The invention relates to a ray tracing device for three-dimensional graphics, comprising a central processing unit constructing a first acceleration structure (AS) for a static object and performing a level of detail (LOD) operation on a first dynamic object, and a ray tracing core performing ray tracing on the basis of the first AS and a second AS for a second dynamic object. The central processing unit or the ray tracing core constructs said second AS for the second dynamic object.
