Merge pull request #7401 from RaananW/fix-multiview

Fix black screen when presenting in multiview

dist/preview release/what's new.md

@@ -282,6 +282,7 @@
 - Fixed issue where textures exported using Safari web browser are Y mirrored. ([#7352](https://github.com/BabylonJS/Babylon.js/issues/7352)) ([Drigax](https://github.com/drigax))
 - Fix a bug when resizing a MRT ([Popov72](https://github.com/Popov72))
 - Fixed an infinite clone recursion bug in `InstancedMesh` due to `DeepCopier.DeepCopy` cloning `parent` ([Poolminer](https://github.com/Poolminer/))
+- Fixed an issue with multiview textures ([RaananW](https://github.com/RaananW/))
 
 ## Breaking changes
 

src/Engines/thinEngine.ts

@@ -3094,7 +3094,7 @@ export class ThinEngine {
             return this._gl.TEXTURE_CUBE_MAP;
         } else if (texture.is3D) {
             return this._gl.TEXTURE_3D;
-        } else if (texture.is2DArray) {
+        } else if (texture.is2DArray || texture.isMultiview) {
             return this._gl.TEXTURE_2D_ARRAY;
         }
         return this._gl.TEXTURE_2D;

src/Materials/Textures/MultiviewRenderTarget.ts

@@ -1,6 +1,7 @@
 import { RenderTargetTexture } from '../Textures/renderTargetTexture';
 import { Scene } from '../../scene';
 import { InternalTextureSource } from '../Textures/internalTexture';
+import { Constants } from '../../Engines/constants';
 
 /**
  * Renders to multiple views with a single draw call
@@ -16,6 +17,7 @@ export class MultiviewRenderTarget extends RenderTargetTexture {
         super("multiview rtt", size, scene, false, true, InternalTextureSource.Unknown, false, undefined, false, false, true, undefined, true);
         var internalTexture = scene.getEngine().createMultiviewRenderTargetTexture(this.getRenderWidth(), this.getRenderHeight());
         internalTexture.isMultiview = true;
+        internalTexture.format = Constants.TEXTUREFORMAT_RGBA;
         this._texture = internalTexture;
         this.samples = this._engine.getCaps().maxSamples || this.samples;
     }