Add wr-debug option.

components/servo/lib.rs

@@ -150,6 +150,7 @@ impl<Window> Browser<Window> where Window: WindowMethods + 'static {
                         enable_aa: opts.enable_text_antialiasing,
                         enable_msaa: opts.use_msaa,
                         enable_profiler: opts.webrender_stats,
+                        debug: opts.webrender_debug,
                     });
                 (Some(webrender), Some(webrender_sender))
             } else {

components/util/opts.rs

@@ -191,6 +191,9 @@ pub struct Opts {
     /// True to show webrender profiling stats on screen.
     pub webrender_stats: bool,
 
+    /// True to show webrender debug on screen.
+    pub webrender_debug: bool,
+
     /// True if WebRender should use multisample antialiasing.
     pub use_msaa: bool,
 
@@ -289,6 +292,9 @@ pub struct DebugOptions {
     /// Show webrender profiling stats on screen.
     pub webrender_stats: bool,
 
+    /// Show webrender debug on screen.
+    pub webrender_debug: bool,
+
     /// Use multisample antialiasing in WebRender.
     pub use_msaa: bool,
 
@@ -328,6 +334,7 @@ impl DebugOptions {
                 "load-webfonts-synchronously" => debug_options.load_webfonts_synchronously = true,
                 "disable-vsync" => debug_options.disable_vsync = true,
                 "wr-stats" => debug_options.webrender_stats = true,
+                "wr-debug" => debug_options.webrender_debug = true,
                 "msaa" => debug_options.use_msaa = true,
                 "full-backtraces" => debug_options.full_backtraces = true,
                 "" => {},
@@ -377,6 +384,7 @@ pub fn print_debug_usage(app: &str) -> ! {
     print_option("wr-stats", "Show WebRender profiler on screen.");
     print_option("msaa", "Use multisample antialiasing in WebRender.");
     print_option("full-backtraces", "Print full backtraces for all errors");
+    print_option("wr-debug", "Display webrender tile borders. Must be used with -w option.");
 
     println!("");
 
@@ -511,6 +519,7 @@ pub fn default_opts() -> Opts {
         config_dir: None,
         full_backtraces: false,
         is_printing_version: false,
+        webrender_debug: false,
     }
 }
 
@@ -570,7 +579,6 @@ pub fn from_cmdline_args(args: &[String]) -> ArgumentParsingResult {
                     "config directory following xdg spec on linux platform", "");
     opts.optflag("v", "version", "Display servo version information");
 
-
     let opt_match = match opts.parse(args) {
         Ok(m) => m,
         Err(f) => args_fail(&f.to_string()),
@@ -815,6 +823,7 @@ pub fn from_cmdline_args(args: &[String]) -> ArgumentParsingResult {
         config_dir: opt_match.opt_str("config-dir"),
         full_backtraces: debug_options.full_backtraces,
         is_printing_version: is_printing_version,
+        webrender_debug: debug_options.webrender_debug,
     };
 
     set_defaults(opts);