Memory-optimized Order-independent Transparency with Dynamic Fragment Buffer

Marilena Maule (UFRGS), Rafael Torchelsen (UFFS), Rui Bastos (NVIDIA), João L. D. Comba (UFRGS)
In: Journal Computers & Graphics 2013 DOI

Exact order-independent transparency (OIT) rendering is memory demanding because it requires per-pixel blending of an unknown number of fragments that need to be stored and sorted before compositing. In this paper, we describe the Dynamic Fragment Bu er (DFB) algorithm, which efficiently manages memory to perform correct compositing for pixels with varying numbers of fragments. We present a collection of experiments that illustrate the advantages of the DFB algorithm with respect to other OIT algorithms, and analyze the impact of the proposed variations.




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