Now the same geometry and camera are shared between full-screen quad instances. A mesh is still created for each full-screen quad instance since that avoids repeatedly setting the material on the mesh in cases where a pass only needs one material.

The quad can be passed to renderer.render() directly without being a part of a scene.

This deduplicates a lot of code that used to be the same in a lot of postprocessing passes.

"Delta" is generally used to just mean change. The previous name didn't make it clear what was changing.

Also calculate deltaTime automatically in EffectComposer in case it's not provided.

* add unbiased mode to the MSAA render pass.

* clearer code.

* better comment.

* cleanup code.  fix bug of using "camera", instead of "this.camera"

* fix more places were "camera" is used instad of "this.camera" -- it worked because example declared "camera" as a global.

* reduce light intensity.

* add PerspectiveCamera.clearViewOffset() per @mrdoob's recommendation.

* add Pass.setSize() and have it called automatically by EffectComposer.setSize()

* fix minor bugs in EffectComposer.setSize routine.

* fix buggy prototype usage in Pass derived classes.

* fix buggy prototype usage in Pass derived classes.

* remove constructors as suggested by @mrdoob

* fix MaskPass's prototype.

* init pass side when added to compositor.

* tabify EffectComposer.js

* simplify for loop.

* fix buggy prototype usage in Pass derived classes.

* remove constructors as suggested by @mrdoob

* fix MaskPass's prototype.

* Examples: use .texture of input render targets.

* Assign null instead of undefined.

* Post-Processing: Introducing base class for Passes

* Post-Processing: move pass to effect composer