Android Build not completing when including shaderRetention in build

Shader error in 'GLTF/PbrMetallicRoughness': '' : 'UNITY_STANDARD_SIMPLE' already defined at /Program Files/Unity/Editor/Data/CGIncludes/UnityStandardCoreForward.cginc(6) (on gles)

I am using latest version of unitygltf and also I have tested all possible solution in issues regarding to this problem in unity

[pennomi]

OK I just barely figured out how to fix this issue the right way. (It looks like it’s a bug in some core Unity includes.)

First, create a new file called UnityGltfStandardCoreForward.cginc and paste in the following code:

#ifndef UNITY_STANDARD_CORE_FORWARD_INCLUDED
#define UNITY_STANDARD_CORE_FORWARD_INCLUDED

#include "UnityStandardConfig.cginc"

#if UNITY_STANDARD_SIMPLE
    #include "UnityStandardCoreForwardSimple.cginc"
    VertexOutputBaseSimple vertBase (VertexInput v) { return vertForwardBaseSimple(v); }
    VertexOutputForwardAddSimple vertAdd (VertexInput v) { return vertForwardAddSimple(v); }
    half4 fragBase (VertexOutputBaseSimple i) : SV_Target { return fragForwardBaseSimpleInternal(i); }
    half4 fragAdd (VertexOutputForwardAddSimple i) : SV_Target { return fragForwardAddSimpleInternal(i); }
#else
    #include "UnityStandardCore.cginc"
    VertexOutputForwardBase vertBase (VertexInput v) { return vertForwardBase(v); }
    VertexOutputForwardAdd vertAdd (VertexInput v) { return vertForwardAdd(v); }
    half4 fragBase (VertexOutputForwardBase i) : SV_Target { return fragForwardBaseInternal(i); }
    half4 fragAdd (VertexOutputForwardAdd i) : SV_Target { return fragForwardAddInternal(i); }
#endif

#endif // UNITY_STANDARD_CORE_FORWARD_INCLUDED

Then, in the PbrSpecularGlossiness.shader and PbrMetallicRoughness.shader files, replace all

#include "UnityStandardCoreForward.cginc"

with

#include "UnityGltfStandardCoreForward.cginc"

Let me know if this works for you guys.

[spydeveloper]

Hello Guys,

Hope so you are fine and keeping well. Attached is the log of unity android build and these two shaders are taking most of the size in the app.

“58.9 mb 8.3% Assets/UnityGLTF/Shaders/PbrSpecularGlossiness.shader 55.7 mb 7.9% Assets/UnityGLTF/Shaders/PbrMetallicRoughness.shader”

When I don’t add them in the android build the build doesn’t work so I have added them and now it has increased the size. Can please anyone help me @stevenvergenz