Fix mesa rendering outside window borders on wayland

The mesa workaround has lead to some issues with
rendering on Wayland.

To resolve this problem, the mesa workaround has been
restructured in a way which still allows clearing the screen
before rendering without killing performance with the mesa
driver. The performance is identical to the master brach
and there have been no recorded regressions.

1 files changed, 8 insertions, 7 deletions

diff --git a/src/main.rs b/src/main.rs
index 0888c9b5..03a372df 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -173,7 +173,7 @@ fn run(mut config: Config, options: &cli::Options) -> Result<(), Box<Error>> {
     // Main display loop
     loop {
         // Process input and window events
-        let mut terminal = processor.process_events(&terminal, display.window());
+        let mut terminal_lock = processor.process_events(&terminal, display.window());
 
         // Handle config reloads
         if let Some(new_config) = config_monitor
@@ -183,22 +183,23 @@ fn run(mut config: Config, options: &cli::Options) -> Result<(), Box<Error>> {
             config = new_config.update_dynamic_title(options);
             display.update_config(&config);
             processor.update_config(&config);
-            terminal.update_config(&config);
-            terminal.dirty = true;
+            terminal_lock.update_config(&config);
+            terminal_lock.dirty = true;
         }
 
         // Maybe draw the terminal
-        if terminal.needs_draw() {
+        if terminal_lock.needs_draw() {
             // Try to update the position of the input method editor
-            display.update_ime_position(&terminal);
+            display.update_ime_position(&terminal_lock);
             // Handle pending resize events
             //
             // The second argument is a list of types that want to be notified
             // of display size changes.
-            display.handle_resize(&mut terminal, &config, &mut [&mut pty, &mut processor]);
+            display.handle_resize(&mut terminal_lock, &config, &mut [&mut pty, &mut processor]);
+            drop(terminal_lock);
 
             // Draw the current state of the terminal
-            display.draw(terminal, &config);
+            display.draw(&terminal, &config);
         }
 
         // Begin shutdown if the flag was raised.