Shadow rendering method, game file packaging method and corresponding devices

Abstract

The invention relates to a shadow rendering method, a game file packaging method and a corresponding device, and the shadow rendering method comprises the steps: determining a target time period corresponding to the time in a game, and obtaining video data corresponding to each target terrain block in a first visual field range of a camera in a game scene from a game file; extracting a video frame corresponding to the target time period from the video data to obtain a shadow height map of the target terrain block in the target time period; and sampling a sampling value corresponding to each to-be-rendered terrain point from the shadow height map of the target time period, and rendering the shadow of the to-be-rendered terrain point according to the sampling value. The characteristic that the shadow changes along with time is utilized, video compression coding is carried out on the shadow height map through the video compression coding technology, a high compression ratio can be obtained, and the data volume is greatly reduced.

Description

technical field [0001] The present disclosure relates to the technical field of games, and in particular, to a shadow rendering method, a game file packaging method, and a corresponding device. Background technique [0002] Shadow is a very important visual element in the game screen, and the three-dimensional effect observed by human eyes largely depends on shadow. At present, the mainstream shadow algorithm is the shadow map (Shadow Map) algorithm. Its main process is to first render a depth map from the direction of the light source, and then compare the depth value of the screen pixel in the light source coordinate system with the The corresponding values ​​in the depth map get the occlusion relationship, thus rendering the shadow. In the process of porting the big world game to the mobile terminal, this will bring a lot of overhead. This results in a solution for pre-baking depth data for real-time rendering when the game is running. [0003] However, this kind of bi...

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Problems solved by technology

[0003] However, this kind of big world game often has a TOD (Alternation of Time) system, and the direction of light will change as time goes by, so it is necessary to bake data of different time periods, and in order to reduce the lagging feeling of time period switching, the granularity of time periods must be very small , which will lead to a hundredfold increase in baking data, coupled with the size of the big world itself, the amount of data is almost unacceptable

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