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Rendering of Shadows in a Scene with DirectX
Kobrtek, Jozef ; Havel, Jiří (referee) ; Navrátil, Jan (advisor)
This work discusses shadowing methods, analyses them and describes implementation in DirectX 11 API. Theoretical part describes historical evolution of shadow usage in 3D applications and also analyzes shadowing algorithms. This work compares 2 variants of shadow mapping algorithm for omnidirectional lights, based on cube mapping and paraboloid projection, on demo application using quality, performance and implementation aspects.
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Comparison of Shadow Methods
Kiss, Marcel ; Milet, Tomáš (referee) ; Tóth, Michal (advisor)
This thesis talks about comparison of shadow casting techniques within a scene. In the theoretical part, it describes and compares possible solutions of shadow casting and more detailed about Shadow Mapping and Shadow Volumes, which are among the most commonly used real-time shadowing techniques. The main part is about design and implementation of these two shadow methods using the OpenGL library. In the measurement part it compares methods based on measured values. The outcome of my measurements can be found in the final part of my thesis.
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Modern Methods of Realistic Lighting in Real Time
Szentandrási, István ; Pečiva, Jan (referee) ; Herout, Adam (advisor)
Fyzikálně přijatelné osvětlení v reálném čase je často dosaženo použitím aproximací. Současné metody často aproximují globální osvětlení v prostoru obrazu s využitím schopností moderních grafických karet. Dva techniky z této kategorie, screen-space ambient occlusion a screen-space directional occlusion jsou popsány detailněji v této práci. Screen-space directional occlusion je zobecněná verze screen-space ambient occlusion s podporou jednoho difúzního odrazu a závislostí na směrové informaci světla. Hlavním cílem projektu bylo experimentování s těmito metodami. Pro uniformní distribuci náhodných vzorek pro obě metody byla použita Halton sekvence. Pro potlačení šumu je použita bilaterální filtrace, která bere do úvahy geometrické vlastnosti scény. Metody jsou dál zrychleny použitím nižších rozlišení pro výpočet. Rekonstrukce výsledků do původní velikosti pro vytvoření konečného obrazu je realizována pomoci joint bilateral upsamplingu. Kromě metod globálního osvětlení byly v práci použity aj metody pro mapování stínů a HDR osvětlení.
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Graphics Intro 64kB Using OpenGL
Obrtlík, Petr ; Milet, Tomáš (referee) ; Herout, Adam (advisor)
This bachelor's thesis deals with issue of graphic intro with limited size. The work describes methods used for creating of graphic intro. It deals with procedural generation of objects and textures, simple generation of particles, rendering water surface with reflection and refraction, shadows, lighting, compiler settings and compression output file. The result is a cartoon landscape simulating progress of the day. Created graphic intro have size smaller than 64kB.
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Graphics Intro 64kB Using OpenGL
Minařík, Antonín ; Matýšek, Michal (referee) ; Herout, Adam (advisor)
This thesis deals with creating a graphics intro, which's size has to be below 64~kB. Described and used techniques includes: Phong reflection model, fog, skybox, generating textures from noise and shadow mapping. Intro is placed in a city and techniques of generating elements of the city are described. In addition, there are described methods for reducing file size and system for camera animation.
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Graphics Application in Python Using OpenGL
Szentandrási, István ; Kršek, Přemysl (referee) ; Navrátil, Jan (advisor)
The aim of this work was to study the possibilities of the Python programming language in computer graphics and to determine its competence in this field. To achieve this the cross platform Python binding to OpenGL and related APIs, PyOpenGL was used to create a demo, and compare it in many ways to an implementation of the demo using the standard OpenGL C API. As the result Python was found in average twice as slow as the alternative C~demo and using much more CPU~load. Because of this fact PyOpenGL is not advisable in professional applications. On the other hand Python has an extensive standard library, very useful specialized libraries, simpler syntax, which makes it ideal to use in education.
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Real-Time Volumetric Terrain Rendering
Koblížek, Aleš ; Kobrtek, Jozef (referee) ; Matýšek, Michal (advisor)
Tato práce popisuje způsob implementace volumetrického terénu s důrazem na modifikovatelnost v reálném čase. Použitá datová struktura je bitové pole - materiál terénu není potřeba ukládat, takže pro uložení každého vzorku stačí jeden bit. Textura je odvozována na základě sklonu terénu. Vizualizace se provádí převodem na povrchovou reprezentaci pomocí algoritmu pochodující kostky a následným zobrazením polygonové sítě pomocí vykreslovacího řetězce. Terén i textura jsou generovány procedurálně. Pro rozrušení poměrně pravidelného povrchu je použit displacement mapping a teselace. Jemnější detaily jsou získány pomocí bump mappingu. Pro dynamické stíny je použit shadow mapping.
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Graphics Demo with a Space Theme
Prajka, Martin ; Milet, Tomáš (referee) ; Herout, Adam (advisor)
This bachelor's thesis deals with the creation of graphics demo with unlimited size by using OpenGL. The thesis implements post-processing effects such as shadow mapping, bloom and gaussian blur. In addition, it describes particle system and camera animation. The demo is placed in space and it is separated into the three scenes. The end of the thesis is focused on the results of user's and performance tests.
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Shadow Rendering Using View Frustum Splitting Methods in OpenGL
Roháček, Dominik ; Starka, Tomáš (referee) ; Kobrtek, Jozef (advisor)
The content of this thesis discusses the generation of cascaded shadow maps in 3D applications. It describes two chosen methods of view frustum splitting into sub-frustum and discusses their differences. It was developed an application for analysation purposes in OpenGL which shows their advantages and disadvantages on three testing scenes. This work is focused on a comparison of drawing each split separately and using layered rendering. Data analysis proved some advantages of layered rendering. The PSSM was faster in accord to data analysis, but SDSM, on the other hand, produces more accurate shadows.
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Graphics Intro 64kB Using OpenGL
Minařík, Antonín ; Matýšek, Michal (referee) ; Herout, Adam (advisor)
This thesis deals with creating a graphics intro, which's size has to be below 64~kB. Described and used techniques includes: Phong reflection model, fog, skybox, generating textures from noise and shadow mapping. Intro is placed in a city and techniques of generating elements of the city are described. In addition, there are described methods for reducing file size and system for camera animation.
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