updated copyright message

[modules/gui.git] / src / OpenGLUtils / OpenGLUtils_FrameBuffer.cxx

diff --git a/src/OpenGLUtils/OpenGLUtils_FrameBuffer.cxx b/src/OpenGLUtils/OpenGLUtils_FrameBuffer.cxx
old mode 100755 (executable)
new mode 100644 (file)
index 95c68c1..663260d
--- a/src/OpenGLUtils/OpenGLUtils_FrameBuffer.cxx
+++ b/src/OpenGLUtils/OpenGLUtils_FrameBuffer.cxx
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2016  CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2023  CEA/DEN, EDF R&D, OPEN CASCADE
 //
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
@@ -20,6 +20,11 @@
 //  File   : OpenGLUtils_FrameBuffer.cxx
 //  Module : SALOME
 //
+#ifdef VTK_OPENGL2
+#define GL_GLEXT_PROTOTYPES
+#endif
+
+
 #include "OpenGLUtils_FrameBuffer.h"
 
 #include <utilities.h>
@@ -30,7 +35,27 @@
 # ifndef GLX_GLXEXT_LEGACY
 #  define GLX_GLXEXT_LEGACY
 # endif
+#ifdef __APPLE__
+#import <mach-o/dyld.h>
+#import <stdlib.h>
+#import <string.h>
+void * glXGetProcAddressARB (const GLubyte *name)
+
+{
+    NSSymbol symbol;
+    char *symbolName;
+    symbolName = (char *)malloc (strlen ((const char *)name) + 2); // 1
+    strcpy(symbolName + 1, (const char *)name); // 2
+    symbolName[0] = '_'; // 3
+    symbol = NULL;
+    if (NSIsSymbolNameDefined (symbolName)) // 4
+        symbol = NSLookupAndBindSymbol (symbolName);
+    free (symbolName); // 5
+    return symbol ? NSAddressOfSymbol (symbol) : NULL; // 6
+}
+#else
 # include <GL/glx.h>
+#endif
 # include <dlfcn.h>
 #else
 # include <wingdi.h>
@@ -128,8 +153,21 @@ OpenGLUtils_FrameBuffer::~OpenGLUtils_FrameBuffer()
 
 bool OpenGLUtils_FrameBuffer::init( const GLsizei& xSize, const GLsizei& ySize )
 {
+#if defined(VTK_OPENGL2) && ! defined(WIN32)
+  int n = 0;
+  std::ostringstream strm;
+  glGetIntegerv(GL_NUM_EXTENSIONS, &n);
+  for (int i = 0; i < n; i++)
+    {
+      const char *exti = (const char *)glGetStringi(GL_EXTENSIONS, i);
+      strm<< exti <<" ";
+    }
+  std::string s = strm.str();
+  const char* ext = s.c_str();
+#else  
   char* ext = (char*)glGetString( GL_EXTENSIONS );
-  if( !IsEXTInitialized ||
+#endif  
+  if( !IsEXTInitialized || !ext ||
       strstr( ext, "GL_EXT_framebuffer_object" ) == NULL )
   {
     MESSAGE( "Initializing OpenGL FrameBuffer extension failed" );