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--- samples/SampleRawApplication/SampleRawMain.cpp.orig Sat Dec 20 17:28:54 2003
+++ samples/SampleRawApplication/SampleRawMain.cpp Thu Sep 2 21:44:58 2004
@@ -28,6 +28,12 @@
#include <SDL.h>
#include "Elevations.h"
+#ifndef _WIN32
+#include <dlfcn.h>
+#undef GLX_GLXEXT_LEGACY
+#include <GL/glx.h>
+#endif
+
using namespace Demeter;
using namespace std;
@@ -37,6 +43,7 @@
#else
typedef void (*PFNGLFOGCOORDPOINTERFARBPROC) (GLenum type,GLint stride,const GLvoid* pointer);
#endif
+PFNGLXGETPROCADDRESSARBPROC glXGetProcAddressARB_ptr = NULL;
PFNGLFOGCOORDPOINTERFARBPROC FogCoordPointerEXT = NULL;
#ifndef FOG_COORDINATE_ARRAY_EXT
#define FOG_COORDINATE_ARRAY_EXT 0x8457
@@ -193,7 +200,22 @@
#ifdef _WIN32
FogCoordPointerEXT = (PFNGLFOGCOORDPOINTERFARBPROC) wglGetProcAddress("glFogCoordPointerEXT");
#else
- FogCoordPointerEXT = glFogCoordPointerEXT;
+ void* h;
+
+ if ((h = dlopen(NULL, RTLD_LAZY)) == NULL) {
+ string msg("Unable to find symbol list for the main program.");
+ throw new DemeterException(msg);
+ }
+
+ glXGetProcAddressARB_ptr = (PFNGLXGETPROCADDRESSARBPROC) dlsym(h, "glXGetProcAddressARB");
+ if (glXGetProcAddressARB_ptr == NULL) {
+ string msg("Unable to find symbol \"glXGetProcAddressARB\".");
+ throw new DemeterException(msg);
+ }
+
+ FogCoordPointerEXT = (PFNGLFOGCOORDPOINTERFARBPROC) glXGetProcAddressARB_ptr((GLubyte*)"glFogCoordPointerEXT");
+
+ dlclose(h);
#endif
if (FogCoordPointerEXT != NULL)
{
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