downgrade Filament libs to v1.34.2 for Windows

ios/include/backend/platforms/OpenGLPlatform.h

@@ -95,19 +95,6 @@ public:
      */
     virtual void destroySwapChain(SwapChain* swapChain) noexcept = 0;
 
-    /**
-     * Returns the set of buffers that must be preserved up to the call to commit().
-     * The default value is TargetBufferFlags::NONE.
-     * The color buffer is always preserved, however ancillary buffers, such as the depth buffer
-     * are generally discarded. The preserve flags can be used to make sure those ancillary
-     * buffers are preserved until the call to commit.
-     *
-     * @param swapChain
-     * @return buffer that must be preserved
-     * @see commit()
-     */
-    virtual TargetBufferFlags getPreservedFlags(SwapChain* swapChain) noexcept;
-
     /**
      * Called by the driver to establish the default FBO. The default implementation returns 0.
       * @return a GLuint casted to a uint32_t that is an OpenGL framebuffer object.
@@ -267,27 +254,6 @@ public:
      * @return Transformed image.
      */
     virtual AcquiredImage transformAcquiredImage(AcquiredImage source) noexcept;
-
-    // --------------------------------------------------------------------------------------------
-
-    /**
-     * Returns true if additional OpenGL contexts can be created. Default: false.
-     * @return true if additional OpenGL contexts can be created.
-     * @see createContext
-     */
-    virtual bool isExtraContextSupported() const noexcept;
-
-    /**
-     * Creates an OpenGL context with the same configuration than the main context and makes it
-     * current to the current thread. Must not be called from the main driver thread.
-     * createContext() is only supported if isExtraContextSupported() returns true.
-     * These additional contexts will be automatically terminated in terminate.
-     *
-     * @param shared whether the new context is shared with the main context.
-     * @see isExtraContextSupported()
-     * @see terminate()
-     */
-    virtual void createContext(bool shared);
 };
 
 } // namespace filament