javascript
/
three.js
镜像自地址 https://github.com/tazdij/three.js.git


			
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		<h1>[name]</h1>

		<p class="desc">
			A [link:https://webglfundamentals.org/webgl/lessons/webgl-render-to-texture.html render target] is a buffer
			where the video card draws pixels for a scene that	is being rendered in the background.
			It is used in different effects, such as applying postprocessing to a rendered image
			before displaying it on the screen.
		</p>


		<h2>Constructor</h2>


		<h3>[name]([param:Number width], [param:Number height], [param:Object options])</h3>

		<p>
		[page:Float width] - The width of the renderTarget. Default is `1`.<br />
		[page:Float height] - The height of the renderTarget. Default is `1`.<br />
		options - optional object that holds texture parameters for an auto-generated target
		texture and depthBuffer/stencilBuffer booleans.

		For an explanation of the texture parameters see [page:Texture Texture]. The following are
		valid options:<br /><br />

		[page:Constant wrapS] - default is [page:Textures ClampToEdgeWrapping]. <br />
		[page:Constant wrapT] - default is [page:Textures ClampToEdgeWrapping]. <br />
		[page:Constant magFilter] - default is [page:Textures LinearFilter]. <br />
		[page:Constant minFilter] - default is [page:Textures LinearFilter]. <br />
		[page:Boolean generateMipmaps] - default is `false`.<br />
		[page:Constant format] - default is [page:Textures RGBAFormat]. <br />
		[page:Constant type] - default is [page:Textures UnsignedByteType]. <br />
		[page:Number anisotropy] - default is `1`. See [page:Texture.anisotropy]<br />
		[page:Constant encoding] - default is [page:Textures LinearEncoding]. <br />
		[page:Boolean depthBuffer] - default is `true`. <br />
		[page:Boolean stencilBuffer] - default is `false`.<br />
		[page:Number samples] - default is 0.<br /><br />

		Creates a new [name]
		</p>

		<h2>Properties</h2>

		<h3>[property:Boolean isWebGLRenderTarget]</h3>
		<p>
			Read-only flag to check if a given object is of type [name].
		</p>

		<h3>[property:number width]</h3>
		<p>
		The width of the render target.
		</p>

		<h3>[property:number height]</h3>
		<p>
		The height of the render target.
		</p>

		<h3>[property:Vector4 scissor]</h3>
		<p>
		A rectangular area inside the render target's viewport. Fragments that are outside the area will be discarded.
		</p>

		<h3>[property:Boolean scissorTest]</h3>
		<p>
		Indicates whether the scissor test is active or not.
		</p>

		<h3>[property:Vector4 viewport]</h3>
		<p>
		The viewport of this render target.
		</p>

		<h3>[property:Texture texture]</h3>
		<p>
		This texture instance holds the rendered pixels. Use it as input for further processing.
		</p>

		<h3>[property:Boolean depthBuffer]</h3>
		<p>
		Renders to the depth buffer. Default is true.
		</p>

		<h3>[property:Boolean stencilBuffer]</h3>
		<p>
		Renders to the stencil buffer. Default is false.
		</p>

		<h3>[property:DepthTexture depthTexture]</h3>
		<p>
		If set, the scene depth will be rendered to this texture. Default is null.
		</p>

		<h3>[property:Number samples]</h3>
		<p>
		Defines the count of MSAA samples. Can only be used with WebGL 2. Default is `0`.
		</p>

		<h2>Methods</h2>

		<h3>[method:undefined setSize]( [param:Number width], [param:Number height] )</h3>
		<p>
		Sets the size of the render target.
		</p>

		<h3>[method:WebGLRenderTarget clone]()</h3>
		<p>
		Creates a copy of this render target.
		</p>

		<h3>[method:this copy]( [param:WebGLRenderTarget source] )</h3>
		<p>
		Adopts the settings of the given render target.
		</p>

		<h3>[method:undefined dispose]()</h3>
		<p>
		Frees the GPU-related resources allocated by this instance. Call this method whenever this instance is no longer used in your app.
		</p>

		<p>[page:EventDispatcher EventDispatcher] methods are available on this class.</p>

		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
		</p>
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