phyronnaz / hlslmaterial Goto Github PK

The function GetSceneTextureUV() ,is not defined in hlsl file.

Ideally this plugin would be able to differentiate between content that needs to definitely be part of a Custom node and everything else in order to take advantage of constant folding.

Function code:

void testFunc(float3 color, float intensity, out float3 diffuse, out float x) {

	float val = 0.1;
	int i = 0;
	while ( i <= 10 ) {
		diffuse.x = (val * (float)i);
		i += 1;
	}

	x = intensity * 0.5;
}

• Generated graph:
  

• Expected format: Intensity parameter and X output are not used within the while loop, and therefore could be broken out from the custom node:
  

IN UE4, its rught

IN UE5 , ERROR

I met these matters:

• when using include, UE5 only supports .usf or .ush
• simply using #include "basic.usf" does not work, how to write the correct path so UE can find it?

One of the main limitations of the custom node is that it doesn't allow for multiple functions to be defined/used in a single node.
A workaround exists where functions can be defined within a struct.

It would be awesome if the plugin could perform this process automatically, such that functions get automatically wrapped into a struct and calls to functions are swapped for calls to the function within the struct. Or alternatively, there may be a better workaround.

When parsing includes in hlsl file all of them are added even if they are guarded by failed #ifdef

#include "header_a.ush"

#ifndef SOMEDEF
#include "header_b.ush"
#endif

Right now both header_a and header_b are included and this leads to compilation errors.