Image rendering method and related device

Abstract

The invention discloses an image rendering method and a related device. The method comprises the steps of obtaining a low-resolution first shadow map and a high-resolution second shadow map of a target virtual object; determining a first texel range and a central point of each texel in the first shadow map; and performing scaling processing on the first texel range by using a scaling coefficient based on the central point to obtain a second texel range, and rendering the second texel range into a second shadow map to perform shadow rendering on the target virtual object. Therefore, the image rendering process based on the shadow map is realized, and the calculation amount of determining the map position through the low-resolution map is relatively small, so that the image rendering efficiency is improved; and then, the high-resolution shadow map is rendered, so that edge sawteeth are avoided, and the image rendering effect is improved.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to an image rendering method and related devices. Background technique [0002] In many applications for constructing 3D virtual environments, the shadow display of virtual objects is an important means to improve the display effect of 3D virtual environments. [0003] Generally, in game rendering, the shadow map technology is usually used to calculate the shadow of the object in real time. First, the shadow map rendering is performed on the scene from the perspective of the light source, and the distance information from the object to the light source is stored. For each pixel, calculate the position of the light source, and compare it with the distance stored in the shadow map to determine whether the object is in the shadow, and then calculate the shadow of the object according to the shadow situation. [0004] However, since the shadow map needs to be rendered based...

AI Technical Summary

Problems solved by technology

When the complexity of the scene is high, that is, when there are a large number of objects and light sources, if the shadow calculation of the entire scene is performed for the light sources one by one, it will cause a huge amount of calculation and affect the rendering efficiency of the shadow; if partial sampling is used for shadow calculation, then It is easy to produce edge aliasing, which affects the rendering effect of shadows

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