Supporting CoreWindow and SwapChainPanel in ANGLE's EGL allows applications to run on Windows 8.1, Windows Phone 8.1, and later. Microsoft contributed support for lower feature levels to the project. The capability to use ANGLE in a Windows Store app was added in 2014. Work was started on then future OpenGL ES 3.0 version, for the newer Direct3D 11 backend. The current production version (2.1.x) implements OpenGL ES 2.0, 3.0 and (for some platforms) 3.1 and EGL 1.4, claiming to pass the conformance tests for both. Google initially released the program under the BSD license. The project started as a way for Google to bring full hardware acceleration for WebGL to Windows without relying on OpenGL graphics drivers.
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