Texgen.js – Lightweight Procedural Texture Generator

Re:Texgen.js – Lightweight Procedural Texture Generator by mrdoob2 on Sunday January 25, 2015 @09:04PM (#8945215)

I did it like this because I wanted to create the drawing loop as efficient as possible, without switches or conditionals. That method gets executed per pixel so the less logic the better.

If someone knows a better way I'm all ears!

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Re:Texgen.js – Lightweight Procedural Texture Generator by bgtnhz on Sunday January 25, 2015 @09:09PM (#8945224)

I fail to see the logic behind optimizing around conditionals when you are running in an interpreted language.

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Re:Texgen.js – Lightweight Procedural Texture Generator by mrdoob2 on Sunday January 25, 2015 @09:13PM (#8945233)

I instrumented the code and using conditionals resulted in 2x the generation time per loop. These loops are executed only once so the VM doesn't have a chance to optimise them.

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Re:Texgen.js – Lightweight Procedural Texture Generator by gavanwoolery on Monday January 26, 2015 @12:27AM (#8945644)

I've done similar in the past and can concur that it does have large performance benefits, at least in Chrome where I tested it.

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Re:Texgen.js – Lightweight Procedural Texture Generator by flohofwoe on Monday January 26, 2015 @05:43AM (#8946390)

Stating the obvious, but I'm pretty sure that there are no longer any purely interpreting JS engines around, it's all JIT or AOT compiled, so optimizing for a compilation scenario definitely makes sense.

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Re:Texgen.js – Lightweight Procedural Texture Generator by SixSigma on Monday January 26, 2015 @04:41AM (#8946196)

Testing beats imagination.

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