PRTT: Precomputed Radiance Transfer Textures

Autor:	Dhawal, Sirikonda, KT, Aakash, Narayanan, P. J.
Rok vydání:	2022
Předmět:	Computer Science - Graphics
Druh dokumentu:	Working Paper
Popis:	Precomputed Radiance Transfer (PRT) can achieve high quality renders of glossy materials at real-time framerates. PRT involves precomputing a k-dimensional transfer vector of Spherical Harmonic (SH) coefficients at specific points for a scene. Most prior art precomputes transfer at vertices of the mesh and interpolates color for interior points. They require finer mesh tessellations for high quality renderings. In this paper, we explore and present the use of textures for storing transfer. Using transfer textures decouples mesh resolution from transfer storage and sampling which is useful especially for glossy renders. We further demonstrate glossy inter-reflections by precomputing additional textures. We thoroughly discuss practical aspects of transfer textures and analyze their performance in real-time rendering applications. We show equivalent or higher render quality and FPS and demonstrate results on several challenging scenes. Comment: Eurographics 2022 - Poster
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2203.12399 Zobrazit plný text záznamu View this record from Arxiv