Simplify examples code

[gkjohnson]

Examples

• [x] Remove unused / unneeded parameters
• [x] Make code more consistent
• [x] Use async generation
• [x] Provide consistent method for displaying credit, samples.
• [x] Rename variable names to be consistent (const pathTracer)
• [x] Require passing in the WebGLRenderer
• [x] Add ability to "pause" or "disable" path tracing

API

• [x] Support MikkT tangents through the geometry generator.
  • Require use of setMikkTSpace function so it's used during generation.
• [x] Ignore renderer clear color? Default to transparent if no background specified?
• [x] Provide consistent / clear way to "reset" scene. When to use "reset"? When to use "updateScene"? How can we update scene most efficiently.
  • Update Materials
  • Update Camera
  • Update Lights
• [x] Add more and clean up update functions
  • Discover lights in updateLights function
  • Discover textures in update materials
  • Remove deduplication / reordering in texture and ies texture updates since it will break things
• [ ] Add updateScene function
• [ ] Consider removing immediate pass through of data to renderer - store it locally if needed.
• [ ] Automatically reset when parameters change
• [x] Queue resets

[gkjohnson]

Provide consistent / clear way to "reset" scene. When to use "reset"? When to use "updateScene"? How can we update scene most efficiently.

Options

Individual functions

pathTracer.setScene(...);
pathTracer.setSceneAsync( ... );

pathTracer.updateScene();
pathTracer.updateSceneAsync( ... );
pathTracer.updateMaterials();
pathTracer.updateCamera();
pathTracer.updateLights();

Provide options to the update function

pathTracer.updateScene( scene, camera, { updateMaterials, updateCamera, ... } );

Provide a separate function for setting the camera:

pathTracer.updateCamera( camera )

[gkjohnson]

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