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  • 2019 (1)
  • 2022 (1)

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  • Bachelor Thesis (1)
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Simulation von Rauch (2019)
Gaida, Sebastian
This bachelor thesis deals with the simulation of smoke in a particle system. Here the possibilities are investigated to implement smoke as realistically as possible in a particle system and to calculate it in real time. The physical simulation is based on the work of Müller and Ren, who deal with the physical properties of fluids and gases. The simulation was implemented on the GPU using C++, OpenGL and the compute shaders available in OpenGL. Special attention was paid to the performance of the simulation. Hoetzlein techniques are used to accelerate the particle system. Two acceleration methods were then implemented and compared. The runtime, but also the used memory space of the GPU is discussed.
Real-Time Implementation of OpenVDB Rendering (2022)
Gaida, Sebastian
In this thesis the possibilities for real-time visualization of OpenVDB files are investigated. The basics of OpenVDB, its possibilities, as well as NanoVDB and its GPU port, were studied. A system was developed using PNanoVDB, the graphics API port of OpenVDB. Techniques were explored to improve and accelerate a single ray approach of ray tracing. To prove real-time capability, two single scattering approaches were also implemented. One of these was selected, further investigated and optimized to achieve interactive real-time rendering. It is important to give artists immediate feedback on their adjustments, as well as the possibility to change all parameters to ensure a user friendly creation process. In addition to the optical rendering, corresponding benchmarks were collected to compare different improvement approaches and to prove their relevance. Attention was paid to the rendering times and memory consumption on the GPU to ensure optimal use. A special focus, when rendering OpenVDB files, was put on the integrability and extensibility of the program to allow easy integration into an existing real-time renderer like U-Render.
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