document behaviour when render target omitted (mrdoob#8988)

aardgoose · mrdoob · commit 4a84d64f3ff9 · 2016-05-25T08:12:13.000-07:00
diff --git a/docs/api/renderers/WebGLRenderer.html b/docs/api/renderers/WebGLRenderer.html
@@ -263,10 +263,10 @@ <h3>[method:null setTexture]( [page:Texture texture], [page:number slot] )</h3>
 
 		<h3>[method:null setRenderTarget]( [page:WebGLRenderTarget renderTarget] )</h3>
 		<div>
-		renderTarget -- The [page:WebGLRenderTarget renderTarget] that needs to be activated.<br />
+		renderTarget -- The [page:WebGLRenderTarget renderTarget] that needs to be activated (optional).<br />
 		</div>
 		<div>
-		This method sets the active rendertarget.
+		This method sets the active rendertarget. If the parameter is omitted the canvas is set as the active rendertarget.
 		</div>
 
 		<h3>[method:boolean supportsCompressedTextureS3TC]()</h3>
