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@@ -9,38 +9,82 @@
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<body>
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[page:Texture] →
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- <h1>[name]</h1>
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+ <h1>帧缓冲纹理([name])</h1>
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<p class="desc">
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- This class can only be used in combination with [page:WebGLRenderer.copyFramebufferToTexture]().
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+ 这个类只能与 [page:WebGLRenderer.copyFramebufferToTexture]() 结合使用。
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</p>
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- <h2>Constructor</h2>
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+ <code>
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+ const pixelRatio = window.devicePixelRatio;
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+ const textureSize = 128 * pixelRatio;
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+
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+ // instantiate a framebuffer texture
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+ const frameTexture = new FramebufferTexture( textureSize, textureSize );
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+
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+ // calculate start position for copying part of the frame data
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+ const vector = new Vector2();
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+ vector.x = ( window.innerWidth * pixelRatio / 2 ) - ( textureSize / 2 );
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+ vector.y = ( window.innerHeight * pixelRatio / 2 ) - ( textureSize / 2 );
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+
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+ // render the scene
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+ renderer.clear();
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+ renderer.render( scene, camera );
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+
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+ // copy part of the rendered frame into the framebuffer texture
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+ renderer.copyFramebufferToTexture( vector, frameTexture );
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+ </code>
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+
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+ <h2>例子</h2>
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+
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+ <p>[example:webgl_framebuffer_texture]</p>
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+
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+ <h2>构造函数</h2>
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<h3>[name]( [param:Number width], [param:Number height] )</h3>
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<p>
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- [page:Number width] -- The width of the texture.<br />
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+ [page:Number width] -- 纹理的宽度<br />
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+
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+ [page:Number height] -- 纹理的高度<br /><br />
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- [page:Number height] -- The height of the texture.
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</p>
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- <h2>Properties</h2>
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+ <h2>属性</h2>
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- <p>See the base [page:Texture Texture] class for common properties.</p>
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+ <p>共有属性请参见其基类 [page:Texture Texture] </p>
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+
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+ <h3>[property:Boolean generateMipmaps]</h3>
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+ <p>是否为 [name] 生成 mipmaps ，默认为`false`</p>
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<h3>[property:Boolean isFramebufferTexture]</h3>
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+ <p>只读，检查给定对象是否为 [name] 类型</p>
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+
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+ <h3>[property:number magFilter]</h3>
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+ <p>
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+ 纹理元素覆盖多个像素时如何对纹理进行采样。默认值为 [page:Textures THREE.NearestFilter] ，它使用最接近的纹理元素。
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+ <br /><br />
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+
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+ 更多细节详见 [page:Textures texture constants]
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+ </p>
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+
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+ <h3>[property:number minFilter]</h3>
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<p>
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- Read-only flag to check if a given object is of type [name].
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+ 纹理元素覆盖少于一个像素时如何对纹理进行采样。默认值为 [page:Textures THREE.NearestFilter] ，它使用最近的纹理元素。
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+ <br /><br />
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+
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+ 更多细节详见 [page:Textures texture constants]
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</p>
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<h3>[property:Boolean needsUpdate]</h3>
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- <h2>Methods</h2>
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+ <p>默认为 `true` ，这是加载 canvas 数据所必需的</p>
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+
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+ <h2>方法</h2>
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- <p>See the base [page:Texture Texture] class for common methods.</p>
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+ <p>共有方法请参见其基类 [page:Texture Texture] </p>
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- <h2>Source</h2>
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+ <h2>源代码</h2>
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<p>
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[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
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LJNaN