top-level-scene.js

        const react3 = <React3
            ref="renderer"
            mainCamera="camera"
            width={ gameWidth }
            height={ gameHeight }
            onRendererUpdated={ this._onRenderUpdate }
            antialias
        >

            <module
                ref="mouseInput"
                descriptor={ MouseInput }
            />
            <module
                descriptor={ UpdateAllObjects }
            />

            <GameResources
                lettersArray={ lettersArray }
                shadersArray={ shadersArray }
            />

            <viewport
                x={ 0 }
                y={ 0 }
                width={ gameWidth }
                height={ gameHeight }
                cameraName="mainCamera"
            />

            { confirmingRestart ? <viewport
                x={ 0 }
                y={ 0 }
                width={ gameWidth }
                height={ gameHeight }
                cameraName="confirmRestartCamera"
                onBeforeRender={ this.onBeforeRender }
            /> : null }

            { confirmingRestartBook ? <viewport
                x={ 0 }
                y={ 0 }
                width={ gameWidth }
                height={ gameHeight }
                cameraName="confirmRestartBookCamera"
                onBeforeRender={ this.onBeforeRender }
            /> : null }

            { confirmingMenu ? <viewport
                x={ 0 }
                y={ 0 }
                width={ gameWidth }
                height={ gameHeight }
                cameraName="confirmMenuCamera"
                onBeforeRender={ this.onBeforeRender }
            /> : null }

            { !paused && textIsVisible ? <viewport
                x={ 0 }
                y={ 0 }
                width={ gameWidth }
                height={ gameHeight }
                cameraName="speechCamera"
                onBeforeRender={ this.onBeforeRender }
            /> : null }

            { !confirmingRestart && !confirmingMenu && paused ? <viewport
                x={ 0 }
                y={ 0 }
                width={ gameWidth }
                height={ gameHeight }
                cameraName="pausedCamera"
                onBeforeRender={ this.onBeforeRender }
            /> : null }

            <viewport
                x={ 0 }
                y={ 0 }
                width={ gameWidth }
                height={ gameHeight }
                cameraName="transitionCamera"
                onBeforeRender={ this.onBeforeRender }
            />

            <scene ref="scene"
                onUpdate={ this._onAnimate }
            >

                <ambientLight
                    color={ 0xdddddd }
                />

                <directionalLight
                    color={ 0xffffff }
                    intensity={ 0.3 }
                    castShadow
                    position={ lightPosition }
                />