GraphicsContext.cpp
1 //
3 // SFML - Simple and Fast Multimedia Library
4 // Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)
5 //
6 // This software is provided 'as-is', without any express or implied warranty.
7 // In no event will the authors be held liable for any damages arising from the use of this software.
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10 // including commercial applications, and to alter it and redistribute it freely,
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12 //
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15 // If you use this software in a product, an acknowledgment
16 // in the product documentation would be appreciated but is not required.
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22 //
24 
26 // Headers
28 #include <SFML/Graphics/GraphicsContext.hpp>
29 #include <SFML/Window/Context.hpp>
30 
31 
32 namespace
33 {
35  // One time initialization of 3rd party libraries.
36  // We use a global function with a static boolean rather
37  // than directly a global boolean, to avoid the randomness
38  // of global variables initializations across compile units.
40  void InitGraphicsLibs()
41  {
42  static bool InitDone = false;
43  if (!InitDone)
44  {
45  // Initialize GLEW
46  glewInit();
47 
48  InitDone = true;
49  }
50  }
51 
52 }
53 
54 
55 namespace sf
56 {
57 namespace priv
58 {
63 GraphicsContext::GraphicsContext()
64 {
65  // Activate the global context
67  {
69  myActivated = true;
70  }
71  else
72  {
73  myActivated = false;
74  }
75 
76  // Make sure third party libraries are initialized
77  InitGraphicsLibs();
78 }
79 
80 
85 GraphicsContext::~GraphicsContext()
86 {
87  // Deactivate the global context
88  if (myActivated)
90 }
91 
92 } // namespace priv
93 
94 } // namespace sf
static Context & GetGlobal()
Get the global context.
Definition: Context.cpp:80
void SetActive(bool Active)
Activate or deactivate the context.
Definition: Context.cpp:62
static bool IsContextActive()
Check if there's a context bound to the current thread.
Definition: Context.cpp:71