Vykreslování realistické atmosféry

Abstract

Realistic, physically-based rendering of the atmosphere and clouds is a key element for achieving visual fidelity in computer graphics, particularly in interactive applications such as games and simulators. The faithful reproduction of atmospheric phenomena, including light scattering, aerial perspective, and dynamic weather changes, significantly contributes to the immersion and authenticity of virtual worlds. This thesis presents an implementation of modern techniques for rendering a comprehensive atmospheric model, incorporating volumetric clouds. The implemented system is fully dynamic and interactive, enabling seamless time-of-day transitions and the simulation of various weather types in real-time. Emphasis was placed on physical accuracy, high visual quality, and efficiency. Leveraging advanced optimizations and modern graphics APIs, the implementation achieves very good performance. The complete physically-based atmospheric model, encompassing multiple scattering calculations and volumetric cloud rendering, executes in under 1.5 per frame on contemporary hardware. The resulting visual outputs demonstrate a high degree of realism, accurately replicating the complex appearance of the Earth's atmosphere and cloud formations.