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OpenGL Performace Meassurement Tool
Rehorčík, Pavol ; Polok, Lukáš (referee) ; Pečiva, Jan (advisor)
This thesis talks about theoretical and practical side of development of testing application for OpenGL performance with focus to shaders. In theoretical part are individually described used techniques and principle of usage of shaders. The core of thesis is practical part, so creation and implementation of this application. In final part I discuss measured results and possible extensions.
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Shadow Rendering from Omnidirectional Light Sources
Mikulica, Tomáš ; Kobrtek, Jozef (referee) ; Navrátil, Jan (advisor)
This work discusses the possibilities for shadow rendering from omnidirectional light sources using OpenGL library. In this work the Cube map shadow mapping and the Dual paraboloid shadow mapping algorithms are described. Further more, this work contains the results of a comparison of these two methods in a way of time required for shadow map creation and a comparison of visual quality of resulting shadows.
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GPU Raytracer for OSG
Kantor, Jiří ; Horváth, Zsolt (referee) ; Starka, Tomáš (advisor)
This work describes creation of a simple raytracer for OpenSceneGraph, which performs its operations on the graphics card. Things, that needed to be done in OpenSceneGraph in order to pass data to the GPU and also several ray-triangle intersection methods, are described in this work.
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Animated Skybox Using OpenGL
Pavlík, Vít ; Kobrtek, Jozef (referee) ; Milet, Tomáš (advisor)
The Bachelor's diploma thesis addresses the operation of generating an animated skybox. The thesis was intended to demonstrate the methods, especially the procedural methods, for generating skybox applications. The main deal of the paper is devoted to an analysis of fundamental techniques for rendering particular components within a skybox application. The utmost focus is put on processes of generating colour gradients, noise functions and ways of applying thereof. Concluding part comprises an analysis of study trials to investigate different graphics content generating settings, and implementation details.
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Advanced Rendering in OpenSceneGraph Library
Ondruška, Jiří ; Přibyl, Jaroslav (referee) ; Švub, Miroslav (advisor)
This bachelor's thesis presents OpenSceneGraph library and its use with shaders written in OpenGL Shading Language. First of all it presents the basics of GLSL. Next chapter introduces the basics of OpenSceneGraph library. Following chapters are about different shaders. First is vertex displacement mapping, followed by cartooning and the last one is water surface.
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Vertex/Pixel Shaders in Realtime Rendering
Ligmajer, Jiří ; Havel, Jiří (referee) ; Švub, Miroslav (advisor)
My bachelor's thesis is about vertex and pixel shaders. It is engaged in evolution, funcionality and usage of shaders in realtime graphics. This bachelor's thesis also includes tutorials, that are describing theory and implementation of three realtime rendering techniques, which were chosen by me. Results of my realtime techniques are evaluated at the end of my book.
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Programmable Shaders in OpenGL
Radil, Přemek ; Havel, Jiří (referee) ; Švub, Miroslav (advisor)
OpenGL is mostly used in video games, computer aided designs, virtual reality, flight simulations or scientific visualisations. This bachelors thesis puts mind to production of shaders written in OpenGL Shading Language and their attachment to OpenGL aplications. Its objective is to describe methods of creating depth of field, glow and soft shadows effects and to provide tutorial about these methods. First chapters informs about OpenGL and associated library OpenGL Utility Toolkit and illustrates some common procedures necessary to achieve hereinbefore mentioned effects. Last chapters dwells directly on shaders creating these effects.
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Programmable Shaders in OpenSceneGraph
Czompál, Zsolt ; Španěl, Michal (referee) ; Švub, Miroslav (advisor)
Graphic processors, that are used nowadays, have programmable units called shaders. By programming these units we can achieve better results in graphical applications, than by running the effect or the program on the processor. There are different programming languages for programming these units. In this thesis I have chosen the language GLSL with OpenSceneGraph API. The main point of the following capitols is to demonstrate how do shaders work with OpenSceneGraph, and the implementation of common graphic effects.
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Advanced Rendering Techniques in OpenGL 2.0
Salajka, Vojtěch ; Havel, Jiří (referee) ; Švub, Miroslav (advisor)
This thesis deals with the interactive computer graphics on programmable hardware. The usage of shaders for creation of graphic effects is demonstrated by examples. It is explained how to use OpenGL library and GLSL language for their implementation. A new 3D model format was developed for the purposes of the examples.
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Performance Evaluation of Graphics Accelerator
Vanek, Juraj ; Jošth, Radovan (referee) ; Herout, Adam (advisor)
This paper deals with possibilities and functions of modern graphic accelerators and with measuring performance under OpenGL interface. Widespread algorithms to render scene in real-time are used. It focuses on how to test every part of accelerator's graphic pipeline as well as measure performance in rendering of advanced effects and theoretical speed at general purpose calculations through graphic processor. This testing is realized by implementing multiple test series and their further evaluation. Final application enables setting of test parameters and outputs a score, by which is possible to judge accelerator's performance in comparison among themselves.
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