compile shader

Development Rendering
1

Hi

I am using UE to render photoreal images.
I have the problem that the reflections are super noisy.
After some research i found this post 3D Modeling & Texturing: [Unreal Engine 4] Improving Screen Space Reflections
Which it seems that this will solve the issue but i do not know how to compile the shader after i change the settings.
In another forum post someone mentioned that you have to recompile the whole engine, but i cannot believe that i have to compile everything just because of one shader.
Does someone know how i can recompile ScreenSpaceReflections.usf so it works in the engine ? i am using 4.16.2.

thanks

2

AFAIK the shaders are automatically recompiled when modified.
Have you tried modifying it and starting the editor, But don’t forget to keep a backup of the file(s).

HTH

3

hmmm then i do something wrong.
When i change the values of SSR_QUALITY == 4 to
NumSteps = 16
NumRays = 16

the editor crashes when i start it.
do i miss something, are there any other values i need to edit ?

4

I have not done any modifying of the engine, So I can only speculate what is happening.
Does it work when you set the value back to 16?
If so: I suggest slowly tweaking one of the values to see if/when it crashes.

Have you looked at the log file (<Project_Dir>\Saved\Logs)?

HTH