Ray tracing processor, processor chip, equipment terminal and ray tracing method

Abstract

The invention discloses a ray tracing processor, a processor chip, an equipment terminal and a ray tracing method, and the ray tracing processor comprises a global task distribution unit which is used for receiving ray tracing tasks and distributing the ray tracing tasks according to the working states of a plurality of ray processing controllers; the ray tracing task comprises a ray intersection calculation task; each light processing controller comprises a local task distribution unit and a plurality of types of calculation units; the local task distribution unit is used for receiving the ray tracing task of the global task distribution unit and distributing the ray tracing task to an adaptive calculation unit for ray intersection calculation according to a ray intersection calculation task in the ray tracing task; the global cache unit is used for caching processing results of the light ray tracking tasks processed by the light ray processing controllers; and the task returning unit is used for acquiring a processing result corresponding to each ray tracing task and returning the processing result to the initiating end of the ray tracing task. The ray tracing processor improves the operation efficiency of the ray tracing task.

Description

technical field [0001] The present application relates to the technical field of computer graphics, and in particular to a ray tracing processor, a processor chip, a device terminal and a ray tracing method. Background technique [0002] Ray tracing is an algorithm that simulates the propagation of light in the real world to achieve realistic rendering. By tracing the light that interacts with objects, based on the material properties of each object in the scene, the path of reflection and scattering generated on the surface of the object is obtained. , to simulate a real virtual scene. Since every ray in the scene needs to be traced during the entire simulation process, the calculation scale of ray tracing is extremely large, and it is only widely used in the film industry and other fields. However, real-time ray tracing is due to Due to the limitation of hardware, it has been unable to develop. In recent years, with the continuous development of general-purpose computing o...

AI Technical Summary

Problems solved by technology

[0002] Ray tracing is an algorithm that simulates the propagation of light in the real world to achieve realistic rendering. By tracing the light that interacts with objects, based on the material properties of each object in the scene, the path of reflection and scattering generated on the surface of the object is obtained. , to simulate a real virtual scene. Since every ray in the scene needs to be traced during the entire simulation process, the calculation scale of ray tracing is extremely large, and it is only widely used in the film industry and other fields. However, real-time ray tracing is due to Due to the limitation of hardware, it has been unable to develop. In recent years, with the continuous development of general-purpose computing of graphics processors and GPUs, a variety of solutions to the above problems have been provided. For example, the entire ray tracing calculation process is implemented on the GPU, that is, From the generation of light to the traversal of the acceleration structure, to the final coloring are all performed on the GPU, but this will greatly increase the burden on the GPU, and when the core algorithm is very complex, the overhead caused by logic control may be very large, resulting in the overall Computing performance is greatly reduced

Some manufacturers have also equipped independent ray tracing processors for this purpose, such as NVIDIA's RT core. RT core is a dedicated hardware unit for accelerated processing of real-time ray tracing calculations. It will bring related problems, the biggest problem of which is that it cannot handle the divergence of light well. Due to the widespread problems of a large number of different materials in a scene, the final shader group ( Hit Group) shader ID (Shader ID) will have a lot of differences, the current hardware solutions on the market can not deal with this kind of problem well, resulting in dozens of times reduction in computing efficiency when divergence problems occur

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