2011.02.25
Overview
A graphic rendering system and a projection method thereof are provided. The graphic rendering system comprises a processing unit and a storage unit. The storage unit stores a piece of information. The information defines a virtual area in a camera space, wherein the virtual area has three vertices. The processing unit calculates two intersection vertices between the virtual area and near clipping plane of a view volume of the camera space. The processing unit transforms the three vertices and the two intersection vertices to a screen space and derives three projection vertices and two projection intersection vertices. The processing unit decides a valid area, chooses a test vertex from the valid area, and decides whether the signs of the three projection edge functions defined by the three projection vertices should be changed. Then, the processing unit decides pixels to be rendered according to the valid area, projection edge functions, and a predefined window clipping region.Category
發明
Patented
100106380
發明第I459322號
Filing Date
2011.02.25Expired Date
2031.02.24Notification
2026.11.20