Description of the problem

Right now, the default precision for shader progams in three.js is highp. Issues like #14137 showed that this approach causes rendering problems especially on (older) mobile devices . Using mediump would solve these issues and also improve the performance of the shader execution on mobile, see #14137 (comment).

The problem is that certain materials like MeshStandardMaterial can not produce correct visual output with mediump right now, see #14137 (comment). Changing certain parts of the shader souce code is necessary to solve this issue.

Three.js version

• Dev
• r94
• ...

Browser

• All of them
• Chrome
• Firefox
• Internet Explorer

OS

• All of them
• Windows
• macOS
• Linux
• Android
• iOS

Hardware Requirements (graphics card, VR Device, ...)