* New webgl_physics_brick demo. Cutting a convex by a plane works, but it must be refactored to work from Geometry, not from "segmentedobject"

* webgl_physics_brick: Splitting a convex mesh with a plane works.

* webgl_physics_brick: Preparing to refactor objects

* webgl_physics_brick: Refactored objects to hang on the THREE.Object3d

* webgl_physics_brick: Radial subdivision works. To do: non-radial one.

* webgl_physics_brick: Non-radial subdivision works.

* 'breaking things' example works.

* added webgl_physics_convex_break to example index. Aded a pyramid.

* webgl_physics_convex_break: Add friction

* webgl_physics_convex_break: Add velocity and angular vel. from parent.

* webgl_physics_convex_break: Change guideline comment.

* webgl_physics_convex_break: Changed page title.

1. Draw Non Selected objects in the depth buffer
2. Make non selected objects invisible, and draw only the selected objects, by comparing the depth buffer of non selected objects. Write a mask here for visible and hidden edges.
3. Downsample the Mask buffer to half
4. Edge detect the half res buffer, with different colors to hidden and visible edges.
5. Blur the edges of half res/quarter res buffer(quarter res is used for edge glow)
6. Add the blurred edges on top of original scene using the full res mask buffer

* Bloom Pass Inspired from Unreal
* Extract Bright Pass
* Mip Map blur Pass
* Combine Pass

* resize function in Bloom

resize function in Bloom

* Bug Fixes and a few Changes

* Resize bug fix
* changed blur filter. Need to reinvestigate, the older blur sometime
* Changed kernel size. was too big.

* Adds a BVH Loader & example #5524

* bVHLoader example fixed empty mesh errors.

* BVHLoader: replaced internal quaternions with THREE.Quaternion

* added BVHLoader example to example files

* removed arrow function notation

* BVHLoader example: replaced example animation.

* start of background pass test.

* get clear pass and texture pass working well with each other.

* cube texture pass works.  render pass now obeys Pass.clear.  CubeTexturePass supports opacity.  TexturePass doesn't write to the depth buffer.

* get rid of temp matrix.

* add to files.js.  better title.

* remove unused scene parameter from CubeTexturePass.

* New ammo.js lib version. Physics demos: terrain and rope.

* Physics demo: Cloth and wall.

* Physics demo: Soft volumes.

* Added physics demos to files list.

* clear coat implementation.

* add physical variations to examples.

* add example file for physical materials

* adjust clearcoat range to 0-1 as original.

* switch example color to gray from yellow.

* Water grid simulation w/ ShaderMaterial cloned from MeshPhongMaterial

* Water shader works with texture heightmap

* Added GPUComputationRenderer, I'm about to test it

* GPUComputationRenderer works with water simulation

* Interaction with mouse

* Added water viscosity, simple geometry for mouse picking

* Put pass thru shaders in GPUComputationRenderer. Some minor refactoring.

* Code revisison, added comments and explanations. Inverted mouse Y coord.

* Added GUI controls for some water parameters.

* Commencing conversion of birds gpu demo to GPUComputationRenderer

* Converted gpu birds demo to GPUComputationRenderer and fixed bugs in it.

* Solved mouse bug.

* Optimized smoothWater(), renamed some GPUComputationRenderer methods.

* Substituted old bird gpu implementation. Preparing for new demo.

* Removing old SimulationRenderer

* GPU protoplanets demo started. Minor tweaks in the other demos

* Starting to implement the particle demo

* $th component of texture now is usable. It was the GPUComputationRenderer
pass-through fragment shader.
Next thing to do is use a texture that contains (vx, vy, vz, mass).

* Particles already move. Next is gravity interaction.

* Gravity interaction done. Next is particle collision and aggregation.

* Particle collision works

* Added gui

* Some minor adjustments

* Added the two new demos to the list of examples

* 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 high quality rand() function to common.glsl and an example to show off the noise textures. (#8603)

* create procedural glsl and an example to show off the noise textures.

* add to files.js

* adopt noise procedural in PMREMGenerator.

* fix page title per @arose's suggestion.

* more adoption of procedural.glsl

* remove procedural.glsl, add a single line to common.glsl.  Update other files as needed.

* cleanup shaders to use common.glsl

* tabify.

* avoid collapsing into a single function - @WestLangley recommendations

* more adoption of tabs.

* fix tabs.

* working on depth texture

* working on depth texture

* support depth texture in webgl1 and webgl2

* fix comments

* reset build to avoid diff noise

* add check for webgl2 context

* fix depth texture example

* animation for example

* add file

* add depthTexture to WebGLRenderTarget

* ensure depth format returns correct GL parmaeter

* use null for initial depthTexture value

* add some commented out code

* special purpose materials.

* rename example from special_purpose -> channels.  Add camera controls.

* minor polish to webgl_materials_channels.

* add standard material with displacement, normal and ao to show contract with normal and depth materials.

* fix orthographic camera near/far bounds.

* remove double add of material_channels example.

* Implemented user-defined clipping planes.

* Renderer: Minor documentation update.

* Implements object-level clipping.

* Renderer: Minor cosmetic changes.

* Fixed lethal typo in normal shader.

* Let shadows respect .side of object's material.

* Fixed Plane.applyMatrix4.

- Scale denormalized but did not scale the position
- Projection is not supported (solved by documentation)
- Removed unnecessary copying to make up for the normalization
- Still arguably too heavy

* Added custom clipping example.

* Clipping: Fixed transition to disabled state.

* Improved custom clipping example.

- GUI dependency of volume visualization on Enabled state
- Larger radius for cylindrical global clipping area

* No .matrixAutoUpdate = false in clipping example.

* Let ShadowMap check renderer.localClippingEnabled.

* Added a simplified clipping example.

adds both new spotlight examples