address review comment for multiview rendering

Author: cabanier

src/renderers/common/Textures.js

@@ -147,7 +147,7 @@ class Textures extends DataMap {
 
 				const texture = textures[ i ];
 
-				texture.isTextureArray = size.depth > 1;
+				texture.isTextureArray = this.renderer.xr.useMultiview() === true && size.depth > 1;
 				if ( textureNeedsUpdate ) texture.needsUpdate = true;
 
 				this.updateTexture( texture, options );

src/renderers/webgl-fallback/nodes/GLSLNodeBuilder.js

@@ -569,13 +569,13 @@ ${ flowData.code }
 
 					}
 
-				} else if ( texture.isDataArrayTexture === true || texture.isCompressedArrayTexture === true || texture.isTextureArray === true ) {
+				} else if ( uniform.type === 'texture3D' && texture.isTextureArray === false ) {
 
-					snippet = `${typePrefix}sampler2DArray ${ uniform.name };`;
+					snippet = `${typePrefix}sampler3D ${ uniform.name };`;
 
-				} else if ( uniform.type === 'texture3D' ) {
+				} else if ( texture.isDataArrayTexture === true || texture.isCompressedArrayTexture === true || texture.isTextureArray === true ) {
 
-					snippet = `${typePrefix}sampler3D ${ uniform.name };`;
+					snippet = `${typePrefix}sampler2DArray ${ uniform.name };`;
 
 				} else {