Adaptive Scalable Texture Compression

Nystad, Jorn; Lassen, Anders; Pomianowski, Andy; Ellis, Sean; Olson, Tom

Adaptive Scalable Texture Compression

Files

105-114.pdf (555.86 KB)

astc-supplemental-material.pdf (57.28 KB)

Date

2012

Authors

Nystad, Jorn
Lassen, Anders
Pomianowski, Andy
Ellis, Sean
Olson, Tom

Publisher

The Eurographics Association

Abstract

We describe a fixed-rate, lossy texture compression system that is designed to offer an unusual degree of flexibility and to support a very wide range of use cases, while providing better image quality than most formats in common use today. The system supports both 2D and 3D textures, at both standard and high dynamic range, at bit rates ranging from eight bits per pixel down to less than one bit per pixel in very fine steps. At any bit rate, texels can have from one to four color components. The system's flexibility results from a number of novel features. Color spaces and weights are represented using an encoding scheme that allows flexible allocation of bits between different types of information. The system uses bilinear interpolation to derive color space coordinates for a texel from sparse samples, and uses a procedural partition function to map texels to color spaces.

        @inproceedings{:10.2312/EGGH/HPG12/105-114
https::/diglib.eg.org/handle/10.2312/EGGH.HPG12.105-114
https::/diglib.eg.org:443/handle/10.2312/EGGH.HPG12.105-114
,
booktitle = {Eurographics/ ACM SIGGRAPH Symposium on High Performance Graphics
},
editor = {Carsten Dachsbacher and Jacob Munkberg and Jacopo Pantaleoni
},
title = {{Adaptive Scalable Texture Compression
}},
author = {Nystad, Jorn and 
Lassen, Anders and 
Pomianowski, Andy and 
Ellis, Sean and 
Olson, Tom
},
year = {2012
},
publisher = {The Eurographics Association
},
ISSN = {2079-8679
},
ISBN = {978-3-905674-41-5
},
DOI = {/10.2312/EGGH/HPG12/105-114
https://diglib.eg.org/handle/10.2312/EGGH.HPG12.105-114
https://diglib.eg.org:443/handle/10.2312/EGGH.HPG12.105-114
}
}