Abstract: An image rendering method includes receiving, by a central processing unit (CPU), a plurality of first primitives, dividing, by the CPU, each of the plurality of first primitives into each of a plurality of grids, collecting, by the CPU, the plurality of grids as a grid set, transmitting the grid set from the CPU to a graphic processing unit (GPU) when a size of the grid set is greater than a threshold value, and shading, by the GPU, the grid set.