This invention discloses a real-time rendering method and
system for physically simulated volumetric clouds. The method includes the following steps: constructing a
dynamic noise mixing model, and constructing complex cloud
layers by mixing multiple noises based on the
dynamic noise mixing model; constructing a multi-scattering illumination model, and using the multi-scattering illumination model to perform single-scattering calculations and multi-scattering approximations on the complex cloud
layers to simulate illumination; based on the completed illumination
simulation, dividing the cloud
density field of the complex cloud
layers into several
voxel blocks, and performing adaptive light travel
processing to complete the real-time rendering of volumetric clouds. This invention, without sacrificing
image quality and rendering efficiency, integrates advanced
cloud modeling theory with efficient GPU acceleration technology, and uses a
mixed noise model to generate diverse cloud structures, accurately reproducing various typical cloud types such as high-altitude cirrus clouds, cumulus clouds, and stratus clouds.