From 9edbd5794767fd1f2ce6d40f30d36345f36bba14 Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Mon, 22 Apr 2024 14:11:01 -0500
Subject: [PATCH] GUI: disable late render clear on Metal

fixes a crash
---
 src/gui/gui.cpp      |  4 ++--
 src/gui/settings.cpp | 16 +++++++++-------
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 0e1a80ec5..5dc3c221c 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -6455,7 +6455,7 @@ bool FurnaceGUI::loop() {
       }
     }
 
-    if (!settings.renderClearPos) {
+    if (!settings.renderClearPos || renderBackend==GUI_BACKEND_METAL) {
       rend->clear(uiColors[GUI_COLOR_BACKGROUND]);
     }
     renderTimeBegin=SDL_GetPerformanceCounter();
@@ -6496,7 +6496,7 @@ bool FurnaceGUI::loop() {
       }
     }
     rend->present();
-    if (settings.renderClearPos) {
+    if (settings.renderClearPos && renderBackend!=GUI_BACKEND_METAL) {
       rend->clear(uiColors[GUI_COLOR_BACKGROUND]);
     }
     swapTimeEnd=SDL_GetPerformanceCounter();
diff --git a/src/gui/settings.cpp b/src/gui/settings.cpp
index ce42eb675..18edb2c22 100644
--- a/src/gui/settings.cpp
+++ b/src/gui/settings.cpp
@@ -488,13 +488,15 @@ void FurnaceGUI::drawSettings() {
           settingsChanged=true;
         }
 
-        bool renderClearPosB=settings.renderClearPos;
-        if (ImGui::Checkbox("Late render clear",&renderClearPosB)) {
-          settings.renderClearPos=renderClearPosB;
-          settingsChanged=true;
-        }
-        if (ImGui::IsItemHovered()) {
-          ImGui::SetTooltip("calls rend->clear() after rend->present(). might reduce UI latency by one frame in some drivers.");
+        if (settings.renderBackend!=GUI_BACKEND_METAL) {
+          bool renderClearPosB=settings.renderClearPos;
+          if (ImGui::Checkbox("Late render clear",&renderClearPosB)) {
+            settings.renderClearPos=renderClearPosB;
+            settingsChanged=true;
+          }
+          if (ImGui::IsItemHovered()) {
+            ImGui::SetTooltip("calls rend->clear() after rend->present(). might reduce UI latency by one frame in some drivers.");
+          }
         }
 
         bool powerSaveB=settings.powerSave;