Add files necessary to run Expat configure.

[wxWidgets.git] / interface / wx / glcanvas.h

diff --git a/interface/wx/glcanvas.h b/interface/wx/glcanvas.h
index a1cba0957a74017b9ad6b8a236a06697ec503a62..49a38c958e6fbf110b96c892e9e4885b2bd0f4f0 100644 (file)
--- a/interface/wx/glcanvas.h
+++ b/interface/wx/glcanvas.h
@@ -3,7 +3,7 @@
 // Purpose:     interface of wxGLContext and wxGLCanvas
 // Author:      wxWidgets team
 // RCS-ID:      $Id$
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 /**
@@ -32,6 +32,9 @@
     best to check your native platform's glcanvas header (on windows
     include/wx/msw/glcanvas.h) to see what features your native platform
     provides.
+    
+    wxHAS_OPENGL_ES is defined on platforms that only have this implementation
+    available (eg the iPhone) und don't support the full specification.
 
     @library{wxgl}
     @category{gl}
@@ -82,7 +85,8 @@ public:
  */
 enum
 {
-    /// Use true color palette (on if no attributes at all specified).
+    /// Use true color (the default if no attributes at all are specified);
+    /// do not use a palette.
     WX_GL_RGBA = 1,
 
     /// Specifies the number of bits for buffer if not WX_GL_RGBA.
@@ -133,7 +137,7 @@ enum
     /// 1 for multisampling support (antialiasing)
     WX_GL_SAMPLE_BUFFERS,
 
-    /// 4 for 2x2 antialising supersampling on most graphics cards
+    /// 4 for 2x2 antialiasing supersampling on most graphics cards
     WX_GL_SAMPLES
 
 };
@@ -211,7 +215,7 @@ public:
             constants. If a constant should be followed by a value, put it in
             the next array position. For example, WX_GL_DEPTH_SIZE should be
             followed by the value that indicates the number of bits for the
-            depth buffer, e.g:
+            depth buffer, e.g.:
             @code
             attribList[n++] = WX_GL_DEPTH_SIZE;
             attribList[n++] = 32;
@@ -242,7 +246,17 @@ public:
 
         @return @true if attributes are supported.
     */
-    static bool IsDisplaySupported(const int* attribList = NULL);
+    static bool IsDisplaySupported(const int* attribList);
+
+    /**
+        Returns true if the extension with given name is supported
+
+        Notice that while this function is implemented for all of GLX, WGL and
+        AGL the extensions names are usually not the same for different
+        platforms and so the code using it still usually uses conditional
+        compilation.
+    */
+    static bool IsExtensionSupported(const char *extension);
 
     /**
         Sets the current colour for this window (using @c glcolor3f()), using