From 64dfe9428d5103e5d5b8df4e74fcbcb7f3fd3921 Mon Sep 17 00:00:00 2001
From: Rik Cabanier <cabanier@meta.com>
Date: Wed, 14 Feb 2024 01:38:36 +0000
Subject: [PATCH] reduce extra renderpass with depth sensing

---
 src/renderers/WebGLRenderer.js           | 2 ++
 src/renderers/webxr/WebXRDepthSensing.js | 6 +++---
 src/renderers/webxr/WebXRManager.js      | 8 ++++++--
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/src/renderers/WebGLRenderer.js b/src/renderers/WebGLRenderer.js
index bc0496ee31db12..a9225d9a226fc4 100644
--- a/src/renderers/WebGLRenderer.js
+++ b/src/renderers/WebGLRenderer.js
@@ -1178,6 +1178,8 @@ class WebGLRenderer {
 
 			renderListStack.push( currentRenderList );
 
+			if ( _this.xr.getDepthSensingMesh() ) projectObject( _this.xr.getDepthSensingMesh(), camera, -Infinity, _this.sortObjects );
+
 			projectObject( scene, camera, 0, _this.sortObjects );
 
 			currentRenderList.finish();
diff --git a/src/renderers/webxr/WebXRDepthSensing.js b/src/renderers/webxr/WebXRDepthSensing.js
index 6deb02eed5fec4..0a109c27b7b5e3 100644
--- a/src/renderers/webxr/WebXRDepthSensing.js
+++ b/src/renderers/webxr/WebXRDepthSensing.js
@@ -65,7 +65,7 @@ class WebXRDepthSensing {
 
 	}
 
-	render( renderer, cameraXR ) {
+	getMesh( cameraXR ) {
 
 		if ( this.texture !== null ) {
 
@@ -87,10 +87,10 @@ class WebXRDepthSensing {
 
 			}
 
-			renderer.render( this.mesh, cameraXR );
-
 		}
 
+		return this.mesh;
+
 	}
 
 	reset() {
diff --git a/src/renderers/webxr/WebXRManager.js b/src/renderers/webxr/WebXRManager.js
index fa9a5738c68302..2d5ed91a7f75d7 100644
--- a/src/renderers/webxr/WebXRManager.js
+++ b/src/renderers/webxr/WebXRManager.js
@@ -666,6 +666,12 @@ class WebXRManager extends EventDispatcher {
 
 		};
 
+		this.getDepthSensingMesh  = function () {
+
+			return depthSensing.getMesh( cameraXR );
+
+		};
+
 		// Animation Loop
 
 		let onAnimationFrameCallback = null;
@@ -791,8 +797,6 @@ class WebXRManager extends EventDispatcher {
 
 			}
 
-			depthSensing.render( renderer, cameraXR );
-
 			if ( onAnimationFrameCallback ) onAnimationFrameCallback( time, frame );
 
 			if ( frame.detectedPlanes ) {