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Questions tagged [global-illumination]

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Self-illumination vs luminance

I'm using a graphics format reading library which has an enum called "MaterialLuminanceMode". There are three luminance modes for materials available: Self-illumination, which I interpret to mean "...
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0answers
33 views

Resolution problems with global illumination in Unity

I am pretty new to Unity and after hours of searching I have finally figured out how to set everything up for (baked) global illumination to work for my model. However the model is an export from a ...
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0answers
23 views

Precomputed realtime global illumination in unity

I'm trying to learn and understand how to use this option in unity and I'm working off the example given in this tutorial https://unity3d.com/learn/tutorials/topics/graphics/introduction-precomputed-...
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1answer
44 views

Unity2D: Sprite Mesh Lighting Issue

I am trying to make my 2D mesh render sprites with the same brightness as the original file. On the below picture, the mesh on the left is darker than the UI Image on the right, which is an exact ...
1
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1answer
103 views

How do I render light propagation volume without aliasing?

I have two major problems in my LPV implementation: The "blockyness" of my LPV light rendering (yes am using trilinear interpolation when sampling for the coefficients) The flickering that happens as ...
4
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1answer
728 views

Baking artifact in Unity

I am using unity 2017.1.0 f3, Enlighten baking, with Generate lightmap UV ticked in import settings. Also the object has prioritized illumination and the light map resolution is high. An example of ...
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0answers
248 views

Lighting, shader and GI is messing up the materials in Unity3D

Hello Guys I am not very sound with Unity3D Lightmapping. Currently I have a set of low poly items in my scene. Textures on my models are getting washed out. They totally look absurd. here is a ...
1
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0answers
887 views

Unity 5 - how to toggle realtime global illumination

I am using Unity 5.5. Is there a way to enable and disable precomputed realtime GI at runtime? and if so, how can I do it? The idea is that I want to set dynamic lights as a graphics quality option ...
2
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1answer
139 views

How to use Bidirectional path tracing on sky dome for rendering indoor

Is it possible to use bidirectional path tracing to render an indoor scene where the light source is skylight(no sun) coming through a window? I think I roughly know how this is done if the light ...
0
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1answer
1k views

Unity - Ambient Occlusion artefacts

When I create two cubes from Unity > Component menu. And turn on AO the bottom cube is not shaded properly. I mean the upper cube is alright but the bottom cube does not have any shadow present. What ...
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0answers
48 views

Can I make global illumination from directional lights only affect their assigned layers?

I have a large space station scene, where there are giant mirrors that are sources of reflected light, and to emulate this, I made directional lights attached to the mirrors with cookies to make them ...
6
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0answers
539 views

Irradiance Map ( Irradiance environment map)?

As irradiance map is generated for every possible normal for all the texels in environment map (as every texel act as a light source) so that we can look up irradiance map, based on normal of fragment ...
0
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0answers
108 views

SSDO as 2D filter

I've been looking for a way to get SSDO as a 2D filter in Blender Game Engine. I know that it is possible, but I have no idea how. And I can't find any good resources online. Maybe someone can help me ...
5
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3answers
8k views

What is the difference between “offline” and “real time” rendering?

I have a rough idea: real-time is approximated with little or no global illumination. But how would you otherwise explain why offline rending takes so much longer? You hear things like "number of ...
2
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2answers
704 views

Can global Illumination via path tracing replace all other current lighting techniques?

In the sense that you currently have algorithms like HDR, shadows, reflections, caustics, motion blur and so on, does complete path tracing take care of all these effects, or would you still have to ...
9
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1answer
1k views

Light Propagation Volumes: Anisotropic filtering of volume data

I've implemented the Cascaded Light Propagation Volumes algorithm (no indirect shadowing yet) for real-time diffuse global illumination detailed here and here. It works fine but I'm still trying to ...
3
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1answer
381 views

Does a game engine affect the quality of pre-baked Global Illumination?

If I were to pre-bake Global Illumination into light maps using a high quality renderer like Mental Ray or PRman, and loaded it into two different engines such as Unity and Unreal, would there be a ...
10
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1answer
902 views

(Realtime-) Global Illumination starting point [closed]

What techniques should someone look at when getting into real time global illumination (for dynamic lighting scenarios)? It's hard to get a real grip on the different mentioned techniques without ...
2
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3answers
271 views

Does radiosity work with skylight?

Does radiosity work with skylight (directional light)? From reading online it sounds like it was intended to work with point lights but I would really like to make it work with skylight if possible. ...
8
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2answers
776 views

Can someone explain radiosity lighting to me?

I already have the basics of ambient occlusion down. I have a raycaster and am capable of shooting rays about a hemisphere uniformly. It seems like those are the basics of what are needed for ...