VR中image或者文字一直浮现在眼前

• Canvas的RenderMode为WorldSpace

• image的操作方式 World Space canvas on top of "everything" ? - Questions & Answers - Unity DiscussionsIs it possible to render a world space canvas on top of everything? Example, health bars on top of all 3D objects.https://discussions.unity.com/t/world-space-canvas-on-top-of-everything/128165

  Shader "UI/Default_OverlayNoZTest"
  {
      Properties
      {
          [PerRendererData] _MainTex("Sprite Texture", 2D) = "white" {}
          _Color("Tint", Color) = (1,1,1,1)
          _StencilComp("Stencil Comparison", Float) = 8
          _Stencil("Stencil ID", Float) = 0
          _StencilOp("Stencil Operation", Float) = 0
          _StencilWriteMask("Stencil Write Mask", Float) = 255
          _StencilReadMask("Stencil Read Mask", Float) = 255
  
          _CullMode ("Cull Mode", Float) = 0
          _ColorMask("Color Mask", Float) = 15
      }
  
      SubShader
      {
          Tags
          {
              "Queue" = "Overlay"
              "IgnoreProjector" = "True"
              "RenderType" = "Transparent"
              //"PreviewType" = "Plane"
              //"CanUseSpriteAtlas" = "True"
          }
  
          Stencil
          {
              Ref[_Stencil]
              Comp[_StencilComp]
              Pass[_StencilOp]
              ReadMask[_StencilReadMask]
              WriteMask[_StencilWriteMask]
          }
  
          Cull [_CullMode]
          ZWrite Off
          Lighting Off
          Fog
          {
              Mode Off
          }
          ZTest Always
          Blend One OneMinusSrcAlpha
          ColorMask [_ColorMask]
  
          Pass
          {
              CGPROGRAM
              #pragma vertex vert
              #pragma fragment frag
              #include "UnityCG.cginc"
  
              struct appdata_t
              {
                  UNITY_VERTEX_INPUT_INSTANCE_ID
                  float4 vertex : POSITION;
                  float4 color : COLOR;
                  float2 texcoord : TEXCOORD0;
              };
  
              struct v2f
              {
                  UNITY_VERTEX_INPUT_INSTANCE_ID
  			    UNITY_VERTEX_OUTPUT_STEREO
                  float4 vertex : SV_POSITION;
                  fixed4 color : COLOR;
                  half2 texcoord : TEXCOORD0;
              };
  
              fixed4 _Color;
              fixed4 _TextureSampleAdd; //Added for font color support
  
              v2f vert(appdata_t IN)
              {
                  v2f OUT;
  
                  UNITY_INITIALIZE_OUTPUT(v2f, OUT);
  			    UNITY_SETUP_INSTANCE_ID(IN);
  			    UNITY_TRANSFER_INSTANCE_ID(IN, OUT);
  			    UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT);
                  
                  OUT.vertex = UnityObjectToClipPos(IN.vertex);
                  OUT.texcoord = IN.texcoord;
                  #ifdef UNITY_HALF_TEXEL_OFFSET
          OUT.vertex.xy += (_ScreenParams.zw - 1.0)*float2(-1,1);
                  #endif
                  OUT.color = IN.color * _Color;
                  return OUT;
              }
  
              sampler2D _MainTex;
  
              fixed4 frag(v2f IN) : SV_Target
              {
                  half4 color = (tex2D(_MainTex, IN.texcoord) + _TextureSampleAdd) * IN.color;
                  //Added for font color support
                  clip(color.a - 0.01);
                  return color;
              }
              ENDCG
          }
      }
  }

  shader逻辑在项目中创建并附加到材质球，并把材质球赋值给Material

• TextMeshPro为字体创建的sdf材质进行修改 Overlay

• 改为