A port of the ANGLE library (OpenGL ES 2.0 for Direct3D) to WinRT, via https://github.com/stammen/angleproject, is used as a base.
To enable, clone 'angleproject' into the directory one above where SDL/WinRT is, open the file SDL/include/SDL_config_winrt.h, and uncomment the #defines that begin with 'SDL_VIDEO_OPENGL'. From there, apps can create an OpenGL capable SDL_Window via the flag, SDL_WINDOW_OPENGL, and an OpenGL ES 2 context via SDL_GL_CreateContext. The Direct3D 11.1 renderer cannot be used alongside SDL_WINDOW_OPENGL. Only Windows 8/8.1 is supported for now. Shaders may need to be precompiled, in some (all?) cases.
To enable the Debug Layer, set the hint, SDL_HINT_RENDER_DIRECT3D11_DEBUG to '1'.
The Debug Layer will be turned off by default, both in Release and Debug builds (of SDL).
J?nis R?cis
Reopening as compilation with ANSI C throws lots of unnecessary warnings, both using MinGW and using Linux GCC. (BTW, what happened? MinGW is broken to all hell. sdl2-config does not even link SDLMain anymore?)
I think this may have been lost somewhere, so again: GCC supports inlining via __inline__ in all known versions of GCC, regardless of the C standard in use. Please don't assume that __STRICT_ANSI__ implies no inlining support.
Andreas Ertelt
The problem in question is caused by changeset 7771 (http://hg.libsdl.org/SDL/rev/5486e579872e / https://bugzilla.libsdl.org/show_bug.cgi?id=2121)
The redefinition of __inline__ (introduced by the addition of begin_code.h:128's "|| __STRICT_ANSI__") results in mingw's gcc throwing multiple
warning: always_inline function might not be inlinable [-Wattributes]
as well as a whole bunch of redefinitions of mingw internals which break linking of projects including the SDL2 headers.
norfanin
Fixes the version check for some functions that are only present with the MSVC 2013 CRT libraries.
I did my testing wrong and failed to see that 2012 doesn't have these functions. Microsoft implemented them in their upcoming 2013 version, though. The attached patch changes it to the check for the next version.
I also removed the HAVE_ITOA because that would require linking with oldnames.lib and it's easier to just let the SDL implementation take over.
This is part of an overall effort to use the name, "WinRT", rather than "WindowsRT" (or "Windows RT"), as the shorthand name often seems to mean something different than the longhand name. (WinRT is an API, Windows RT is a product name)
norfanin
Adds a condition so only the MSVC 2012 compiler defines the macros for the functions of its version.
Attaching a patch that adds a condition so that the HAVE_X supported by MSVC 2012 only get defined with that compiler. MSVC 2008 and 2010 will then build without any modification to the SDL source code.
Also moved HAVE_M_PI to a separate check. The Microsoft headers require _USE_MATH_DEFINES to be defined before they define the constants.
Dmitry Marakasov
Unlike SDL_Rect (typedef struct SDL_Rect {} SDL_Rect), SDL_Point (typedef struct {} SDL_Point) structure is unnamed. This feels inconsistent and makes it impossible to use forward declaration for SDL_Point, having to include whole SDL_rect.h instead.
