Re: [hugin-ptx] Build issues for Hugin on macOS (Apple Silicon)

['T. Modes' via hugin and other free panoramic software]

Hi Guillaume,

Guillaume DIDIER schrieb am Freitag, 21. November 2025 um 10:56:16 UTC+1:

The good news is that I have successfully compiled a Hugin.app standalone 
bundle for Apple Silicon macOS Tahoe & Sequoia.

Good to hear. 


The first one is that in MainFrame::MainFrame, the call to 
GetDPIScaleFactor() triggers a null pointer dereference 
in wxWindow::GetContentScaleFactor 
(/wxWidgets-3.3.1/src/osx/window_osx.cpp:1188).

(This could either be caused by wxWindowMac::GetPeer (window_osx.cpp:278 
in wxWidgets-3.3.1) returning nullptr, OR an issue 
in wxWidgetCocoaImpl::GetContentScaleFactor (wxWidgets-3.3.1/src/osx/cocoa/
window.mm:2840)

With your description I tried to fix it. Please test if the attached patch 
fixes the issue.
 

Once I replace this call with returning the 1.5 DPI scale factor that 
Retina display is supposed to use, I get the splash screen to appear, but 
get an error message about missing SVG assets. (The 1.5 factor might be 
wrong though).

The svg files should be installed from 
src/hugin1/hugin/xrc/data/CMakeLists.txt, lines 2 and 3 
Is there a filename mentioned? Which svg files is missing?

Thomas

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diff -r 056053dc1de5 src/hugin1/hugin/MainFrame.cpp
--- a/src/hugin1/hugin/MainFrame.cpp	Wed Nov 19 11:16:09 2025 +0100
+++ b/src/hugin1/hugin/MainFrame.cpp	Fri Nov 21 16:52:53 2025 +0100
@@ -94,6 +94,7 @@
     {
         SetExtraStyle(GetExtraStyle() | wxWS_EX_TRANSIENT);
         wxSizer* topSizer=new wxBoxSizer(wxVERTICAL);
+        bitmap.SetScaleFactor(GetDPIScaleFactor());
         wxStaticBitmap* staticBitmap=new wxStaticBitmap(this,wxID_ANY,bitmap);
         topSizer->Add(staticBitmap,1,wxEXPAND);
         SetSizerAndFit(topSizer);
@@ -297,7 +298,6 @@
             dc.DrawText(version, bitmap.GetWidth() - tw - 3, bitmap.GetHeight() - th - 3);
             dc.SelectObject(wxNullBitmap);
         }
-        bitmap.SetScaleFactor(GetDPIScaleFactor());
         splash = new HuginSplashScreen(NULL, bitmap);
     } else {
         wxLogFatalError(_("Fatal installation error\nThe file data/splash.png was not found at:") + huginApp::Get()->GetXRCPath());