--- shader_8.frag	2011-06-12 09:18:33.884583051 +0300
+++ testa	2011-06-12 09:17:21.100574125 +0300
@@ -8,10 +8,10 @@
     vec2 tc = gl_TexCoord[0].xy;
     vec4 total = vec4(0.0, 0.0, 0.0, 0.0);
     for(int i = -kernel_size; i < kernel_size; ++i) {
-        total += texture2D(texScreen, vec2(tc.x + (i * ratio), tc.y));
+        total += texture2D(texScreen, vec2(tc.x + (float(i) * ratio), tc.y));
     }
 
-    total.rgb /= (kernel_size * 2);
+    total.rgb /= float(kernel_size * 2);
 
     gl_FragColor = total;
 }