Title:
GRAPHICS PROCESSING SYSTEMS
Document Type and Number:
WIPO Patent Application WO/2016/012756
Kind Code:
A3
Abstract:
In a graphics processing system, a bounding volume (20) representing the volume of a scene to be rendered and a cube texture (30) representing the transparency of the surface of the bounding volume are defined. Then, when the scene is to be rendered for output, a vector (28) from a sampling point (25) being considered to a light source (22) external of the bounding volume is determined and then used to determine how to sample the texture that represents the transparency of the surface of the bounding volume to determine the transparency of the surface of the bounding volume between the sampling point and the light source. The so- determined transparency is then used to simulate the effect of shadows cast by the external light source (22) at the sampling point (25).
Inventors:
BALA SYLWESTER (GB)
LOPEZ MENDEZ ROBERTO (GB)
LOPEZ MENDEZ ROBERTO (GB)
Application Number:
PCT/GB2015/052054
Publication Date:
March 17, 2016
Filing Date:
July 16, 2015
Export Citation:
Assignee:
ADVANCED RISC MACH LTD (GB)
International Classes:
G06T15/04; G06T15/60
Foreign References:
| US20070257911A1 | 2007-11-08 | |||
| US6876362B1 | 2005-04-05 |
Other References:
LOHMUELLER A. FRIEDRICH: "Textures with POV-Ray - Transparency mapping I", 20 January 2013 (2013-01-20), XP055235051, Retrieved from the Internet [retrieved on 20151209]
FRIEDRICH A. LOHMUELLER: "Textures with POV-Ray - Transparency mapping II", 20 January 2013 (2013-01-20), XP055235064, Retrieved from the Internet [retrieved on 20151209]
SEBASTIEN LAGARDE ET AL: "Local Image-based Lighting with Parallax-corrected Cubemap", GAMESCONNECTION, 30 November 2012 (2012-11-30), XP055235164, Retrieved from the Internet [retrieved on 20151209]
LAGARDE SÉBASTIEN ET AL: "Local image-based lighting with parallax-corrected cubemaps", SIGGRAPH '12 ACM SIGGRAPH 2012 TALKS, ACM, 2 PENN PLAZA, SUITE 701 NEW YORK NY 10121-0701 USA, 5 August 2012 (2012-08-05), pages 1, XP058008298, ISBN: 978-1-4503-1683-5, DOI: 10.1145/2343045.2343094
FRIEDRICH A. LOHMUELLER: "Textures with POV-Ray - Transparency mapping II", 20 January 2013 (2013-01-20), XP055235064, Retrieved from the Internet
SEBASTIEN LAGARDE ET AL: "Local Image-based Lighting with Parallax-corrected Cubemap", GAMESCONNECTION, 30 November 2012 (2012-11-30), XP055235164, Retrieved from the Internet
LAGARDE SÉBASTIEN ET AL: "Local image-based lighting with parallax-corrected cubemaps", SIGGRAPH '12 ACM SIGGRAPH 2012 TALKS, ACM, 2 PENN PLAZA, SUITE 701 NEW YORK NY 10121-0701 USA, 5 August 2012 (2012-08-05), pages 1, XP058008298, ISBN: 978-1-4503-1683-5, DOI: 10.1145/2343045.2343094
Attorney, Agent or Firm:
DEHNS (10 Salisbury Square, London Greater London EC4Y 8JD, GB)
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