From a0211a1c2f63babdbf03c7d30d423edefdded97a Mon Sep 17 00:00:00 2001
From: Maksim Shabunin <maksim.shabunin@gmail.com>
Date: Mon, 24 Sep 2018 13:09:18 +0300
Subject: [PATCH] Moved OpenGL sample to opengl folder

---
 samples/cpp/CMakeLists.txt         |  3 ---
 samples/gpu/CMakeLists.txt         |  3 ---
 samples/opengl/CMakeLists.txt      | 18 +++++++++---------
 samples/{gpu => opengl}/opengl.cpp |  0
 4 files changed, 9 insertions(+), 15 deletions(-)
 rename samples/{gpu => opengl}/opengl.cpp (100%)

diff --git a/samples/cpp/CMakeLists.txt b/samples/cpp/CMakeLists.txt
index d12cc9d7d6..c3786aaf74 100644
--- a/samples/cpp/CMakeLists.txt
+++ b/samples/cpp/CMakeLists.txt
@@ -27,9 +27,6 @@ endif()
 project(cpp_samples)
 ocv_include_modules_recurse(${OPENCV_CPP_SAMPLES_REQUIRED_DEPS})
 file(GLOB_RECURSE cpp_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
-if(NOT HAVE_OPENGL)
-  ocv_list_filterout(cpp_samples Qt_sample)
-endif()
 if(NOT HAVE_opencv_cudaarithm OR NOT HAVE_opencv_cudafilters)
   ocv_list_filterout(cpp_samples "/gpu/")
 endif()
diff --git a/samples/gpu/CMakeLists.txt b/samples/gpu/CMakeLists.txt
index 1c65145aca..6aa6b87afa 100644
--- a/samples/gpu/CMakeLists.txt
+++ b/samples/gpu/CMakeLists.txt
@@ -50,9 +50,6 @@ if((CV_GCC OR CV_CLANG) AND NOT ENABLE_NOISY_WARNINGS)
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-function")
 endif()
 file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
-if(NOT HAVE_OPENGL)
-  ocv_list_filterout(all_samples "opengl")
-endif()
 foreach(sample_filename ${all_samples})
   ocv_define_sample(tgt ${sample_filename} gpu)
   ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_CUDA_SAMPLES_REQUIRED_DEPS})
diff --git a/samples/opengl/CMakeLists.txt b/samples/opengl/CMakeLists.txt
index e383abd899..31a075c0cf 100644
--- a/samples/opengl/CMakeLists.txt
+++ b/samples/opengl/CMakeLists.txt
@@ -1,15 +1,9 @@
 if(APPLE)
-    return()
+  return()
 endif()
 
 if(UNIX)
   find_package(X11 QUIET)
-  if(NOT X11_FOUND)
-    message(STATUS "OpenGL samples require development files for libX11")
-    return()
-  endif()
-  include_directories(${X11_INCLUDE_DIR})
-  set(SAMPLE_LINKER_DEPS "${X11_LIBRARIES}")
 endif()
 
 SET(OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS
@@ -24,10 +18,16 @@ if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
   project(opengl_samples)
   ocv_include_modules_recurse(${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS})
   file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+  if(NOT X11_FOUND)
+    ocv_list_filterout(all_samples "opengl_interop")
+  endif()
   foreach(sample_filename ${all_samples})
     ocv_define_sample(tgt ${sample_filename} opengl)
-    ocv_target_link_libraries(${tgt}
-      ${OPENCV_LINKER_LIBS} ${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS} ${SAMPLE_LINKER_DEPS})
+    ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS})
+    if(sample_filename STREQUAL "opengl_interop.cpp")
+      ocv_target_link_libraries(${tgt} ${X11_LIBRARIES})
+      ocv_target_include_directories(${tgt} ${X11_INCLUDE_DIR})
+    endif()
   endforeach()
 endif()
 
diff --git a/samples/gpu/opengl.cpp b/samples/opengl/opengl.cpp
similarity index 100%
rename from samples/gpu/opengl.cpp
rename to samples/opengl/opengl.cpp