decouple repainting from blitting the FBO; draw touch overlay after FBO

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

diff --git a/src/game/g_window.pas b/src/game/g_window.pas
index 7774c0a34c0c03b2bda5fd5418ece817dc492963..c4d1b0fb73a7984ce18686733833b6189abbac3e 100644 (file)
--- a/src/game/g_window.pas
+++ b/src/game/g_window.pas
@@ -52,6 +52,7 @@ const
 
 var
   Time, Time_Delta, Time_Old: Int64;
+  Frame: Int64;
   flag: Boolean;
   wNeedTimeReset: Boolean = false;
   wMinimized: Boolean = false;
@@ -87,11 +88,18 @@ begin
 
     if forceUpdate then
     begin
+      e_SetRendertarget(True);
+      e_SetViewPort(0, 0, gScreenWidth, gScreenHeight);
+
       DrawMenuBackground('INTER');
       e_DarkenQuadWH(0, 0, gScreenWidth, gScreenHeight, 150);
-
       DrawLoadingStat();
       g_Console_Draw(True);
+
+      e_SetRendertarget(False);
+      e_SetViewPort(0, 0, gWinSizeX, gWinSizeY);
+      e_BlitFramebuffer(gWinSizeX, gWinSizeY);
+
       sys_Repaint;
       prevLoadingUpdateTime := getTimeMilli();
     end;
@@ -124,6 +132,7 @@ begin
 
   if wNeedTimeReset then
   begin
+    Frame := 0;
     Time_Delta := 28;
     wNeedTimeReset := false;
   end;
@@ -141,11 +150,6 @@ begin
       else if (NetMode = NET_CLIENT) then g_Net_Client_Update();
       Update();
     end;
-  end
-  else
-  begin
-         if (NetMode = NET_SERVER) then g_Net_Host_Update()
-    else if (NetMode = NET_CLIENT) then g_Net_Client_Update();
   end;
 
   if NetMode = NET_SERVER then g_Net_Flush();
@@ -167,18 +171,27 @@ begin
 
   // Âðåìÿ ïðåäûäóùåãî îáíîâëåíèÿ
   if flag then
-  begin
     Time_Old := Time - (Time_Delta mod 28);
+
+  // don't wait if VSync is on, GL already probably waits enough
+  if gLerpActors then
+    flag := (Time - Frame >= gFrameTime) or gVSync;
+
+  if flag then
+  begin
     if (not wMinimized) then
     begin
+      if gPause or not gLerpActors then
+        gLerpFactor := 1.0
+      else
+        gLerpFactor := nmin(1.0, (Time - Time_Old) / 28.0);
       Draw;
       sys_Repaint
-    end
+    end;
+    Frame := Time
   end
   else
-  begin
-    sys_Delay(1) // release time slice, so we won't eat 100% CPU
-  end;
+    sys_Delay(1);
 
   e_SoundUpdate();
 end;