add command-line option for swap interval

diff --git a/Makefile b/Makefile
index 307458092c8e632d223c55324dad6759d12b2e85..c07c0fc69e65c63a5b44dce415322a878c30bdc0 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -6,10 +6,10 @@ COMMON_HDR = glwindow.h
 all: glxtest egltest eglinfo
 
 glxtest: $(COMMON_SRC) $(COMMON_HDR) glxbackend.cpp glxbackend.h
-       g++ $(FLAGS) -DUSE_GLX $(COMMON_SRC) glxbackend.cpp -lGL -lX11 -o glxtest
+       g++ $(FLAGS) -DUSE_GLX $(COMMON_SRC) glxbackend.cpp -lGL -lX11 -lboost_program_options -o glxtest
 
 egltest: $(COMMON_SRC) $(COMMON_HDR) eglbackend.cpp eglbackend.h
-       g++ $(FLAGS) -DUSE_EGL $(COMMON_SRC) eglbackend.cpp -lEGL -lGL -lX11 -o egltest
+       g++ $(FLAGS) -DUSE_EGL $(COMMON_SRC) eglbackend.cpp -lEGL -lGL -lX11 -lboost_program_options -o egltest
 
 eglinfo: eglinfo.c
        gcc $(FLAGS) eglinfo.c -lEGL -lGL -lX11 -o eglinfo

diff --git a/gltest.cpp b/gltest.cpp
index 2b6105c3d9b3b3da56600cb7be960de0a819eafb..8d296a3991965e965e0c3ac1e7e0c03eba4a6c53 100644 (file)
--- a/gltest.cpp
+++ b/gltest.cpp
@@ -7,6 +7,9 @@
 #include <unistd.h>
 #include <assert.h>
 #include <GL/gl.h>
+#include <boost/program_options.hpp>
+
+namespace po = boost::program_options;
 
 // include proper GL connector
 #include "glwindow.h"
@@ -53,10 +56,13 @@ public:
        TearTestWindow() : GLWindow(XOpenDisplay(0), createGLBackend()), boxPos(0), boxDirection(1)
        {}
 
+       void setSwapInterval(int i) {
+               getBackend()->setSwapInterval(i);
+       }
+
 protected:
        virtual void initGL()
        {
-               getBackend()->setSwapInterval(1);
                // initialize GL proper
                glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
                glDisable(GL_DEPTH_TEST);
@@ -179,7 +185,25 @@ private:
 
 int main(int argc, char ** argv)
 {
+       // program options handling
+       po::options_description desc("Allowed options");
+       desc.add_options()
+               ("help,h", "produce help message")
+               ("swap-interval,i", po::value<int>(), "set swap interval")
+       ;
+       po::variables_map vm;
+       po::store(po::parse_command_line(argc, argv, desc), vm);
+       po::notify(vm);
+
+       if (vm.count("help")) {
+               std::cout << desc << "\n";
+               return 1;
+       }
+
+       // actual program
        TearTestWindow w;
        w.open(800, 600);
+       if (vm.count("swap-interval"))
+               w.setSwapInterval(vm["swap-interval"].as<int>());
        w.exec();
 }