Further changes for Babylon Native.

src/Cameras/XR/webXRSessionManager.ts

@@ -142,13 +142,13 @@ export class WebXRSessionManager implements IDisposable {
             }
         };
 
-        if (this.baseLayer) {
-            // Create render target texture from xr's webgl render target
-            this._rttProvider = new RenderTargetProvider(WebXRSessionManager._CreateRenderTargetTextureFromSession(this.session, this.scene, this.baseLayer!));
-        } else {
+        if (this._xrNavigator.xr.native) {
             this._rttProvider = this._xrNavigator.xr.getNativeRenderTargetProvider(this.session, (width: number, height: number) => {
-                this.scene.getEngine().createRenderTargetTexture({ width: width, height: height }, false);
+                return this.scene.getEngine().createRenderTargetTexture({ width: width, height: height }, false);
             });
+        } else {
+            // Create render target texture from xr's webgl render target
+            this._rttProvider = new RenderTargetProvider(WebXRSessionManager._CreateRenderTargetTextureFromSession(this.session, this.scene, this.baseLayer!));
         }
 
         // Stop window's animation frame and trigger sessions animation frame

src/Engines/nativeEngine.ts

@@ -81,10 +81,10 @@ interface INativeEngine {
     setTexture(uniform: WebGLUniformLocation, texture: Nullable<WebGLTexture>): void;
     deleteTexture(texture: Nullable<WebGLTexture>): void;
 
-    createFrameBuffer(texture: WebGLTexture, width: number, height: number, format: number, samplingMode: number, generateStencilBuffer: boolean, generateDepthBuffer: boolean, generateMipMaps: boolean): WebGLFramebuffer;
-    deleteFrameBuffer(frameBuffer: WebGLFramebuffer): void;
-    bindFrameBuffer(frameBuffer: WebGLFramebuffer): void;
-    unbindFrameBuffer(frameBuffer: WebGLFramebuffer): void;
+    createFramebuffer(texture: WebGLTexture, width: number, height: number, format: number, samplingMode: number, generateStencilBuffer: boolean, generateDepthBuffer: boolean, generateMipMaps: boolean): WebGLFramebuffer;
+    deleteFramebuffer(framebuffer: WebGLFramebuffer): void;
+    bindFramebuffer(framebuffer: WebGLFramebuffer): void;
+    unbindFramebuffer(framebuffer: WebGLFramebuffer): void;
 
     drawIndexed(fillMode: number, indexStart: number, indexCount: number): void;
     draw(fillMode: number, vertexStart: number, vertexCount: number): void;
@@ -158,6 +158,16 @@ class NativeTextureFormat {
     public static readonly RGBA32F = 1;
 }
 
+class NativeTexture extends InternalTexture {
+    public getInternalTexture(): InternalTexture {
+        return this;
+    }
+
+    public getViewCount(): number {
+        return 1;
+    }
+}
+
 /** @hidden */
 declare var nativeEngine: INativeEngine;
 
@@ -1109,7 +1119,7 @@ export class NativeEngine extends Engine {
         }
     }
 
-    public createRenderTargetTexture(size: number | { width: number, height: number }, options: boolean | RenderTargetCreationOptions): InternalTexture {
+    public createRenderTargetTexture(size: number | { width: number, height: number }, options: boolean | RenderTargetCreationOptions): NativeTexture {
         let fullOptions = new RenderTargetCreationOptions();
 
         if (options !== undefined && typeof options === "object") {
@@ -1136,7 +1146,7 @@ export class NativeEngine extends Engine {
             // if floating point linear (HALF_FLOAT) then force to NEAREST_SAMPLINGMODE
             fullOptions.samplingMode = Constants.TEXTURE_NEAREST_SAMPLINGMODE;
         }
-        var texture = new InternalTexture(this, InternalTexture.DATASOURCE_RENDERTARGET);
+        var texture = new NativeTexture(this, InternalTexture.DATASOURCE_RENDERTARGET);
 
         var width = (<{ width: number, height: number }>size).width || <number>size;
         var height = (<{ width: number, height: number }>size).height || <number>size;
@@ -1146,7 +1156,7 @@ export class NativeEngine extends Engine {
             Logger.Warn("Float textures are not supported. Render target forced to TEXTURETYPE_UNSIGNED_BYTE type");
         }
 
-        var framebuffer = this._native.createFrameBuffer(
+        var framebuffer = this._native.createFramebuffer(
             texture._webGLTexture!,
             width,
             height,
@@ -1196,7 +1206,7 @@ export class NativeEngine extends Engine {
             throw new Error("forceFullscreenViewport for frame buffers not yet supported in NativeEngine.");
         }
 
-        this._native.bindFrameBuffer(texture._framebuffer!);
+        this._native.bindFramebuffer(texture._framebuffer!);
     }
 
     public unBindFramebuffer(texture: InternalTexture, disableGenerateMipMaps = false, onBeforeUnbind?: () => void): void {
@@ -1207,7 +1217,7 @@ export class NativeEngine extends Engine {
         if (onBeforeUnbind) {
             onBeforeUnbind();
         }
-        this._native.unbindFrameBuffer(texture._framebuffer!);
+        this._native.unbindFramebuffer(texture._framebuffer!);
     }
 
     public createDynamicVertexBuffer(data: DataArray): DataBuffer {