Abstract: A processor shares path tracing data across sampling locations to amortize computations across space and time. The processor maps a group of sampling locations of a frame that are adjacent to each other in world-space to a cell of a hash table. Each cell of the hash table stores a list of reservoirs that are each associated with a ray that intersects the group of sampling locations from world-space. The processor resamples the reservoirs at the hash table by combining and re-using reservoirs across neighboring sampling locations and corresponding sampling locations of the previous frame to select a set of samples mapped to the cell. The processor then performs resampling of the selected set of samples to obtain a representative light sample to determine a value for the cell and renders the frame based on the value of the cell.

Abstract: A processor shares path tracing data across sampling locations to amortize computations across space and time. The processor maps a group of sampling locations of a frame that are adjacent to each other in world-space to a cell of a hash table. Each cell of the hash table stores a list of reservoirs that are each associated with a ray that intersects the group of sampling locations from world-space. The processor resamples the reservoirs at the hash table by combining and re-using reservoirs across neighboring sampling locations and corresponding sampling locations of the previous frame to select a set of samples mapped to the cell. The processor then performs resampling of the selected set of samples to obtain a representative light sample to determine a value for the cell and renders the frame based on the value of the cell.

Abstract: A method of image rendering includes representing a height map of terrain elevation data as a virtual texture; sampling a portion of the height map terrain elevation data on a uniform grid corresponding to render nodes used for rendering a terrain mesh, where a correspondence of the grid to the render nodes results in the sampled terrain elevation data for a render node being entirely contained within one physical page of memory, and where the equivalent position of a heightmap virtual co-ordinate in a page of physical memory is obtained based upon an offset to a physical page co-ordinate, rather than by reference to an indirection texture; and rendering terrain mesh for a render node according to terrain elevation data obtained from a single physical page of memory corresponding to respective virtual co-ordinates.

Abstract: A method of image rendering includes representing a height map of terrain elevation data as a virtual texture; sampling a portion of the height map terrain elevation data on a uniform grid corresponding to render nodes used for rendering a terrain mesh, where a correspondence of the grid to the render nodes results in the sampled terrain elevation data for a render node being entirely contained within one physical page of memory, and where the equivalent position of a heightmap virtual co-ordinate in a page of physical memory is obtained based upon an offset to a physical page co-ordinate, rather than by reference to an indirection texture; and rendering terrain mesh for a render node according to terrain elevation data obtained from a single physical page of memory corresponding to respective virtual co-ordinates.