Texture which displays the content of an external buffer. Displays the content of an external buffer provided by the platform. Requires the [url=https://registry.khronos.org/OpenGL/extensions/OES/OES_EGL_image_external.txt]OES_EGL_image_external[/url] extension (OpenGL) or [url=https://registry.khronos.org/vulkan/specs/1.1-extensions/html/vkspec.html#VK_ANDROID_external_memory_android_hardware_buffer]VK_ANDROID_external_memory_android_hardware_buffer[/url] extension (Vulkan). [b]Note:[/b] This is currently only supported in Android builds. Returns the external texture ID. Depending on your use case, you may need to pass this to platform APIs, for example, when creating an [code]android.graphics.SurfaceTexture[/code] on Android. Sets the external buffer ID. Depending on your use case, you may need to call this with data received from a platform API, for example, [code]SurfaceTexture.getHardwareBuffer()[/code] on Android. External texture size.