From b647cd35f13f456419ad2a94e3897dd10f2a34e8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Capucho?= <jcapucho7@gmail.com>
Date: Fri, 4 Jun 2021 22:05:47 +0100
Subject: [PATCH] Don't draw when window size is minimized

---
 voxygen/src/render/renderer.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/voxygen/src/render/renderer.rs b/voxygen/src/render/renderer.rs
index d660154c0c..6870c32e42 100644
--- a/voxygen/src/render/renderer.rs
+++ b/voxygen/src/render/renderer.rs
@@ -135,6 +135,10 @@ pub struct Renderer {
     profiler: wgpu_profiler::GpuProfiler,
     profile_times: Vec<wgpu_profiler::GpuTimerScopeResult>,
     profiler_features_enabled: bool,
+
+    // This checks is added because windows resizes the window to 0,0 when
+    // minimizing and this causes a bunch of validation errors
+    is_minimized: bool,
 }
 
 impl Renderer {
@@ -391,6 +395,8 @@ impl Renderer {
             profiler,
             profile_times: Vec::new(),
             profiler_features_enabled,
+
+            is_minimized: false,
         })
     }
 
@@ -481,6 +487,7 @@ impl Renderer {
     pub fn on_resize(&mut self, dims: Vec2<u32>) -> Result<(), RenderError> {
         // Avoid panics when creating texture with w,h of 0,0.
         if dims.x != 0 && dims.y != 0 {
+            self.is_minimized = false;
             // Resize swap chain
             self.resolution = dims;
             self.sc_desc.width = dims.x;
@@ -547,6 +554,8 @@ impl Renderer {
                     },
                 }
             }
+        } else {
+            self.is_minimized = true;
         }
 
         Ok(())
@@ -723,6 +732,10 @@ impl Renderer {
             "Renderer::start_recording_frame"
         );
 
+        if self.is_minimized {
+            return Ok(None);
+        }
+
         // Try to get the latest profiling results
         if self.mode.profiler_enabled {
             // Note: this lags a few frames behind