added GLFW error callback

include/scigl_render/gl_context.hpp

@@ -15,8 +15,7 @@ The copy constructor is deleted, use a shard_ptr.
 class GLContext
 {
 public:
-  GLContext(bool visible, bool fullscreen, int width, int height,
-            int version_major = 4, int version_minor = 3);
+  GLContext(bool visible, bool fullscreen, int width, int height, int version_major = 4, int version_minor = 3);
   GLContext(const GLContext&) = delete;
   ~GLContext();
 

src/gl_context.cpp

@@ -4,12 +4,17 @@
 #include <scigl_render/gl_context.hpp>
 #include <stdexcept>
 
+void glfw_error_callback(int error, const char* description)
+{
+  std::cerr << "GLFW Error code " << error << " description: " << description << std::endl;
+}
+
 namespace scigl_render
 {
-GLContext::GLContext(bool visible, bool fullscreen, int width, int height,
-                     int version_major, int version_minor)
+GLContext::GLContext(bool visible, bool fullscreen, int width, int height, int version_major, int version_minor)
   : width(width), height(height)
 {
+  glfwSetErrorCallback(&glfw_error_callback);
   glfwInit();
   // compability requirements
   glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, version_major);
@@ -23,8 +28,7 @@ GLContext::GLContext(bool visible, bool fullscreen, int width, int height,
   }
   if (fullscreen)
   {
-    window = glfwCreateWindow(width, height, "My Title",
-                              glfwGetPrimaryMonitor(), NULL);
+    window = glfwCreateWindow(width, height, "My Title", glfwGetPrimaryMonitor(), NULL);
   }
   else
   {
@@ -42,12 +46,11 @@ GLContext::GLContext(bool visible, bool fullscreen, int width, int height,
   }
   if (!gl3wIsSupported(version_major, version_minor))
   {
-    throw std::runtime_error("OpenGL " + std::to_string(version_major) + "." +
-                             std::to_string(version_minor) + " not supported");
+    throw std::runtime_error("OpenGL " + std::to_string(version_major) + "." + std::to_string(version_minor) +
+                             " not supported");
   }
   std::cout << "OpenGL Version: " << glGetString(GL_VERSION)
-            << " GLSL Version: " << glGetString(GL_SHADING_LANGUAGE_VERSION)
-            << "\n";
+            << " GLSL Version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << "\n";
   std::cout << "width " << width << " height " << height << "\n";
   glViewport(0, 0, width, height);
 }
@@ -89,8 +92,7 @@ void GLContext::set_fullscreen(bool enabled)
     auto mode = glfwGetVideoMode(monitor);
     int x_pos, y_pos;
     glfwGetMonitorPos(monitor, &x_pos, &y_pos);
-    glfwSetWindowMonitor(window, monitor, 0, 0, width, height,
-                         mode->refreshRate);
+    glfwSetWindowMonitor(window, monitor, 0, 0, width, height, mode->refreshRate);
   }
   // switch to windowed
   if (!enabled && is_fullscreen())
@@ -98,8 +100,7 @@ void GLContext::set_fullscreen(bool enabled)
     auto monitor = glfwGetWindowMonitor(window);
     int x_pos, y_pos;
     glfwGetMonitorPos(monitor, &x_pos, &y_pos);
-    glfwSetWindowMonitor(window, NULL, x_pos, y_pos, width, height,
-                         GLFW_DONT_CARE);
+    glfwSetWindowMonitor(window, NULL, x_pos, y_pos, width, height, GLFW_DONT_CARE);
   }
   glfwSwapBuffers(window);
 }