Rendering the global illumination of a 3d scene

A non-transitory computer readable storage medium having recorded thereon a graphic library computer program comprising instructions for performing a computer-implemented method for rendering the global illumination of a three-dimensional scene, the method comprising:

• providing a three-dimensional scene that comprises of a set of triangles and one or more direct light sources;
• determining that each triangle ti of the set has an area that is below a threshold So;
• assigning to each triangle of the set a radius of influence using a probability law;
• obtaining a subset of triangles * by filtering out the triangles according to their radius of influence;
• rendering the three-dimensional scene by lighting its set of triangles, the triangle of the subset of triangles * being used as indirect light sources according to their radius of influence.

A computer system for rendering the global illumination of a three-dimensional scene, comprising:

• processing circuitry communicatively coupled to a memory;
• a graphic card with a graphic processing unit;
• and
• a display,
• wherein the memory stores a program that when executed by the processing circuitry causes the processing circuitry to be configured to:
• provide a three-dimensional scene that comprises of a set of triangles and one or more direct light sources;
• determine that each triangle ti of the set has an area that is below a threshold So;
• assign to each triangle of the set a radius of influence using a probability law;
• obtain a subset of triangles * by filtering out the triangles according to their radius of influence;
• render the three-dimensional scene by lighting its set of triangles, the triangle of the subset of triangles * being used as indirect light sources according to their radius of influence.