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  • Shader error in Universal Render Pipeline/Spine/Skeleton.Lit

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I use Unity 2019.4.13f1 and URP.

In Spine3.8-2020-10-28's CHANGELOG.md, i see "Now supporting Universal Render Pipeline (URP)..."

I install the spine-unity in the follow steps:

  1. clone the spine-runtimes git repository
  2. copy the spine-unity to an arbitrary directory
  3. copy the spine-csharp to the spine-unity's csharp folder
  4. install spine-unity by Unity Package Manager

Then I install the module com.esotericsoftware.spine.urp-shaders. After the package imported, the unity shows an error:

Shader error in 'Universal Render Pipeline/Spine/Skeleton Lit': failed to open source file: 'Assets/Spine/Runtime/spine-unity/Shaders/Sprite/CGIncludes/ShaderShared.cginc' at /UMP Packages/spine-unity/Modules/com.esotericsoftware.spine.urp-shaders/Shaders/Include/SpineCoreShaders/ShaderShared.cginc(2) (on d3d11)

Compiling Vertex program with UNITY_PASS_SHADOWCASTER
Platform defines: UNITY_ENABLE_REFLECTION_BUFFERS UNITY_USE_DITHER_MASK_FOR_ALPHABLENDED_SHADOWS UNITY_PBS_USE_BRDF1 UNITY_SPECCUBE_BOX_PROJECTION UNITY_SPECCUBE_BLENDING UNITY_ENABLE_DETAIL_NORMALMAP SHADER_API_DESKTOP UNITY_COLORSPACE_GAMMA UNITY_LIGHT_PROBE_PROXY_VOLUME UNITY_LIGHTMAP_FULL_HDR

I found the reason by opening the file "ShaderShared.cginc" , it said i need to adapt the path:

// Adapt this path accordingly if you have unpacked the Spine directory to another location.
#include "Assets/Spine/Runtime/spine-unity/Shaders/Sprite/CGIncludes/ShaderShared.cginc"

I dont have the file because i install spine-unity by git repository and Unity Package Manager.

If i install spine-unity by .unitypackage. I have the correct .cginc file.

So the solution is i have to install by .unitypackage.

But in the CHANGELOG.md file , it said i can install spine by UPM. Is it a problem?

[b]Installation:[/b] You can download the Unity Package Manager (UPM) package via the [download page](http://esotericsoftware.com/spine-unity-download) or find it in the [spine-runtimes/spine-unity/Modules](https://github.com/EsotericSoftware/spine-runtimes/tree/3.8-beta/spine-unity/Modules) subdirectory on the git repository. You can then either unzip (copy if using git) the package to
a) the `Packages` directory in your project where it will automatically be loaded, or
b) to an arbitrary directory outside the Assets directory and then open Package Manager in Unity, select the `+` icon, choose `Add package from disk..` and point it to the package.json file.
The Project panel should now show an entry `Spine Timeline Extensions` under `Packages`. If the directory is not yet listed, you will need to close and re-open Unity to have it display the directory and its contents.
xxl wrote

But in the CHANGELOG.md file, it said i can install spine by UPM. Is it a problem?

Please read the CHANGELOG.md entry that you posted: these changelog entries say that the spine-unity extension modules, such as Spine Timeline Extensions or Spine Universal RP Shaders can be installed via the Unity Package Manager. The spine-unity core shall officially be installed as unitypackage. Please also see spine-unity documentation pages here: the spine-unity Runtime Documentation: Getting Started

If you really want, you can install spine-unity via the UPM package.json file, but as you noticed, you have to adapt the file path mentioned above then:

xxl wrote
// Adapt this path accordingly if you have unpacked the Spine directory to another location.
#include "Assets/Spine/Runtime/spine-unity/Shaders/Sprite/CGIncludes/ShaderShared.cginc"

I dont have the file because i install spine-unity by git repository and Unity Package Manager.

This is not correct, the file is located exactly there in the git repository:
https://github.com/EsotericSoftware/spine-runtimes/blob/3.8/spine-unity/Assets/Spine/Runtime/spine-unity/Shaders/Sprite/CGIncludes/ShaderShared.cginc
If you want to use UPM, you have to adapt the path to point to the UPM location, it should then be:

#include "Packages/com.esotericsoftware.spine.spine-unity/Runtime/spine-unity/Shaders/Sprite/CGIncludes/ShaderShared.cginc"