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Questions tagged [simulation]

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1 vote
0 answers
40 views

How to create a more photorealistic ocean?

Photorealism has many elements. Take, for instance, the figure 1 below, a shot from Dune Part One movie. Figure 1 The process of production of a image such as this one, is laborious and involve more ...
M.N.Raia's user avatar
  • 111
0 votes
0 answers
96 views

My n-body simulation doesn't form a galaxy

I'm trying to create a galaxy simulation using opengl with the compute shader and when I start my simulation, the galaxy with the spiral arms doesn't form, instead it goes into chaos. I noticed that ...
Sedenion's user avatar
0 votes
0 answers
29 views

Simulating a moving catheter inside a human heart

I'm trying to simulate a moving catheter inside a human heart. I want to accurately model the behaviour of the catheter and I assume the heart to be solid. What I want is, when the catheter hits the ...
Optimus's user avatar
  • 101
0 votes
1 answer
54 views

What is the difference between particles system and smoothed particles hydrodynamic?

What is the difference between particles system and smoothed particles hydrodynamic(SPH) ? is SPH a more specific version of particles system ? More searches on google I do more confusing I get since ...
ahmad alghadban's user avatar
3 votes
1 answer
280 views

Problem when performing IFFT for Tessendorf's ocean waves

I am implementing Jerry Tessendorf's ocean waves as described in his paper in c++ and OpenGL. I implemented two compute shaders, one for the h_tilde_0 and its conjugate, and one for the frequency ...
Facundo Pedro Astiz Meyer's user avatar
0 votes
2 answers
99 views

What exactly is it about reality that is so difficult to recreate in a 3D simulation?

I have to admit that, while watching footage of the enhanced 2020 version of the 2018 game Forza Horizon 4, when they are driving fast, I have to sometimes remind myself that I am watching a video ...
Nassen's user avatar
  • 1
3 votes
2 answers
7k views

Optimizing compute shader with thread group shared memory

I'm currently learning compute shaders and I'm trying to write an optimized Game Of Life. I have a first version working that uses a Shader Storage Buffer Object. I dispatch a thread per cell I want ...
François Guthmann's user avatar
0 votes
0 answers
118 views

Confusion about the concepts of "constraint-based" and "impulse-based" for rigidbody simulation

Thanks a lot for your attention to this question in advance! It is my first try to ask for help on this amazing StackExchange. If I do something inappropriate, please point it out directly so that I ...
Xudong's user avatar
  • 1
4 votes
1 answer
54 views

Finite difference wave equation shown in paper is wrong?

I'm trying to produce wave surface animations, and I came across this paper: Fast_Water_Animation_Using_the_Wave_Equation_with_Damping. In the paper they go to provide the following equation: At ...
Krupip's user avatar
  • 280
0 votes
0 answers
69 views

What is it that really prevents photo-realistic, real-time, digital 3D simulations?

Ever since I was a small child, seeing the amazing 3D visuals that developed in the 1980s and 1990s, I was certain that photo-realism was "just around the corner". In the year 2020, I certainly ...
Riston's user avatar
  • 1
2 votes
1 answer
132 views

Represent shape as particles

Input: Triangles which make up an arbitrary shape. Each triangle is represented by 3 3D points. Output: A set of particles which fills up the inside of the object (see image). I have read the ...
coder1337's user avatar
2 votes
0 answers
61 views

Vertex positions from particle position

I have a question about Nvidia Flex or any particle based simulation in general: The particles are created by sampling the mesh, which can result in fewer particles than there are vertices in the ...
Jojo's user avatar
  • 121
6 votes
1 answer
215 views

Does MRG32k3a compare well with PCG and Xorshift256*?

I've been using standard 32-bit Xorshift in my GPU path-tracer for a while, following Nathan Reed's approach with hashed seeds and decorrelated state. I (finally) discovered today that Xorshift is ...
Paul Ferris's user avatar
1 vote
1 answer
256 views

How to simulate elastic material with restoring shape

I'd like to simulate a rubber-like material. This material if deformed would experience a restoring force to its original shape, a bit like a school rubber ereaser. I tried with a spring-mass system ...
Luca Punes's user avatar
-1 votes
1 answer
59 views

Cloud simulation software [closed]

I have ever browsed a website focusing on cloud (cloud in the sky, not cloud computing) simulation. That's a company devoted to developing cloud simulation software and offer cloud simultation ...
chaosink's user avatar
  • 591

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