fix slope interpolation; add r_maxfps

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

diff --git a/src/game/g_window.pas b/src/game/g_window.pas
index afc23e2b1b22a6e22f4adcd9e89cfa154495e10b..f55c43001f90849c064bfc3a98b9dac28370322f 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;
@@ -124,6 +125,7 @@ begin
 
   if wNeedTimeReset then
   begin
+    Frame := 0;
     Time_Delta := 28;
     wNeedTimeReset := false;
   end;
@@ -167,18 +169,27 @@ 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;
@@ -326,6 +337,15 @@ begin
       mdfo.Free();
       Halt(0);
     end;
+
+    if (arg = '--pixel-scale') or (arg = '-pixel-scale') then
+    begin
+      if (idx <= ParamCount) then
+      begin
+        if not conParseFloat(r_pixel_scale, ParamStr(idx)) then r_pixel_scale := 1.0;
+        Inc(idx);
+      end;
+    end;
   end;
 
 {$IFNDEF USE_SYSSTUB}
@@ -333,6 +353,7 @@ begin
   glLegacyNPOT := not (GLExtensionSupported('GL_ARB_texture_non_power_of_two') or GLExtensionSupported('GL_OES_texture_npot'));
 {$ELSE}
   glLegacyNPOT := False;
+  glRenderToFBO := False;
 {$ENDIF}
   if glNPOTOverride and glLegacyNPOT then
   begin