基于htc vive设备的UE4 VR项目开发需要修改源码的地方

来源：互联网发布：淳安县教育局网络办公编辑：程序博客网时间：2024/05/19 04:07

1、显示器全屏去两旁黑边。

在源码的解决方案里搜索SteamVRRender

找到SteamVRRender.cpp，定位到if (WindowMirrorMode == 1)，做如下修改

if (WindowMirrorMode == 1){// need to clear when rendering only one eye since the borders won't be touched by the DrawRect belowRHICmdList.ClearColorTexture(BackBuffer, FLinearColor::Black, FIntRect());/*RendererModule->DrawRectangle(RHICmdList,ViewportWidth / 4, 0,ViewportWidth / 2, ViewportHeight,0.1f, 0.2f,0.3f, 0.6f,FIntPoint(ViewportWidth, ViewportHeight),FIntPoint(1, 1),*VertexShader,EDRF_Default);*/RendererModule->DrawRectangle(RHICmdList,0, 0,ViewportWidth, ViewportHeight,0.05f, 0.3f,0.4f, 0.4f,FIntPoint(ViewportWidth, ViewportHeight),FIntPoint(1, 1),*VertexShader,EDRF_Default);}

原理如下图：

参考连接：传送门

2、ResetOrientationAndPosition重置头显朝向和位置时（头显设备移动时，playerpawn位置是不动的，所以切换关卡时等操作时有重置的需求）头显位置Z坐标不对，不能重置Z坐标，找到SteamVRHDM.cpp，定位到ResetPosition方法，做如下修改：

void FSteamVRHMD::ResetPosition(){const FTrackingFrame& TrackingFrame = GetTrackingFrame();FMatrix Pose = ToFMatrix(TrackingFrame.RawPoses[vr::k_unTrackedDeviceIndex_Hmd]);/*BaseOffset = FVector(-Pose.M[3][2], Pose.M[3][0], Pose.M[3][1]);*/BaseOffset = FVector(-Pose.M[3][2], Pose.M[3][0], 0);}

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