A system configured to determine an extent to which an object in a computer-generated scene is visible from a virtual camera, including a rendering engine comprising a depth buffer and arranged to render the computer-generated scene, and a viewability testing module. The viewability testing module is configured to: generate a plurality of points distributed across a surface of the object; determine a depth map value for each point within a field of view of the virtual camera; determine whether each such point is visible from the perspective of the virtual camera based on a comparison between the determined depth map value for the point and a corresponding one or more depth map values stored in the depth buffer; and determining the extent to which the object is visible in dependence on which of the plurality of points are determined to be visible from the perspective of the virtual camera.

Motion sickness is reduced for users of mechanical systems used to practice sports that comprise an immersive virtual reality device. In particular, the use of prediction and interpolation algorithms enable fluid movements to be displayed within the virtual environment.

A behavior of a character arranged in a virtual space is produced. The behavior of the character is produced in a first part, based on data including motion data obtained by a capture of a motion of a performer who plays the character, and the behavior of the character is produced in a second part, based on data depending on an input from the performer, the input obtained in a mode different from the capture. The character viewed from a predetermined point of view in the virtual space is capable of being displayed on a predetermined display unit.

A character in a game world of a computer simulation is identified as moving toward a sky box in the simulation. The computer simulation does not permit simulation characters to enter the sky box. Techniques are described for remastering the skybox based on various parameters.

A character in a game world of a computer simulation is identified as moving toward a sky box in the simulation. The computer simulation does not permit simulation characters to enter the sky box. Techniques are described for remastering the skybox based on various parameters.

A method predefines a virtual staircase connecting real platforms in an XR space by: accessing a previously generated spatial mapping mesh (SMM); compiling a record from the SMM of available surfaces; identifying available platforms provided by the physical elements and available open spaces therebetween; selecting a first platform at a first level and a second platform at a significantly lower level; selecting a staircase start location at a first edge of the first platform, partly based on predetermined criteria; stacking virtual blocks linearly to form a virtual staircase, with a first virtual block contacting and extending outwards from the first platform, and a last virtual block contacting the second platform at a staircase end location; and performing a collision analysis. If the staircase end location satisfies the predetermined criteria, and if no collisions are detected, the current virtual staircase is displayed in subsequent user interactions with the XR space.

A method predefines a virtual staircase connecting real platforms in an XR space by: accessing a previously generated spatial mapping mesh (SMM); compiling a record from the SMM of available surfaces; identifying available platforms provided by the physical elements and available open spaces therebetween; selecting a first platform at a first level and a second platform at a significantly lower level; selecting a staircase start location at a first edge of the first platform, partly based on predetermined criteria; stacking virtual blocks linearly to form a virtual staircase, with a first virtual block contacting and extending outwards from the first platform, and a last virtual block contacting the second platform at a staircase end location; and performing a collision analysis. If the staircase end location satisfies the predetermined criteria, and if no collisions are detected, the current virtual staircase is displayed in subsequent user interactions with the XR space.

A method for displaying a virtual vehicle includes: calculating a virtual world comprising the virtual vehicle and a representation of a physical object at a virtual position; calculating a virtual position of a point of view within the virtual world based on a position of the point of view at the racecourse; and calculating a portion of the virtual vehicle within the virtual world that is visible from the virtual position of the point of view, wherein the portion of the virtual vehicle visible from the virtual position of the point of view comprises a portion of the virtual vehicle that is unobscured, from the virtual position of the point of view, by the representation of the physical object at the virtual position of the physical object.

A method for displaying a virtual vehicle includes: calculating a virtual world comprising the virtual vehicle and a representation of a physical object at a virtual position; calculating a virtual position of a point of view within the virtual world based on a position of the point of view at the racecourse; and calculating a portion of the virtual vehicle within the virtual world that is visible from the virtual position of the point of view, wherein the portion of the virtual vehicle visible from the virtual position of the point of view comprises a portion of the virtual vehicle that is unobscured, from the virtual position of the point of view, by the representation of the physical object at the virtual position of the physical object.

A method predefines activity zones in an extended reality (XR) space by: accessing a previously generated spatial mapping mesh (SMM); compiling a record of all exposed surfaces of the physical elements in the XR space, with positions, dimensions, and categories; for each recorded surface, performing a collision analysis at representative positions around its perimeter to determine an available adjacent open space; filter determined open spaces according to one or more predetermined criteria to determine one or more activity zones at corresponding locations; and assigning each activity zone to an activity category based in part on the categorization of the available adjacent surface or surfaces. The method is carried out in advance of user interaction with any virtual element in the XR space.