diff --git a/modules/game_shaders/map.frag b/modules/game_shaders/map.frag
index 233d6903..f407109c 100644
--- a/modules/game_shaders/map.frag
+++ b/modules/game_shaders/map.frag
@@ -4,25 +4,7 @@ uniform float time; // time in seconds since shader linkage
 uniform sampler2D texture; // map texture
 varying vec2 textureCoords; // map texture coords
 
-/*
 void main()
 {
     gl_FragColor = texture2D(texture, textureCoords) * color * opacity;
 }
-*/
-void main()
-{
-   vec4 sum = vec4(0);
-   vec2 texcoord = textureCoords;
-   int j;
-   int i;
-
-   for( i= -4 ;i < 4; i++)
-   {
-        for (j = -4; j < 4; j++)
-        {
-            sum += texture2D(texture, texcoord + vec2(j, i)*0.0005) * 0.008;
-        }
-   }
-   gl_FragColor = texture2D(texture, textureCoords) * color * opacity + sum;
-}
diff --git a/src/framework/graphics/graphics.cpp b/src/framework/graphics/graphics.cpp
index 671c9d48..f8750aa8 100644
--- a/src/framework/graphics/graphics.cpp
+++ b/src/framework/graphics/graphics.cpp
@@ -115,7 +115,7 @@ void Graphics::endRender()
 {
     // this is a simple blur effect
     static Timer timer;
-    if(timer.ticksElapsed() >= 15) {
+    if(timer.ticksElapsed() >= 10) {
         glAccum(GL_MULT, 0.8);
         glAccum(GL_ACCUM, 0.2);
         timer.restart();
diff --git a/src/framework/platform/win32window.cpp b/src/framework/platform/win32window.cpp
index 7ca1f5b6..e8f143d1 100644
--- a/src/framework/platform/win32window.cpp
+++ b/src/framework/platform/win32window.cpp
@@ -306,7 +306,7 @@ void WIN32Window::internalChooseGLVisual()
                                          0,                          // No Alpha Buffer
                                          0,                          // Shift Bit Ignored
                                          0,                          // No Accumulation Buffer
-                                         0, 0, 0, 0,                 // Accumulation Bits Ignored
+                                         8, 8, 8, 8,                 // Accumulation Bits Ignored
                                          16,                         // 16Bit Z-Buffer (Depth Buffer)
                                          1,                          // 1Bit Stencil Buffer
                                          0,                          // No Auxiliary Buffer
diff --git a/src/framework/platform/x11window.cpp b/src/framework/platform/x11window.cpp
index 2ffa253a..c5654958 100644
--- a/src/framework/platform/x11window.cpp
+++ b/src/framework/platform/x11window.cpp
@@ -367,6 +367,7 @@ void X11Window::internalChooseGLVisual()
         GLX_USE_GL,
         GLX_RGBA,
         GLX_DOUBLEBUFFER,
+        GLX_STENCIL_SIZE, 1,
         GLX_ACCUM_RED_SIZE, 8,
         GLX_ACCUM_GREEN_SIZE, 8,
         GLX_ACCUM_BLUE_SIZE, 8,