From 8222bfe56d4dabe8d92fc4b25ea1b0163b16f3e1 Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 4 May 2024 16:51:29 -0700
Subject: Initial commit.

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+# Windows
+
+## LLVM and Intel C++ compiler support
+
+SDL will build with the Visual Studio project files with LLVM-based compilers, such as the Intel oneAPI C++
+compiler, but you'll have to manually add the "-msse3" command line option
+to at least the SDL_audiocvt.c source file, and possibly others. This may
+not be necessary if you build SDL with CMake instead of the included Visual
+Studio solution.
+
+Details are here: https://github.com/libsdl-org/SDL/issues/5186
+
+
+## OpenGL ES 2.x support
+
+SDL has support for OpenGL ES 2.x under Windows via two alternative
+implementations.
+
+The most straightforward method consists in running your app in a system with
+a graphic card paired with a relatively recent (as of November of 2013) driver
+which supports the WGL_EXT_create_context_es2_profile extension. Vendors known
+to ship said extension on Windows currently include nVidia and Intel.
+
+The other method involves using the
+[ANGLE library](https://code.google.com/p/angleproject/). If an OpenGL ES 2.x
+context is requested and no WGL_EXT_create_context_es2_profile extension is
+found, SDL will try to load the libEGL.dll library provided by ANGLE.
+
+To obtain the ANGLE binaries, you can either compile from source from
+https://chromium.googlesource.com/angle/angle or copy the relevant binaries
+from a recent Chrome/Chromium install for Windows. The files you need are:
+
+- libEGL.dll
+- libGLESv2.dll
+- d3dcompiler_46.dll (supports Windows Vista or later, better shader
+  compiler) *or* d3dcompiler_43.dll (supports Windows XP or later)
+
+If you compile ANGLE from source, you can configure it so it does not need the
+d3dcompiler_* DLL at all (for details on this, see their documentation).
+However, by default SDL will try to preload the d3dcompiler_46.dll to
+comply with ANGLE's requirements. If you wish SDL to preload
+d3dcompiler_43.dll (to support Windows XP) or to skip this step at all, you
+can use the SDL_HINT_VIDEO_WIN_D3DCOMPILER hint (see SDL_hints.h for more
+details).
+
+Known Bugs:
+
+- SDL_GL_SetSwapInterval is currently a no op when using ANGLE. It appears
+  that there's a bug in the library which prevents the window contents from
+  refreshing if this is set to anything other than the default value.
+
+## Vulkan Surface Support
+
+Support for creating Vulkan surfaces is configured on by default. To disable
+it change the value of `SDL_VIDEO_VULKAN` to 0 in `SDL_config_windows.h`. You
+must install the [Vulkan SDK](https://www.lunarg.com/vulkan-sdk/) in order to
+use Vulkan graphics in your application.
+
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