always try to load FBO extensions in case user enables r_fbo later

[d2df-sdl.git] / src / game / sdl / g_system.pas

diff --git a/src/game/sdl/g_system.pas b/src/game/sdl/g_system.pas
index 00770890eb99be483c7e1f2b6cfe3e7cad38efaf..a4cbe649a3f7b4fcb39f7d908365e366776c9903 100644 (file)
--- a/src/game/sdl/g_system.pas
+++ b/src/game/sdl/g_system.pas
@@ -74,10 +74,17 @@ implementation
   begin
     gWinSizeX := w;
     gWinSizeY := h;
-    gScreenWidth := w;
-    gScreenHeight := h;
     gRC_Width := w;
     gRC_Height := h;
+    if glRenderToFBO then
+    begin
+      // store real window size in gWinSize, downscale resolution now
+      w := round(w / r_pixel_scale);
+      h := round(h / r_pixel_scale);
+      e_ResizeFramebuffer(w, h);
+    end;
+    gScreenWidth := w;
+    gScreenHeight := h;
     {$IFDEF ENABLE_HOLMES}
       fuiScrWdt := w;
       fuiScrHgt := h;
@@ -119,8 +126,15 @@ implementation
       if screen <> nil then
       begin
         {$IFDEF NOGL_INIT}
-          nogl_Init;
+        nogl_Init;
+        if (not nogl_ExtensionSupported('GL_OES_framebuffer_object')) and glRenderToFBO then
+        {$ELSE}
+        if (not Load_GL_ARB_framebuffer_object()) and glRenderToFBO then
         {$ENDIF}
+        begin
+          e_LogWriteln('SDL: no framebuffer object support detected');
+          glRenderToFBO := False
+        end;
         SDL_WM_SetCaption(GetTitle(), nil);
         gFullScreen := fullscreen;
         gRC_FullScreen := fullscreen;
@@ -136,6 +150,8 @@ implementation
 
   procedure sys_Repaint;
   begin
+    if glRenderToFBO then
+      e_BlitFramebuffer(gWinSizeX, gWinSizeY);
     SDL_GL_SwapBuffers
   end;