3D model rendering method and device

Abstract

The invention relates to a 3D model rendering method and device. The method comprises the steps of obtaining a to-be-rendered 3D model and a corresponding normal map; generating a first shader with aFresnel reflection material; setting a normal map and a color enhancement map as the input parameters of the first shader; and performing texture processing by using the first shader with input parameters and the space coordinates of the to-be-rendered 3D model, and performing transparent rendering processing on the to-be-rendered 3D model through a rendering pipeline. According to the technical scheme, the Fresnel material is generated through the normal map, so that the surface of the 3D model has rich texture details, and the reflection phenomenon of different intensities can be generated according to the change of the position of the camera; the 3D model can generate different Fresnel effects by selecting different normal maps; and light and shadow flow is added to the surface of the 3D model through the color enhancement chartlet, and a large number of rich color changes instead of a pure light sweeping effect are achieved.

Description

Technical field [0001] The present application relates to image processing technology, and particularly relates to a method and apparatus for rendering 3D model. Background technique [0002] Transparency is an effect in the game often used in real-time rendering to achieve transparency effects usually control its transparent channel (Alpha Channel) when rendering model. Two ways transparency effects include: Transparency Test (Alpha Test) and alpha blending (Alpha Blending). [0003] Clarity Test manner transparent effect achieved extreme, when there is a transparency sheet element does not meet the condition, directly discard, not any treatment (no effect on the color buffer); If so, normal processing proceeds (depth testing, depth write, etc.); so this effect is caused by polarization, either completely transparent or completely opaque. And transparency can be obtained in a mixed manner translucency, transparency of the current fragment as a mixing factor value of the color is...

AI Technical Summary

Problems solved by technology

The way of transparency mixing can get translucent effect, use the transparency of the current fragment as the mixing factor, and mix it with the value in the color buffer to get a new color, but the way of transparency mixing, although the transparency can be adjusted through the AlphaScale parameter Adjustment, but the final result is only different

Images