hi,

i am using Visual Studio Community Version 2019 with HLSL tools extension for shader editing.

Lets consider the following situation.

// definition of a global used structure
Source File A: structure_def.inc
struct Global_used_structure
{
float a;
float b;
}

// B is using it
Source File B: B_using_structure_A.fx
include "structure_def.inc"

Global_used_structure my_point ;

// C is using it
Source File C: C_using_structure_A.fx
include "structure_def.inc"

Global_used_structure my_other_point ;

// D is using it
Source File D: problem_file.fx
include "structure_def.inc"
include “B_using_structure_A.fx”
include “C_using_structure_A.fx”

Global_used_structure my_new_point ;

here i will get error of redefinition of structure because it is included several times.

OK i can change

// definition of a global used structure
Source File A: structure_def.inc
#ifndef Global_used_structure_H
#def Global_used_structure

struct Global_used_structure
{
float a;
float b;
}
#endif

But the problem is that i loose every code sensitive functions e.g. goto definitions and the HLSL tool will show me much errors in the code.

How to solve this.