more logging to investigate crash on dmd x86_64 release build

dlanguilib.visualdproj

@@ -72,7 +72,7 @@
   <debuglevel>0</debuglevel>
   <debugids>DebugFocus FontResources</debugids>
   <versionlevel>0</versionlevel>
-  <versionids>EmbedStandardResources Unicode USE_FREETYPE USE_OPENGL USE_SDL</versionids>
+  <versionids>EmbedStandardResources Unicode USE_FREETYPE USE_OPENGL</versionids>
   <dump_source>0</dump_source>
   <mapverbosity>0</mapverbosity>
   <createImplib>1</createImplib>

examples/example1/example1.visualdproj

@@ -173,7 +173,7 @@
   <debuglevel>0</debuglevel>
   <debugids />
   <versionlevel>0</versionlevel>
-  <versionids>Unicode  USE_FREETYPE USE_SDL</versionids>
+  <versionids>Unicode  USE_FREETYPE</versionids>
   <dump_source>0</dump_source>
   <mapverbosity>0</mapverbosity>
   <createImplib>0</createImplib>

examples/example1/src/example1.d

@@ -187,6 +187,10 @@ enum : int {
 
 /// entry point for dlangui based application
 extern (C) int UIAppMain(string[] args) {
+
+    // always use trace, even for release builds
+    Log.setLogLevel(LogLevel.Trace);
+
     // resource directory search paths
     // not required if only embedded resources are used
     //string[] resourceDirs = [

src/dlangui/graphics/glsupport.d

@@ -164,14 +164,21 @@ class GLProgram {
         Log.d("Program compiled successfully");
         //glDetachShader(program, vertexShader);
         //glDetachShader(program, fragmentShader);
+        Log.v("trying glUseProgram(0)");
+        glUseProgram(0);
+        Log.v("before useProgram");
         glUseProgram(program);
         checkError("glUseProgram " ~ to!string(program));
+        Log.v("after useProgram");
         if (!initLocations()) {
             Log.e("some of locations were not found");
             error = true;
         }
         initialized = true;
-        return true;
+        Log.v("Program is initialized successfully");
+        glUseProgram(0);
+        checkError("glUseProgram " ~ to!string(program));
+        return !error;
     }
     bool initLocations() {
         return true;
@@ -605,27 +612,34 @@ class GLSupport {
     }
 
     bool initShaders() {
+        if (_solidFillProgram is null) {
+            Log.v("Compiling solid fill program");
+            _solidFillProgram = new SolidFillProgram();
+            if (!_solidFillProgram.compile())
+                return false;
+        }
         if (_textureProgram is null) {
+            Log.v("Compiling texture program");
             _textureProgram = new TextureProgram();
             if (!_textureProgram.compile())
                 return false;
         }
         if (_fontProgram is null) {
+            Log.v("Compiling font program");
             _fontProgram = new FontProgram();
             if (!_fontProgram.compile())
                 return false;
         }
-        if (_solidFillProgram is null) {
-            _solidFillProgram = new SolidFillProgram();
-            if (!_solidFillProgram.compile())
-                return false;
-        }
         Log.d("Shaders compiled successfully");
         return true;
     }
 
     bool uninitShaders() {
         Log.d("Uniniting shaders");
+        if (_solidFillProgram !is null) {
+            destroy(_solidFillProgram);
+		    _solidFillProgram = null;
+        }
         if (_textureProgram !is null) {
             destroy(_textureProgram);
 		    _textureProgram = null;
@@ -634,10 +648,6 @@ class GLSupport {
             destroy(_fontProgram);
 		    _fontProgram = null;
         }
-        if (_solidFillProgram !is null) {
-            destroy(_solidFillProgram);
-		    _solidFillProgram = null;
-        }
         return true;
     }
 

src/dlangui/platforms/windows/winapp.d

@@ -222,14 +222,20 @@ class Win32Window : Window {
 
                                 version (USE_OPENGL) {
                                     //_gl = new GLSupport();
-                                    if (!_glSupport)
+                                    if (!_glSupport) {
+                                        Log.v("Creating OpenGL support");
                                         _glSupport = new GLSupport();
+                                        Log.v("OpenGL support created");
+                                    }
                                 }
 
                                 // successful
+                                Log.v("initializing shaders");
                                 if (glSupport.valid || glSupport.initShaders()) {
+                                    Log.v("shaders are ok");
                                     setOpenglEnabled();
                                     useOpengl = true;
+                                    Log.v("OpenGL is initialized ok");
                                 } else {
                                     Log.e("Failed to compile shaders");
                                 }
@@ -773,10 +779,12 @@ class Win32Platform : Platform {
     private Win32Window[ulong] _windowMap;
     /// add window to window map
     void onWindowCreated(HWND hwnd, Win32Window window) {
+        Log.v("created window, adding to map");
         _windowMap[cast(ulong)hwnd] = window;
     }
     /// remove window from window map, returns true if there are some more windows left in map
     bool onWindowDestroyed(HWND hwnd, Win32Window window) {
+        Log.v("destroyed window, removing from map");
         Win32Window wnd = getWindow(hwnd);
         if (wnd) {
             _windowMap.remove(cast(ulong)hwnd);