A method for rendering plausible images of a three-dimensional, 3D, polygon mesh in an interactive computer simulation comprising an interactive computer generated environment, the method comprising: on the 3D polygon mesh defined using a plurality of vertices providing a plurality of rendering faces, determining an anchor point from at least three of the plurality of vertices, wherein the anchor point defines a connection between the 3D polygon mesh and a simulated ground of the interactive computer generated environment; computing a connectivity graph from the plurality of rendering faces as a representation of the 3D polygon mesh; for each one of the rendering faces of the 3D polygon mesh, determining based on the connectivity graph whether a connectivity path exists towards the anchor point and, when the connectivity path does not exist, removing the one rendering face from the 3D polygon mesh into an updated 3D polygon mesh by indicating a null or minimal surface value for the one rendering face and removing the one rendering face from the connectivity graph into an updated connectivity graph representing the updated 3D polygon mesh; and rendering, by an image generator of a processor module, the updated 3D polygon mesh for display comprising a subset of the plurality of rendering faces using a visual texture, the subset being determined from a field of view of the interactive computer simulation; wherein the method comprises, before determining whether the connectivity path exists towards the anchor point and following a virtual impact on the 3D polygon mesh affecting at least one impacted rendering face from the plurality of rendering faces, replacing the at least one impacted rendering face with a plurality of new rendering faces and updating the connectivity graph by appending the new rendering faces to the connectivity graph. on the 3D polygon mesh defined using a plurality of vertices providing a plurality of rendering faces, determining an anchor point from at least three of the plurality of vertices, wherein the anchor point defines a connection between the 3D polygon mesh and a simulated ground of the interactive computer generated environment; computing a connectivity graph from the plurality of rendering faces as a representation of the 3D polygon mesh; for each one of the rendering faces of the 3D polygon mesh, determining based on the connectivity graph whether a connectivity path exists towards the anchor point and, when the connectivity path does not exist, removing the one rendering face from the 3D polygon mesh into an updated 3D polygon mesh by indicating a null or minimal surface value for the one rendering face and removing the one rendering face from the connectivity graph into an updated connectivity graph representing the updated 3D polygon mesh; and rendering, by an image generator of a processor module, the updated 3D polygon mesh for display comprising a subset of the plurality of rendering faces using a visual texture, the subset being determined from a field of view of the interactive computer simulation; wherein the method comprises, before determining whether the connectivity path exists towards the anchor point and following a virtual impact on the 3D polygon mesh affecting at least one impacted rendering face from the plurality of rendering faces, replacing the at least one impacted rendering face with a plurality of new rendering faces and updating the connectivity graph by appending the new rendering faces to the connectivity graph.