diff --git a/code/nel/tools/pipeline/plugin_library/pipeline_process.h b/code/nel/tools/pipeline/plugin_library/pipeline_process.h
index 260225748..68256407d 100644
--- a/code/nel/tools/pipeline/plugin_library/pipeline_process.h
+++ b/code/nel/tools/pipeline/plugin_library/pipeline_process.h
@@ -89,8 +89,12 @@ public:
 
 	/// Find out if the plugin needs to rebuild. Input can be files or directories, output can only be files
 	virtual bool needsToBeRebuilt(const std::vector<std::string> &inputPaths, const std::vector<std::string> &outputPaths) = 0;
+	bool needsToBeRebuilt(const std::vector<std::string> &inputPaths, const std::string &outputPath) { std::vector<std::string> outputPaths; outputPaths.push_back(outputPath); return needsToBeRebuilt(inputPaths, outputPaths); }
+	bool needsToBeRebuilt(const std::string &inputPath, const std::vector<std::string> &outputPaths) { std::vector<std::string> inputPaths; inputPaths.push_back(inputPath); return needsToBeRebuilt(inputPaths, outputPaths); }
+	bool needsToBeRebuilt(const std::string &inputPath, const std::string &outputPath) { std::vector<std::string> inputPaths; inputPaths.push_back(inputPath); std::vector<std::string> outputPaths; outputPaths.push_back(outputPath); return needsToBeRebuilt(inputPaths, outputPaths); }
 	/// Find out if the plugin needs to rebuild. Input can only be files. Must request the service to write an .output metafile during depend log parsing.
 	virtual bool needsToBeRebuilt(const std::vector<std::string> &inputPaths) = 0;
+	bool needsToBeRebuilt(const std::string &inputPath) { std::vector<std::string> inputPaths; inputPaths.push_back(inputPath); return needsToBeRebuilt(inputPaths); }
 
 	/// Parse the depend and error logs. Only set writeOutputMeta true if the output is not known in advance by the plugin, see needsToBeRebuilt
 	virtual void parseToolLog(const std::string &dependLogFile, const std::string &errorLogFile, bool writeOutputMeta) = 0;
diff --git a/code/nel/tools/pipeline/plugin_nel/process_interface.cpp b/code/nel/tools/pipeline/plugin_nel/process_interface.cpp
index e97b4ceec..9d8f07732 100644
--- a/code/nel/tools/pipeline/plugin_nel/process_interface.cpp
+++ b/code/nel/tools/pipeline/plugin_nel/process_interface.cpp
@@ -29,6 +29,7 @@
 #include "process_interface.h"
 
 // STL includes
+#include <sstream>
 
 // NeL includes
 #include <nel/misc/debug.h>
@@ -50,10 +51,47 @@ CProcessInterface::~CProcessInterface()
 	
 }
 
+void CProcessInterface::buildAtlas(const std::vector<std::string> &srcDirectories, const std::string &dstFile)
+{
+	nldebug("Build atlas '%s'", dstFile.c_str());
+}
+
 void CProcessInterface::build()
 {
 	nldebug("Building process interface!");
 
+	{
+		uint nb;
+		if (m_PipelineProcess->getValueNb(nb, "Interface.Atlas"))
+		{
+			for (uint i = 0; i < nb; ++i)
+			{
+				std::vector<std::string> srcDirectories;
+				{
+					std::stringstream ss;
+					ss << "Interface.Atlas[" << i << "].SrcDirectories";
+					if (!m_PipelineProcess->getValues(srcDirectories, ss.str())) break;
+				}
+				std::string dstFile;
+				{
+					std::stringstream ss;
+					ss << "Interface.Atlas[" << i << "].DstFile";
+					if (!m_PipelineProcess->getValue(dstFile, ss.str())) break;
+				}
+				// GO
+				if (m_PipelineProcess->needsToBeRebuilt(srcDirectories, dstFile))
+				{
+					// TODO
+					nldebug("Need to rebuild");
+					m_PipelineProcess->parseToolLog("", "", false);
+				}
+				else nldebug("Don't need to rebuild");
+				if (m_PipelineProcess->needsExit())
+					return;
+			}
+		}
+	}
+
 	m_PipelineProcess->setExit(FINISH_ERROR, "Not yet implemented");
 }
 
diff --git a/code/nel/tools/pipeline/plugin_nel/process_interface.h b/code/nel/tools/pipeline/plugin_nel/process_interface.h
index 9220002fa..d69b95041 100644
--- a/code/nel/tools/pipeline/plugin_nel/process_interface.h
+++ b/code/nel/tools/pipeline/plugin_nel/process_interface.h
@@ -50,6 +50,8 @@ public:
 	CProcessInterface();
 	virtual ~CProcessInterface();
 
+	void buildAtlas(const std::vector<std::string> &srcDirectories, const std::string &dstFile);
+
 	virtual void build();
 
 	NLMISC_DECLARE_CLASS(CProcessInterface)
diff --git a/code/nel/tools/pipeline/service/module_pipeline_slave.cpp b/code/nel/tools/pipeline/service/module_pipeline_slave.cpp
index 141c86dd1..746e77195 100644
--- a/code/nel/tools/pipeline/service/module_pipeline_slave.cpp
+++ b/code/nel/tools/pipeline/service/module_pipeline_slave.cpp
@@ -524,7 +524,7 @@ public:
 				{
 					PIPELINE::IProcessHandler *processHandler = static_cast<PIPELINE::IProcessHandler *>(NLMISC::CClassRegistry::create(m_Slave->m_ActiveProcess->m_ActivePlugin.Handler));
 					processHandler->setPipelineProcess(m_Slave->m_ActiveProcess);
-					m_Slave->m_ActiveProcess->m_SubTaskResult = FINISH_NOT;
+					m_Slave->m_ActiveProcess->m_SubTaskResult = FINISH_SUCCESS;
 					processHandler->build();
 				}
 				break;
diff --git a/code/nel/tools/pipeline/service/pipeline_process_impl_toollog.cpp b/code/nel/tools/pipeline/service/pipeline_process_impl_toollog.cpp
index 009ccf9ce..078d50883 100644
--- a/code/nel/tools/pipeline/service/pipeline_process_impl_toollog.cpp
+++ b/code/nel/tools/pipeline/service/pipeline_process_impl_toollog.cpp
@@ -47,7 +47,7 @@ namespace PIPELINE {
 
 void CPipelineProcessImpl::parseToolLog(const std::string &dependLogFile, const std::string &errorLogFile, bool writeOutputMeta)
 {
-	
+	m_SubTaskResult = FINISH_SUCCESS;
 }
 
 } /* namespace PIPELINE */