Virtual airport model ground surface texture projection rendering method

Abstract

The invention discloses a virtual airport model ground surface texture projection rendering method comprising the following steps that S1: a texture map is established; S2: the map is outputted to a newly built undivided surface patch model having the same area with projection area through a texture map channel; S3: the newly built undivided surface patch model and the texture map are stored in video memory; and S4: a visual engine loads the newly built surface patch model and the captured texture map and schedules video card resources for rendering. According to the method, model vertex information conventionally computed by a CPU is transferred to the texture map channel and computed by directly scheduling the GPU resources of the video card, and the information is also directly stored in the video memory to be directly scheduled by the GPU without reallocation in a system memory through a system bus so that utilization rate and processing speed of system resources can be greatly enhanced, computational resources of the CPU can also be released and the whole system is enabled to be more efficient.

Description

technical field [0001] The invention relates to a surface texture projection rendering method of a virtual airport model. Background technique [0002] In the development process of the virtual airport, it is required to display the various marking lines and indication signs on the airport ground in detail, and strive to ensure the restoration of the real situation in the simulated flight training to the greatest extent. Therefore, in the requirements and specifications for virtual airports, each marker and marking line has strict specification requirements. Among them, the ground marking line involves a wide range of taxiing routes and covers a large area of ​​the airport, which has attracted more attention. For example, in the picture rendered by the visual engine, the pilot must be able to clearly see the stop and wait line of the taxiway, and clearly observe the ground signs of the wheel position when entering the parking stand. [0003] It can be seen that the depictio...

AI Technical Summary

Problems solved by technology

Since the vertex information of the model surface is mostly processed by the CPU, the calculation of the texture information is completed by the GPU of the graphics card, and other functional parts of the entire system need to call a lot of computing resources of the CPU to perform data calculations, memory calls, etc. Data communication processing and other tasks lead to a severe squeeze on CPU performance and a large amount of idle GPU performance, which ultimately limits the operating efficiency of the entire simulation system.

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