Beyond3D Forum

Chris · 14-Apr-2003, 22:14

A white paper, executable, and source is available here.

Excerpt from description:
"an engine that is capable of trilinear displacement mapping with depth-adaptive tessellation and this on DX8 capable hardware. The results you can experience with the Xvox demo that shows the case for terrain rendering.

The engine makes heavily use of the vertex shader processors, taking the load off the CPU. The displacement mapping is somewhat comparable to trilinear texture filtering. There are several mip-levels, each at a lower resolution. Instead of texels, the mipmap values now correspond to quadrangle geometry. For texture maps the values are the colors of the texel corners, for displacement maps the values are the height of the quadrangle corners."

Neeyik · 14-Apr-2003, 22:47

Can anyone with a Radeon 8500 run this demo? Playing about with this (with some friends) shows that it scales nicely with the theoretical vertex throughput of each card - ie. a 9700 throughly beats a GF4 which, in turns, beats a GF3. Would be nice to see how an 8500 fits in.

Bambers · 15-Apr-2003, 00:12

61M even beats a 9700

, pity its not actually drawing anything

Its doing something though, moving the mouse changes the TPF, hmmm

Reverend · 15-Apr-2003, 02:23

Hey, I mentioned this back in Nov during the great DM debate !! URLs are different although it's the same author.

Chris · 15-Apr-2003, 06:20

Reverend,

You win

Regards, Chris.

Bambers · 15-Apr-2003, 10:32

My post was for an 8500 btw, I completely forgot to mention that.

Doesn't work properly for some reason and just draws a blank blue screen like in the screenshot

(cat3.2)

Mephisto · 15-Apr-2003, 10:46

Somehow I don't like this "I said it months ago" attitude.

Luminescent · 15-Apr-2003, 12:05

The demo worked perfectly fine at 1280*1024 on my 9800, but I'll try it on my other computer's 8500.

Reverend · 15-Apr-2003, 16:13

Quote:

Originally Posted by Mephisto

Somehow I don't like this "I said it months ago" attitude.

And what attitude would that be?

Cool down... Chris is my B3D colleague and I forgot to add in a smiley in my post.

And, hey, I did say this months ago!!

8)

DeanoC · 15-Apr-2003, 20:12

Neat.

BTW The demo doesn't work on my 9700, I get 500+ FPS but no output.

Ilfirin · 15-Apr-2003, 20:53

You need to look down

j/k

It didn't get an output on my 9700P either until I moved the mouse around a bit.

14-Apr-2003, 22:14	#1
Chris Junior Member Join Date: Oct 2002 Location: Montana, USA Posts: 56	Trilinear displacement mapping with a v1.1 shader A white paper, executable, and source is available here. Excerpt from description: "an engine that is capable of trilinear displacement mapping with depth-adaptive tessellation and this on DX8 capable hardware. The results you can experience with the Xvox demo that shows the case for terrain rendering. The engine makes heavily use of the vertex shader processors, taking the load off the CPU. The displacement mapping is somewhat comparable to trilinear texture filtering. There are several mip-levels, each at a lower resolution. Instead of texels, the mipmap values now correspond to quadrangle geometry. For texture maps the values are the colors of the texel corners, for displacement maps the values are the height of the quadrangle corners."

15-Apr-2003, 02:23	#4
Reverend Naughty Boy! Join Date: Jan 2002 Posts: 3,266	Hey, I mentioned this back in Nov during the great DM debate !! URLs are different although it's the same author. __________________ Reverend Dev Anon : Best game ever? Hmm... you mean other than anything from us? (2005)

15-Apr-2003, 12:05	#8
Luminescent Senior Member Join Date: Aug 2002 Location: Miami, Fl Posts: 1,036	The demo worked perfectly fine at 1280*1024 on my 9800, but I'll try it on my other computer's 8500. __________________ "Friendship is unnecessary, like philosophy, like art... It has no survival value; rather it is one of those things that give value to survival." -C.S. Lewis

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14-Apr-2003, 22:47	#2
Neeyik Homo ergaster Join Date: Feb 2002 Location: Cumbria, UK Posts: 1,231	Can anyone with a Radeon 8500 run this demo? Playing about with this (with some friends) shows that it scales nicely with the theoretical vertex throughput of each card - ie. a 9700 throughly beats a GF4 which, in turns, beats a GF3. Would be nice to see how an 8500 fits in.

15-Apr-2003, 00:12	#3
Bambers Member Join Date: Mar 2002 Location: Bristol, UK Posts: 781	61M even beats a 9700 , pity its not actually drawing anything Its doing something though, moving the mouse changes the TPF, hmmm

15-Apr-2003, 06:20	#5
Chris Junior Member Join Date: Oct 2002 Location: Montana, USA Posts: 56	Reverend, You win Regards, Chris.

15-Apr-2003, 10:32	#6
Bambers Member Join Date: Mar 2002 Location: Bristol, UK Posts: 781	My post was for an 8500 btw, I completely forgot to mention that. Doesn't work properly for some reason and just draws a blank blue screen like in the screenshot (cat3.2)

15-Apr-2003, 10:46	#7
Mephisto Member Join Date: Feb 2002 Posts: 200	Somehow I don't like this "I said it months ago" attitude.

15-Apr-2003, 20:12	#10
DeanoC Senior Member Join Date: Feb 2003 Location: Sheppey, UK Posts: 1,439	Neat. BTW The demo doesn't work on my 9700, I get 500+ FPS but no output.

15-Apr-2003, 20:53	#11
Ilfirin Join Date: Jul 2002 Location: NC Posts: 425	You need to look down j/k It didn't get an output on my 9700P either until I moved the mouse around a bit.

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