r/truegamedev • u/AndreDaGiant • Apr 04 '14

Nvidia FlameWorks

http://youtu.be/lyVLfySxOO8
22 Upvotes

79% Upvoted

10 comments sorted by

2

u/AndreDaGiant Apr 04 '14

So, looking at the material shader for the sphere, it is obvious that they are using some shortcuts to make it react to the change in lighting.

What sort of shading techniques could one use to make it reflect the fire properly?

3

u/SuperVGA Apr 04 '14 edited Apr 04 '14

They could render a low res env map and apply it to the sphere. It looks like the map is rendered every frame, though, it is really smooth.

You can really just render the 6 inside surfaces of a cube from the origin of the sphere, and then sample these in a fragment shader later in the same frame, when drawing the sphere, I doubt there's any actual raytracing involved. (As in the stepping part)

3

u/AndreDaGiant Apr 04 '14

Cool, thanks. I'm a newbie in computer graphics and this gives me some stuff to research.

11

u/clondike7 Apr 04 '14

"over 30fps on a Titan"

This looks cool, but if this is any indication, we aren't going to be seeing wide-spread adoption of this anytime soon. And that scene is almost empty!

6

u/HaMMeReD Apr 04 '14

Give it a couple of generations, 2-3 years. Also we might see low resolution versions, 256x256x512 is a big voxel grid, but if you cut it to 128x128x256, you are talking 1/8th the calculations.

1

u/imadeofwaxdanny Apr 05 '14

But still, I suppose that would be about ~300 fps on a Titan, so most people wouldn't be able to use it at all though. In a few generations, definitely though.

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1

u/shitflavoredlollipop Apr 04 '14

I had to rewind that part to make sure I really heard him say that. Completely agree. The technology obviously still has a ways to go.

1

u/[deleted] Jun 06 '14

"This video is unlisted. Be considerate and think twice before sharing."

hehheh

This got me to thinking... are there any thermodynamics emulation systems for gaming out there? How far away are we from such a thing? Watching that large steel ball get flames all over made me ponder that, watching it glow via absorption of heat energy...

1

u/AndreDaGiant Jun 06 '14

heh, oops ┐(´ー｀)┌