Improve regl-renderer to better reuse same geometry with different location or color

jscad / OpenJSCAD.org

JSCAD is an open source set of modular, browser and command line tools for creating parametric 2D and 3D designs with JavaScript code. It provides a quick, precise and reproducible method for generating 3D models, and is especially useful for 3D printing applications.

https://openjscad.xyz/

MIT License

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Improve regl-renderer to better reuse same geometry with different location or color #806

Open hrgdavor opened 3 years ago

hrgdavor commented 3 years ago

Expected Behavior

Fast change of colors on colorcube example at jscad

Actual Behavior

slower than expected

Steps to Reproduce the Problem

load https://openjscad.xyz/?uri=https://openjscad.xyz/examples/core/colors/colorCube.js
change parameters
wait for update on screen

Specifications

The colorcube example will also likely benefit from #805

Version: V2
Platform: all
Environment: all

hrgdavor commented 3 years ago

The concept that can provide this is instancing and is only available in wegl2.

To implement at some point in regl-rendere maybe

new draw command is needed
code that groups geometries
a fallback to current method of drawing them when webgl2 is not supported

It may have too many obstacles in regl to implement, so it would have to be considered carefully before committing to do it.