Shader resource packs no longer work on render dragon. They work in 1.16.101 and before because those versions don't have render dragon. This only happens on Windows 10 and console since mobile devices don't have render dragon
How to reproduce:
Get any shader resource pack with HLSL code
Import it
Apply it to global resources or to the world
What I expected:
The shader will function like normal
What I saw:
The shader didn't work at all in the new graphics engine
Render Dragon currently does not support third-party shaders, see https://help.minecraft.net/hc/en-us/articles/4408865164173-Minecraft-with-Ray-Tracing-and-Advanced-Graphics-FAQ#h_01FF6ADKQJ6MHQ11KB2F5XWX4W.
If you would like to see support for third-party shaders, please add a vote to this thread:
https://feedback.minecraft.net/hc/en-us/community/posts/360077420452-3rd-party-shader-support-for-render-dragon