Abstract: There is provided a multichip ray tracing device. The multichip ray tracing device includes a plurality of memory units; an acceleration structure division processing unit that divides an acceleration structure (AS) into a plurality of divided acceleration structures and stores each of the plurality of divided acceleration structures in a corresponding memory unit among the plurality of memory units; and a plurality of ray tracing core units connected to the plurality of memory units. Each of the plurality of ray tracing core units performs an internal ray tracing (Internal RT) operation for a corresponding divided acceleration structure and transmits corresponding ray information to a corresponding ray tracing core unit to perform an external ray tracing (External RT) operation when attempting to access a data node that is not in the corresponding divided acceleration structure in the process of the internal ray tracing operation.

Abstract: Disclosed is a buffering method in a portable ray tracing system. The buffering method includes: receiving a dynamic acceleration structure from the portable ray tracing apparatus during the process for performing a graphics process; packaging a dynamic object updated by the user terminal with the dynamic acceleration structure and sequentially storing the packaged dynamic object into a buffer area formed in a system memory of the user terminal; when disconnection of the physical connection is detected, performing ray tracing using a graphics processor of the user terminal by loading packaging data from the buffer area and determining a recovery point.

Abstract: Disclosed is a graphics processing apparatus based on hybrid GPU architecture. The graphics processing apparatus includes: an acceleration structure generation unit generating an acceleration structure based on geometry data related to a 3D scene; a ray tracing unit performing ray tracing based on the acceleration structure; and a rasterization unit including a sharing interface for shader-sharing with the ray tracing unit and performing rasterization rendering by sharing shading information generated from a result of the ray tracing.

Abstract: Disclosed is a portable ray tracing apparatus. The apparatus includes: a physical connection unit providing a physical connection to a connection port of a user terminal; a graphic data area detecting unit detecting a graphic data area which is allocated to a system memory of the user terminal if the physical connection is provided and which employs an acceleration structure for graphics processes agreed upon in advance; and a graphic processor operating unit synchronizing the graphic data area with an internal memory and operating a graphic processor of the user terminal. Therefore, the present invention performs ray tracing by being physically connected to a computing device and thereby shares graphics processing.

Abstract: Disclosed is a graphics processing apparatus based on hybrid GPU architecture. The graphics processing apparatus includes: an acceleration structure generation unit generating an acceleration structure based on geometry data related to a 3D scene; a ray tracing unit performing ray tracing based on the acceleration structure; and a rasterization unit including a sharing interface for shader-sharing with the ray tracing unit and performing rasterization rendering by sharing shading information generated from a result of the ray tracing.

Abstract: Disclosed is a buffering method in a portable ray tracing system. The buffering method includes: receiving a dynamic acceleration structure from the portable ray tracing apparatus during the process for performing a graphics process; packaging a dynamic object updated by the user terminal with the dynamic acceleration structure and sequentially storing the packaged dynamic object into a buffer area formed in a system memory of the user terminal; when disconnection of the physical connection is detected, performing ray tracing using a graphics processor of the user terminal by loading packaging data from the buffer area and determining a recovery point.

Abstract: Disclosed is a portable ray tracing apparatus. The apparatus includes: a physical connection unit providing a physical connection to a connection port of a user terminal; a graphic data area detecting unit detecting a graphic data area which is allocated to a system memory of the user terminal if the physical connection is provided and which employs an acceleration structure for graphics processes agreed upon in advance; and a graphic processor operating unit synchronizing the graphic data area with an internal memory and operating a graphic processor of the user terminal. Therefore, the present invention performs ray tracing by being physically connected to a computing device and thereby shares graphics processing.

Abstract: Disclosed is a ray tracing device using MIMD based T&I scheduling, including: a ray receiving unit receiving a ray generated with respect to a specific frame according to a frame progress order and storing the received ray in a ray buffer; a ray scheduling unit allocating a ray provided by the ray buffer to one of a plurality of T&I pipelines, each of which including an input and output buffers; a traversal/intersection test performing unit performing a traversal/intersection test on an allocated ray in a parallel fashion by using each of the plurality of T&I pipelines and determining a triangle intersecting the allocated ray; and a test result ordering unit receiving information about the triangle from the plurality of T&I pipelines as a test result, storing the received test result in a test buffer, and re-arranging the received test result according to a frame progress order.

Abstract: A ray tracing core includes a ray generation unit and a plurality of T&I (Traversal & Intersection) units with MIMD (Multiple Instruction stream Multiple Data stream) architecture. The ray generation unit generates at least one eye ray based on an eye ray generation information. The eye ray generation information includes a screen coordinate value. Each of the plurality of T&I units receives the at least one eye ray and checks whether there exists a triangle intersected with the received at least one eye ray. The triangle configures a space.

Abstract: A ray tracing core includes a ray generation unit and a plurality of T&I (Traversal & Intersection) units with MIMD (Multiple Instruction stream Multiple Data stream) architecture. The ray generation unit generates at least one eye ray based on an eye ray generation information. The eye ray generation information includes a screen coordinate value. Each of the plurality of T&I units receives the at least one eye ray and checks whether there exists a triangle intersected with the received at least one eye ray. The triangle configures a space.

Abstract: A ray tracing core comprising a ray generation unit and a plurality of T&I (Traversal & Intersection) units with MIMD (Multiple Instruction stream Multiple Data stream) architecture is disclosed. The ray generation unit generates at least one eye ray based on an eye ray generation information. The eye ray generation information includes a screen coordinate value. Each of the plurality of T&I units receives the at least one eye ray and checks whether there exists a triangle intersected with the received at least one eye ray. The triangle configures a space.

Abstract: The ray tracing apparatus for three-dimensional (3D) graphics includes a Central Processing Unit (CPU) for constructing a first Acceleration Structure (AS) for a static object, and creating a second dynamic object by performing a Level Of Detail (LOD) operation on the first dynamic object and a ray tracing core for performing ray tracing based on the first AS and a second AS for the second dynamic object. The CPU or the ray tracing core constructs the second AS for the second dynamic object.

Abstract: A ray tracing core comprises a ray tracing unit (RTU), a control unit, and a tree build unit (TBU). The ray tracing unit performs ray tracing based on a spatial partitioning structure. The control unit calculates the degree of complexity of the spatial partitioning structure by monitoring the load state of the ray tracing unit. The tree build unit builds the spatial partitioning structure having the degree of complexity which is calculated. The load state is determined based on a frame rate which is processed in the pertinent unit. The spatial partitioning structure applies a K-dimensional tree. For example, the degree of complexity can be modified according to either the maximum primitive number of a leaf node with respect to a K-dimensional tree structure or a tree depth.

Abstract: A method for selecting a MIP-map level is used for Texture Mapping based on Global Illumination. The method for selecting the MIP-map level confirms Object information on at least one object on a screen. The object information can include the number, shape, and the composition of objects on the screen, and/or the spatial position of a relevant object on the screen. Based on the object information, a MIP-map level selection algorithm is determined. The MIP-map level selection algorithm includes ray tracing and/or distance measuring, wherein the ray tracing selects the MIP-map based on the Differential value of adjacent rays, and the distance measuring can select a MIP-map by calculating the distance at which the ratio of pixels and texels reach 1:1. Based on the determined method, the MIP-map level is selected.

Abstract: A ray tracing core comprises a ray tracing unit (RTU), a control unit, and a tree build unit (TBU). The ray tracing unit performs ray tracing based on a special partitioning structure. The control unit calculates the degree of complexity of the spatial partitioning structure by monitoring the load state of the ray tracing unit. The tree build unit builds the spatial partitioning structure having the degree of complexity which is calculated. The load state is determined based on a frame rate which is processed in the pertinent unit. The spatial partitioning structure applies a K-dimensional tree. For example, the degree of complexity can be modified according to either the maximum primitive number of a leaf node with respect to a K-dimensional tree structure or a tree depth.

Abstract: The ray tracing apparatus for three-dimensional (3D) graphics includes a Central Processing Unit (CPU) for constructing a first Acceleration Structure (AS) for a static object, and creating a second dynamic object by performing a Level Of Detail (LOD) operation on the first dynamic object and a ray tracing core for performing ray tracing based on the first AS and a second AS for the second dynamic object. The CPU or the ray tracing core constructs the second AS for the second dynamic object.

Abstract: A ray tracing core comprising a ray generation unit and a plurality of T&I (Traversal & Intersection) units with MIMD (Multiple Instruction stream Multiple Data stream) architecture is disclosed. The ray generation unit generates at least one eye ray based on an eye ray generation information. The eye ray generation information includes a screen coordinate value. Each of the plurality of T&I units receives the at least one eye ray and checks whether there exists a triangle intersected with the received at least one eye ray. The triangle configures a space.