From 6bc91a025cd61c4f3cc9eb89a2b9365b3252af68 Mon Sep 17 00:00:00 2001
From: Sasha Szpakowski <slime73@gmail.com>
Date: Mon, 8 Apr 2024 20:11:47 -0300
Subject: [PATCH] metal: fix backbuffer discarding its contents in some
 situations.

fixes #1975.
---
 src/modules/graphics/metal/Graphics.mm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/modules/graphics/metal/Graphics.mm b/src/modules/graphics/metal/Graphics.mm
index 6fbe01a69..0c2380073 100644
--- a/src/modules/graphics/metal/Graphics.mm
+++ b/src/modules/graphics/metal/Graphics.mm
@@ -1459,10 +1459,15 @@ void Graphics::setRenderTargetsInternal(const RenderTargets &rts, int /*pixelw*/
 	}
 
 	for (size_t i = rts.colors.size(); i < MAX_COLOR_RENDER_TARGETS; i++)
+	{
 		passDesc.colorAttachments[i] = nil;
+		passDesc.colorAttachments[i].loadAction = MTLLoadActionLoad;
+	}
 
 	passDesc.depthAttachment = nil;
+	passDesc.depthAttachment.loadAction = MTLLoadActionLoad;
 	passDesc.stencilAttachment = nil;
+	passDesc.stencilAttachment.loadAction = MTLLoadActionLoad;
 
 	auto ds = rts.depthStencil.texture;
 	if (isbackbuffer && ds == nullptr)