Unreal 5无效，改变shadermodel会有影响 about toonshader

[Eragon-Brisingr]

Unfortunately, UE5 EA has some change let can not enable other data buffer without change soruce code. So the way only enable in under 4.26 engine.

[kriNon]

Have you looked at UE5.1?
I think it might be possible to add shader models using the new strata materials system.

[Eragon-Brisingr]

Have you looked at UE5.1? I think it might be possible to add shader models using the new strata materials system.

Not yet, can you hint me some idea?

[kriNon]

I think we can implement shading models in StrataEvaluation.ush
Maybe the strata module can be overridden?

Maybe we can insert code somehow? Shader File Preprocessing?

[Eragon-Brisingr]

ToonShader/Source/ToonShaderBootstrap/Private/ToonShaderBootstrap.cpp

Lines 17 to 37 in 453bba9

	const FString PluginShaderOverrideDir = FPaths::Combine(IPluginManager::Get().FindPlugin(TEXT("ToonShader"))->GetBaseDir(), TEXT("ShadersOverride"));
	const FString ShaderDir = FPaths::Combine(FPaths::EngineDir(), TEXT("Shaders"));
	bool bAlwaysReplaceShaderDirectory = PlatformFile.DirectoryExists(*FPaths::Combine(ShaderDir, TEXT("Private"), TEXT("Toon"))) == false;
	if (bAlwaysReplaceShaderDirectory == false)
	{
	FConfigFile* ConfigFile = GConfig->Find(*FPaths::Combine(FPaths::ProjectConfigDir(), TEXT("DefaultToonShaderSettings.ini")), false);
	if (ConfigFile)
	{
	ConfigFile->GetBool(TEXT("/Script/ToonShaderBootstrap.ToonShaderBootstrapSettings"), TEXT("bAlwaysReplaceShaderDirectory"), bAlwaysReplaceShaderDirectory);
	}
	}
	if (bAlwaysReplaceShaderDirectory)
	{
	const bool Succeed = PlatformFile.CopyDirectoryTree(*ShaderDir, *FPaths::Combine(PluginShaderOverrideDir, TEXT("Override")), true);
	if (IsRunningCommandlet() == false && Succeed == false)
	{
	FMessageDialog::Open(EAppMsgType::Ok, LOCTEXT("替换卡通材质失败警告", "向引擎目录[Engine/Shaders]下替换文件失败\n可能是文件访问权限问题"));
	}
	}

BootstrapModule replace engine shader file. (Shader File Preprocessing

But we can not enable other data buffer without change soruce code, because UE5 flexible GBuffer is enable.
First major checkin for flexible GBuffer.

[kriNon]

Why is flexible GBuffer an issue?

How do the other strata materials work with flexible GBuffer?

[Eragon-Brisingr]

When no flexible GBuffer, standard shader model has additional two GBuffer can use, but when flexible GBuffer enable, every shader model know max use GBuffer count, so additional GBuffer is gone.

[kriNon]

Can we do it the same way this works? Or we can't use GBuffer.customData?

[Eragon-Brisingr]

I think only change engine source code to enable additional data buffer...