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Questions tagged [ambient-occlusion]

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4
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2answers
380 views

Ambient occlusion of a sole object in a scene

So, the german wikipedia states about ambient occlusion:The ambient occlusion method is based on the assumption that an object, a set of objects or an entire scene is surrounded by a unit sphere of ...
1
vote
1answer
59 views

Expected visibility

I want to extend the following to work on a solid angle: Suppose we have a volume filled with small surfaces. If we cast a ray from a given point, the probability that the ray will not hit a surface ...
5
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1answer
297 views

Screen Space Ambient Occlusion Issues

I'm having problems with Ambient Occlusion. I've tried to follow both John Chapman's improvements over the Crytek AO and LearnOpenGL's tutorial of it when I failed to properly obtain the correct ...
8
votes
2answers
612 views

Why is AO considered Post-Processing?

Ambient Occlusion is a physical approximation to occlude ambient light. If ambient light is not considered post-processing, why is AO? Ambient occlusion has the same inputs as regular deferred ...
6
votes
0answers
57 views

Early exit strategy for SSAO

I'm working on an SSAO implementation. I've had an idea to speed it up by having AO fragment shader finish faster for fragments that are not occluded (depending on the scene, this can be a significant ...
6
votes
1answer
1k views

What is Radiosity?

After reading a wikipedia article about Global Illumination It mentions a variety of techniques like Ray Tracing, Path Tracing and Ambient Occlusion. One technique it mentions is Radiosity which I don'...
6
votes
1answer
1k views

Alternatives to Ambient Occlusion

Recently I wanted to improve the lighting in my game engine, naturally I looked towards Ambient Occlusion. I was considering SSAO but are there any better techniques? Maybe some that are Physically ...
1
vote
1answer
646 views

What are some new Real-Time Graphics Rendering Techniques to get closer to real life? [closed]

So recently after implementing PBR in my engine, I was wondering what are some new & old Rendering Techniques that people are implementing and researching to get Real Time Graphics closer to what ...
7
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2answers
1k views

What is the difference between shading and shadowing?

Shading and shadowing are often mentioned in how to create realistic 3D graphics, but the distinction is not clear. Are both responsible for the generation of shadows, or do they refer to the same ...
8
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2answers
321 views

What is ambient occlusion?

Ambient occlusion "is a shading and rendering technique used to calculate how exposed each point in a scene is to ambient lighting. Ambient lighting is regarding to What is ambient lighting?: ... ...
7
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2answers
1k views

Am I missing something for ambient occlusion?

I'm trying to implement ambient occlusion in Python 3 and I'm seeing shadows beneath my reflective spheres but they seem very faint. I'm not sure if that means I've missed something, or if I just have ...