WebGLRenderer: More let/const.

src/renderers/WebGLRenderer.js

@@ -118,63 +118,63 @@ function WebGLRenderer( parameters ) {
 
 	// internal properties
 
-	let _this = this,
+	const _this = this;
 
-		_isContextLost = false,
+	let _isContextLost = false;
 
-		// internal state cache
+	// internal state cache
 
-		_framebuffer = null,
+	let _framebuffer = null;
 
-		_currentActiveCubeFace = 0,
-		_currentActiveMipmapLevel = 0,
-		_currentRenderTarget = null,
-		_currentFramebuffer = null,
-		_currentMaterialId = - 1,
+	let _currentActiveCubeFace = 0;
+	let _currentActiveMipmapLevel = 0;
+	let _currentRenderTarget = null;
+	let _currentFramebuffer = null;
+	let _currentMaterialId = - 1;
 
-		// geometry and program caching
+	// geometry and program caching
 
-		_currentGeometryProgram = {
-			geometry: null,
-			program: null,
-			wireframe: false
-		},
+	const _currentGeometryProgram = {
+		geometry: null,
+		program: null,
+		wireframe: false
+	};
 
-		_currentCamera = null,
-		_currentArrayCamera = null,
+	let _currentCamera = null;
+	let _currentArrayCamera = null;
 
-		_currentViewport = new Vector4(),
-		_currentScissor = new Vector4(),
-		_currentScissorTest = null,
+	const _currentViewport = new Vector4();
+	const _currentScissor = new Vector4();
+	let _currentScissorTest = null;
 
-		//
+	//
 
-		_width = _canvas.width,
-		_height = _canvas.height,
+	let _width = _canvas.width;
+	let _height = _canvas.height;
 
-		_pixelRatio = 1,
-		_opaqueSort = null,
-		_transparentSort = null,
+	let _pixelRatio = 1;
+	let _opaqueSort = null;
+	let _transparentSort = null;
 
-		_viewport = new Vector4( 0, 0, _width, _height ),
-		_scissor = new Vector4( 0, 0, _width, _height ),
-		_scissorTest = false,
+	const _viewport = new Vector4( 0, 0, _width, _height );
+	const _scissor = new Vector4( 0, 0, _width, _height );
+	let _scissorTest = false;
 
-		// frustum
+	// frustum
 
-		_frustum = new Frustum(),
+	const _frustum = new Frustum();
 
-		// clipping
+	// clipping
 
-		_clipping = new WebGLClipping(),
-		_clippingEnabled = false,
-		_localClippingEnabled = false,
+	const _clipping = new WebGLClipping();
+	let _clippingEnabled = false;
+	let _localClippingEnabled = false;
 
-		// camera matrices cache
+	// camera matrices cache
 
-		_projScreenMatrix = new Matrix4(),
+	const _projScreenMatrix = new Matrix4();
 
-		_vector3 = new Vector3();
+	const _vector3 = new Vector3();
 
 	const _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };