Switching to OpenGL using shaders backend on the fly (changed keyboard shortcuts: different backends are available using Alt+F9..F12).

common/drawpanel_gal.cpp

@@ -58,7 +58,7 @@ EDA_DRAW_PANEL_GAL::EDA_DRAW_PANEL_GAL( wxWindow* aParentWindow, wxWindowID aWin
     wxStandardPaths paths;
     wxFileName executableFile( paths.GetExecutablePath() );
     m_galShaderPath = std::string( ( executableFile.GetPath() +
-                                   wxT( "/../../common/gal/opengl/" ) ).mb_str() );
+                                   wxT( "/../../common/gal/opengl" ) ).mb_str() );
 
     SwitchBackend( aGalType, true );
     SetBackgroundStyle( wxBG_STYLE_CUSTOM );
@@ -151,7 +151,11 @@ void EDA_DRAW_PANEL_GAL::Refresh( bool eraseBackground, const wxRect* rect )
 
 void EDA_DRAW_PANEL_GAL::SwitchBackend( GalType aGalType, bool aUseShaders )
 {
-    if( aGalType == m_currentGal && m_gal != NULL )
+    wxLogDebug( wxT( "EDA_DRAW_PANEL_GAL::SwitchBackend: using shaders: %s" ),
+            aUseShaders ? "true" : "false" );
+
+    // Do not do anything if the currently used GAL is correct
+    if( aGalType == m_currentGal && aUseShaders == m_useShaders && m_gal != NULL )
         return;
 
     if( m_gal )
@@ -186,4 +190,5 @@ void EDA_DRAW_PANEL_GAL::SwitchBackend( GalType aGalType, bool aUseShaders )
     m_gal->ResizeScreen( size.GetX(), size.GetY() );
 
     m_currentGal = aGalType;
+    m_useShaders = aUseShaders;
 }

include/class_drawpanel_gal.h

@@ -88,6 +88,7 @@ protected:
                                                  ///< using GAL
     KiGfx::WX_VIEW_CONTROLS* m_viewControls;     ///< Control for VIEW (moving, zooming, etc.)
     GalType                  m_currentGal;       ///< Currently used GAL
+    bool                     m_useShaders;       ///< Are shaders used? (only for OpenGL GAL)
 
     std::string              m_galShaderPath;    ///< Path to shader files, used in OpenGL mode
 };

pcbnew/hotkeys.cpp

@@ -83,9 +83,11 @@ static EDA_HOTKEY HkResetLocalCoord( wxT( "Reset Local Coordinates" ),
 static EDA_HOTKEY HkSwitchHighContrastMode( wxT("Switch Highcontrast mode"),
 					    HK_SWITCH_HIGHCONTRAST_MODE,'H');
 #ifdef KICAD_GAL
-static EDA_HOTKEY HkCanvasDefault( wxT( "Switch to default canvas" ), HK_CANVAS_DEFAULT, WXK_F10 );
+static EDA_HOTKEY HkCanvasDefault( wxT( "Switch to default canvas" ), HK_CANVAS_DEFAULT, WXK_F9 );
-static EDA_HOTKEY HkCanvasCairo( wxT( "Switch to OpenGL canvas" ), HK_CANVAS_OPENGL, WXK_F11 );
+static EDA_HOTKEY HkCanvasOpenGL( wxT( "Switch to OpenGL canvas" ), HK_CANVAS_OPENGL, WXK_F10 );
-static EDA_HOTKEY HkCanvasOpenGL( wxT( "Switch to Cairo canvas" ), HK_CANVAS_CAIRO, WXK_F12 );
+static EDA_HOTKEY HkCanvasOpenGLShaders( wxT( "Switch to OpenGL canvas with shaders" ),
+                                         HK_CANVAS_OPENGL_SHADERS, WXK_F11 );
+static EDA_HOTKEY HkCanvasCairo( wxT( "Switch to Cairo canvas" ), HK_CANVAS_CAIRO, WXK_F12 );
 #endif
 /* Fit on Screen */
 #if !defined( __WXMAC__ )
@@ -234,7 +236,7 @@ EDA_HOTKEY* board_edit_Hotkey_List[] =
     &HkRecordMacros8,          &HkCallMacros8,    &HkRecordMacros9,          &HkCallMacros9,
     &HkSwitchHighContrastMode,
 #ifdef KICAD_GAL
-    &HkCanvasDefault,          &HkCanvasCairo,               &HkCanvasOpenGL,
+    &HkCanvasDefault, &HkCanvasCairo, &HkCanvasOpenGL, &HkCanvasOpenGLShaders,
 #endif
     NULL
 };

pcbnew/hotkeys.h

@@ -85,6 +85,7 @@ enum hotkey_id_commnand {
 #ifdef KICAD_GAL
     HK_CANVAS_DEFAULT,
     HK_CANVAS_OPENGL,
+    HK_CANVAS_OPENGL_SHADERS,
     HK_CANVAS_CAIRO,
 #endif
 };

pcbnew/menubar_pcbframe.cpp

@@ -366,6 +366,13 @@ void PCB_EDIT_FRAME::ReCreateMenuBar()
                  text, _( "Switch the canvas implementation to OpenGL" ),
                 KiBitmap( tools_xpm ) );
                 
+    text = AddHotkeyName( _( "&Switch canvas to OpenGL (shaders)" ), g_Pcbnew_Editor_Hokeys_Descr,
+            HK_CANVAS_OPENGL_SHADERS, IS_ACCELERATOR );
+
+    AddMenuItem( viewMenu, ID_MENU_CANVAS_OPENGL_SHADERS,
+                 text, _( "Switch the canvas implementation to OpenGL that uses shaders" ),
+                KiBitmap( tools_xpm ) );
+
     text = AddHotkeyName( _( "&Switch canvas to Cairo" ), g_Pcbnew_Editor_Hokeys_Descr,
             HK_CANVAS_CAIRO, IS_ACCELERATOR );
 

pcbnew/pcbframe.cpp

@@ -160,6 +160,7 @@ BEGIN_EVENT_TABLE( PCB_EDIT_FRAME, PCB_BASE_FRAME )
     EVT_MENU( ID_MENU_CANVAS_DEFAULT,           PCB_EDIT_FRAME::SwitchCanvas )
     EVT_MENU( ID_MENU_CANVAS_CAIRO,             PCB_EDIT_FRAME::SwitchCanvas )
     EVT_MENU( ID_MENU_CANVAS_OPENGL,            PCB_EDIT_FRAME::SwitchCanvas )
+    EVT_MENU( ID_MENU_CANVAS_OPENGL_SHADERS,    PCB_EDIT_FRAME::SwitchCanvas )
 
     // Menu Get Design Rules Editor
     EVT_MENU( ID_MENU_PCB_SHOW_DESIGN_RULES_DIALOG, PCB_EDIT_FRAME::ShowDesignRulesEditor )
@@ -587,6 +588,11 @@ void PCB_EDIT_FRAME::SwitchCanvas( wxCommandEvent& aEvent )
         break;
 
     case ID_MENU_CANVAS_OPENGL:
+        m_galCanvas->SwitchBackend( EDA_DRAW_PANEL_GAL::GAL_TYPE_OPENGL, false );
+        UseGalCanvas( true );
+        break;
+
+    case ID_MENU_CANVAS_OPENGL_SHADERS:
         m_galCanvas->SwitchBackend( EDA_DRAW_PANEL_GAL::GAL_TYPE_OPENGL, true );
         UseGalCanvas( true );
         break;

pcbnew/pcbnew_id.h

@@ -268,6 +268,7 @@ enum pcbnew_ids
     ID_MENU_PCB_SHOW_3D_FRAME,
     ID_MENU_CANVAS_DEFAULT,
     ID_MENU_CANVAS_OPENGL,
+    ID_MENU_CANVAS_OPENGL_SHADERS,
     ID_MENU_CANVAS_CAIRO,
     ID_PCB_USER_GRID_SETUP,
     ID_PCB_GEN_BOM_FILE_FROM_BOARD,