Patent ID: 8553044

Claim:
A graphic rendering system, comprising: a storage unit, being configured to store a piece of first information, wherein the piece of first information defines a first virtual area in a display frame; and a processing unit, being configured to determine that a pixel in the display frame overlaps a part of the first virtual area according to the piece of first information, wherein the part corresponds to a first color, the pixel defines a first boundary, a second boundary, a third boundary, and a fourth boundary, the processing unit is further configured to decide a first coverage rate of the first virtual area on the first boundary, a second coverage rate of the first virtual area on the second boundary, a third coverage rate of the first virtual area on the third boundary, and a fourth coverage rate of the first virtual area on the fourth boundary, and the processing unit is further configured to decide a display color of the pixel with reference to the first color, the first coverage rate, the second coverage rate, the third coverage rate, and the fourth coverage rate.