diff --git a/apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.cpp b/apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.cpp
index 92798e9..9d80e97 100644
--- a/apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.cpp
+++ b/apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.cpp
@@ -40,17 +40,6 @@ bool ShaderProgramCompiler::CompileLayerProgram(const RuntimeRenderState& state,
 	return CompilePreparedLayerProgram(state, passSources, layerProgram, errorMessageSize, errorMessage);
 }
 
-bool ShaderProgramCompiler::CompilePreparedLayerProgram(const RuntimeRenderState& state, const std::string& fragmentShaderSource, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage)
-{
-	std::vector<ShaderPassBuildSource> passSources;
-	ShaderPassBuildSource passSource;
-	passSource.passId = "main";
-	passSource.fragmentShaderSource = fragmentShaderSource;
-	passSource.outputName = "layerOutput";
-	passSources.push_back(std::move(passSource));
-	return CompilePreparedLayerProgram(state, passSources, layerProgram, errorMessageSize, errorMessage);
-}
-
 bool ShaderProgramCompiler::CompilePreparedLayerProgram(const RuntimeRenderState& state, const std::vector<ShaderPassBuildSource>& passSources, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage)
 {
 	GLsizei errorBufferSize = 0;
diff --git a/apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.h b/apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.h
index 40330ea..db2e38f 100644
--- a/apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.h
+++ b/apps/LoopThroughWithOpenGLCompositing/gl/shader/ShaderProgramCompiler.h
@@ -16,7 +16,6 @@ public:
 	ShaderProgramCompiler(OpenGLRenderer& renderer, RuntimeHost& runtimeHost, ShaderTextureBindings& textureBindings);
 
 	bool CompileLayerProgram(const RuntimeRenderState& state, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage);
-	bool CompilePreparedLayerProgram(const RuntimeRenderState& state, const std::string& fragmentShaderSource, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage);
 	bool CompilePreparedLayerProgram(const RuntimeRenderState& state, const std::vector<ShaderPassBuildSource>& passSources, LayerProgram& layerProgram, int errorMessageSize, char* errorMessage);
 	bool CompileDecodeShader(int errorMessageSize, char* errorMessage);
 	bool CompileOutputPackShader(int errorMessageSize, char* errorMessage);
diff --git a/apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeHost.cpp b/apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeHost.cpp
index 18f367c..a1569c7 100644
--- a/apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeHost.cpp
+++ b/apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeHost.cpp
@@ -1300,20 +1300,6 @@ bool RuntimeHost::TryAdvanceFrame()
 	return true;
 }
 
-bool RuntimeHost::BuildLayerFragmentShaderSource(const std::string& layerId, std::string& fragmentShaderSource, std::string& error)
-{
-	std::vector<ShaderPassBuildSource> passSources;
-	if (!BuildLayerPassFragmentShaderSources(layerId, passSources, error))
-		return false;
-	if (passSources.empty())
-	{
-		error = "Shader layer produced no compiled passes: " + layerId;
-		return false;
-	}
-	fragmentShaderSource = passSources.front().fragmentShaderSource;
-	return true;
-}
-
 bool RuntimeHost::BuildLayerPassFragmentShaderSources(const std::string& layerId, std::vector<ShaderPassBuildSource>& passSources, std::string& error)
 {
 	try
diff --git a/apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeHost.h b/apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeHost.h
index a9c6dbf..cbcd158 100644
--- a/apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeHost.h
+++ b/apps/LoopThroughWithOpenGLCompositing/runtime/RuntimeHost.h
@@ -51,7 +51,6 @@ public:
 	void AdvanceFrame();
 	bool TryAdvanceFrame();
 
-	bool BuildLayerFragmentShaderSource(const std::string& layerId, std::string& fragmentShaderSource, std::string& error);
 	bool BuildLayerPassFragmentShaderSources(const std::string& layerId, std::vector<ShaderPassBuildSource>& passSources, std::string& error);
 	std::vector<RuntimeRenderState> GetLayerRenderStates(unsigned outputWidth, unsigned outputHeight) const;
 	bool TryGetLayerRenderStates(unsigned outputWidth, unsigned outputHeight, std::vector<RuntimeRenderState>& states) const;
diff --git a/apps/LoopThroughWithOpenGLCompositing/shader/ShaderCompiler.cpp b/apps/LoopThroughWithOpenGLCompositing/shader/ShaderCompiler.cpp
index a7efd61..4d1c46e 100644
--- a/apps/LoopThroughWithOpenGLCompositing/shader/ShaderCompiler.cpp
+++ b/apps/LoopThroughWithOpenGLCompositing/shader/ShaderCompiler.cpp
@@ -143,16 +143,6 @@ ShaderCompiler::ShaderCompiler(
 {
 }
 
-bool ShaderCompiler::BuildLayerFragmentShaderSource(const ShaderPackage& shaderPackage, std::string& fragmentShaderSource, std::string& error) const
-{
-	if (shaderPackage.passes.empty())
-	{
-		error = "Shader package has no render passes: " + shaderPackage.id;
-		return false;
-	}
-	return BuildPassFragmentShaderSource(shaderPackage, shaderPackage.passes.front(), fragmentShaderSource, error);
-}
-
 bool ShaderCompiler::BuildPassFragmentShaderSource(const ShaderPackage& shaderPackage, const ShaderPassDefinition& pass, std::string& fragmentShaderSource, std::string& error) const
 {
 	std::string wrapperSource;
diff --git a/apps/LoopThroughWithOpenGLCompositing/shader/ShaderCompiler.h b/apps/LoopThroughWithOpenGLCompositing/shader/ShaderCompiler.h
index 8bf913d..9fc8c03 100644
--- a/apps/LoopThroughWithOpenGLCompositing/shader/ShaderCompiler.h
+++ b/apps/LoopThroughWithOpenGLCompositing/shader/ShaderCompiler.h
@@ -15,7 +15,6 @@ public:
 		const std::filesystem::path& patchedGlslPath,
 		unsigned maxTemporalHistoryFrames);
 
-	bool BuildLayerFragmentShaderSource(const ShaderPackage& shaderPackage, std::string& fragmentShaderSource, std::string& error) const;
 	bool BuildPassFragmentShaderSource(const ShaderPackage& shaderPackage, const ShaderPassDefinition& pass, std::string& fragmentShaderSource, std::string& error) const;
 
 private: