fix dst texture not update on the gpu

Author: RenaudRohlinger

examples/jsm/renderers/common/Renderer.js

@@ -982,6 +982,7 @@ class Renderer {
 	copyTextureToTexture( position, srcTexture, dstTexture, level = 0 ) {
 
 		this._textures.updateTexture( srcTexture );
+		this._textures.updateTexture( dstTexture );
 
 		this.backend.copyTextureToTexture( position, srcTexture, dstTexture, level );