发明名称 |
Cone-culled soft shadows |
摘要 |
Soft shadows in computer graphics images are created by rendering the scene from the camera viewpoint and at least one light viewpoint. The positions of scene fragments and light fragments in the scene are stored. For each scene fragment, a frustum is defined between the position of the scene fragment and the light source. Light fragments are evaluated with respect to the frustum to select light fragments blocking light between the light source and the scene fragment. A color or monochromatic shading value is determined for each scene fragment that indicates the amount of light blocked or transmitted by the light fragments. The shading values are then used to alter scene fragments accordingly. Computer graphics images with soft shadows can be created entirely by a graphics processing subsystem or by a graphics processing subsystem in conjunction with a central processing unit using a pipelined, deferred shading approach. |
申请公布号 |
US8223149(B2) |
申请公布日期 |
2012.07.17 |
申请号 |
US20100793357 |
申请日期 |
2010.06.03 |
申请人 |
BAVOIL LOUIS FREDERIC;HEIRICH ALAN BRYANT;SONY COMPUTER ENTERTAINMENT INC. |
发明人 |
BAVOIL LOUIS FREDERIC;HEIRICH ALAN BRYANT |
分类号 |
G06T15/60;G06T15/00;G06T15/50 |
主分类号 |
G06T15/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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