Shader compile thread seperation

apps/LoopThroughWithOpenGLCompositing/gl/OpenGLComposite.h

@@ -17,6 +17,7 @@
 #include "RuntimeHost.h"
 
 #include <functional>
+#include <atomic>
 #include <map>
 #include <memory>
 #include <string>
@@ -28,6 +29,7 @@ class OpenGLDeckLinkBridge;
 class OpenGLRenderPass;
 class OpenGLShaderPrograms;
 class RuntimeServices;
+class ShaderBuildQueue;
 
 
 class OpenGLComposite
@@ -81,12 +83,15 @@ private:
 	std::unique_ptr<OpenGLDeckLinkBridge>	mDeckLinkBridge;
 	std::unique_ptr<OpenGLRenderPass>		mRenderPass;
 	std::unique_ptr<OpenGLShaderPrograms>	mShaderPrograms;
+	std::unique_ptr<ShaderBuildQueue>		mShaderBuildQueue;
 	std::unique_ptr<RuntimeServices>		mRuntimeServices;
 	std::vector<RuntimeRenderState>			mCachedLayerRenderStates;
+	std::atomic<bool>						mUseCommittedLayerStates;
 
 	bool InitOpenGLState();
 	void renderEffect();
 	bool ProcessRuntimePollResults();
+	void RequestShaderBuild();
 	void broadcastRuntimeState();
 	void resetTemporalHistoryState();
 };