发明名称 |
Asymmetric two-pass graphics scaling |
摘要 |
A method and an apparatus for determining an up scale factor and a down scale factor according to a scale factor received from a graphics application program interface (API) to scale a graphics data in a graphics processing unit (GPU) are described. The up scale factor and the down scale factor may be precisely stored in the GPU based on a fixed number of bits. An actual scale factor which can be precisely stored in the GPU corresponding to the scale factor may differ from the scale factor with a difference. Graphics commands may be sent to the GPU to scale the graphics data according to the up scale factor and the down scale factor separately. A combined scale factor corresponding to a combination of the up scale factor and the down scale factor may differ from the scale factor less then the difference between the actual scale factor and the scale factor.
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申请公布号 |
US7898554(B2) |
申请公布日期 |
2011.03.01 |
申请号 |
US20070811195 |
申请日期 |
2007.06.07 |
申请人 |
APPLE INC. |
发明人 |
BRICHTER LOREN;KAN ALEXANDER KING-CHUNG;SWIFT MICHAEL JAMES ELLIOTT |
分类号 |
G09G5/00 |
主分类号 |
G09G5/00 |
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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