Pass 3

apps/LoopThroughWithOpenGLCompositing/runtime/RenderSnapshotBuilder.h

@@ -0,0 +1,43 @@
+#pragma once
+
+#include "ShaderTypes.h"
+
+#include <atomic>
+#include <cstdint>
+#include <string>
+#include <vector>
+
+class RuntimeStore;
+
+struct RuntimeSnapshotVersions
+{
+	uint64_t renderStateVersion = 0;
+	uint64_t parameterStateVersion = 0;
+};
+
+class RenderSnapshotBuilder
+{
+public:
+	explicit RenderSnapshotBuilder(RuntimeStore& runtimeStore);
+
+	bool BuildLayerPassFragmentShaderSources(const std::string& layerId, std::vector<ShaderPassBuildSource>& passSources, std::string& error) const;
+	unsigned GetMaxTemporalHistoryFrames() const;
+	RuntimeSnapshotVersions GetVersions() const;
+	void AdvanceFrame();
+	void BuildLayerRenderStates(unsigned outputWidth, unsigned outputHeight, std::vector<RuntimeRenderState>& states) const;
+	bool TryBuildLayerRenderStates(unsigned outputWidth, unsigned outputHeight, std::vector<RuntimeRenderState>& states) const;
+	bool TryRefreshLayerParameters(std::vector<RuntimeRenderState>& states) const;
+	void RefreshDynamicRenderStateFields(std::vector<RuntimeRenderState>& states) const;
+	void MarkRenderStateDirty();
+	void MarkParameterStateDirty();
+
+private:
+	void BuildLayerRenderStatesLocked(unsigned outputWidth, unsigned outputHeight, std::vector<RuntimeRenderState>& states) const;
+	void RefreshLayerParametersLocked(std::vector<RuntimeRenderState>& states) const;
+	void RefreshDynamicRenderStateFieldsLocked(std::vector<RuntimeRenderState>& states) const;
+
+	RuntimeStore& mRuntimeStore;
+	std::atomic<uint64_t> mFrameCounter{ 0 };
+	std::atomic<uint64_t> mRenderStateVersion{ 0 };
+	std::atomic<uint64_t> mParameterStateVersion{ 0 };
+};