Godot 4.0 gets SDF based real-time global illumination • Hacker News Board

Re: Godot 4.0 gets SDF based real-time global illumination

#31

Post by wetmore » Sun, Jun 28, 2020, 4:48 PM UTC

gh123man wrote: post #12

This is super interesting. The first video on the page sheds some light on how this actually works. It seems like they convert the scene into shapes that can be represented via SDF's and smooth min ( https://www.iquilezles.org/www/articles/smin/smin.htm ) them to blend into an approximation of the actual scene. While also capturing some general texture color data to apply and blend into the shapes. I assume the shade…

Re: Godot 4.0 gets SDF based real-time global illumination

#32

Post by wetmore » Sun, Jun 28, 2020, 4:49 PM UTC

wetmore wrote: post #31

gh123man wrote: post #12

This is super interesting. The first video on the page sheds some light on how this actually works. It seems like they convert the scene into shapes that can be represented via SDF's and smooth min ( https://www.iquilezles.org/www/articles/smin/smin.htm ) them to blend into an approximation of the actual scene. While also capturing some general texture color data to apply and blend into the shapes. I assume the shade…

Probably related to http://scholar.google.com/scholar_url?url=https://dl.acm.org...

In video form: https://youtu.be/FkVlF5OzLcM

Re: Godot 4.0 gets SDF based real-time global illumination

#33

Post by Rusky » Sun, Jun 28, 2020, 4:52 PM UTC

klodolph wrote: post #27

hellofunk wrote: post #24

Earlier quoted context omitted.

They explicitly say in the article that it does not involve ray racing, of which ray marching is a subset.

It's possible that "it does not require ray tracing" means that it does not require extensions like RTX. Perhaps it uses voxel cone tracing, which you may say is technically not ray tracing, but if you called it ray tracing you wouldn't exactly be wrong either.

The article contrasts this approach with voxel cone tracing, so it's not that either.

Re: Godot 4.0 gets SDF based real-time global illumination

#34

Post by barbecue_sauce » Sun, Jun 28, 2020, 5:18 PM UTC

seelion wrote: post #21

PavleMiha wrote: post #19

Earlier quoted context omitted.

Not sure what market you mean, Unity has a larger marketshare. Can't find a good source for numbers but a lot of places are quoting that Unity has 48% of the total market and Unreal has 13%. Also not sure how this is being measured, but in my experience Unity is more popular.

Numbers are misleading here. I don't have any stats but I think Unreal games make more money.

But the market here is game developers, not people who buy the games that developers make.

Re: Godot 4.0 gets SDF based real-time global illumination

#35

Post by ngold » Sun, Jun 28, 2020, 5:19 PM UTC

mhh__ wrote: post #3

leetrout wrote: post #2

> Tim Sweeney and Epic Games for their confidence in helping us finance our research via Epic Megagrant. That’s interesting. Since this is all open source I guess Epic could potentially benefit from this... It’s nice to see they funded another engine.

From a business perspective, Unreal doesn't really do 2D as per se (Whereas Godot is very simple to use) so improving Godot keeps people away from other tools like Unity which do have features that compete with Unreal.

As a unity developer I'm drooling at godot. I can't wait to jump ship to open source. Don't get me wrong unity is great, but godot is super compelling.

Re: Godot 4.0 gets SDF based real-time global illumination

#36

Post by philipov » Sun, Jun 28, 2020, 5:31 PM UTC

barbecue_sauce wrote: post #34

seelion wrote: post #21

Earlier quoted context omitted.

Numbers are misleading here. I don't have any stats but I think Unreal games make more money.

But the market here is game developers, not people who buy the games that developers make.

I think the metric Epic would be interested in would be the amount of royalties they would collect, so it would include the number of developers scaled by the financial success of their games. The financial success of the developers whose market share you capture matters a lot.

Godot is more likely to be used by people whose games wouldn't earn enough to cross the threshold where they would owe money to Epic had they used UnrealEngine, so keeping them away from Unity makes a lot of sense.

Re: Godot 4.0 gets SDF based real-time global illumination

#37

Post by gh123man » Sun, Jun 28, 2020, 5:45 PM UTC

klodolph wrote: post #27

hellofunk wrote: post #24

Earlier quoted context omitted.

They explicitly say in the article that it does not involve ray racing, of which ray marching is a subset.

It's possible that "it does not require ray tracing" means that it does not require extensions like RTX. Perhaps it uses voxel cone tracing, which you may say is technically not ray tracing, but if you called it ray tracing you wouldn't exactly be wrong either.

This was my interpretation. If you want to get technical, Ray tracing != path tracing != ray marching. However people often use them interchangeably.

Re: Godot 4.0 gets SDF based real-time global illumination

#38

Post by capableweb » Sun, Jun 28, 2020, 5:47 PM UTC

ngold wrote: post #35

mhh__ wrote: post #3

Earlier quoted context omitted.

From a business perspective, Unreal doesn't really do 2D as per se (Whereas Godot is very simple to use) so improving Godot keeps people away from other tools like Unity which do have features that compete with Unreal.

As a unity developer I'm drooling at godot. I can't wait to jump ship to open source. Don't get me wrong unity is great, but godot is super compelling.

I'm someone who isn't at all knowledgeable about game development nor its industry, so forgive my ignorance, but what are you waiting for specifically?

Re: Godot 4.0 gets SDF based real-time global illumination

#39

Post by RMPR » Sun, Jun 28, 2020, 5:53 PM UTC

ngold wrote: post #35

mhh__ wrote: post #3

Earlier quoted context omitted.

From a business perspective, Unreal doesn't really do 2D as per se (Whereas Godot is very simple to use) so improving Godot keeps people away from other tools like Unity which do have features that compete with Unreal.

As a unity developer I'm drooling at godot. I can't wait to jump ship to open source. Don't get me wrong unity is great, but godot is super compelling.

There's one thing that make me reluctant to use Godot though and it's GDScript.

Edit: Seems like it's not a problem anymore, can't wait to try again.

Re: Godot 4.0 gets SDF based real-time global illumination

#40

Post by shmerl » Sun, Jun 28, 2020, 5:54 PM UTC

mhh__ wrote: post #3

leetrout wrote: post #2

> Tim Sweeney and Epic Games for their confidence in helping us finance our research via Epic Megagrant. That’s interesting. Since this is all open source I guess Epic could potentially benefit from this... It’s nice to see they funded another engine.

From a business perspective, Unreal doesn't really do 2D as per se (Whereas Godot is very simple to use) so improving Godot keeps people away from other tools like Unity which do have features that compete with Unreal.

Godot will get to the point of competing with Unreal, no doubt about it. Especially since Epic do a poor job at making Vulkan renderer in Unreal work well, and Godot invested in Vulkan all the way.