公开(公告)号：US12014457B2

公开(公告)日：2024-06-18

申请号：US17969383

申请日：2022-10-19

Applicant: Imagination Technologies Limited

Inventor： Luke T. Peterson ,  Justin P. DeCell ,  Jens Fursund

IPC: G06T15/06 ,  G06T15/00 ,  G06T15/04 ,  G06T15/50

CPC classification number: G06T15/06 ,  G06T15/00 ,  G06T15/005 ,  G06T15/04 ,  G06T15/506 ,  G06T2215/12 ,  G06T2215/16

Abstract: A bounce light map for a scene is determined for use in rendering the scene in a graphics processing system. Initial lighting indications representing lighting within the scene are determined. For a texel position of the bounce light map, the initial lighting indications are sampled using an importance sampling technique to identify positions within the scene. Sampling rays are traced between a position in the scene corresponding to the texel position of the bounce light map and the respective identified positions with the scene. A lighting value is determined for the texel position of the bounce light map using results of the tracing of the sampling rays. By using the importance sampling method described herein, the rays which are traced are more likely to be directed towards more important regions of the scene which contribute more to the lighting of a texel.

公开(公告)号：US20230334760A1

公开(公告)日：2023-10-19

申请号：US18211517

申请日：2023-06-19

Applicant: Imagination Technologies Limited

Inventor： Justin P. DeCell ,  Luke T. Peterson

IPC: G06T15/06

CPC classification number: G06T15/06 ,  G06T17/005

Abstract: Graphics processing systems and methods provide soft shadowing effects into rendered images. This is achieved in a simple manner which can be implemented in real-time without incurring high processing costs so it is suitable for implementation in low-cost devices. Rays are cast from positions on visible surfaces corresponding to pixel positions towards the center of a light, and occlusions of the rays are determined. The results of these determinations are used to apply soft shadows to the rendered pixel values.

公开(公告)号：US11494970B2

公开(公告)日：2022-11-08

申请号：US17308979

申请日：2021-05-05

Applicant: Imagination Technologies Limited

Inventor： Luke T. Peterson ,  Justin P. DeCell ,  Jens Fursund

IPC: G06T15/06 ,  G06T15/00 ,  G06T15/04 ,  G06T15/50

Abstract: A bounce light map for a scene is determined for use in rendering the scene in a graphics processing system. Initial lighting indications representing lighting within the scene are determined. For a texel position of the bounce light map, the initial lighting indications are sampled using an importance sampling technique to identify positions within the scene. Sampling rays are traced between a position in the scene corresponding to the texel position of the bounce light map and the respective identified positions with the scene. A lighting value is determined for the texel position of the bounce light map using results of the tracing of the sampling rays. By using the importance sampling method described herein, the rays which are traced are more likely to be directed towards more important regions of the scene which contribute more to the lighting of a texel.

公开(公告)号：US20180315235A1

公开(公告)日：2018-11-01

申请号：US16030510

申请日：2018-07-09

Applicant: Imagination Technologies Limited

Inventor： Justin P. DeCell ,  Luke T. Peterson

IPC: G06T15/06

CPC classification number: G06T15/06 ,  G06T17/005

Abstract: Graphics processing systems and methods provide soft shadowing effects into rendered images. This is achieved in a simple manner which can be implemented in real-time without incurring high processing costs so it is suitable for implementation in low-cost devices. Rays are cast from positions on visible surfaces corresponding to pixel positions towards the center of a light, and occlusions of the rays are determined. The results of these determinations are used to apply soft shadows to the rendered pixel values.

公开(公告)号：US20250148696A1

公开(公告)日：2025-05-08

申请号：US19019232

申请日：2025-01-13

Applicant: Imagination Technologies Limited

Inventor： Justin P. DeCell ,  Luke T. Peterson

IPC: G06T15/06 ,  G06T17/00

Abstract: Graphics processing systems and methods provide soft shadowing effects into rendered images. This is achieved in a simple manner which can be implemented in real-time without incurring high processing costs so it is suitable for implementation in low-cost devices. Rays are cast from positions on visible surfaces corresponding to pixel positions towards the center of a light, and occlusions of the rays are determined. The results of these determinations are used to apply soft shadows to the rendered pixel values.

公开(公告)号：US20210279940A1

公开(公告)日：2021-09-09

申请号：US17308979

申请日：2021-05-05

Applicant: Imagination Technologies Limited

Inventor： Luke T. Peterson ,  Justin P. DeCell ,  Jens Fursund

IPC: G06T15/06 ,  G06T15/00 ,  G06T15/04 ,  G06T15/50

Abstract: A bounce light map for a scene is determined for use in rendering the scene in a graphics processing system. Initial lighting indications representing lighting within the scene are determined. For a texel position of the bounce light map, the initial lighting indications are sampled using an importance sampling technique to identify positions within the scene. Sampling rays are traced between a position in the scene corresponding to the texel position of the bounce light map and the respective identified positions with the scene. A lighting value is determined for the texel position of the bounce light map using results of the tracing of the sampling rays. By using the importance sampling method described herein, the rays which are traced are more likely to be directed towards more important regions of the scene which contribute more to the lighting of a texel.

公开(公告)号：US20190259196A1

公开(公告)日：2019-08-22

申请号：US16400594

申请日：2019-05-01

Applicant: Imagination Technologies Limited

Inventor： Luke T. Peterson ,  Justin P. DeCell ,  Jens Fursund

IPC: G06T15/06 ,  G06T15/04 ,  G06T15/00 ,  G06T15/50

Abstract: A bounce light map for a scene is determined for use in rendering the scene in a graphics processing system. Initial lighting indications representing lighting within the scene are determined. For a texel position of the bounce light map, the initial lighting indications are sampled using an importance sampling technique to identify positions within the scene. Sampling rays are traced between a position in the scene corresponding to the texel position of the bounce light map and the respective identified positions with the scene. A lighting value is determined for the texel position of the bounce light map using results of the tracing of the sampling rays. By using the importance sampling method described herein, the rays which are traced are more likely to be directed towards more important regions of the scene which contribute more to the lighting of a texel.

公开(公告)号：US20170263043A1

公开(公告)日：2017-09-14

申请号：US15456865

申请日：2017-03-13

Applicant: Imagination Technologies Limited

Inventor： Luke T. Peterson ,  Justin P. DeCell ,  Jens Fursund

IPC: G06T15/06 ,  G06T15/04 ,  G06T15/50 ,  G06T15/00

CPC classification number: G06T15/06 ,  G06T15/00 ,  G06T15/005 ,  G06T15/04 ,  G06T15/506 ,  G06T2215/12 ,  G06T2215/16

Abstract: A bounce light map for a scene is determined for use in rendering the scene in a graphics processing system. Initial lighting indications representing lighting within the scene are determined. For a texel position of the bounce light map, the initial lighting indications are sampled using an importance sampling technique to identify positions within the scene. Sampling rays are traced between a position in the scene corresponding to the texel position of the bounce light map and the respective identified positions with the scene. A lighting value is determined for the texel position of the bounce light map using results of the tracing of the sampling rays. By using the importance sampling method described herein, the rays which are traced are more likely to be directed towards more important regions of the scene which contribute more to the lighting of a texel.

公开(公告)号：US11682159B2

公开(公告)日：2023-06-20

申请号：US17341250

申请日：2021-06-07

Applicant: Imagination Technologies Limited

Inventor： Justin P. DeCell ,  Luke T. Peterson

IPC: G06T15/06 ,  G06T17/00

CPC classification number: G06T15/06 ,  G06T17/005

Abstract: Graphics processing systems and methods provide soft shadowing effects into rendered images. This is achieved in a simple manner which can be implemented in real-time without incurring high processing costs so it is suitable for implementation in low-cost devices. Rays are cast from positions on visible surfaces corresponding to pixel positions towards the center of a light, and occlusions of the rays are determined. The results of these determinations are used to apply soft shadows to the rendered pixel values.

公开(公告)号：US20210295590A1

公开(公告)日：2021-09-23

申请号：US17341250

申请日：2021-06-07

Applicant: Imagination Technologies Limited

Inventor： Justin P. DeCell ,  Luke T. Peterson

IPC: G06T15/06 ,  G06T15/60

Abstract: Graphics processing systems and methods provide soft shadowing effects into rendered images. This is achieved in a simple manner which can be implemented in real-time without incurring high processing costs so it is suitable for implementation in low-cost devices. Rays are cast from positions on visible surfaces corresponding to pixel positions towards the center of a light, and occlusions of the rays are determined. The results of these determinations are used to apply soft shadows to the rendered pixel values.