Updated SDL2 to the latest Mercurial revision.

libs/SDL2/include/SDL_video.h

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2015 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
@@ -189,7 +189,8 @@ typedef enum
     SDL_GL_CONTEXT_FLAGS,
     SDL_GL_CONTEXT_PROFILE_MASK,
     SDL_GL_SHARE_WITH_CURRENT_CONTEXT,
-    SDL_GL_FRAMEBUFFER_SRGB_CAPABLE
+    SDL_GL_FRAMEBUFFER_SRGB_CAPABLE,
+    SDL_GL_CONTEXT_RELEASE_BEHAVIOR
 } SDL_GLattr;
 
 typedef enum
@@ -207,6 +208,12 @@ typedef enum
     SDL_GL_CONTEXT_RESET_ISOLATION_FLAG    = 0x0008
 } SDL_GLcontextFlag;
 
+typedef enum
+{
+    SDL_GL_CONTEXT_RELEASE_BEHAVIOR_NONE   = 0x0000,
+    SDL_GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH  = 0x0001
+} SDL_GLcontextReleaseFlag;
+
 
 /* Function prototypes */
 
@@ -289,6 +296,18 @@ extern DECLSPEC const char * SDLCALL SDL_GetDisplayName(int displayIndex);
  */
 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 Returns the number of available display modes.
  *
@@ -715,6 +734,9 @@ extern DECLSPEC int SDLCALL SDL_UpdateWindowSurfaceRects(SDL_Window * window,
  *  \param window The window for which the input grab mode should be set.
  *  \param grabbed This is SDL_TRUE to grab input, and SDL_FALSE to release input.
  *
+ *  If the caller enables a grab while another window is currently grabbed,
+ *  the other window loses its grab in favor of the caller's window.
+ *
  *  \sa SDL_GetWindowGrab()
  */
 extern DECLSPEC void SDLCALL SDL_SetWindowGrab(SDL_Window * window,
@@ -729,6 +751,15 @@ extern DECLSPEC void SDLCALL SDL_SetWindowGrab(SDL_Window * window,
  */
 extern DECLSPEC SDL_bool SDLCALL SDL_GetWindowGrab(SDL_Window * window);
 
+/**
+ *  \brief Get the window that currently has an input grab enabled.
+ *
+ *  \return This returns the window if input is grabbed, and NULL otherwise.
+ *
+ *  \sa SDL_SetWindowGrab()
+ */
+extern DECLSPEC SDL_Window * SDLCALL SDL_GetGrabbedWindow(void);
+
 /**
  *  \brief Set the brightness (gamma correction) for a window.
  *