xrEngine: implement splash on linux

Author: eagleivg

src/xrEngine/splash.cpp

@@ -2,24 +2,29 @@
 #include "xr_3da/resource.h"
 #include "splash.h"
 
+#if defined(WINDOWS)
 HWND logoWindow = nullptr;
+#else
+SDL_Window* logoWindow = nullptr;
+SDL_Renderer *logoRenderer;
+#endif
 
+#if defined(WINDOWS)
 static INT_PTR CALLBACK LogoWndProc(HWND hw, UINT msg, WPARAM wp, LPARAM lp)
 {
     switch (msg)
     {
-#if defined(WINDOWS)
     case WM_DESTROY: break;
     case WM_CLOSE: DestroyWindow(hw); break;
     case WM_COMMAND:
         if (LOWORD(wp) == IDCANCEL)
             DestroyWindow(hw);
         break;
-#endif
     default: return false;
     }
     return true;
 }
+#endif
 
 namespace splash
 {
@@ -36,6 +41,28 @@ void show(const bool topmost)
     SetWindowPos(logoWindow, prevWindow, 0, 0, logoRect.right - logoRect.left, logoRect.bottom - logoRect.top,
         SWP_NOMOVE | SWP_SHOWWINDOW);
     UpdateWindow(logoWindow);
+#else
+    SDL_CreateWindowAndRenderer(320, 240, SDL_WINDOW_RESIZABLE | SDL_WINDOW_BORDERLESS | SDL_WINDOW_HIDDEN, &logoWindow, &logoRenderer);
+
+    SDL_Surface *surface = SDL_LoadBMP("logo.bmp"); // need placed logo.bmp beside of fsgame.ltx
+    if (!surface) {
+        Msg("Couldn't create surface from image: %s", SDL_GetError());
+        return;
+    }
+
+    SDL_Rect rect;
+    SDL_GetClipRect(surface, &rect);
+    SDL_SetWindowSize(logoWindow, rect.w, rect.h);
+    SDL_Texture *texture = SDL_CreateTextureFromSurface(logoRenderer, surface);
+    SDL_FreeSurface(surface);
+    SDL_ShowWindow(logoWindow);
+
+    SDL_SetRenderDrawColor(logoRenderer, 0x00, 0x00, 0x00, 0x00);
+    SDL_RenderClear(logoRenderer);
+    SDL_RenderCopy(logoRenderer, texture, NULL, NULL);
+    SDL_RenderPresent(logoRenderer);
+    SDL_UpdateWindowSurface(logoWindow);
+
 #endif
 }
 
@@ -45,6 +72,8 @@ void hide()
     {
 #if defined(WINDOWS)
         DestroyWindow(logoWindow);
+#else
+        SDL_DestroyWindow(logoWindow);
 #endif
         logoWindow = nullptr;
     }