Global illumination method and device and computer equipment

The invention discloses a global illumination method, a global illumination device and computer equipment, and relates to the technical field of image processing, illumination probes are placed in advance, so that the illumination probes are non-uniformly distributed in a scene, the illumination probes can be sampled at a high speed, the total quantity of the illumination probes can be controlled, and the overall illumination efficiency is improved. The data of each illumination probe is compressed, so that a better illumination effect can be achieved, and the consumption of a video memory is also controlled. The method comprises the following steps: acquiring target scene illumination probe sampling acceleration structure data; in response to the illumination rendering instruction, determining a target basic loading unit where the current position of a scene camera of the target scene is located in a plurality of basic loading units, and determining at least one illumination probe required by sampling in the