A texture processing unit includes a controller configured to determine a first calculator that performs a calculation on a first mipmap and a second calculator that performs a calculation on a second mipmap, based on a level of detail (LOD) weight indicating influences of the first mipmap and the second mipmap on texture filtering, the influences being based on an LOD value of graphics; and a texture filter configured to perform the texture filtering by using the first calculator and the second calculator, wherein a calculation precision of the first calculator is different from a calculation precision of the second calculator.