diff --git a/src/dlangui/graphics/glsupport.d b/src/dlangui/graphics/glsupport.d
index c43d596a..957f486a 100644
--- a/src/dlangui/graphics/glsupport.d
+++ b/src/dlangui/graphics/glsupport.d
@@ -125,8 +125,9 @@ class GLProgram {
     private char[] glslversionString;
 
     private void compatibilityFixes(ref char[] code, GLuint type) {
-        if (glslversionInt < 150) {
+        if (glslversionInt < 150)
             code = replace(code, " texture(", " texture2D(");
+        if (glslversionInt < 140) {
             if(type == GL_VERTEX_SHADER)
             {
                 code = replace(code, "in ", "attribute ");
@@ -134,6 +135,8 @@ class GLProgram {
             } else
             {
                 code = replace(code, "in ", "varying ");
+                code = replace(code, "out vec4 outColor;", "");
+                code = replace(code, "outColor", "gl_FragColor");
             }
         }
     }
diff --git a/src/dlangui/platforms/common/platform.d b/src/dlangui/platforms/common/platform.d
index 128790fa..5f2885fd 100644
--- a/src/dlangui/platforms/common/platform.d
+++ b/src/dlangui/platforms/common/platform.d
@@ -1253,6 +1253,19 @@ class Platform {
      * Window w/o Resizable nor Fullscreen will be created with size based on measurement of its content widget
      */
     abstract Window createWindow(dstring windowCaption, Window parent, uint flags = WindowFlag.Resizable, uint width = 0, uint height = 0);
+
+    static if (ENABLE_OPENGL) {
+        /**
+         * OpenGL context major version.
+         * Note: if the version is invalid or not supported, this value will be set to supported one.
+         */
+        int GLVersionMajor = 3;
+        /**
+         * OpenGL context minor version.
+         * Note: if the version is invalid or not supported, this value will be set to supported one.
+         */
+        int GLVersionMinor = 2;
+    }
     /**
      * close window
      * 
diff --git a/src/dlangui/platforms/sdl/sdlapp.d b/src/dlangui/platforms/sdl/sdlapp.d
index 1637997d..035c8751 100644
--- a/src/dlangui/platforms/sdl/sdlapp.d
+++ b/src/dlangui/platforms/sdl/sdlapp.d
@@ -127,8 +127,11 @@ class SDLWindow : Window {
             _context = SDL_GL_CreateContext(_win); // Create the actual context and make it current
             if (!_context)
                 Log.e("SDL_GL_CreateContext failed: ", fromStringz(SDL_GetError()));
-            else
+            else {
                 Log.i("Created successfully");
+                _platform.GLVersionMajor = versionMajor;
+                _platform.GLVersionMinor = versionMinor;
+            }
             return _context !is null;
         }
     }
@@ -176,21 +179,24 @@ class SDLWindow : Window {
         
         static if (ENABLE_OPENGL) {
             if (_enableOpengl) {
-                createContext(3, 2);
-                if (!_context) {
-                    Log.e("SDL_GL_CreateContext failed: ", fromStringz(SDL_GetError()));
+                bool success = createContext(_platform.GLVersionMajor, _platform.GLVersionMinor);
+                if (!success) {
                     Log.w("trying other versions of OpenGL");
-                    bool flg = false;
-                    flg = flg || createContext(3, 3);
-                    flg = flg || createContext(3, 1);
-                    flg = flg || createContext(4, 0);
-                    flg = flg || createContext(2, 1);
-                    if (!flg) {
+                    // Lazy conditions.
+                    if(_platform.GLVersionMajor >= 4)
+                        success = success || createContext(4, 0);
+                    success = success || createContext(3, 3);
+                    success = success || createContext(3, 2);
+                    success = success || createContext(3, 1);
+                    success = success || createContext(2, 1);
+                    if (!success) {
                         _enableOpengl = false;
+                        _platform.GLVersionMajor = 0;
+                        _platform.GLVersionMinor = 0;
                         Log.w("OpenGL support is disabled");
                     }
                 }
-                if (_context && !_glSupport) {
+                if (success && !_glSupport) {
                     _enableOpengl = initGLSupport(false);
                     fixSize();
                 }
diff --git a/src/dlangui/platforms/x11/x11app.d b/src/dlangui/platforms/x11/x11app.d
index 4f987046..b5c3ff8b 100644
--- a/src/dlangui/platforms/x11/x11app.d
+++ b/src/dlangui/platforms/x11/x11app.d
@@ -220,7 +220,7 @@ class X11Window : DWindow {
 					swamask |= CWColormap;
 					swa.colormap = x11cmap;
 					visual = cast(Visual*)x11visual.visual;
-                    depth = x11visutal.depth;
+                    depth = x11visual.depth;
 				}
 			}