[Issue]: Failed to load essential shader

[Polterdev]

Description

Trying to load BSL shaders on 1.7.10 with macOS intel gpu and resulted in an internal error with swansong

fml_client_latest.log, and crash reports, if any.

[17:46:55] [Client thread/ERROR] [SwanSong|ShaderEngine/]: Caught internal error while loading shaderpack!
[17:46:55] [Client thread/ERROR] [SwanSong|ShaderEngine/]: Please report this as a bug:
java.lang.NullPointerException: Failed to load essential shader: swansong:blit_identical/blit_color
at com.ventooth.swansong.shader.shaderobjects.BlitShader.load(BlitShader.java:36) ~[BlitShader.class:?]
at com.ventooth.swansong.shader.ShaderBinding.init(ShaderBinding.java:124) ~[ShaderBinding.class:?]
at com.ventooth.swansong.shader.FixedEngineState.init(FixedEngineState.java:153) ~[FixedEngineState.class:?]
at com.ventooth.swansong.shader.ShaderEngine.init(ShaderEngine.java:497) ~[ShaderEngine.class:?]
at com.ventooth.swansong.shader.ShaderEngine.doShaderPackReload(ShaderEngine.java:461) [ShaderEngine.class:?]
at com.ventooth.swansong.shader.ShaderEngine.beginRenderAllPre(ShaderEngine.java:213) [ShaderEngine.class:?]
at net.minecraft.client.Minecraft.wrapOperation$zcn000$swansong$hook_BeginFrame(Minecraft.java:3461) [bao.class:?]
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:999) [bao.class:?]
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898) [bao.class:?]
at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_74]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_74]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_74]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_74]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:115) [NewLaunch.jar:?]
at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) [NewLaunch.jar:?]
at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) [NewLaunch.jar:?]

I have submitted the required files

• I confirm that i have attached the required log files as a github attachment, and not as a pastebin/mclogs link.