| author | Gabriel Jacobo |
| Tue, 29 Jul 2014 09:20:12 -0300 | |
| changeset 9023 | 276802355854 |
| permissions | -rw-r--r-- |
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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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|
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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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|
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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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|
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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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|
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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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|
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Known Bugs: |
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|
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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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