【SRP Batcher】How to make a Default Unlit Shader compatible?

In order to use SRP Batcher, I'm trying to learn to make a shader compatible.Here is what I have done:
1. create a default Unlit shader (created by unity asset menu)
2.declare property in CBUFFER:

Code (CSharp):

1. CBUFFER_START(UnityPerMaterial)
2.     fixed4 _Color;
3. CBUFFER_END

3.In the inspector ,it still reminds me that the shader is not compatible because "Material property is found in another cbuffer than "UnityPerMaterial(_Color)" "
What Confused me is that this actually works in Windows(the shader became compatible after doing the same operations above), while in MacOS, the shader just can't make it. Then I tried to remove the property "_Color ", and I got another hint : "Builtin property found in another cbuffer than "UnityPerDraw"(unity_ObjectToWorld) ".This is wired because in the default shader ,"UnityCG.cginc" is included, and these builtin properties are already defined in a CBUFFER block in UnityShaderVariables.cginc.
Why it acts so different between Windows and MacOS, is it because of the graphics API or some other reasons? Why the Shader is still not compatible while the properties already are declared in CBUFFER block on MacOS

 

I've tried with 2019.3.11f1 and 2019.2.15f1，on Windows the graphic API is set to "DX11"，on MacOs the graphic API is set to "auto"

 

Thanks for your reply. The shader and the complied shader is attached below. The inspector reminds me that
unity_ObjectToWorld in another cbuffer than "UnityPerDraw"
It seems that unity_ObjectToWorld is already in constant Buffer "VGlobals"

 

Code (CSharp):

1. #if defined(SHADER_API_D3D11) || defined(UNITY_ENABLE_CBUFFER) || defined(SHADER_API_PSSL)
2. #define CBUFFER_START(name) cbuffer name {
3. #define CBUFFER_END };
4. #else
5. // On specific platforms, like OpenGL, GLES3 and Metal, constant buffers may still be used for instancing
6. #define CBUFFER_START(name)
7. #define CBUFFER_END
8. #end

Oh I get it, thanks.I find it in HLSLSupport.cginc that CBUFFER_START seems not defined as cbuffer when the shader api is Metal .So that's why that shader is compatible on Windows with D3D11 but not compatible on MacOS with Metal,and it probably will not compatible on mobile platform with GLES3. By the way, what does the marco "UNITY_ENABLE_CBUFFER" stand for? Seems that with this marco defined CBUFFER_START is also defined as "cbuffer" .Is it a switch I can turn on?

 

Thanks, that will be helpful

 

Thanks for your answer! I will check the shaders in the URP later