Hardware accelerated rendering of CSG and transparency

  • Authors:
  • Michael Kelley;Kirk Gould;Brent Pease;Stephanie Winner;Alex Yen

  • Affiliations:
  • Apple Computer, Inc.;Apple Computer, Inc.;Apple Computer, Inc.;Apple Computer, Inc.;Apple Computer, Inc.

  • Venue:
  • SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
  • Year:
  • 1994

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Abstract

This paper describes algorithms for implementing accurate rendering of CSG and transparency in a hardware 3D accelerator. The algorithms are based on a hardware architecture which performs front-to-back Z-sorted shading; a multiple-pass algorithm which allows an unlimited number of Z-sorted object layers is also described. The multiple-pass algorithm has been combined with an image partitioning algorithm to improve efficiency, and to improve performance of the resulting hardware implementation.