2 registered members (Akow, tomaslolo),
1,536
guests, and 12
spiders. |
Key:
Admin,
Global Mod,
Mod
|
|
|
Screen Space Ambient Occlusion Solution
#225125
09/02/08 22:27
09/02/08 22:27
|
|
Joined: Apr 2008
Posts: 235 TEXCOORD3
OP
Member
Screen Space Ambient Occlusion Solution
hello, I present to you the 4th version of my SSAO shader. NOTE: I HAVE NOT PROGRAMMED DEPTH EDGE REMOVAL YET.
This shader uses a state-of-the art post-processing pass to find a general global illumination solution for the ambient term.
My shader is several times faster than the shader presented by Crytek. I use advance polygon to pixel derivatives to control 4 ray traces in the pixel shader to calculate the difference between the possible and definate intersections of back-face culled objects in screen space.
I use a linear rotation kernal to prevent noise collection and I therfor do not use a 2nd blurring pass.
The image above also contains 2 projective lights that are dynamically rendering within the image.
Together, I can run 4 instances of SSAO on my 1440x900 pixel screen with a fps of between 25 and 30 fps with 1 million polygons.
My meathod for ambient occlusion collection is original and will be presented in a article within the next few months. Once published, I will offer the source code to the community for free! If you have any questions, please contact me at mauerbach@comcast.net.
-Michael H. Auerbach-
notes: This was done with A7 Gamestudio. Some models are from Dexsoft (industrial pack). My gpu is 1x Nvidia GeForce 8700m GT.
|
|
|
Re: Screen Space Ambient Occlusion Solution
[Re: DoC]
#230776
10/08/08 16:22
10/08/08 16:22
|
Joined: Mar 2006
Posts: 2,503 SC, United States
xXxGuitar511
Expert
|
Expert
Joined: Mar 2006
Posts: 2,503
SC, United States
|
Sorry, but I'm not impressed.
*Attempt at constructive criticism* - From a distance it looks fine, but close up it doesn't look like SSAO at all. It's very... off. It almost looks like a copy blended over itself, shifted slightly. And the actual images are way too dark to see a true result.
xXxGuitar511 - Programmer
|
|
|
Re: Screen Space Ambient Occlusion Solution
[Re: FoxZero]
#236250
11/13/08 01:28
11/13/08 01:28
|
Joined: Jan 2002
Posts: 1,276 trapped in a paper bag
Drew
Serious User
|
Serious User
Joined: Jan 2002
Posts: 1,276
trapped in a paper bag
|
So whats the status of this? did it die?
I would love some AO, so sick of baking...
Last edited by Drew; 11/15/08 02:39.
|
|
|
|