EGGH02: SIGGRAPH/Eurographics Workshop on Graphics Hardware 2002

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https://diglib.eg.org/handle/10.2312/333

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Browsing EGGH02: SIGGRAPH/Eurographics Workshop on Graphics Hardware 2002 by Subject "Graphics processors"

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    Efficient Partitioning of Fragment Shaders for Multipass Rendering on Programmable Graphics Hardware
    (The Eurographics Association, 2002) Chan, Eric; Ng, Ren; Sen, Pradeep; Proudfoot, Kekoa; Hanrahan, Pat; Thomas Ertl and Wolfgang Heidrich and Michael Doggett
    Real-time programmable graphics hardware has resource constraints that prevent complex shaders from rendering in a single pass. One way to virtualize these resources is to partition shading computations into multiple passes, each of which satisfies the given constraints. Many such partitions exist for a shader, but it is important to find one that renders efficiently. We present Recursive Dominator Split (RDS), a polynomial-time algorithm that uses a cost model to find near-optimal partitions of arbitrarily complex shaders. Using a simulator, we analyze partitions for architectures with different resource constraints and show that RDS performs well on different graphics architectures. We also demonstrate that shader partitions computed by RDS can run efficiently on programmable graphics hardware available today.
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    Interactive Rendering of Atmospheric Scattering Effects Using Graphics Hardware
    (The Eurographics Association, 2002) Dobashi, Yoshinori; Yamamoto, Tsuyoshi; Nishita, Tomoyuki; Thomas Ertl and Wolfgang Heidrich and Michael Doggett
    To create realistic images using computer graphics, an important element to consider is atmospheric scattering, that is, the phenomenon by which light is scattered by small particles in the air. This effect is the cause of the light beams produced by spotlights, shafts of light, foggy scenes, the bluish appearance of the earth s atmosphere, and so on. This paper proposes a fast method for rendering the atmospheric scattering effects based on actual physical phenomena. In the proposed method, look-up tables are prepared to store the intensities of the scattered light, and these are then used as textures. Realistic images are then created at interactive rates by making use of graphics hardware.