fix 1 and 2 gl clamp edge, file system - windows bugs

Author: lucianpar

source/gui/imgui/src/App.cpp

@@ -7,6 +7,13 @@
 #include <al/io/al_AudioIO.hpp>
 
 #include <GLFW/glfw3.h>
+
+// GL_CLAMP_TO_EDGE is OpenGL 1.2+. Windows <GL/gl.h> only provides 1.1.
+// Define the value here if the header hasn't supplied it.
+#ifndef GL_CLAMP_TO_EDGE
+#  define GL_CLAMP_TO_EDGE 0x812F
+#endif
+
 #include "miniLogo_data.h"
 #include "stb_image.h"
 

source/gui/imgui/src/FileDialog.cpp

@@ -59,7 +59,7 @@ std::string pickFileOrDirectory(const std::string& title) {
     pDialog->SetTitle(titleW);
     DWORD opts = 0;
     pDialog->GetOptions(&opts);
-    pDialog->SetOptions(opts | FOS_PICKFOLDERS | FOS_ALLFILESYSTEMED);
+    pDialog->SetOptions(opts | FOS_PICKFOLDERS | FOS_FORCEFILESYSTEM);
 
     if (pDialog->Show(nullptr) == S_OK) {
         IShellItem* pItem = nullptr;