From 68225e4919e7bfb105d3fc5dafdd8ce536016c85 Mon Sep 17 00:00:00 2001
From: Dani Frank <danifrank@google.com>
Date: Fri, 12 May 2023 23:27:03 +0300
Subject: [PATCH] Fix simulator feature discovery

Fix depth clamp and texture swizzle feature discovery on simulator builds

Both of these features are not supported by the iphone simulator
and leads to crashes when used
---
 MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
index 2872db17e..8ad6fd876 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
@@ -1802,7 +1802,11 @@
 	if ( mvkOSVersionIsAtLeast(13.0) ) {
 		_metalFeatures.mslVersionEnum = MTLLanguageVersion2_2;
 		_metalFeatures.placementHeaps = mvkConfig().useMTLHeap;
+#if MVK_OS_SIMULATOR
+		_metalFeatures.nativeTextureSwizzle = false;
+#else
 		_metalFeatures.nativeTextureSwizzle = true;
+#endif
 		if (supportsMTLGPUFamily(Apple3)) {
 			_metalFeatures.native3DCompressedTextures = true;
 		}
@@ -2196,9 +2200,13 @@
 		_features.dualSrcBlend = true;
 	}
 
+#if MVK_OS_SIMULATOR
+	_features.depthClamp = false;
+#else
 	if (supportsMTLFeatureSet(iOS_GPUFamily2_v4)) {
 		_features.depthClamp = true;
 	}
+#endif
 
 	if (supportsMTLFeatureSet(iOS_GPUFamily3_v2)) {
 		_features.tessellationShader = true;