[doc] Added disclaimer to the doc

README.md

@@ -40,6 +40,12 @@ license](http://www.apache.org/licenses/LICENSE-2.0).
 | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: |
 | Path traced image of a variation of the Nishita Sky Demo scene from Blender Studio (CC0) without and with using Open PGL to guide directional samples (i.e., on surfaces and inside the water volume). |
 
+# Disclaimer
+
+The current version of Open PGL is still in a beta stage and should be
+used with caution in any production related environment. The API
+specification is still in flux and might change with upcoming releases.
+
 # Version History
 
 ## Open PGL 0.3.0

doc/Makefile

@@ -43,7 +43,7 @@ tmpdir:
 ## Markdown
 ## ----------------------------------------------------------------------------
 
-../README.md: tmp/readme_head.md overview.md examples.md changelog.md support.md compilation.md tmp/including.md api.md related_projects.md
+../README.md: tmp/readme_head.md overview.md examples.md disclaimer.md changelog.md support.md compilation.md tmp/including.md api.md related_projects.md
 	$(PANDOC) $+ -t gfm > $@
 
 ## ----------------------------------------------------------------------------

doc/disclaimer.md

@@ -0,0 +1,4 @@
+Disclaimer
+===============
+
+The current version of Open PGL is still in a beta stage and should be used with caution in any production related environment. The API specification is still in flux and might change with upcoming releases.

openpgl/field/Field.h

@@ -305,7 +305,9 @@ struct Field
     inline void fitRegions(SampleContainer& samples)
     {
         size_t nGuidingRegions = m_regionStorageContainer.size();
+#if defined( OPENPGL_SHOW_PRINT_OUTS)
         std::cout << "fitRegion: "<< (m_isSurface? "surface":"volume") << "\tnGuidingRegions = " << nGuidingRegions << std::endl;
+#endif
 #if defined(OPENPGL_USE_OMP_THREADING)
         #pragma omp parallel for num_threads(this->m_nCores) schedule(dynamic)
         for (size_t n=0; n < nGuidingRegions; n++)
@@ -353,7 +355,9 @@ struct Field
     void updateRegions(SampleContainer& samples)
     {
         size_t nGuidingRegions = m_regionStorageContainer.size();
+#if defined( OPENPGL_SHOW_PRINT_OUTS)
         std::cout << "updateRegion: " << (m_isSurface? "surface":"volume") << "\tnGuidingRegions = " << nGuidingRegions << std::endl;
+#endif
 #if defined(OPENPGL_USE_OMP_THREADING)
         #pragma omp parallel for num_threads(this->m_nCores) schedule(dynamic)
         for (size_t n=0; n < nGuidingRegions; n++)