WIP Technique loading

src/ObjLoading/Game/IW4/AssetLoaders/AssetLoaderTechniqueSet.cpp

@@ -1,6 +1,8 @@
 #include "AssetLoaderTechniqueSet.h"
 
 #include <cstring>
+#include <memory>
+#include <unordered_map>
 #include <sstream>
 #include <type_traits>
 
@@ -9,29 +11,185 @@
 #include "Game/IW4/IW4.h"
 #include "Game/IW4/TechsetConstantsIW4.h"
 #include "Pool/GlobalAssetPool.h"
+#include "Techset/TechniqueFileReader.h"
 #include "Techset/TechsetFileReader.h"
 
 using namespace IW4;
 
 namespace IW4
 {
-    class TechniqueZoneLoadingState final : public IZoneAssetLoaderState
+    class TechniqueCreator final : public techset::ITechniqueDefinitionAcceptor
     {
-        std::map<std::string, MaterialTechnique*> m_loaded_techniques;
+        IAssetLoadingManager* const m_manager;
 
     public:
-        _NODISCARD MaterialTechnique* FindLoadedTechnique(const std::string& techniqueName) const
+        struct Pass
+        {
+            XAssetInfo<MaterialVertexShader>* m_vertex_shader;
+            XAssetInfo<MaterialPixelShader>* m_pixel_shader;
+            MaterialVertexDeclaration m_vertex_decl;
+            std::vector<MaterialShaderArgument> m_arguments;
+
+            Pass()
+                : m_vertex_shader(nullptr),
+                  m_pixel_shader(nullptr),
+                  m_vertex_decl{}
+            {
+            }
+        };
+
+        std::vector<Pass> m_passes;
+        std::vector<XAssetInfoGeneric*> m_dependencies;
+
+        explicit TechniqueCreator(IAssetLoadingManager* manager)
+            : m_manager(manager)
+        {
+        }
+
+        void AcceptNextPass() override
+        {
+            m_passes.emplace_back();
+        }
+
+        void AcceptStateMap(const std::string& stateMapName) override
+        {
+            // TODO: State maps currently are not used
+        }
+
+        bool AcceptVertexShader(size_t shaderVersionMajor, size_t shaderVersionMinor, const std::string& vertexShaderName, std::string& errorMessage) override
+        {
+            auto* vertexShaderDependency = m_manager->LoadDependency(ASSET_TYPE_VERTEXSHADER, vertexShaderName);
+            if (vertexShaderDependency == nullptr)
+            {
+                errorMessage = "Failed to load specified shader";
+                return false;
+            }
+
+            auto& pass = m_passes.at(m_passes.size() - 1);
+            pass.m_vertex_shader = reinterpret_cast<XAssetInfo<MaterialVertexShader>*>(vertexShaderDependency);
+
+            return true;
+        }
+
+        bool AcceptPixelShader(size_t shaderVersionMajor, size_t shaderVersionMinor, const std::string& pixelShaderName, std::string& errorMessage) override
+        {
+            auto* pixelShaderDependency = m_manager->LoadDependency(ASSET_TYPE_PIXELSHADER, pixelShaderName);
+            if (pixelShaderDependency == nullptr)
+            {
+                errorMessage = "Failed to load specified shader";
+                return false;
+            }
+
+            auto& pass = m_passes.at(m_passes.size() - 1);
+            pass.m_pixel_shader = reinterpret_cast<XAssetInfo<MaterialPixelShader>*>(pixelShaderDependency);
+
+            return true;
+        }
+
+        bool AcceptShaderCodeArgument(techset::ShaderSelector shader, techset::ShaderArgument shaderArgument, techset::ShaderArgumentCodeSource source, std::string& errorMessage) override
+        {
+            return false;
+        }
+
+        bool AcceptShaderLiteralArgument(techset::ShaderSelector shader, techset::ShaderArgument shaderArgument, techset::ShaderArgumentLiteralSource source, std::string& errorMessage) override
+        {
+            return false;
+        }
+
+        bool AcceptShaderMaterialArgument(techset::ShaderSelector shader, techset::ShaderArgument shaderArgument, techset::ShaderArgumentMaterialSource source, std::string& errorMessage) override
+        {
+            return false;
+        }
+
+        bool AcceptVertexStreamRouting(const std::string& destination, const std::string& source, std::string& errorMessage) override
+        {
+            return false;
+        }
+    };
+
+    class LoadedTechnique
+    {
+    public:
+        MaterialTechnique* m_technique;
+        std::vector<XAssetInfoGeneric*> m_dependencies;
+
+        LoadedTechnique(MaterialTechnique* technique, std::vector<XAssetInfoGeneric*> dependencies)
+            : m_technique(technique),
+              m_dependencies(std::move(dependencies))
+        {
+        }
+    };
+
+    class TechniqueZoneLoadingState final : public IZoneAssetLoaderState
+    {
+        std::unordered_map<std::string, std::unique_ptr<LoadedTechnique>> m_loaded_techniques;
+
+    public:
+        _NODISCARD const LoadedTechnique* FindLoadedTechnique(const std::string& techniqueName) const
         {
             const auto loadedTechnique = m_loaded_techniques.find(techniqueName);
             if (loadedTechnique != m_loaded_techniques.end())
-                return loadedTechnique->second;
+                return loadedTechnique->second.get();
 
             return nullptr;
         }
 
-        void AddLoadedTechnique(std::string techniqueName, MaterialTechnique* technique)
+        const LoadedTechnique* AddLoadedTechnique(std::string techniqueName, MaterialTechnique* technique, std::vector<XAssetInfoGeneric*> dependencies)
         {
-            m_loaded_techniques.emplace(std::make_pair(std::move(techniqueName), technique));
+            return m_loaded_techniques.emplace(std::make_pair(std::move(techniqueName), std::make_unique<LoadedTechnique>(technique, std::move(dependencies)))).first->second.get();
+        }
+    };
+
+    class TechniqueLoader
+    {
+        ISearchPath* m_search_path;
+        MemoryManager* m_memory;
+        IAssetLoadingManager* m_manager;
+        TechniqueZoneLoadingState* m_zone_state;
+
+        static std::string GetTechniqueFileName(const std::string& techniqueName)
+        {
+            std::ostringstream ss;
+            ss << "techniques/" << techniqueName << ".tech";
+            return ss.str();
+        }
+
+        MaterialTechnique* LoadTechniqueFromRaw(const std::string& techniqueName, std::vector<XAssetInfoGeneric*>& dependencies)
+        {
+            const auto techniqueFileName = GetTechniqueFileName(techniqueName);
+            const auto file = m_search_path->Open(techniqueFileName);
+            if (!file.IsOpen())
+                return nullptr;
+
+            TechniqueCreator creator(m_manager);
+            techset::TechniqueFileReader reader(*file.m_stream, techniqueFileName, &creator);
+            if (!reader.ReadTechniqueDefinition())
+                return nullptr;
+            // TODO: Load technique or use previously loaded one
+            return nullptr;
+        }
+
+    public:
+        TechniqueLoader(ISearchPath* searchPath, MemoryManager* memory, IAssetLoadingManager* manager)
+            : m_search_path(searchPath),
+              m_memory(memory),
+              m_manager(manager),
+              m_zone_state(manager->GetAssetLoadingContext()->GetZoneAssetLoaderState<TechniqueZoneLoadingState>())
+        {
+        }
+
+        const LoadedTechnique* LoadMaterialTechnique(const std::string& techniqueName)
+        {
+            auto* technique = m_zone_state->FindLoadedTechnique(techniqueName);
+            if (technique)
+                return technique;
+
+            std::vector<XAssetInfoGeneric*> dependencies;
+            auto* techniqueFromRaw = LoadTechniqueFromRaw(techniqueName, dependencies);
+            if (technique == nullptr)
+                return nullptr;
+
+            return m_zone_state->AddLoadedTechnique(techniqueName, techniqueFromRaw, dependencies);
         }
     };
 }
@@ -44,13 +202,6 @@ void* AssetLoaderTechniqueSet::CreateEmptyAsset(const std::string& assetName, Me
     return techset;
 }
 
-std::string AssetLoaderTechniqueSet::GetTechniqueFileName(const std::string& techniqueName)
-{
-    std::ostringstream ss;
-    ss << "techniques/" << techniqueName << ".tech";
-    return ss.str();
-}
-
 std::string AssetLoaderTechniqueSet::GetTechsetFileName(const std::string& techsetAssetName)
 {
     std::ostringstream ss;
@@ -58,13 +209,6 @@ std::string AssetLoaderTechniqueSet::GetTechsetFileName(const std::string& techs
     return ss.str();
 }
 
-MaterialTechnique* AssetLoaderTechniqueSet::LoadTechniqueFromRaw(const std::string& techniqueName, ISearchPath* searchPath, MemoryManager* memory, IAssetLoadingManager* manager)
-{
-    const auto techniqueFileName = GetTechniqueFileName(techniqueName);
-    // TODO: Load technique or use previously loaded one
-    return nullptr;
-}
-
 bool AssetLoaderTechniqueSet::CreateTechsetFromDefinition(const std::string& assetName, const techset::TechsetDefinition& definition, ISearchPath* searchPath, MemoryManager* memory,
                                                           IAssetLoadingManager* manager)
 {
@@ -72,26 +216,26 @@ bool AssetLoaderTechniqueSet::CreateTechsetFromDefinition(const std::string& ass
     memset(techset, 0, sizeof(MaterialTechniqueSet));
     techset->name = memory->Dup(assetName.c_str());
 
-    auto* techniqueZoneLoadingState = manager->GetAssetLoadingContext()->GetZoneAssetLoaderState<TechniqueZoneLoadingState>();
+    TechniqueLoader techniqueLoader(searchPath, memory, manager);
+    std::set<XAssetInfoGeneric*> dependencies;
     for (auto i = 0u; i < std::extent_v<decltype(MaterialTechniqueSet::techniques)>; i++)
     {
         std::string techniqueName;
         if (definition.GetTechniqueByIndex(i, techniqueName))
         {
-            auto* technique = techniqueZoneLoadingState->FindLoadedTechnique(techniqueName);
+            auto* technique = techniqueLoader.LoadMaterialTechnique(techniqueName);
+
             if (!technique)
-            {
-                technique = LoadTechniqueFromRaw(techniqueName, searchPath, memory, manager);
-                if (technique == nullptr)
                 return false;
-                techniqueZoneLoadingState->AddLoadedTechnique(techniqueName, technique);
-            }
 
-            techset->techniques[i] = technique;
+            for (auto* techniqueDependency : technique->m_dependencies)
+                dependencies.emplace(techniqueDependency);
+
+            techset->techniques[i] = technique->m_technique;
         }
     }
 
-    manager->AddAsset(ASSET_TYPE_TECHNIQUE_SET, assetName, techset);
+    manager->AddAsset(ASSET_TYPE_TECHNIQUE_SET, assetName, techset, std::vector(dependencies.begin(), dependencies.end()), std::vector<scr_string_t>());
 
     return true;
 }

src/ObjLoading/Game/IW4/AssetLoaders/AssetLoaderTechniqueSet.h

@@ -9,9 +9,7 @@ namespace IW4
 {
     class AssetLoaderTechniqueSet final : public BasicAssetLoader<ASSET_TYPE_TECHNIQUE_SET, MaterialTechniqueSet>
     {
-        static std::string GetTechniqueFileName(const std::string& techniqueName);
         static std::string GetTechsetFileName(const std::string& techsetAssetName);
-        static MaterialTechnique* LoadTechniqueFromRaw(const std::string& techniqueName, ISearchPath* searchPath, MemoryManager* memory, IAssetLoadingManager* manager);
         static bool CreateTechsetFromDefinition(const std::string& assetName, const techset::TechsetDefinition& definition, ISearchPath* searchPath, MemoryManager* memory,
                                                 IAssetLoadingManager* manager);
 

src/ObjLoading/Techset/TechniqueDefinitionAcceptor.h

@@ -76,7 +76,7 @@ namespace techset
         virtual void AcceptStateMap(const std::string& stateMapName) = 0;
 
         virtual bool AcceptVertexShader(size_t shaderVersionMajor, size_t shaderVersionMinor, const std::string& vertexShaderName, std::string& errorMessage) = 0;
-        virtual bool AcceptPixelShader(size_t shaderVersionMajor, size_t shaderVersionMinor, const std::string& vertexShaderName, std::string& errorMessage) = 0;
+        virtual bool AcceptPixelShader(size_t shaderVersionMajor, size_t shaderVersionMinor, const std::string& pixelShaderName, std::string& errorMessage) = 0;
 
         virtual bool AcceptShaderCodeArgument(ShaderSelector shader, ShaderArgument shaderArgument, ShaderArgumentCodeSource source, std::string& errorMessage) = 0;
         virtual bool AcceptShaderLiteralArgument(ShaderSelector shader, ShaderArgument shaderArgument, ShaderArgumentLiteralSource source, std::string& errorMessage) = 0;