Merge pull request #495 from tomaka/fix-multisampling

Makes sure that the pixel format has the same multisampling settings as the requirements

src/lib.rs

@@ -398,9 +398,16 @@ impl<'a> BuilderAttribs<'a> {
                 continue;
             }
 
-            if self.multisampling.is_some() && format.multisampling.is_none() {
+            if let Some(req_ms) = self.multisampling {
+                match format.multisampling {
+                    Some(val) if val >= req_ms => (),
+                    _ => continue
+                }
+            } else {
+                if format.multisampling.is_some() {
                     continue;
                 }
+            }
 
             if let Some(srgb) = self.srgb {
                 if srgb != format.srgb {