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apps/RenderCadenceCompositor/app/RuntimeLayerControllerBuild.cpp

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+#include "RuntimeLayerController.h"
+
+#include "AppConfigProvider.h"
+#include "../logging/Logger.h"
+
+#include <filesystem>
+
+namespace RenderCadenceCompositor
+{
+void RuntimeLayerController::LoadSupportedShaderCatalog(const std::string& shaderLibrary, unsigned maxTemporalHistoryFrames)
+{
+	const std::filesystem::path shaderRoot = FindRepoPath(shaderLibrary);
+	std::string error;
+	if (!mShaderCatalog.Load(shaderRoot, maxTemporalHistoryFrames, error))
+	{
+		LogWarning("runtime-shader", "Supported shader catalog is empty: " + error);
+		return;
+	}
+
+	Log("runtime-shader", "Supported shader catalog loaded with " + std::to_string(mShaderCatalog.Shaders().size()) + " shader(s).");
+}
+
+void RuntimeLayerController::InitializeLayerModel(std::string& runtimeShaderId)
+{
+	std::lock_guard<std::mutex> lock(mRuntimeLayerMutex);
+	std::string error;
+	if (!mRuntimeLayerModel.InitializeSingleLayer(mShaderCatalog, runtimeShaderId, error))
+	{
+		LogWarning("runtime-shader", error + " Runtime shader build disabled.");
+		runtimeShaderId.clear();
+		mRuntimeLayerModel.Clear();
+	}
+}
+
+void RuntimeLayerController::StartLayerShaderBuild(const std::string& layerId, const std::string& shaderId)
+{
+	CleanupRetiredShaderBuilds();
+	RetireLayerShaderBuild(layerId);
+
+	{
+		std::lock_guard<std::mutex> lock(mRuntimeLayerMutex);
+		std::string error;
+		mRuntimeLayerModel.MarkBuildStarted(layerId, "Runtime Slang build started for shader '" + shaderId + "'.", error);
+	}
+
+	auto bridge = std::make_unique<RuntimeShaderBridge>();
+	RuntimeShaderBridge* bridgePtr = bridge.get();
+	{
+		std::lock_guard<std::mutex> lock(mShaderBuildMutex);
+		mShaderBuilds[layerId] = std::move(bridge);
+	}
+
+	bridgePtr->Start(
+		layerId,
+		shaderId,
+		[this](const RuntimeShaderArtifact& artifact) {
+			if (MarkRuntimeBuildReady(artifact))
+				PublishRuntimeRenderLayers();
+		},
+		[this, layerId](const std::string& message) {
+			MarkRuntimeBuildFailedForLayer(layerId, message);
+			LogError("runtime-shader", "Runtime Slang build failed: " + message);
+		});
+}
+
+void RuntimeLayerController::RetireLayerShaderBuild(const std::string& layerId)
+{
+	std::unique_ptr<RuntimeShaderBridge> bridge;
+	{
+		std::lock_guard<std::mutex> lock(mShaderBuildMutex);
+		auto bridgeIt = mShaderBuilds.find(layerId);
+		if (bridgeIt == mShaderBuilds.end())
+			return;
+		bridge = std::move(bridgeIt->second);
+		mShaderBuilds.erase(bridgeIt);
+		bridge->RequestStop();
+		mRetiredShaderBuilds.push_back(std::move(bridge));
+	}
+}
+
+void RuntimeLayerController::CleanupRetiredShaderBuilds()
+{
+	std::vector<std::unique_ptr<RuntimeShaderBridge>> readyToStop;
+	{
+		std::lock_guard<std::mutex> lock(mShaderBuildMutex);
+		for (auto it = mRetiredShaderBuilds.begin(); it != mRetiredShaderBuilds.end();)
+		{
+			if ((*it)->CanStopWithoutWaiting())
+			{
+				readyToStop.push_back(std::move(*it));
+				it = mRetiredShaderBuilds.erase(it);
+				continue;
+			}
+			++it;
+		}
+	}
+
+	for (std::unique_ptr<RuntimeShaderBridge>& bridge : readyToStop)
+		bridge->Stop();
+}
+
+void RuntimeLayerController::StopAllRuntimeShaderBuilds()
+{
+	std::map<std::string, std::unique_ptr<RuntimeShaderBridge>> builds;
+	std::vector<std::unique_ptr<RuntimeShaderBridge>> retiredBuilds;
+	{
+		std::lock_guard<std::mutex> lock(mShaderBuildMutex);
+		builds.swap(mShaderBuilds);
+		retiredBuilds.swap(mRetiredShaderBuilds);
+	}
+	for (auto& entry : builds)
+		entry.second->Stop();
+	for (auto& bridge : retiredBuilds)
+		bridge->Stop();
+}
+
+std::string RuntimeLayerController::FirstRuntimeLayerId() const
+{
+	std::lock_guard<std::mutex> lock(mRuntimeLayerMutex);
+	return mRuntimeLayerModel.FirstLayerId();
+}
+}