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DX11 Real-Time Raytracing Tech Demo Running on a i7 + Radeon 5870
- Thread starter onQ123
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I was completely fooled by that video for a good while there. It looks very nice.
LukasTaves
Member
Looks incredible. And it seems really smooth.
That's a gob stopping bit of tech-demo.
But you gotta realize that the scene is also exemplary for the strengths of ray-tracing... namely reflective surfaces.
In other real time ray-tracing demos, it's not significantly improved upon what we've already been shown in other real time demos - because the technology has just come that far that few obvious benefits are left for such a computing intensive way of rendering a scene.
The main difference you'll see between existing advanced engines (UE4, luminous, cryengine 3, etc) and a real time ray-tracing engine, outside of much nicer reflections - is just a better sense of cohesion in the visuals... elements like bloom and shadows don't result from seperate techniques and algorithms overlaid and blended ontop of each other - they come from the same thing.
But even real time reflections in UE4, luminous, etc have gotten pretty good already.
For the most part, I'd like to see this tech been applied to 3D modelling and rendering packages. A much more WYSIWYG experience would just make the task of working in those packages that much more joyful.
But you gotta realize that the scene is also exemplary for the strengths of ray-tracing... namely reflective surfaces.
In other real time ray-tracing demos, it's not significantly improved upon what we've already been shown in other real time demos - because the technology has just come that far that few obvious benefits are left for such a computing intensive way of rendering a scene.
The main difference you'll see between existing advanced engines (UE4, luminous, cryengine 3, etc) and a real time ray-tracing engine, outside of much nicer reflections - is just a better sense of cohesion in the visuals... elements like bloom and shadows don't result from seperate techniques and algorithms overlaid and blended ontop of each other - they come from the same thing.
But even real time reflections in UE4, luminous, etc have gotten pretty good already.
For the most part, I'd like to see this tech been applied to 3D modelling and rendering packages. A much more WYSIWYG experience would just make the task of working in those packages that much more joyful.
Looks cool, but need to see some other scene. Until then...
http://www.youtube.com/watch?v=6_DrgiwLABk
http://www.youtube.com/watch?v=gZlCWLbwC-0&feature=related
http://www.youtube.com/watch?v=6_DrgiwLABk
http://www.youtube.com/watch?v=gZlCWLbwC-0&feature=related
endresults
Member
iamshadowlark
Banned
Pretty nice. I would love some info though.
endresults
Member
Carmack's take on Ray-tracing: http://raytracey.blogspot.com.au/2011/08/john-carmack-eventually-ray-tracing.html
I thought i7s were overrated...why isn't he using a i5....could've save some cash.
or at least that is what message forums have told me.
edit- His GTA4 vid is amazing.... next gen is already here..I've been missing out.
or at least that is what message forums have told me.
edit- His GTA4 vid is amazing.... next gen is already here..I've been missing out.
DemonCleaner
Member
what about realistic lights and shadowing and natural materials? thats still the biggest difference that serparates rasterization from cg nowadays...
Vulcano's assistant
Banned
Loot in Diablo V better look like that.
I know, I know; how they look has little to do with what's being showcased.
les papillons sexuels
Banned
the nice thing about raytracing is that it scales really well to larger scenes.
Koopakiller
Banned
Incredible
Hoping we get this tech next-gen
Hoping we get this tech next-gen
Some day, real-time path tracing will look something like this:
http://www.youtube.com/watch?v=MHP0E65vap4
http://www.youtube.com/watch?v=MHP0E65vap4
mclaren777
Member
I hope developers prioritize animation and physics over graphics in the next generation.
onesvenus
Member
It does?? Although the ammount of rays you fire is the same for a fixed resolution, the ray traversal gets slower and slower with bigger scenes and ray depth even when using space partition tecniques to decide which triangles to check with the ray-triangle intersection test.
j0hnny_385
Member
Reality = overrated.
O_O
O_O
True, but the cost of each ray traversal only increases by the log of the total number of polygons in the scene. With rasterization, rendering costs increases linearly with the number of polygons.
10 fps on two 580s? damn.
Koopakiller
Banned
But imagine this thing running on 3x 580's :O
Feels like we're so so close, doesn't it? And if we're this close, next-gen machines need to have this tech because as nice as Epics global illumination tech looks, it doesn't get close to this.
EatChildren
Currently polling second in Australia's federal election (first in the Gold Coast), this feral may one day be your Bogan King.
It would be a lot more impressive if it used some form of BRDF to render the materials instead of making everything perfectly specular. Mirror surfaces take the least amount of samples to look good.
At least that's already happening with renderers like octance render or blender cycles
At least that's already happening with renderers like octance render or blender cycles
deathkiller
Member
The total rendering cost/time doesn't increase linearly with the number of polygons since the rasterization is only a small part of the total cost and the "only increases by the log of the total number of polygons in the scene" only applies to static polygons.
For animated characters you need to process every polygon either way because you don't know before hand where will it end.
Was this ray-tracing (and real-time HDR) in the GT5
Of course not.
Canis lupus
Member
I wonder how ray tracing is on the latest high end gpus?
yes ,it is .Technically it's (baked ) raytracing (camera mapping) + Realtime HDR.
Was this ray-tracing (and real-time HDR) in the GT5
nope. PD are amazing because their texture and shader work.
And GT5 has FP32 HDR (128bit) which is amazing if you know what it mean (And a lot of wow factor comes from that)
There's a tiny real time ray tracing demo downloadable here, for those interested. Third one from the top.
Downloading now , hope this does not fry my 680 lol.
efyu_lemonardo
May I have a cookie?
iamshadowlark
Banned
The problem with that is that everytime it gets realized, game complexity rises making it impractical again.
You rarely move the whole scene. Only a few characters/items at a time are moving.
Right now, animated scenes are still the land of rasterization, but I hear that they are making progress on updating accelerating structures for ray traversals.
Graphics Horse
Member
Was this ray-tracing (and real-time HDR) in the GT5
As far as I can tell it's just IGN bullshit which still somehow persists to this day. Is there anything there which looks different to compared to on track shots?
Well refractive in this case, if there's any ray tracing going on here that isn't pointless, it's for the refractions in translucent surfaces, because the only reflections seem to be of an HDRI map, and the old mirrored floor trick, both of which lots of games do already.
Not sure how much of the demo is ray-traced.
From get go it is clear that it uses traditional image based DoF like games do and not sending rays from area of a lens. (like it's properly done in ray-tracers.)
My guess is that it's a either simple ray-tracer with refractions/reflections and shadows or hybrid renderer where reflections/refractions and perhaps shadows are traced.
And yes, ray-tracing has been possible for a long time and simple versions have been used in games for a years. (All those Parallax Mapping methods are simple tracers..)
Samatarian demo used raytracing of billboards for specular reflections. (up to 4? guads per pixel)
Unreal Engine 4 has cone tracing of voxels for creating that good looking global illumination and specular.
From get go it is clear that it uses traditional image based DoF like games do and not sending rays from area of a lens. (like it's properly done in ray-tracers.)
My guess is that it's a either simple ray-tracer with refractions/reflections and shadows or hybrid renderer where reflections/refractions and perhaps shadows are traced.
And yes, ray-tracing has been possible for a long time and simple versions have been used in games for a years. (All those Parallax Mapping methods are simple tracers..)
Samatarian demo used raytracing of billboards for specular reflections. (up to 4? guads per pixel)
Unreal Engine 4 has cone tracing of voxels for creating that good looking global illumination and specular.
There certainly was not a single evidence in garage view for it, which is fail considering how low hanging fruit proper sharp reflection is..
Yup because making a game with those visuals won't take long at all right ?
Those red chairs don't look natural at all FWIW, still interesting though.
iamshadowlark
Banned
How does this change what he said?
Metalmurphy
Member
It's not IGN bullshit, I remember someone from PD saying in an interview that not only was it using tracing it was also full 1080p (unlike during gameplay where it's upscaled) and how proud they were of that scene.
iamshadowlark
Banned
You won't see this in games if thats what you are asking.