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Questions tagged [ssao]

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What is the "kernel" in learnopengl SSAO tutorial?

I am currently reading the SSAO tutorial on learnopengl. In it, there is a "kernel" that has the dimension of 64 and contains ...
Raildex's user avatar
  • 173
1 vote
1 answer
265 views

SSAO with reconstructed depths yields strip artifacts

I wrote an ssao algorithm with compute shaders and view-position-reconstruction from the depth buffer. It works great for objects near by but results in strip or banding artifacts for large planes ...
Sprinklerkopf's user avatar
1 vote
0 answers
40 views

Using SSAO For Blended Objects

What is the best (most common) approach using SSAO with forward renderer for blended objects?
Stuart's user avatar
  • 11
1 vote
0 answers
58 views

Why Screen Space effects flicker?

Nowadays is less of an issue, i think SS got massaged a little bit, but you can still spot it. These happen with SS Reflections, SSAO and Bloom. When you move the camera, the effect starts to flciker ...
Matheus Lacerda Bezerra's user avatar
0 votes
2 answers
233 views

Why wasn't CryTek SSAO multiplied by 2?

Screen space ambient occlusion https://learnopengl.com/Advanced-Lighting/SSAO "Because the sample kernel used was a sphere, it caused flat walls to look gray as half of the kernel samples end up ...
macrod's user avatar
  • 11
0 votes
2 answers
287 views

Ambient occlusion depth buffer normalization

Been trying to follow a shader from A Comparative Study of Screen-Space Ambient Occlusion Methods http://frederikaalund.com/wp-content/uploads/2013/05/A-Comparative-Study-of-Screen-Space-Ambient-...
Boinking's user avatar
0 votes
1 answer
342 views

SSAO random noise vector generation

I am currently trying to implement SSAO on my graphics engine. I am following John Chapman's tutorial here. This is a pretty popular article that is used as reference in many SSAO articles. The part ...
kevinyu's user avatar
  • 493
0 votes
0 answers
56 views

Obtaining sample position z value when using positions from depth buffer for SSAO

I was looking to implement SSAO; demonstrated on learnopeng (https://learnopengl.com/Advanced-Lighting/SSAO). While I have implemented the way they have done it i.e using a position texture for ...
user17440's user avatar
0 votes
1 answer
475 views

SSAO - artifacts appearing

I am trying to implement SSAO using DirectX11 but instead I got white screen with few black dots on model. My suspect is that kernel generation or usage might be wrong. I've tried changing order of ...
DirectX_Programmer's user avatar