Remove legacy shader pass and artifact fallbacks

engine/src/Core/Asset/AssetDatabase.cpp

@@ -2,7 +2,6 @@
 
 #include <XCEngine/Core/Asset/ArtifactFormats.h>
 #include <XCEngine/Debug/Logger.h>
-#include <XCEngine/Rendering/Builtin/BuiltinPassMetadataUtils.h>
 #include <XCEngine/Resources/Material/MaterialLoader.h>
 #include <XCEngine/Resources/Mesh/MeshLoader.h>
 #include <XCEngine/Resources/Shader/ShaderLoader.h>
@@ -11,6 +10,7 @@
 
 #include <algorithm>
 #include <cctype>
+#include <cstring>
 #include <filesystem>
 #include <fstream>
 #include <sstream>
@@ -108,6 +108,22 @@ void AddUniqueDependencyPath(const fs::path& path,
     }
 }
 
+bool IsCurrentShaderArtifactFile(const fs::path& artifactPath) {
+    std::ifstream input(artifactPath, std::ios::binary);
+    if (!input.is_open()) {
+        return false;
+    }
+
+    ShaderArtifactFileHeader header = {};
+    input.read(reinterpret_cast<char*>(&header), sizeof(header));
+    if (!input || input.gcount() != static_cast<std::streamsize>(sizeof(header))) {
+        return false;
+    }
+
+    return std::memcmp(header.magic, "XCSHD05", 7) == 0 &&
+           header.schemaVersion == kShaderArtifactSchemaVersion;
+}
+
 std::string TrimCopy(const std::string& text) {
     const auto begin = std::find_if_not(text.begin(), text.end(), [](unsigned char ch) {
         return std::isspace(ch) != 0;
@@ -425,19 +441,6 @@ Containers::String ResolveTextureBindingPath(
     return NormalizeArtifactPathString(material.GetTextureBindingPath(bindingIndex));
 }
 
-Containers::String ResolveSerializedLegacyMaterialShaderPassHint(const Material& material) {
-    const Containers::String& shaderPass = material.GetLegacyShaderPassHint();
-    if (shaderPass.Empty()) {
-        return Containers::String();
-    }
-
-    if (Rendering::IsRedundantLegacyMaterialShaderPassHint(material.GetShader(), shaderPass)) {
-        return Containers::String();
-    }
-
-    return shaderPass;
-}
-
 bool WriteMaterialArtifactFile(
     const fs::path& artifactPath,
     const Material& material,
@@ -459,7 +462,6 @@ bool WriteMaterialArtifactFile(
         material.GetShader() != nullptr
             ? material.GetShader()->GetPath()
             : Containers::String());
-    WriteString(output, ResolveSerializedLegacyMaterialShaderPassHint(material));
 
     MaterialArtifactHeader header;
     header.renderQueue = material.GetRenderQueue();
@@ -1454,6 +1456,11 @@ bool AssetDatabase::ShouldReimport(const SourceAssetRecord& sourceRecord,
         return true;
     }
 
+    if (artifactRecord->resourceType == ResourceType::Shader &&
+        !IsCurrentShaderArtifactFile(artifactMainPath)) {
+        return true;
+    }
+
     return artifactRecord->importerVersion != sourceRecord.importerVersion ||
            artifactRecord->sourceHash != sourceRecord.sourceHash ||
            artifactRecord->metaHash != sourceRecord.metaHash ||