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Questions tagged [volumetric-light]

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Writing an underwater wave water refraction shader

While there are plenty of online tutorials out there on underwater effects very few of them help with creating the effect of being near the surface where volumetric rays are cast down and when you ...
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1answer
88 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 ...
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Atmospheric scattering and fog

I've implemented a dynamic sky model (Preetham). I've got Rayleigh and Mie scattering working fine, but I'm not sure how to get the foggy effects in this Unity article Here is what I have so far: ...
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1answer
282 views

Generate Mesh of Shadow Volume

Given a mesh, I want to generate another mesh that is effectively a shadow volume of this mesh. I am looking for an algorithm/solution/implementation/reference that can do this under the following ...
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1answer
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Volumetric Lighting projects models

I've been trying to implement Volumetric Lighting using the code from this tutorial but I've run into some issues, even after basically copypasting the shader code. I'll just show you what's going ...
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1answer
1k views

How do I render a volumetrically lit spotlight?

To be clear, I really do mean volumetric lighting; not only calculating which area is lit, but also realistically lighting the volume of "air" that the light hits on the way. Like this: I've tried ...
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Implementing Light Volume Front Faces

I recently read an article about light indexed deferred rendering from here: http://code.google.com/p/lightindexed-deferredrender/ It explains its ideas in a clear way, but there was one point that ...
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1answer
895 views

How can I achieve the realtime clouds/sky effect of Lumion?

Does anyone know how they do this? They're not truly volumetric - you can't fly through them - it's still a texture. http://vimeo.com/16534222 It looks like it's a perlin based solution, but I ...
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624 views

Computing volumetric light effects analytically

In my previous question I have asked about an effect on how to visualize light spheres. The question resulted in a very nice formulated answer which described pretty well how to achieve this by adding ...
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571 views

Multiple volumetric lights

I recently read this GPU GEMS 3 article Volumetric Light Scattering as a Post-Process. I like the idea to add volumetric light property to realtime render i'm working on. Question is will it work for ...