Abstract: A computing system and method for representing volumetric data for a scene. One embodiment of the computing system includes: (1) a memory configured to store a three-dimensional (3D) clipmap data structure having at least one clip level and at least one mip level, and (2) a processor configured to generate voxelized data for a scene and cause the voxelized data to be stored in the 3D clipmap data structure.

Abstract: A graphics processing subsystem and method for updating a voxel representation of a scene. One embodiment of the graphics processing subsystem includes: (1) a memory configured to store a voxel representation of a scene having first and second regions to be updated, and (2) a graphics processing unit (GPU) operable to: (2a) unify the first and second regions into a bounding region if a volume thereof does not exceed summed volumes of the first and second regions by more than a tolerance, and (2b) generate voxels for the bounding region and cause the voxels to be stored in the voxel representation.

Abstract: A graphics processing subsystem and method for computing a 3D clipmap. One embodiment of the subsystem includes: (1) a renderer operable to render a primitive surface representable by a 3D clipmap, (2) a geometry shader (GS) configured to select respective major-plane viewports for a plurality of clipmap levels, the major-plane viewports being sized to represent full spatial extents of the 3D clipmap relative to a render target (RT) for the plurality of clipmap levels, (3) a rasterizer configured to employ the respective major-plane viewports and the RT to rasterize a projection of the primitive surface onto a major plane corresponding to the respective major-plane viewports into pixels representing fragments of the primitive surface for each of the plurality of clipmap levels, and (4) a plurality of pixel shader (PS) instances configured to transform the fragments into respective voxels in the plurality of clipmap levels, thereby voxelizing the primitive surface.

Abstract: A computing system and method for representing volumetric data for a scene. One embodiment of the computing system includes: (1) a memory configured to store a three-dimensional (3D) clipmap data structure having at least one clip level and at least one mip level, and (2) a processor configured to generate voxelized data for a scene and cause the voxelized data to be stored in the 3D clipmap data structure.

Abstract: A system for, and method of, computing reduced-resolution indirect illumination using interpolated directional incoming radiance and a graphics processing subsystem incorporating the system or the method. In one embodiment, the system includes: (1) a cone tracing shader executable in a graphics processing unit to compute directional incoming radiance cones for sparse pixels and project the directional incoming radiance cones on a basis and (2) an interpolation shader executable in the graphics processing unit to compute outgoing radiance values for untraced pixels based on directional incoming radiance values for neighboring ones of the sparse pixels.