/SDL2main.lib
+++ b/win32/lib/SDL2main.lib
Binary files differ
diff --git a/win32/lib64/SDL2.dll b/win32/lib64/SDL2.dll
index a0fbbb9..934f809 100644
--- a/win32/lib64/SDL2.dll
+++ b/win32/lib64/SDL2.dll
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diff --git a/win32/lib64/SDL2.lib b/win32/lib64/SDL2.lib
index eadb5f9..f4941ae 100644
--- a/win32/lib64/SDL2.lib
+++ b/win32/lib64/SDL2.lib
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diff --git a/win32/lib64/SDL2main.lib b/win32/lib64/SDL2main.lib
index 2acc565..6129946 100644
--- a/win32/lib64/SDL2main.lib
+++ b/win32/lib64/SDL2main.lib
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