Storage medium, game system, and game processing method

A game system comprising:

• one or more processors;
• and
• one or more memories storing a program that when executed, causes the game system to perform operations including:
• updating, based on game processing, voxel data defined in a virtual space,
• wherein, for each of a plurality of voxels, at least a density indicating the degree of virtual occupation of a content in a space defined by the voxel, and a material ID indicating the type of the content, are set in the voxel data;
• generating or updating a first mesh related to the voxel data, by determining vertex coordinates of the first mesh based on at least the density included in the voxel data and determining material IDs of polygons of the first mesh based on at least the material ID included in the voxel data;
• based on material data including at least rendering setting information including at least texture information set for each type of materials associated with the respective material ID and for the materials, rendering the first mesh by rendering the polygons based on the rendering setting information of a material associated with the material ID of each polygon of the first mesh;
• and
• when a first event occurs based on the game processing, switching a material associated with a first material ID associated with a first material from the first material to a second material.

A game processing method performed on an information processing system, the game processing method comprising:

• updating, based on game processing, voxel data defined in a virtual space, wherein, for each of a plurality of voxels, at least a density indicating the degree of virtual occupation of a content in a space defined by the voxel, and a material ID indicating the type of the content, are set in the voxel data;
• generating or updating a first mesh related to the voxel data, by determining vertex coordinates of the first mesh based on at least the density included in the voxel data and determining material IDs of polygons of the first mesh based on at least the material ID included in the voxel data;
• based on material data including at least rendering setting information including at least texture information set for each type of materials associated with the respective material ID and for the materials, rendering the first mesh by rendering the polygons based on the rendering setting information of a material associated with the material ID of each polygon of the first mesh;
• and
• when a first event occurs based on the game processing, switching a material associated with a first material ID associated with a first material from the first material to a second material.