6
votes
Accepted
Path Tracing With Multiple Lights
It's not that hard. If you have just planar or angular light sources, you can think of them as one light source split into multiple chunks and the only thing to deal with is how to sample this multi-...
- 1,474
6
votes
Accepted
Mimicking Blender's "roughness" in my path tracer
For explicit light sampling: yep, you just evaluate the BRDF for that incoming direction and the output direction back toward the camera. There's probability involved in the case of an area light: you ...
- 25.3k
5
votes
Accepted
What are the benefits of downscaling on modern games?
What you are describing is supersampling, a technique for combating aliasing (a.k.a. jaggies), which is a term from signal theory that also applies to graphics. It's a spatial domain approach. ...
- 892
5
votes
Which technique should be used for rendering under water images, Ray tracing or Radiosity?
Radiosity is only efficient for diffuse to diffuse rendering. Path tracing is more versatile on the type of light transport that could be computed. The main issue with underwater rendering is the ...
- 76
1
vote
Why are the transformations of an object calculated on CPU?
Wouldn't GPU make those matrix multiplication faster than CPU?
No. GPUs are not a magic "make things go faster" box.
Vertex shaders operate on every vertex. If you render 1 million vertices,...
- 9,997
1
vote
Why are the transformations of an object calculated on CPU?
It is perfectly reasonable to do the multiplication on the GPU. The major reason it is taught this way is partly it is historically standard, but the main reason is if you have a vertex shader that ...
- 3,484
1
vote
What is the name of these software on 2 screen?
Judging by the interface that would be blender:
https://www.blender.org/
Please note that here is a bender-specific stackexchange site as well:
https://blender.stackexchange.com/
- 131
Only top scored, non community-wiki answers of a minimum length are eligible