From 9937a055e2478c1089fc97c0b8417c83ca39b211 Mon Sep 17 00:00:00 2001
From: lordhavoc <lordhavoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Tue, 14 May 2002 10:43:25 +0000
Subject: [PATCH] search for GL functions using GetProcAddress on win32 instead
 of wglGetProcAddress (which only lists extensions, apparently), fixes
 inability to find GL 1.1.0 functions in 3dfx driver (maybe NVIDIA and others,
 only tested 3dfx)

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@1830 d7cf8633-e32d-0410-b094-e92efae38249
---
 vid_shared.c | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/vid_shared.c b/vid_shared.c
index 4f004218..c0b9fba8 100644
--- a/vid_shared.c
+++ b/vid_shared.c
@@ -230,13 +230,17 @@ static gl_extensionfunctionlist_t compiledvertexarrayfuncs[] =
 #include <dlfcn.h>
 #endif
 
-#ifndef WIN32
+#ifdef WIN32
+static HINSTANCE gldll;
+#else
 static void *prjobj = NULL;
 #endif
 
 static void gl_getfuncs_begin(void)
 {
-#ifndef WIN32
+#ifdef WIN32
+	gldll = LoadLibrary("opengl32.dll");
+#else
 	if (prjobj)
 		dlclose(prjobj);
 
@@ -251,19 +255,20 @@ static void gl_getfuncs_begin(void)
 
 static void gl_getfuncs_end(void)
 {
-#ifndef WIN32
+#ifdef WIN32
+	FreeLibrary(gldll);
+#else
 	if (prjobj)
-	{
 		dlclose(prjobj);
-		prjobj = NULL;
-	}
+	prjobj = NULL;
 #endif
 }
 
 static void *gl_getfuncaddress(char *name)
 {
 #ifdef WIN32
-	return (void *) wglGetProcAddress(name);
+//	return (void *) wglGetProcAddress(name);
+	return (void *) GetProcAddress(gldll, name);
 #else
 	return (void *) dlsym(prjobj, name);
 #endif
@@ -271,6 +276,7 @@ static void *gl_getfuncaddress(char *name)
 
 static int gl_checkextension(char *name, gl_extensionfunctionlist_t *funcs, char *disableparm)
 {
+	int failed = false;
 	gl_extensionfunctionlist_t *func;
 
 	Con_Printf("checking for %s...  ", name);
@@ -291,9 +297,12 @@ static int gl_checkextension(char *name, gl_extensionfunctionlist_t *funcs, char
 			if (!(*func->funcvariable = (void *) gl_getfuncaddress(func->name)))
 			{
 				Con_Printf("missing function \"%s\"!\n", func->name);
-				return false;
+				failed = true;
 			}
 		}
+		// delay the return so it prints all missing functions
+		if (failed)
+			return false;
 		Con_Printf("enabled\n");
 		return true;
 	}
-- 
2.39.2