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46 lines
2.3 KiB
Markdown
Executable File
46 lines
2.3 KiB
Markdown
Executable File
Windows
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================================================================================
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================================================================================
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OpenGL ES 2.x support
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================================================================================
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SDL has support for OpenGL ES 2.x under Windows via two alternative
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implementations.
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The most straightforward method consists in running your app in a system with
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a graphic card paired with a relatively recent (as of November of 2013) driver
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which supports the WGL_EXT_create_context_es2_profile extension. Vendors known
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to ship said extension on Windows currently include nVidia and Intel.
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The other method involves using the ANGLE library (https://code.google.com/p/angleproject/)
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If an OpenGL ES 2.x context is requested and no WGL_EXT_create_context_es2_profile
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extension is found, SDL will try to load the libEGL.dll library provided by
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ANGLE.
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To obtain the ANGLE binaries, you can either compile from source from
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https://chromium.googlesource.com/angle/angle or copy the relevant binaries from
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a recent Chrome/Chromium install for Windows. The files you need are:
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* libEGL.dll
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* libGLESv2.dll
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* d3dcompiler_46.dll (supports Windows Vista or later, better shader compiler)
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or...
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* d3dcompiler_43.dll (supports Windows XP or later)
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If you compile ANGLE from source, you can configure it so it does not need the
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d3dcompiler_* DLL at all (for details on this, see their documentation).
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However, by default SDL will try to preload the d3dcompiler_46.dll to
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comply with ANGLE's requirements. If you wish SDL to preload d3dcompiler_43.dll (to
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support Windows XP) or to skip this step at all, you can use the
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SDL_HINT_VIDEO_WIN_D3DCOMPILER hint (see SDL_hints.h for more details).
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Known Bugs:
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* SDL_GL_SetSwapInterval is currently a no op when using ANGLE. It appears
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that there's a bug in the library which prevents the window contents from
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refreshing if this is set to anything other than the default value.
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Vulkan Surface Support
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==============
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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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