Add events when the GL rendering context is lost/restored (only affects old SDL backend and Android target right now)

project/include/Display.h

@@ -59,7 +59,10 @@ enum EventType
    etJoyButtonDown, // 27
    etJoyButtonUp, // 28
    
-   etSysWM, //29
+   etSysWM, // 29
+   
+   etRenderContextLost, // 30
+   etRenderContextRestored, // 31
 };
 
 enum EventFlags

project/src/backend/sdl/SDLStage.cpp

@@ -361,6 +361,12 @@ public:
          // display lists. So Work around it.
          gTextureContextVersion++;
          
+         if (mIsOpenGL)
+         {
+            Event contextLost(etRenderContextLost);
+            ProcessEvent(contextLost);
+         }
+ 
          mSDLSurface = SDL_SetVideoMode(inWidth, inHeight, 32, mFlags);
   
          if (mIsOpenGL)
@@ -382,6 +388,9 @@ public:
             mOpenGLContext->IncRef();
             mPrimarySurface->DecRef();
             mPrimarySurface = new HardwareSurface(mOpenGLContext);
+            
+            Event contextRestored(etRenderContextRestored);
+            ProcessEvent(contextRestored);
          }
          else
          {
@@ -414,6 +423,12 @@ public:
          // display lists. So Work around it.
          gTextureContextVersion++;
          
+         if (mIsOpenGL)
+         {
+            Event contextLost(etRenderContextLost);
+            ProcessEvent(contextLost);
+         }
+
          int w = mIsFullscreen ? sgDesktopWidth : mWidth;
          int h = mIsFullscreen ? sgDesktopHeight : mHeight;
          if (mIsFullscreen)
@@ -441,6 +456,9 @@ public:
             mOpenGLContext->IncRef();
             mPrimarySurface->DecRef();
             mPrimarySurface = new HardwareSurface(mOpenGLContext);
+            
+            Event contextRestored(etRenderContextRestored);
+            ProcessEvent(contextRestored);
          }
          else
          {

project/src/platform/android/AndroidFrame.cpp

@@ -113,7 +113,11 @@ public:
    void Resize(int inWidth,int inHeight)
    {
       ResetHardwareContext();
+      Event contextLost(etRenderContextLost);
+      HandleEvent(contextLost);
       mHardwareContext->SetWindowSize(inWidth,inHeight);
+      Event contextRestored(etRenderContextRestored);
+      HandleEvent(contextRestored);
       Event evt(etResize, inWidth, inHeight);
       HandleEvent(evt);
    }
@@ -314,7 +318,7 @@ public:
       }
       else
       {
-         ResetHardwareContext();
+         //ResetHardwareContext();
          sStage->Resize(inWidth,inHeight);
       }
    }