Enabled OpenXR (API256002)

Author: TheMostDiligent

DiligentCore

@@ -996,6 +996,7 @@ descriptions (compile shaders for target platforms, define internal resource lay
 | [25 - Render State Packager](https://github.com/DiligentGraphics/DiligentSamples/tree/master/Tutorials/Tutorial25_StatePackager) | ![](https://github.com/DiligentGraphics/DiligentSamples/blob/master/Tutorials/Tutorial25_StatePackager/Screenshot.jpg) | This tutorial shows how to create and archive pipeline states with the render state packager off-line tool on the example of a simple path tracer. |
 | [26 - Render State Cache](https://github.com/DiligentGraphics/DiligentSamples/tree/master/Tutorials/Tutorial26_StateCache) <br /><br /> [:arrow_forward: Run](https://diligentgraphics.github.io/wasm-modules/Tutorial26_StateCache/Tutorial26_StateCache.html) | ![](https://github.com/DiligentGraphics/DiligentSamples/blob/master/Tutorials/Tutorial26_StateCache/Screenshot.jpg) | This tutorial expands the path tracing technique implemented in previous tutorial and demonstrates how to use the render state cache to save pipeline states created at run time and load them when the application starts. |
 | [27 - Post-Processing](https://github.com/DiligentGraphics/DiligentSamples/tree/master/Tutorials/Tutorial27_PostProcessing) <br /><br /> [:arrow_forward: Run](https://diligentgraphics.github.io/wasm-modules/Tutorial27_PostProcessing/Tutorial27_PostProcessing.html) | ![](https://github.com/DiligentGraphics/DiligentSamples/blob/master/Tutorials/Tutorial27_PostProcessing/Screenshot.jpg) | This tutorial demonstrates how to use post-processing effects from the DiligentFX module. |
+| [28 - OpenXR](https://github.com/DiligentGraphics/DiligentSamples/tree/master/Tutorials/Tutorial28_HelloOpenXR) |    | This tutorial demonstrates how to use Diligent Engine with OpenXR API to render a simple scene in a VR headset. |
 
 <a name="samples"></a>
 # [Samples](https://github.com/DiligentGraphics/DiligentSamples)