Fix font loading in sandboxed environments (VST3)

- Root cause: CGDataProviderCreateWithURL fails in macOS sandbox
- Solution: Load fonts into memory first using LoadResource
- Use LoadFont(fontID, pData, dataSize) instead of LoadFont(fontID, filename)
- Fixes SIGSEGV crash in nvgCreateFontFaceMem when running in VST3PluginTestHost

Resolves crash at nanovg.c:2307 with NULL font data pointer.

Author: damiangr

NeuralAmpModeler/NeuralAmpModeler.cpp

@@ -115,8 +115,15 @@ NeuralAmpModeler::NeuralAmpModeler(const InstanceInfo& info)
     pGraphics->EnableTooltips(true);
     pGraphics->EnableMultiTouch(true);
 
-    pGraphics->LoadFont("Roboto-Regular", ROBOTO_FN);
-    pGraphics->LoadFont("Michroma-Regular", MICHROMA_FN);
+    // Load fonts from memory to avoid CGDataProviderCreateWithURL sandbox issues
+    // See iPlug2 IGraphicsCoreText.mm line 48 comment about sandbox failures
+    WDL_TypedBuf<uint8_t> robotoData = LoadResource(ROBOTO_FN, "ttf");
+    if (robotoData.GetSize() > 0)
+      pGraphics->LoadFont("Roboto-Regular", robotoData.Get(), robotoData.GetSize());
+    
+    WDL_TypedBuf<uint8_t> michromaData = LoadResource(MICHROMA_FN, "ttf");
+    if (michromaData.GetSize() > 0)
+      pGraphics->LoadFont("Michroma-Regular", michromaData.Get(), michromaData.GetSize());
 
     const auto gearSVG = pGraphics->LoadSVG(GEAR_FN);
     const auto fileSVG = pGraphics->LoadSVG(FILE_FN);

NeuralAmpModelerPlugin

@@ -0,0 +1 @@
+Subproject commit 699719b7b948840307cf3be96eee38325325921e

clear_mac_cache.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+# Script to clear ALL NeuralAmpModeler caches on macOS
+# Run this before testing a new build to ensure clean state
+
+echo "=== Clearing NeuralAmpModeler Mac Caches ==="
+echo ""
+
+# 1. Kill audio processes
+echo "1. Killing audio processes..."
+sudo killall -9 AudioComponentRegistrar 2>/dev/null || true
+sudo killall -9 coreaudiod 2>/dev/null || true
+sudo killall -9 NeuralAmpModeler 2>/dev/null || true
+echo "   Done"
+echo ""
+
+# 2. Remove installed plugins and apps
+echo "2. Removing installed plugins and apps..."
+sudo rm -rf ~/Library/Audio/Plug-Ins/Components/NeuralAmpModeler.component
+sudo rm -rf ~/Library/Audio/Plug-Ins/VST3/NeuralAmpModeler.vst3
+sudo rm -rf ~/Library/Audio/Plug-Ins/VST/NeuralAmpModeler.vst
+sudo rm -rf /Library/Audio/Plug-Ins/Components/NeuralAmpModeler.component
+sudo rm -rf /Library/Audio/Plug-Ins/VST3/NeuralAmpModeler.vst3
+sudo rm -rf /Library/Audio/Plug-Ins/VST/NeuralAmpModeler.vst
+sudo rm -rf ~/Applications/NeuralAmpModeler.app
+sudo rm -rf /Applications/NeuralAmpModeler.app
+sudo rm -rf ~/Downloads/NeuralAmpModeler.app
+echo "   Done"
+echo ""
+
+# 3. Clear application state and preferences
+echo "3. Clearing application state and preferences..."
+rm -rf ~/Library/Saved\ Application\ State/com.StevenAtkinson.app.NeuralAmpModeler*
+rm -rf ~/Library/Preferences/com.StevenAtkinson.app.NeuralAmpModeler.plist
+defaults delete com.StevenAtkinson.app.NeuralAmpModeler 2>/dev/null || true
+echo "   Done"
+echo ""
+
+# 4. Clear system caches
+echo "4. Clearing system caches..."
+sudo rm -rf /Library/Caches/com.StevenAtkinson.app.NeuralAmpModeler*
+rm -rf ~/Library/Caches/com.StevenAtkinson.app.NeuralAmpModeler*
+sudo rm -rf /System/Library/Caches/com.apple.audio.InfoCache.plist
+echo "   Done"
+echo ""
+
+# 5. Clear audio unit cache
+echo "5. Clearing Audio Unit cache..."
+sudo rm -rf ~/Library/Caches/AudioUnitCache
+killall -9 AudioComponentRegistrar 2>/dev/null || true
+echo "   Done"
+echo ""
+
+# 6. Restart Core Audio
+echo "6. Restarting Core Audio daemon..."
+sudo launchctl kickstart -kp system/com.apple.audio.coreaudiod
+echo "   Done"
+echo ""
+
+echo "=== Cache Clear Complete ==="
+echo ""
+echo "IMPORTANT: Reboot your Mac now to ensure completely clean state:"
+echo "  sudo reboot"
+echo ""
+echo "After reboot, install the NEW binary from artifact 4461379434"

verify_build.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# Verification script to check if Layer 10B is compiled in the binary
+
+echo "=== Build Verification Script ==="
+echo ""
+echo "Current commit:"
+git log --oneline -1
+echo ""
+echo "AudioDSPTools submodule commit:"
+git submodule status AudioDSPTools
+echo ""
+echo "Layer 10B check in ImpulseResponse.cpp:"
+grep -n "Layer 10B" AudioDSPTools/dsp/ImpulseResponse.cpp || echo "WARNING: Layer 10B comment not found!"
+echo ""
+echo "Checking both constructors have initialization:"
+grep -A 2 "ImpulseResponse::ImpulseResponse" AudioDSPTools/dsp/ImpulseResponse.cpp | grep "mRawAudioSampleRate(0.0)" || echo "WARNING: Initialization missing!"
+echo ""
+echo "Expected offset: Should be different from 745664"
+echo "Previous offsets:"
+echo "  Layers 7-9: 745664 (0xB60C0)"
+echo "  Layer 10 (file constructor only): 745680 (0xB60D0)"
+echo "  Layer 10B (both constructors): Should be different again"