From 66922b3bd296584639d4daa494a0491cfcd5e36a Mon Sep 17 00:00:00 2001
From: Alex <dudesuchamazing@gmail.com>
Date: Thu, 14 Sep 2023 03:51:06 +0300
Subject: [PATCH] Add hacks for EGL on Wayland

---
 common/gal/opengl/opengl_gal.cpp | 15 +++++++++++++++
 common/gl_context_mgr.cpp        |  8 +++++++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/common/gal/opengl/opengl_gal.cpp b/common/gal/opengl/opengl_gal.cpp
index 1e905fdad7..b7087e59b4 100644
--- a/common/gal/opengl/opengl_gal.cpp
+++ b/common/gal/opengl/opengl_gal.cpp
@@ -2553,7 +2553,9 @@ unsigned int OPENGL_GAL::getNewGroupNumber()
 
 void OPENGL_GAL::init()
 {
+#ifndef KICAD_USE_EGL
     wxASSERT( IsShownOnScreen() );
+#endif // KICAD_USE_EGL
 
     wxASSERT_MSG( m_isContextLocked, "This should only be called from within a locked context." );
 
@@ -2562,6 +2564,19 @@ void OPENGL_GAL::init()
         throw std::runtime_error( "Could not create the tesselator" );
     GLenum err = glewInit();
 
+#ifdef KICAD_USE_EGL
+    // TODO: better way to check when EGL is ready (init fails at "getString(GL_VERSION)")
+    for( int i = 0; i < 10; i++ )
+    {
+        if( GLEW_OK == err )
+            break;
+
+        std::this_thread::sleep_for( std::chrono::milliseconds( 250 ) );
+        err = glewInit();
+    }
+
+#endif // KICAD_USE_EGL
+
     if( GLEW_OK != err )
         throw std::runtime_error( (const char*) glewGetErrorString( err ) );
 
diff --git a/common/gl_context_mgr.cpp b/common/gl_context_mgr.cpp
index 20eaa07044..5b3be3f050 100644
--- a/common/gl_context_mgr.cpp
+++ b/common/gl_context_mgr.cpp
@@ -92,8 +92,14 @@ void GL_CONTEXT_MANAGER::LockCtx( wxGLContext* aContext, wxGLCanvas* aCanvas )
 
     // Prevent assertion failure in wxGLContext::SetCurrent during GAL teardown
 #ifdef __WXGTK__
+
+#ifdef KICAD_USE_EGL
+    if( canvas->GTKGetDrawingWindow() )
+#else
     if( canvas->GetXWindow() )
-#endif
+#endif // KICAD_USE_EGL
+
+#endif // __WXGTK__
     {
         canvas->SetCurrent( *aContext );
     }