Memory-Efficient Order-Independent Transparency with Dynamic Fragment Buffer

Order-independent transparency (OIT) rendering is computationally intensive due to required sorting and sufficient memory to store fragments before sorting. We present Dynamic Fragment Buffer, a revamped two-pass OIT rendering technique, which performs correct blending of a large number of transpare...

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Bibliographic Details
Main Authors: Maule, M., Comba, J. L. D., Torchelsen, R., Bastos, R.
Format: Conference Proceeding
Language:English
Subjects:
Buffer storage
Geometry
Graphics processing units
Indexes
Memory management
Order-Independent Transparency
Rendering (computer graphics)
Sorting
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Description
Summary:Order-independent transparency (OIT) rendering is computationally intensive due to required sorting and sufficient memory to store fragments before sorting. We present Dynamic Fragment Buffer, a revamped two-pass OIT rendering technique, which performs correct blending of a large number of transparent layers at interactive frame rates. Our approach self-adjusts memory allocation to handle a variable number of fragments per pixel without wasting memory. In this paper we perform a detailed analysis of several design decisions which lead to this technique. We present a collection of experiments that illustrate the advantages of our technique with respect to others OIT algorithms in the literature.
ISSN:1530-1834
2377-5416
DOI:10.1109/SIBGRAPI.2012.27