GL Studio C++ Runtime API
gls_state_manager.h
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1 /*! \file
2  \brief The disti::GlsStateManager factory class. Creates an instance of a
3 state manager that manages the GL Studio runtime library's use of
4 the OpenGL context, minimizing unnecessary state changes.
5 
6  \par Copyright Information
7 
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21 
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42 
43 */
44 
45 #ifndef DISTI_GLS_STATE_MANAGER_H_INCLUDED
46 #define DISTI_GLS_STATE_MANAGER_H_INCLUDED
47 
49 
50 #ifdef GLES20
52 #endif
53 
54 #ifdef GLS_GL_DEBUGGING
55 # define ERROR_CHECK() DistiAssert( GL_NO_ERROR == GlsStateManager::CheckError() );
56 #else
57 # define ERROR_CHECK()
58 #endif // GLS_GL_DEBUGGING
59 
60 namespace disti
61 {
62 /** The GlsStateManager singleton class that holds an instance of a
63  * state manager that manages the GL Studio runtime library's use of
64  * the OpenGL context, minimizing unnecessary state changes.
65  */
67 {
68 public:
69  /** The singleton accessor method for an implementation of an IGlsStateManager, which manages
70  * the GL Studio runtime library's use of the OpenGL context, minimizing unnecessary state changes
71  * \return Returns a pointer to the IGlsStateManager implementation singleton.
72  * For OpenGL ES 2.0, returns an implementation of an IGlsStateManagerES20
73  */
74  GLS_EXPORT static IGlsStateManager* Instance( void );
75 
76  /** returns the value of glGetError(), and prints the value if not equal to GL_NO_ERROR
77  */
78  GLS_EXPORT static GLenum CheckError();
79 
80 private:
81  /** ctor */
82  GlsStateManager( void );
83 
84  /** dtor */
85  ~GlsStateManager();
86 
87  // Creates the proper instance for management by GlsGlobals
88  static IGlsStateManager* CreateStateManager();
89  friend class GlsGlobals;
90 };
91 
92 } // namespace disti
93 
94 #endif // DISTI_GLS_STATE_MANAGER_H_INCLUDED
static IGlsStateManager * Instance(void)
IGlsStateManager, interface to a state manager that manages the GL Studio runtime library's use of th...
IGlsStateManager, interface to a state manager that manages the GL Studio runtime library's use of th...
Hold global objects so we can control order of destruction.
Definition: util.h:1682
Definition: gls_state_manager_interface.h:67
Definition: gls_state_manager.h:66
Definition: bmpimage.h:46
static GLenum CheckError()