caa a22 4500 605540586 CHVBK 20210128100912.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00371-014-1021-7 doi (NATIONALLICENCE)springer-10.1007/s00371-014-1021-7 Real-time multiply recursive reflections and refractions using hybrid rendering [Elektronische Daten] [Per Ganestam, Michael Doggett] We present a new method for real-time rendering of multiple recursions of reflections and refractions. The method uses the strengths of real-time ray tracing for objects close to the camera, by storing them in a per-frame constructed bounding volume hierarchy (BVH). For objects further from the camera, rasterization is used to create G-buffers which store an image-based representation of the scene outside the near objects. Rays that exit the BVH continue tracing in the G-buffers' perspective space using ray marching, and can even be reflected back into the BVH. Our hybrid renderer is to our knowledge the first method to merge real-time ray tracing techniques with image-based rendering to achieve smooth transitions from accurately ray-traced foreground objects to image-based representations in the background. We are able to achieve more complex reflections and refractions than existing screen space techniques, and offer reflections by off-screen objects. Our results demonstrate that our algorithm is capable of rendering multiple bounce reflections and refractions, for scenes with millions of triangles, at 720p resolution and above 30 FPS. Springer-Verlag Berlin Heidelberg, 2014 Hybrid rendering nationallicence Real-time nationallicence Ray tracing nationallicence Rasterization nationallicence Reflections nationallicence Refractions nationallicence Ganestam Per Lund University, Ole Römers väg 3, 223 63, Lund, Sweden aut Doggett Michael Lund University, Ole Römers väg 3, 223 63, Lund, Sweden aut The Visual Computer Springer Berlin Heidelberg 31/10(2015-10-01), 1395-1403 0178-2789 31:10<1395 2015 31 371 https://doi.org/10.1007/s00371-014-1021-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00371-014-1021-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ganestam Per Lund University, Ole Römers väg 3, 223 63, Lund, Sweden aut NATIONALLICENCE 700 1- Doggett Michael Lund University, Ole Römers väg 3, 223 63, Lund, Sweden aut NATIONALLICENCE 773 0- The Visual Computer Springer Berlin Heidelberg 31/10(2015-10-01), 1395-1403 0178-2789 31:10<1395 2015 31 371