X-Git-Url: https://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fgame%2Fg_window.pas;h=045a49ff69cea7a4355e292417fd58edaf07711a;hb=7869ee331ead2e3f765af47eeca1566ed97faa19;hp=6ffa8ff05468b132ff35b3eaa2e8b4b988979a7e;hpb=e2c0ffbd3c4bc1516930552924062d56447df065;p=d2df-sdl.git

diff --git a/src/game/g_window.pas b/src/game/g_window.pas
index 6ffa8ff..045a49f 100644
--- a/src/game/g_window.pas
+++ b/src/game/g_window.pas
@@ -13,7 +13,7 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *)
-{$MODE DELPHI}
+{$INCLUDE ../shared/a_modes.inc}
 unit g_window;
 
 interface
@@ -38,6 +38,8 @@ function  g_Window_SetSize(W, H: Word; FScreen: Boolean): Boolean;
 
 var
   gwin_dump_extensions: Boolean = false;
+  gwin_has_stencil: Boolean = false;
+  gwin_k8_enable_light_experiments: Boolean = false;
 
 implementation
 
@@ -640,6 +642,10 @@ begin
   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+  if gwin_k8_enable_light_experiments then
+  begin
+    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 1); // lights; it is enough to have 1-bit stencil buffer for lighting
+  end;
   SDL_GL_SetSwapInterval(v);
 end;
 
@@ -685,11 +691,20 @@ begin
 end;
 
 function SDLMain(): Integer;
+var
+  idx: Integer;
+  ltmp: Integer;
 begin
 {$IFDEF HEADLESS}
   e_NoGraphics := True;
 {$ENDIF}
 
+  for idx := 1 to ParamCount do
+  begin
+    if ParamStr(idx) = '--opengl-dump-exts' then gwin_dump_extensions := true;
+    if ParamStr(idx) = '--twinkletwinkle' then gwin_k8_enable_light_experiments := true;
+  end;
+
   e_WriteLog('Initializing OpenGL', MSG_NOTIFY);
   InitOpenGL(gVSync);
 
@@ -702,6 +717,17 @@ begin
 
   {EnumDisplayModes();}
 
+  if gwin_k8_enable_light_experiments then
+  begin
+    SDL_GL_GetAttribute(SDL_GL_STENCIL_SIZE, @ltmp);
+    e_WriteLog(Format('stencil buffer size: %d', [ltmp]), MSG_WARNING);
+    gwin_has_stencil := (ltmp > 0);
+  end
+  else
+  begin
+    gwin_has_stencil := false;
+  end;
+
   if not glHasExtension('GL_ARB_texture_non_power_of_two') then
   begin
     e_WriteLog('Driver DID''T advertised NPOT textures support', MSG_WARNING);
@@ -712,6 +738,7 @@ begin
     e_WriteLog('Driver advertised NPOT textures support', MSG_NOTIFY);
     glLegacyNPOT := false;
   end;
+  gwin_dump_extensions := false;
 
   Init();
   Time_Old := GetTimer();