gtkseisviewglsl.c

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          supported &= (gdk_gl_get_glUniform2fvARB () != NULL);
          supported &= (gdk_gl_get_glUniform3fvARB () != NULL);
          supported &= (gdk_gl_get_glUniform4fvARB () != NULL);
          supported &= (gdk_gl_get_glUniform1ivARB () != NULL);
          supported &= (gdk_gl_get_glUniform2ivARB () != NULL);
          supported &= (gdk_gl_get_glUniform3ivARB () != NULL);
          supported &= (gdk_gl_get_glUniform4ivARB () != NULL);
          supported &= (gdk_gl_get_glUniformMatrix2fvARB () != NULL);
          supported &= (gdk_gl_get_glUniformMatrix3fvARB () != NULL);
          supported &= (gdk_gl_get_glUniformMatrix4fvARB () != NULL);
          supported &= (gdk_gl_get_glGetObjectParameterfvARB () != NULL);
          supported &= (gdk_gl_get_glGetObjectParameterivARB () != NULL);
          supported &= (gdk_gl_get_glGetInfoLogARB () != NULL);
          supported &= (gdk_gl_get_glGetAttachedObjectsARB () != NULL);
          supported &= (gdk_gl_get_glGetUniformLocationARB () != NULL);
          supported &= (gdk_gl_get_glGetActiveUniformARB () != NULL);
          supported &= (gdk_gl_get_glGetUniformfvARB () != NULL);
          supported &= (gdk_gl_get_glGetUniformivARB () != NULL);
          supported &= (gdk_gl_get_glGetShaderSourceARB () != NULL);
        }
    }

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_GL_ARB_shader_objects () - %s",
               (supported) ? "supported" : "not supported"));

  if (!supported)
    return NULL;

  return &_procs_GL_ARB_shader_objects;
}

/*
 * GL_EXT_framebuffer_object
 */

static GdkGL_GL_EXT_framebuffer_object _procs_GL_EXT_framebuffer_object = {
  (GdkGLProc_glIsRenderbufferEXT) -1,
  (GdkGLProc_glBindRenderbufferEXT) -1,
  (GdkGLProc_glDeleteRenderbuffersEXT) -1,
  (GdkGLProc_glGenRenderbuffersEXT) -1,
  (GdkGLProc_glRenderbufferStorageEXT) -1,
  (GdkGLProc_glGetRenderbufferParameterivEXT) -1,
  (GdkGLProc_glIsFramebufferEXT) -1,
  (GdkGLProc_glBindFramebufferEXT) -1,
  (GdkGLProc_glDeleteFramebuffersEXT) -1,
  (GdkGLProc_glGenFramebuffersEXT) -1,
  (GdkGLProc_glCheckFramebufferStatusEXT) -1,
  (GdkGLProc_glFramebufferTexture1DEXT) -1,
  (GdkGLProc_glFramebufferTexture2DEXT) -1,
  (GdkGLProc_glFramebufferTexture3DEXT) -1,
  (GdkGLProc_glFramebufferRenderbufferEXT) -1,
  (GdkGLProc_glGetFramebufferAttachmentParameterivEXT) -1,
  (GdkGLProc_glGenerateMipmapEXT) -1
};

/* glIsRenderbufferEXT */
GdkGLProc
gdk_gl_get_glIsRenderbufferEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glIsRenderbufferEXT == (GdkGLProc_glIsRenderbufferEXT) -1)
    _procs_GL_EXT_framebuffer_object.glIsRenderbufferEXT =
      (GdkGLProc_glIsRenderbufferEXT) gdk_gl_get_proc_address ("glIsRenderbufferEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glIsRenderbufferEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glIsRenderbufferEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glIsRenderbufferEXT);
}

/* glBindRenderbufferEXT */
GdkGLProc
gdk_gl_get_glBindRenderbufferEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glBindRenderbufferEXT == (GdkGLProc_glBindRenderbufferEXT) -1)
    _procs_GL_EXT_framebuffer_object.glBindRenderbufferEXT =
      (GdkGLProc_glBindRenderbufferEXT) gdk_gl_get_proc_address ("glBindRenderbufferEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glBindRenderbufferEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glBindRenderbufferEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glBindRenderbufferEXT);
}

/* glDeleteRenderbuffersEXT */
GdkGLProc
gdk_gl_get_glDeleteRenderbuffersEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glDeleteRenderbuffersEXT == (GdkGLProc_glDeleteRenderbuffersEXT) -1)
    _procs_GL_EXT_framebuffer_object.glDeleteRenderbuffersEXT =
      (GdkGLProc_glDeleteRenderbuffersEXT) gdk_gl_get_proc_address ("glDeleteRenderbuffersEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glDeleteRenderbuffersEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glDeleteRenderbuffersEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glDeleteRenderbuffersEXT);
}

/* glGenRenderbuffersEXT */
GdkGLProc
gdk_gl_get_glGenRenderbuffersEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glGenRenderbuffersEXT == (GdkGLProc_glGenRenderbuffersEXT) -1)
    _procs_GL_EXT_framebuffer_object.glGenRenderbuffersEXT =
      (GdkGLProc_glGenRenderbuffersEXT) gdk_gl_get_proc_address ("glGenRenderbuffersEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glGenRenderbuffersEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glGenRenderbuffersEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glGenRenderbuffersEXT);
}

/* glRenderbufferStorageEXT */
GdkGLProc
gdk_gl_get_glRenderbufferStorageEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glRenderbufferStorageEXT == (GdkGLProc_glRenderbufferStorageEXT) -1)
    _procs_GL_EXT_framebuffer_object.glRenderbufferStorageEXT =
      (GdkGLProc_glRenderbufferStorageEXT) gdk_gl_get_proc_address ("glRenderbufferStorageEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glRenderbufferStorageEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glRenderbufferStorageEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glRenderbufferStorageEXT);
}

/* glGetRenderbufferParameterivEXT */
GdkGLProc
gdk_gl_get_glGetRenderbufferParameterivEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glGetRenderbufferParameterivEXT == (GdkGLProc_glGetRenderbufferParameterivEXT) -1)
    _procs_GL_EXT_framebuffer_object.glGetRenderbufferParameterivEXT =
      (GdkGLProc_glGetRenderbufferParameterivEXT) gdk_gl_get_proc_address ("glGetRenderbufferParameterivEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glGetRenderbufferParameterivEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glGetRenderbufferParameterivEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glGetRenderbufferParameterivEXT);
}

/* glIsFramebufferEXT */
GdkGLProc
gdk_gl_get_glIsFramebufferEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glIsFramebufferEXT == (GdkGLProc_glIsFramebufferEXT) -1)
    _procs_GL_EXT_framebuffer_object.glIsFramebufferEXT =
      (GdkGLProc_glIsFramebufferEXT) gdk_gl_get_proc_address ("glIsFramebufferEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glIsFramebufferEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glIsFramebufferEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glIsFramebufferEXT);
}

/* glBindFramebufferEXT */
GdkGLProc
gdk_gl_get_glBindFramebufferEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glBindFramebufferEXT == (GdkGLProc_glBindFramebufferEXT) -1)
    _procs_GL_EXT_framebuffer_object.glBindFramebufferEXT =
      (GdkGLProc_glBindFramebufferEXT) gdk_gl_get_proc_address ("glBindFramebufferEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glBindFramebufferEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glBindFramebufferEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glBindFramebufferEXT);
}

/* glDeleteFramebuffersEXT */
GdkGLProc
gdk_gl_get_glDeleteFramebuffersEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glDeleteFramebuffersEXT == (GdkGLProc_glDeleteFramebuffersEXT) -1)
    _procs_GL_EXT_framebuffer_object.glDeleteFramebuffersEXT =
      (GdkGLProc_glDeleteFramebuffersEXT) gdk_gl_get_proc_address ("glDeleteFramebuffersEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glDeleteFramebuffersEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glDeleteFramebuffersEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glDeleteFramebuffersEXT);
}

/* glGenFramebuffersEXT */
GdkGLProc
gdk_gl_get_glGenFramebuffersEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glGenFramebuffersEXT == (GdkGLProc_glGenFramebuffersEXT) -1)
    _procs_GL_EXT_framebuffer_object.glGenFramebuffersEXT =
      (GdkGLProc_glGenFramebuffersEXT) gdk_gl_get_proc_address ("glGenFramebuffersEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glGenFramebuffersEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glGenFramebuffersEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glGenFramebuffersEXT);
}

/* glCheckFramebufferStatusEXT */
GdkGLProc
gdk_gl_get_glCheckFramebufferStatusEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glCheckFramebufferStatusEXT == (GdkGLProc_glCheckFramebufferStatusEXT) -1)
    _procs_GL_EXT_framebuffer_object.glCheckFramebufferStatusEXT =
      (GdkGLProc_glCheckFramebufferStatusEXT) gdk_gl_get_proc_address ("glCheckFramebufferStatusEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glCheckFramebufferStatusEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glCheckFramebufferStatusEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glCheckFramebufferStatusEXT);
}

/* glFramebufferTexture1DEXT */
GdkGLProc
gdk_gl_get_glFramebufferTexture1DEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glFramebufferTexture1DEXT == (GdkGLProc_glFramebufferTexture1DEXT) -1)
    _procs_GL_EXT_framebuffer_object.glFramebufferTexture1DEXT =
      (GdkGLProc_glFramebufferTexture1DEXT) gdk_gl_get_proc_address ("glFramebufferTexture1DEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glFramebufferTexture1DEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glFramebufferTexture1DEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glFramebufferTexture1DEXT);
}

/* glFramebufferTexture2DEXT */
GdkGLProc
gdk_gl_get_glFramebufferTexture2DEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glFramebufferTexture2DEXT == (GdkGLProc_glFramebufferTexture2DEXT) -1)
    _procs_GL_EXT_framebuffer_object.glFramebufferTexture2DEXT =
      (GdkGLProc_glFramebufferTexture2DEXT) gdk_gl_get_proc_address ("glFramebufferTexture2DEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glFramebufferTexture2DEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glFramebufferTexture2DEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glFramebufferTexture2DEXT);
}

/* glFramebufferTexture3DEXT */
GdkGLProc
gdk_gl_get_glFramebufferTexture3DEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glFramebufferTexture3DEXT == (GdkGLProc_glFramebufferTexture3DEXT) -1)
    _procs_GL_EXT_framebuffer_object.glFramebufferTexture3DEXT =
      (GdkGLProc_glFramebufferTexture3DEXT) gdk_gl_get_proc_address ("glFramebufferTexture3DEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glFramebufferTexture3DEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glFramebufferTexture3DEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glFramebufferTexture3DEXT);
}

/* glFramebufferRenderbufferEXT */
GdkGLProc
gdk_gl_get_glFramebufferRenderbufferEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glFramebufferRenderbufferEXT == (GdkGLProc_glFramebufferRenderbufferEXT) -1)
    _procs_GL_EXT_framebuffer_object.glFramebufferRenderbufferEXT =
      (GdkGLProc_glFramebufferRenderbufferEXT) gdk_gl_get_proc_address ("glFramebufferRenderbufferEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glFramebufferRenderbufferEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glFramebufferRenderbufferEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glFramebufferRenderbufferEXT);
}

/* glGetFramebufferAttachmentParameterivEXT */
GdkGLProc
gdk_gl_get_glGetFramebufferAttachmentParameterivEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glGetFramebufferAttachmentParameterivEXT == (GdkGLProc_glGetFramebufferAttachmentParameterivEXT) -1)
    _procs_GL_EXT_framebuffer_object.glGetFramebufferAttachmentParameterivEXT =
      (GdkGLProc_glGetFramebufferAttachmentParameterivEXT) gdk_gl_get_proc_address ("glGetFramebufferAttachmentParameterivEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glGetFramebufferAttachmentParameterivEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glGetFramebufferAttachmentParameterivEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glGetFramebufferAttachmentParameterivEXT);
}

/* glGenerateMipmapEXT */
GdkGLProc
gdk_gl_get_glGenerateMipmapEXT (void)
{
  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (_procs_GL_EXT_framebuffer_object.glGenerateMipmapEXT == (GdkGLProc_glGenerateMipmapEXT) -1)
    _procs_GL_EXT_framebuffer_object.glGenerateMipmapEXT =
      (GdkGLProc_glGenerateMipmapEXT) gdk_gl_get_proc_address ("glGenerateMipmapEXT");

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_glGenerateMipmapEXT () - %s",
               (_procs_GL_EXT_framebuffer_object.glGenerateMipmapEXT) ? "supported" : "not supported"));

  return (GdkGLProc) (_procs_GL_EXT_framebuffer_object.glGenerateMipmapEXT);
}

/* Get GL_EXT_framebuffer_object functions */
GdkGL_GL_EXT_framebuffer_object *
gdk_gl_get_GL_EXT_framebuffer_object (void)
{
  static gint supported = -1;

  if (gdk_gl_context_get_current () == NULL)
    return NULL;

  if (supported == -1)
    {
      supported = gdk_gl_query_gl_extension ("GL_EXT_framebuffer_object");

      if (supported)
        {
          supported &= (gdk_gl_get_glIsRenderbufferEXT () != NULL);
          supported &= (gdk_gl_get_glBindRenderbufferEXT () != NULL);
          supported &= (gdk_gl_get_glDeleteRenderbuffersEXT () != NULL);
          supported &= (gdk_gl_get_glGenRenderbuffersEXT () != NULL);
          supported &= (gdk_gl_get_glRenderbufferStorageEXT () != NULL);
          supported &= (gdk_gl_get_glGetRenderbufferParameterivEXT () != NULL);
          supported &= (gdk_gl_get_glIsFramebufferEXT () != NULL);
          supported &= (gdk_gl_get_glBindFramebufferEXT () != NULL);
          supported &= (gdk_gl_get_glDeleteFramebuffersEXT () != NULL);
          supported &= (gdk_gl_get_glGenFramebuffersEXT () != NULL);
          supported &= (gdk_gl_get_glCheckFramebufferStatusEXT () != NULL);
          supported &= (gdk_gl_get_glFramebufferTexture1DEXT () != NULL);
          supported &= (gdk_gl_get_glFramebufferTexture2DEXT () != NULL);
          supported &= (gdk_gl_get_glFramebufferTexture3DEXT () != NULL);
          supported &= (gdk_gl_get_glFramebufferRenderbufferEXT () != NULL);
          supported &= (gdk_gl_get_glGetFramebufferAttachmentParameterivEXT () != NULL);
          supported &= (gdk_gl_get_glGenerateMipmapEXT () != NULL);
        }
    }

  GDK_GL_NOTE (MISC,
    g_message (" - gdk_gl_get_GL_EXT_framebuffer_object () - %s",
               (supported) ? "supported" : "not supported"));

  if (!supported)
    return NULL;

  return &_procs_GL_EXT_framebuffer_object;
}