The following two methods are tested under environment: Unity 2019.2.14 + SteamVR SDK, Built-in RP.<\/p>\n\n\n\n
This is a simple way to make mirros that also work in VR.<\/p>\n\n\n\n
The 3D obejct should now replicate MirrorCamera\u2019s camera view on its surface. Adjust MirrorCamera rotation to face the appropriate direction.<\/p>\n\n\n\n
Vive Stereo Rendering Toolkit provides VR mirror rendering methods. We need to download it from Asset Store and make a few quick changes to make it compatible with Unity 2019.2.x. Changes are made to the following files:<\/p>\n\n\n\n
DeviceType.cs<\/p>\n\n\n\n
\/\/ Lines 43 ~ 68\n\/\/Comment out lines 43 ~ 68;\n\n public static IDeviceParamFactory InitParamFactory(HmdType hmdType)\n {\n\/\/ #if (VIVE_STEREO_STEAMVR)\n\/\/ if (hmdType == HmdType.SteamVR)\n\/\/ {\n return new SteamVRParamFactory();\n\/\/ }\n\/\/ #endif\n\n\/\/ #if (VIVE_STEREO_OVR)\n\/\/ if (hmdType == HmdType.OVR)\n\/\/ {\n\/\/ return new OVRParamFactory();\n\/\/ }\n\/\/ #endif\n\n\/\/ #if (UNITY_ANDROID && VIVE_STEREO_WAVEVR)\n\/\/ if (hmdType == HmdType.WaveVR)\n\/\/ {\n\/\/ return new WaveVRParamFactory();\n\/\/ }\n\/\/ #endif\n\n\/\/ Debug.LogError(\"Cannot get suitable projection parameter for current HMD.\");\n\/\/ return null;\n }<\/code><\/pre>\n\n\n\nSteamVRParamFactory.cs<\/p>\n\n\n\n
\n\/\/========= Copyright 2016-2017, HTC Corporation. All rights reserved. ===========\nusing UnityEngine;\nusing Valve.VR; \/\/ Add using Valve.VR at the beginning.\n\n\/\/ Comment out some lines as shown.\n\nnamespace HTC.UnityPlugin.StereoRendering\n{\n\/\/ #if (VIVE_STEREO_STEAMVR)\n public class SteamVRParamFactory : IDeviceParamFactory\n {\n public int GetRenderWidth()\n {\n return (int)SteamVR.instance.sceneWidth;\n }\n\n public int GetRenderHeight()\n {\n return (int)SteamVR.instance.sceneHeight;\n }\n\n public Vector3 GetEyeSeperation(int eye)\n {\n var eyePos = SteamVR.instance.eyes[eye].pos;\n eyePos.z = 0.0f;\n return eyePos;\n }\n\n public Quaternion GetEyeLocalRotation(int eye)\n {\n return SteamVR.instance.eyes[eye].rot;\n }\n\n public Matrix4x4 GetProjectionMatrix(int eye, float nearPlane, float farPlane)\n {\n return HMDMatrix4x4ToMatrix4x4(SteamVR.instance.hmd.GetProjectionMatrix((Valve.VR.EVREye)eye, nearPlane, farPlane));\n }\n\n \/\/ transform a SteamVR matrix format to Unity matrix format\n private Matrix4x4 HMDMatrix4x4ToMatrix4x4(Valve.VR.HmdMatrix44_t hmdMatrix)\n {\n Matrix4x4 m = Matrix4x4.identity;\n\n m[0, 0] = hmdMatrix.m0;\n m[0, 1] = hmdMatrix.m1;\n m[0, 2] = hmdMatrix.m2;\n m[0, 3] = hmdMatrix.m3;\n\n m[1, 0] = hmdMatrix.m4;\n m[1, 1] = hmdMatrix.m5;\n m[1, 2] = hmdMatrix.m6;\n m[1, 3] = hmdMatrix.m7;\n\n m[2, 0] = hmdMatrix.m8;\n m[2, 1] = hmdMatrix.m9;\n m[2, 2] = hmdMatrix.m10;\n m[2, 3] = hmdMatrix.m11;\n\n m[3, 0] = hmdMatrix.m12;\n m[3, 1] = hmdMatrix.m13;\n m[3, 2] = hmdMatrix.m14;\n m[3, 3] = hmdMatrix.m15;\n\n return m;\n }\n }\n\/\/ #endif\n}<\/code><\/pre>\n\n\n\nWith these quick changes in place, there should be no error messages anymore. Create a 3D object Quad to act as our mirror model. Add a Stereo Renderer component to it. Within this Stereo Renderer component, enable IsMirror, set Canvas Origin World Rot and Anchor World Rot = 270.<\/p>\n\n\n\n
\n\n\n\nReferences:<\/p>\n\n\n\n
\u4e09\u65e5\u6708 \u3075\u3086\u306e. (2019, December 2). Unity 2019.2.x \u3067 VR \u7a7a\u9593\u5185\u306b\u93e1\u3092\u7f6e\u304d\u305f\u3044. Retrieved April 1, 2020, from https:\/\/mikazuki.hatenablog.jp\/entry\/2019\/12\/02\/005945<\/a>
Sesleria. (2019, July 13). Vive Stereo Rendering Toolkit(MirrorExample)\u3092Unity2019 SteamVR Plugin2.3.2\u3067\u52d5\u304b\u3059\u307e\u3067. Retrieved April 1, 2020, from https:\/\/qiita.com\/Sesleria\/items\/350092968d6e9b893053<\/a><\/p>\n\n\n\n Ytomi. (2019, October 13). \u3010Unity\u3011\u30e2\u30fc\u30b7\u30e7\u30f3\u30ad\u30e3\u30d7\u30c1\u30e3\u30fc\u3092\u4f7f\u3063\u305f\u30aa\u30ea\u30b8\u30ca\u30eb\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u4f5c\u6210. Retrieved April 1, 2020, from https:\/\/styly.cc\/ja\/tips\/motioncapture-animation_ytomi\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Methods for achieving simple VR-compatible mirror effect.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[43],"tags":[53,75],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/noirccc.net\/blog\/wp-json\/wp\/v2\/posts\/23"}],"collection":[{"href":"https:\/\/noirccc.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/noirccc.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/noirccc.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/noirccc.net\/blog\/wp-json\/wp\/v2\/comments?post=23"}],"version-history":[{"count":3,"href":"https:\/\/noirccc.net\/blog\/wp-json\/wp\/v2\/posts\/23\/revisions"}],"predecessor-version":[{"id":543,"href":"https:\/\/noirccc.net\/blog\/wp-json\/wp\/v2\/posts\/23\/revisions\/543"}],"wp:attachment":[{"href":"https:\/\/noirccc.net\/blog\/wp-json\/wp\/v2\/media?parent=23"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/noirccc.net\/blog\/wp-json\/wp\/v2\/categories?post=23"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/noirccc.net\/blog\/wp-json\/wp\/v2\/tags?post=23"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}