Questions tagged [global-illumination]

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How to bake ambient light?

I'm working on an indoor maze-like scene, with the only illumination coming from a few static point lights set to either Baked or Mixed mode. Since there are no windows, I'm facing the problem that ...
Zippy1970's user avatar
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-1 votes
1 answer
180 views

Is diffuse reflection definition failed when we see both reflection(diffuse,specular) is happening on one single object?

Let us consider the situation where only we moved the camera. The object and the light source remain in the same place. Thus the angle of the incident light is the same for every point.I have captured ...
S. M.'s user avatar
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1 vote
1 answer
648 views

Why specular reflection portion changes when we move in different direction?

We know that in Specular reflection rays reflected off surface at inverse angle;so camera position matters;creates bright highlights. I have taken one image where specular reflection is seen(Here ...
S. M.'s user avatar
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1 answer
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Unity - Global illumination seems no longer applied to static objects on runtime

First of all I'm newbie with Unity, so please forgive me if the answer of this question is obvious for any experimented developer. So, in one of my project I have this result while I run the project ...
Jean-Milost Reymond's user avatar
0 votes
1 answer
5k views

Baked vs realtime global illumination in unity

I use unity. So far I know that the baked GI is less GPU processing when the game is played so if possible, I need to use baked GI. Newbie question: I'm using unity and just curious in the light ...
andio's user avatar
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1 vote
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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 "...
Nick Bull's user avatar
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3 votes
0 answers
164 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 ...
oliver's user avatar
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1 answer
77 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 ...
Jehy's user avatar
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1 vote
1 answer
212 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 ...
Rafael Sabino's user avatar
3 votes
1 answer
1k 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 ...
Nithin Jose's user avatar
1 vote
0 answers
386 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 ...
Adnan Nazir's user avatar
1 vote
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1k 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 ...
A. Burak Erbora's user avatar
2 votes
1 answer
303 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 ...
ali's user avatar
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0 votes
1 answer
2k 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 ...
Melon Therapy's user avatar
1 vote
0 answers
67 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 ...
Tustin2121's user avatar
7 votes
0 answers
899 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 ...
user2259784's user avatar
0 votes
0 answers
141 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 ...
Adrians Netlis's user avatar
6 votes
4 answers
16k 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 ...
user12979's user avatar
  • 191
2 votes
2 answers
825 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 ...
user12979's user avatar
  • 191
9 votes
1 answer
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 ...
TravisG's user avatar
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3 votes
1 answer
494 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 ...
Simon's user avatar
  • 33
10 votes
1 answer
973 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 ...
TravisG's user avatar
  • 4,402
2 votes
3 answers
378 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. ...
Xavier's user avatar
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8 votes
2 answers
847 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 ...
Xavier's user avatar
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