From 7877780b10e6c554680426a7e0dd8f7d2ae020dc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=87a=C4=9Fan=20=C3=96zcan?=
 <caganozcan@Cagans-MacBook-Pro.local>
Date: Sun, 20 Sep 2026 19:46:56 +0300
Subject: [PATCH] fix: guard macOS-only MTLDevice selectors for iOS

MTLDevice location and recommendedMaxWorkingSetSize are unavailable on
iOS and crash with unrecognized selector (verified on iPhone 16 Pro /
A18 Pro). iOS devices are always integrated and share system memory, so
report INTEGRATED and use ProcessInfo physicalMemory instead.
---
 plume_metal.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/plume_metal.cpp b/plume_metal.cpp
index 373c87e..7fd29b7 100644
--- a/plume_metal.cpp
+++ b/plume_metal.cpp
@@ -3796,10 +3796,20 @@ namespace plume {
 
         const std::string deviceName(mtl->name()->utf8String());
         description.name = deviceName;
+#if TARGET_OS_IPHONE
+        // MTLDevice location and recommendedMaxWorkingSetSize are macOS-only selectors;
+        // iOS devices are always integrated and share system memory.
+        description.type = RenderDeviceType::INTEGRATED;
+#else
         description.type = mapDeviceType(mtl->location());
+#endif
         description.driverVersion = 1; // Unavailable
         description.vendor = mtl->supportsFamily(MTL::GPUFamilyApple1) ? RenderDeviceVendor::APPLE : getRenderDeviceVendor(mtl->registryID());
+#if TARGET_OS_IPHONE
+        description.dedicatedVideoMemory = NS::ProcessInfo::processInfo()->physicalMemory();
+#else
         description.dedicatedVideoMemory = mtl->recommendedMaxWorkingSetSize();
+#endif
 
         timestampCounterSet = findTimestampCounterSet();
         if (timestampCounterSet != nullptr) {
@@ -3823,7 +3833,11 @@ namespace plume {
         capabilities.resolveModes = false;
         capabilities.scalarBlockLayout = true;
         capabilities.presentWait = true;
+#if TARGET_OS_IPHONE
+        capabilities.preferHDR = NS::ProcessInfo::processInfo()->physicalMemory() > (512 * 1024 * 1024);
+#else
         capabilities.preferHDR = mtl->recommendedMaxWorkingSetSize() > (512 * 1024 * 1024);
+#endif
         capabilities.dynamicDepthBias = true;
         capabilities.uma = mtl->hasUnifiedMemory();
         capabilities.gpuUploadHeap = capabilities.uma;