#if defined(SHADER_API_GLES3) || defined(SHADER_API_GLCORE) || defined(SHADER_API_METAL) || defined(SHADER_API_VULKAN) #if defined(UNITY_SUPPORT_STEREO_INSTANCING) & defined(STEREO_INSTANCING_ON) #define UNITY_PROCEDURAL_INSTANCING_ENABLED #if defined(UNITY_SUPPORT_INSTANCING) & defined(PROCEDURAL_INSTANCING_ON) #if defined(UNITY_SUPPORT_INSTANCING) & defined(INSTANCING_ON) - UNITY_STEREO_INSTANCING_ENABLED Defined if stereo instancing path is taken. - UNITY_PROCEDURAL_INSTANCING_ENABLED Defined if procedural instancing path is taken.

- UNITY_INSTANCING_ENABLED Defined if instancing path is taken. #if defined(SHADER_TARGET_SURFACE_ANALYSIS) & defined(UNITY_SUPPORT_INSTANCING) #define UNITY_INSTANCING_SUPPORT_FLEXIBLE_ARRAY_SIZE #if defined(SHADER_API_D3D11) || defined(SHADER_API_GLCORE) || defined(SHADER_API_GLES3) || defined(SHADER_API_METAL) || defined(SHADER_API_PSSL) || defined(SHADER_API_VULKAN) || defined(SHADER_API_SWITCH) These platforms support dynamically adjusting the instancing CB size according to the current batch. #if defined(SHADER_API_D3D11) || defined(SHADER_API_GLCORE) || defined(SHADER_API_GLES3) || defined(SHADER_API_VULKAN) in analysis pass we force array size to be 1 Treat instancing as not supported for surface shader analysis step - it does not affect what is being read/written by the shader anyway. #if SHADER_TARGET >= 35 & ( defined(SHADER_API_D3D11) || defined(SHADER_API_GLES3) || defined(SHADER_API_GLCORE) || defined(SHADER_API_XBOXONE) || defined(SHADER_API_PSSL) || defined(SHADER_API_VULKAN) || defined(SHADER_API_METAL)) #error 'Please include UnityShaderUtilities.cginc first.'

We will redefine some built-in shader functions e.g.UnityObjectToClipPos. #error 'Please include UnityShaderVariables.cginc first.'

We will redefine some built-in shader params e.g.

Unity setup