发明名称 |
System and method for creating real-time shadows of complex transparent objects |
摘要 |
A system and method for creating real-time shadows of complex transparent objects includes a processor and a main memory that stores a transparent blocker object and a receiver object. A light source in a three-dimensional game environment determines an origin of a light coordinate system. A unit vector from the light source to the blocker object defines a z-axis of the light coordinate system and defines a light vector. The processor converts vertices of the blocker object from world coordinates into light coordinates. A graphics processor then calculates a shadow map by taking the dot-product of the light vector and each vertex of the blocker object. The shadow map is then stored in a memory of a graphics processor and is applied as a texture map to the receiver object by the graphics processor.
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申请公布号 |
US6646640(B2) |
申请公布日期 |
2003.11.11 |
申请号 |
US20010778183 |
申请日期 |
2001.02.06 |
申请人 |
SONY COMPUTER ENTERTAINMENT INC. |
发明人 |
NAGY GABOR |
分类号 |
A63F13/00;G06T15/00;G06T15/60;(IPC1-7):G06T15/60 |
主分类号 |
A63F13/00 |
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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