modify default pbr shaders:

Unity Engine
1

hi all!
I need to have at least 6 texture uv in my shader, i’m trying to modify the default shaders: In UnityStandardInput.cginc I’ve modified VertexInput like this:

struct VertexInput
{
    float4 vertex    : POSITION;
    fixed4 vColor    : COLOR;
    half3 normal    : NORMAL;
    float2 uv0        : TEXCOORD0;
    float2 uv1        : TEXCOORD1;
    float2 uv2        : TEXCOORD2;
    float2 uv3        : TEXCOORD3;
    float2 uv4        : TEXCOORD4;
    //float2 uv5        : TEXCOORD5;
#ifdef _TANGENT_TO_WORLD
    half4 tangent    : TANGENT;
#endif
};

but when the shader compile, gives me this error:

any ideas?
my shader may accept uv from 0 to 5, but maybe that in the mesh there’s only 2 uv per vertex…

thanks in advance!

p.s. at the moment the UnityStandardCore.cginc is not modified…

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