105 lines
4.5 KiB
C#
105 lines
4.5 KiB
C#
// Copyright HTC Corporation All Rights Reserved.
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using System.Runtime.InteropServices;
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using System;
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using AOT;
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using UnityEngine.Profiling;
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namespace VIVE.OpenXR
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{
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partial class ViveInterceptors
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{
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[HookHandler("xrEndFrame")]
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private static XrResult OnHookXrEndFrame(XrInstance instance, string name, out IntPtr function)
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{
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if (XrEndFrameOriginal == null)
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{
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var ret = XrGetInstanceProcAddrOriginal(instance, name, out function);
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if (ret != XrResult.XR_SUCCESS)
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return ret;
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XrEndFrameOriginal = Marshal.GetDelegateForFunctionPointer<DelegateXrEndFrame>(function);
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}
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function = xrEndFrameInterceptorPtr;
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return XrResult.XR_SUCCESS;
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}
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public struct XrCompositionLayerBaseHeader
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{
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public XrStructureType type; // This base structure itself has no associated XrStructureType value.
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public System.IntPtr next;
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public XrCompositionLayerFlags layerFlags;
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public XrSpace space;
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}
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public struct XrFrameEndInfo
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{
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public XrStructureType type;
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public System.IntPtr next;
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public XrTime displayTime;
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public XrEnvironmentBlendMode environmentBlendMode;
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public uint layerCount;
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public IntPtr layers; // XrCompositionLayerBaseHeader IntPtr array
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}
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public delegate XrResult DelegateXrEndFrame(XrSession session, ref XrFrameEndInfo frameEndInfo);
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private static readonly DelegateXrEndFrame xrEndFrameInterceptorHandle = new DelegateXrEndFrame(XrEndFrameInterceptor);
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private static readonly IntPtr xrEndFrameInterceptorPtr = Marshal.GetFunctionPointerForDelegate(xrEndFrameInterceptorHandle);
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static DelegateXrEndFrame XrEndFrameOriginal = null;
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[MonoPInvokeCallback(typeof(DelegateXrEndFrame))]
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private static XrResult XrEndFrameInterceptor(XrSession session, ref XrFrameEndInfo frameEndInfo)
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{
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// instance must not null
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//if (instance == null)
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// return XrEndFrameOriginal(session, ref frameEndInfo);
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Profiler.BeginSample("VI:EndFrameB");
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XrResult result = XrResult.XR_SUCCESS;
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bool ret = true;
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if (instance.BeforeOriginalEndFrame != null)
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ret = instance.BeforeOriginalEndFrame(session, ref frameEndInfo, ref result);
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Profiler.EndSample();
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if (!ret)
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return result;
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result = XrEndFrameOriginal(session, ref frameEndInfo);
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Profiler.BeginSample("VI:EndFrameA");
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instance.AfterOriginalEndFrame?.Invoke(session, ref frameEndInfo, ref result);
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Profiler.EndSample();
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return result;
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}
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/// <summary>
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/// If you return false, the original function will not be called.
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/// </summary>
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/// <param name="session"></param>
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/// <param name="frameEndInfo"></param>
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/// <param name="result"></param>
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/// <returns></returns>
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public delegate bool DelegateXrEndFrameInterceptor(XrSession session, ref XrFrameEndInfo frameEndInfo, ref XrResult result);
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/// <summary>
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/// Use this to intercept the original function. This will be called before the original function.
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/// </summary>
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public DelegateXrEndFrameInterceptor BeforeOriginalEndFrame;
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/// <summary>
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/// Use this to intercept the original function. This will be called after the original function.
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/// </summary>
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public DelegateXrEndFrameInterceptor AfterOriginalEndFrame;
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#if PERFORMANCE_TEST
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public delegate XrResult DelegateXrLocateSpace(XrSpace space, XrSpace baseSpace, XrTime time, ref XrSpaceLocation location);
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private static readonly DelegateXrLocateSpace xrLocateSpaceInterceptorHandle = new DelegateXrLocateSpace(XrLocateSpaceInterceptor);
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private static readonly IntPtr xrLocateSpaceInterceptorPtr = Marshal.GetFunctionPointerForDelegate(xrLocateSpaceInterceptorHandle);
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static DelegateXrLocateSpace XrLocateSpaceOriginal = null;
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[MonoPInvokeCallback(typeof(DelegateXrLocateSpace))]
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public static XrResult XrLocateSpaceInterceptor(XrSpace space, XrSpace baseSpace, XrTime time, ref XrSpaceLocation location)
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{
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Profiler.BeginSample("VI:LocateSpace");
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var ret = XrLocateSpaceOriginal(space, baseSpace, time, ref location);
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Profiler.EndSample();
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return ret;
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}
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#endif
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}
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}
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