render engine updates

apps/LoopThroughWithOpenGLCompositing/gl/RenderFrameStateResolver.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include "RenderFrameState.h"
+#include "RenderStateComposer.h"
+#include "RuntimeSnapshotProvider.h"
+
+#include <cstdint>
+#include <vector>
+
+class RenderFrameStateResolver
+{
+public:
+	explicit RenderFrameStateResolver(RuntimeSnapshotProvider& runtimeSnapshotProvider);
+
+	void StoreCommittedSnapshot(
+		const RuntimeRenderStateSnapshot& snapshot,
+		const std::vector<RuntimeRenderState>& committedLayerStates);
+	bool Resolve(
+		const RenderFrameInput& input,
+		const std::vector<RuntimeRenderState>& committedLayerStates,
+		RuntimeLiveState& liveState,
+		std::vector<RuntimeLiveOscCommitRequest>* commitRequests,
+		RenderFrameState& frameState);
+
+private:
+	std::vector<RuntimeRenderState> ComposeLayerStates(
+		const std::vector<RuntimeRenderState>& baseStates,
+		RuntimeLiveState& liveState,
+		bool allowCommit,
+		double smoothing,
+		std::vector<RuntimeLiveOscCommitRequest>* commitRequests) const;
+
+	RuntimeSnapshotProvider& mRuntimeSnapshotProvider;
+	RenderStateComposer mRenderStateComposer;
+	std::vector<RuntimeRenderState> mCachedLayerRenderStates;
+	uint64_t mCachedRenderStateVersion = 0;
+	uint64_t mCachedParameterStateVersion = 0;
+	unsigned mCachedRenderStateWidth = 0;
+	unsigned mCachedRenderStateHeight = 0;
+};