(* Copyright (C)  Doom 2D: Forever Developers
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3 of the License ONLY.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *)
{$INCLUDE ../../../shared/a_modes.inc}
unit r_render;

interface

  uses
    {$IFDEF ENABLE_MENU}
      g_gui,
    {$ENDIF}
    g_base // TRectWH
  ;

  (* render startup *)
  procedure r_Render_Initialize;
  procedure r_Render_Finalize;

  (* load globally used textures *)
  procedure r_Render_Load;
  procedure r_Render_Free;

  (* load map specific textures *)
  procedure r_Render_LoadTextures;
  procedure r_Render_FreeTextures;

  procedure r_Render_Update;
  procedure r_Render_Draw;

  procedure r_Render_Resize (w, h: Integer);
  procedure r_Render_Apply;

  function r_Render_WriteScreenShot (filename: String): Boolean;

  {$IFDEF ENABLE_GIBS}
    function r_Render_GetGibRect (m, id: Integer): TRectWH;
  {$ENDIF}

  {$IFDEF ENABLE_GFX}
    procedure r_Render_QueueEffect (AnimType, X, Y: Integer);
  {$ENDIF}

  {$IFDEF ENABLE_TOUCH}
    // touch screen button location and size
    procedure r_Render_GetKeyRect (key: Integer; out x, y, w, h: Integer; out founded: Boolean);
  {$ENDIF}

  {$IFDEF ENABLE_MENU}
    procedure r_Render_GetControlSize (ctrl: TGUIControl; out w, h: Integer);
    procedure r_Render_GetLogoSize (out w, h: Integer);
    procedure r_Render_GetMaxFontSize (BigFont: Boolean; out w, h: Integer);
    procedure r_Render_GetStringSize (BigFont: Boolean; str: String; out w, h: Integer);
  {$ENDIF}

  procedure r_Render_DrawLoading (force: Boolean); // !!! remove it

implementation

  uses
    {$IFDEF USE_GLES1}
      GLES11,
    {$ELSE}
      GL, GLEXT,
    {$ENDIF}
    {$IFDEF ENABLE_MENU}
      r_gui,
    {$ENDIF}
    {$IFDEF ENABLE_SYSTEM}
      g_system,
    {$ENDIF}
    SysUtils, Classes, Math,
    e_log, utils,
    g_basic,
    g_game, g_map, g_options, g_console, g_player, g_weapons, g_language,
    g_net, g_netmaster,
    r_draw, r_textures, r_fonts, r_common, r_console, r_map
  ;

  type
    TBasePoint = (
      BP_LEFTUP,   BP_UP,     BP_RIGHTUP,
      BP_LEFT,     BP_CENTER, BP_RIGHT,
      BP_LEFTDOWN, BP_DOWN,   BP_RIGHTDOWN
    );

  var
    BackgroundTexture: THereTexture;

    hud, hudbg: TGLTexture;
    hudhp: array [Boolean] of TGLTexture;
    hudap: TGLTexture;
    hudwp: array [0..WP_LAST] of TGLTexture;
    hudkey: array [0..2] of TGLTexture;
    hudair: TGLTexture;
    hudjet: TGLTexture;
    hudrflag, hudrflags, hudrflagd: TGLTexture;
    hudbflag, hudbflags, hudbflagd: TGLTexture;

  procedure r_Render_LoadTextures;
  begin
    r_Map_LoadTextures;
  end;

  procedure r_Render_FreeTextures;
  begin
    r_Map_FreeTextures;
  end;

  procedure r_Render_Load;
    const
      WeapName: array [0..WP_LAST] of AnsiString = ('KASTET', 'SAW', 'PISTOL', 'SHOTGUN1', 'SHOTGUN2', 'MGUN', 'RLAUNCHER', 'PGUN', 'BFG', 'SPULEMET', 'FLAMETHROWER');
    var
      i: Integer;
  begin
    r_Common_Load;
    BackgroundTexture := DEFAULT(THereTexture);
    hud :=  r_Textures_LoadFromFile(GameWAD + ':TEXTURES/HUD');
    hudbg :=  r_Textures_LoadFromFile(GameWAD + ':TEXTURES/HUDBG');
    hudhp[false] := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/MED2');
    hudhp[true] := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/BMED');
    hudap := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/ARMORHUD');
    for i := 0 to WP_LAST do
      hudwp[i] := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/' + WeapName[i]);
    hudkey[0] := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/KEYR');
    hudkey[1] := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/KEYG');
    hudkey[2] := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/KEYB');
    hudair := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/AIRBAR');
    hudjet := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/JETBAR');
    hudrflag := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/FLAGHUD_R_BASE');
    hudrflags := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/FLAGHUD_R_STOLEN');
    hudrflagd := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/FLAGHUD_R_DROP');
    hudbflag := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/FLAGHUD_B_BASE');
    hudbflags := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/FLAGHUD_B_STOLEN');
    hudbflagd := r_Textures_LoadFromFile(GameWAD + ':TEXTURES/FLAGHUD_B_DROP');
    r_Console_Load;
    r_Map_Load;
    {$IFDEF ENABLE_MENU}
      r_GUI_Load;
    {$ENDIF}
  end;

  procedure r_Render_Free;
    var i: Integer;
  begin
    {$IFDEF ENABLE_MENU}
      r_GUI_Free;
    {$ENDIF}
    r_Map_Free;
    r_Console_Free;
    hudbflagd.Free;
    hudbflags.Free;
    hudbflag.Free;
    hudrflagd.Free;
    hudrflags.Free;
    hudrflag.Free;
    hudjet.Free;
    hudair.Free;
    hudkey[0].Free;
    hudkey[1].Free;
    hudkey[2].Free;
    for i := 0 to WP_LAST do
    begin
      if hudwp[i] <> nil then
        hudwp[i].Free;
      hudwp[i] := nil;
    end;
    hudap.Free;
    hudhp[true].Free;
    hudhp[false].Free;
    hudbg.Free;
    hud.Free;
    r_Common_FreeThis(BackgroundTexture);
    r_Common_Free;
  end;

{$IFDEF ENABLE_SYSTEM}
  function GetInfo (): TGLDisplayInfo;
    var info: TGLDisplayInfo;
  begin
    info := Default(TGLDisplayInfo);
    info.w := Max(1, gRC_Width);
    info.h := Max(1, gRC_Height);
    info.bpp := Max(1, gBPP);
    info.fullscreen := gRC_FullScreen;
    info.maximized := gRC_Maximized;
    info.major := 1;
    info.minor := 1;
    info.profile := TGLProfile.Compat;
    result := info;
  end;
{$ENDIF}

  procedure r_Render_Initialize;
  begin
    {$IFDEF ENABLE_SYSTEM}
      if sys_SetDisplayModeGL(GetInfo()) = False then
        raise Exception.Create('Failed to set videomode on startup.');
      sys_EnableVSync(gVSync);
    {$ENDIF}
    r_Textures_Initialize;
    r_Console_Initialize;
    r_Map_Initialize;
  end;

  procedure r_Render_Finalize;
  begin
    r_Map_Finalize;
    r_Console_Finalize;
    r_Textures_Finalize;
  end;

  procedure r_Render_Update;
  begin
    r_Console_Update;
    r_Map_Update;
  end;

  procedure r_Render_GetBasePoint (x, y, w, h: Integer; p: TBasePoint; out xx, yy: Integer);
  begin
    case p of
      TBasePoint.BP_LEFTUP,  TBasePoint.BP_LEFT,   TBasePoint.BP_LEFTDOWN:  xx := x;
      TBasePoint.BP_UP,      TBasePoint.BP_CENTER, TBasePoint.BP_DOWN:      xx := x - w div 2;
      TBasePoint.BP_RIGHTUP, TBasePoint.BP_RIGHT,  TBasePoint.BP_RIGHTDOWN: xx := x - w;
    end;
    case p of
      TBasePoint.BP_LEFTUP,   TBasePoint.BP_UP,     TBasePoint.BP_RIGHTUP:   yy := y;
      TBasePoint.BP_LEFT,     TBasePoint.BP_CENTER, TBasePoint.BP_RIGHT:     yy := y - h div 2;
      TBasePoint.BP_LEFTDOWN, TBasePoint.BP_DOWN,   TBasePoint.BP_RIGHTDOWN: yy := y - h;
    end;
  end;

  procedure r_Render_DrawText (const text: AnsiString; x, y: Integer; r, g, b, a: Byte; f: TGLFont; p: TBasePoint);
    var w, h: Integer;
  begin
    if p <> TBasePoint.BP_LEFTUP then
    begin
      r_Draw_GetTextSize(text, f, w, h);
      r_Render_GetBasePoint(x, y, w, h, p, x, y);
    end;
    r_Draw_Text(text, x, y, r, g, b, a, f);
  end;

  procedure r_Render_DrawTexture (img: TGLTexture; x, y, w, h: Integer; p: TBasePoint);
  begin
    r_Render_GetBasePoint(x, y, w, h, p, x, y);
    r_Draw_TextureRepeat(img, x, y, w, h, false, 255, 255, 255, 255, false);
  end;

  procedure r_Render_DrawHUD (x, y: Integer; p: TPlayer);
    var t: TGLTexture; s: AnsiString;
  begin
    ASSERT(p <> nil);

    // hud area is 196 x 240 pixels
    r_Render_DrawTexture(hud, x, y, hud.width, hud.height, TBasePoint.BP_LEFTUP);
    r_Render_DrawText(p.name, x + 98, y + 16, 255, 0, 0, 255, smallfont, TBasePoint.BP_CENTER);

    t := hudhp[R_BERSERK in p.FRulez];
    r_Render_DrawTexture(t, x + 51, y + 61, t.width, t.height, TBasePoint.BP_CENTER);
    r_Render_DrawTexture(hudap, x + 50, y + 85, hudap.width, hudap.height, TBasePoint.BP_CENTER);

    r_Render_DrawText(IntToStr(MAX(0, p.health)), x + 174, y + 56, 255, 0, 0, 255, menufont, TBasePoint.BP_RIGHT);
    r_Render_DrawText(IntToStr(MAX(0, p.armor)), x + 174, y + 84, 255, 0, 0, 255, menufont, TBasePoint.BP_RIGHT);

    case p.CurrWeap of
      WEAPON_KASTET, WEAPON_SAW: s := '--';
      else s := IntToStr(p.GetAmmoByWeapon(p.CurrWeap));
    end;
    r_Render_DrawText(s, x + 174, y + 174, 255, 0, 0, 255, menufont, TBasePoint.BP_RIGHT);

    if p.CurrWeap <= WP_LAST then
    begin
      t := hudwp[p.CurrWeap];
      r_Render_DrawTexture(t, x + 18, y + 160, t.width, t.height, TBasePoint.BP_LEFTUP);
    end;

    if R_KEY_RED in p.FRulez then
      r_Render_DrawTexture(hudkey[0], x + 76, y + 214, 16, 16, TBasePoint.BP_LEFTUP);
    if R_KEY_GREEN in p.FRulez then
      r_Render_DrawTexture(hudkey[1], x + 93, y + 214, 16, 16, TBasePoint.BP_LEFTUP);
    if R_KEY_BLUE in p.FRulez then
      r_Render_DrawTexture(hudkey[2], x + 110, y + 214, 16, 16, TBasePoint.BP_LEFTUP);

    if p.JetFuel > 0 then
    begin
      r_Render_DrawTexture(hudair, x, y + 116, hudair.width, hudair.height, TBasePoint.BP_LEFTUP);
      if p.air > 0 then
        r_Draw_FillRect(x + 14, y + 116 + 4, x + 14 + 168 * p.air div AIR_MAX, y + 116 + 4 + 4, 0, 0, 196, 255);
      r_Render_DrawTexture(hudjet, x, y + 126, hudjet.width, hudjet.height, TBasePoint.BP_LEFTUP);
      r_Draw_FillRect(x + 14, y + 126 + 4, x + 14 + 168 * p.JetFuel div JET_MAX, y + 126 + 4 + 4, 208, 0, 0, 255);
    end
    else
    begin
      r_Render_DrawTexture(hudair, x, y + 124, hudair.width, hudair.height, TBasePoint.BP_LEFTUP);
      if p.air > 0 then
        r_Draw_FillRect(x + 14, y + 124 + 4, x + 14 + 168 * p.air div AIR_MAX, y + 124 + 4 + 4, 0, 0, 196, 255);
    end;
  end;

  procedure r_Render_DrawHUDArea (x, y, w, h: Integer; p: TPlayer);
    var s: AnsiString;
  begin
    r_Render_DrawTexture(hudbg, x, y, w, h, TBasePoint.BP_LEFTUP);

    if p <> nil then
      r_Render_DrawHUD(x + w - 196 + 2, y, p);

    if gShowPing and g_Game_IsClient then
    begin
      s := _lc[I_GAME_PING_HUD] + IntToStr(NetPeer.lastRoundTripTime) + _lc[I_NET_SLIST_PING_MS];
      r_Render_DrawText(s, x + 4, y + 242, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);
    end;

    if p.Spectator then
    begin
      r_Render_DrawText(_lc[I_PLAYER_SPECT], x + 4, y + 242, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);
      r_Render_DrawText(_lc[I_PLAYER_SPECT2], x + 4, y + 258, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);
      r_Render_DrawText(_lc[I_PLAYER_SPECT1], x + 4, y + 274, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);
      if p.NoRespawn then
        r_Render_DrawText(_lc[I_PLAYER_SPECT1S], x + 4, y + 290, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);
    end;
  end;

  procedure r_Render_DrawStatsView (x, y, w, h: Integer; p: TPlayer);
    var fw, i, maxFrags, top, totalPlayers: Integer; sign: Char; stat: TPlayerStatArray; f: TGLTexture;
  begin
    ASSERT(p <> nil);

    if gShowScore and (gGameSettings.GameMode in [GM_TDM, GM_CTF]) then
    begin
      (* RED TEAM GOALS *)
      fw := 0;
      if gGameSettings.GameMode = GM_CTF then
      begin
        case gFlags[FLAG_RED].State of
          FLAG_STATE_CAPTURED: f := hudrflags;
          FLAG_STATE_DROPPED:  f := hudrflagd;
          otherwise            f := hudrflag;
        end;
        if f <> nil then
        begin
          fw := f.width + 8; (* + space *)
          r_Render_DrawTexture(f, x + w - 16, y + 240 - 72 - 4, f.width, f.height, TBasePoint.BP_RIGHTUP);
        end;
      end;
      r_Render_DrawText(IntToStr(gTeamStat[TEAM_RED].Score), x + w - 16 - fw, y + 240 - 72 - 4, TEAMCOLOR[TEAM_RED].R, TEAMCOLOR[TEAM_RED].G, TEAMCOLOR[TEAM_RED].B, 255, menufont, TBasePoint.BP_RIGHTUP);

      (* BLUE TEAM GOALS *)
      fw := 0;
      if gGameSettings.GameMode = GM_CTF then
      begin
        case gFlags[FLAG_BLUE].State of
          FLAG_STATE_CAPTURED: f := hudbflags;
          FLAG_STATE_DROPPED:  f := hudbflagd;
          otherwise            f := hudbflag;
        end;
        if f <> nil then
        begin
          fw := f.width + 8; (* + space *)
          r_Render_DrawTexture(f, x + w - 16, y + 240 - 32 - 4, f.width, f.height, TBasePoint.BP_RIGHTUP);
        end;
      end;
      r_Render_DrawText(IntToStr(gTeamStat[TEAM_BLUE].Score), x + w - 16 - fw, y + 240 - 32 - 4, TEAMCOLOR[TEAM_RED].R, TEAMCOLOR[TEAM_RED].G, TEAMCOLOR[TEAM_RED].B, 255, menufont, TBasePoint.BP_RIGHTUP);
    end;

    if gGameSettings.GameType in [GT_CUSTOM, GT_SERVER, GT_CLIENT] then
    begin
      if gShowStat then
      begin
        r_Render_DrawText(IntToStr(p.Frags), x + w - 16, y, 255, 0, 0, 255, menufont, TBasePoint.BP_RIGHTUP);

        top := 1;
        maxFrags := 0;
        totalPlayers := 0;
        stat := g_Player_GetStats();
        if stat <> nil then
        begin
          totalPlayers := Length(stat);
          for i := 0 to High(stat) do
          begin
            if stat[i].Name <> p.Name then
            begin
              maxFrags := MAX(maxFrags, stat[i].Frags);
              if stat[i].Frags > p.Frags then
                top := top + 1;
            end;
          end;
        end;
        if p.Frags >= maxFrags then sign := '+' else sign := '-';
        r_Render_DrawText(IntToStr(top) + ' / ' + IntToStr(totalPlayers) + ' ' + sign + IntToStr(ABS(p.Frags - maxFrags)), x + w - 16, y + 32, 255, 0, 0, 255, smallfont, TBasePoint.BP_RIGHTUP);
      end;

      if gLMSRespawn > LMS_RESPAWN_NONE then
      begin
        r_Render_DrawText(_lc[I_GAME_WARMUP], x + w - 16 - 64, y + h, 0, 255, 0, 255, menufont, TBasePoint.BP_RIGHTDOWN);
        r_Render_DrawText(': ' + IntToStr((gLMSRespawnTime - gTime) div 1000), x + w - 16 - 64, y + h, 0, 255, 0, 255, menufont, TBasePoint.BP_LEFTDOWN);
      end
      else if gShowLives and (gGameSettings.MaxLives > 0) then
      begin
        r_Render_DrawText(IntToStr(p.Lives), x + w - 16, y + h, 0, 255, 0, 255, menufont, TBasePoint.BP_RIGHTDOWN);
      end;
    end;
  end;

  procedure r_Render_DrawView (x, y, w, h: Integer; p: TPlayer);
    var l, t, r, b: Integer;
  begin
    r_Draw_GetRect(l, t, r, b);
    r_Draw_SetRect(x, y, x + w, y + h);

    if p <> nil then
    begin
      r_Map_Draw(x, y, w, h, p.obj.x + PLAYER_RECT_CX, p.obj.y + PLAYER_RECT_CY, p);
      r_Render_DrawStatsView(x, y, w, h, p);
      if p.Spectator and p.NoRespawn then
        r_Render_DrawText(_lc[I_PLAYER_SPECT4], x div 2 + w div 2, y div 2 + h div 2, 255, 255, 255, 255, stdfont, TBasePoint.BP_CENTER);
    end
    else
    begin
      r_Map_Draw(x, y, w, h, 0, 0, nil);
    end;

    r_Draw_SetRect(l, t, r, b);
  end;

  procedure r_Render_DrawPlayerView (x, y, w, h: Integer; p: TPlayer);
    var l, t, r, b: Integer;
  begin
    r_Draw_GetRect(l, t, r, b);
    r_Draw_SetRect(x, y, x + w, y + h);
    r_Render_DrawView(x, y, w - 196, h, p);
    r_Render_DrawHUDArea(x + w - 196, y, 196, h, p);
    r_Draw_SetRect(l, t, r, b);
  end;

  procedure r_Render_DrawBackgroundImage (img: TGLTexture);
    var fw, w, h: LongInt;
  begin
    if img <> nil then
    begin
      img := BackgroundTexture.id;
      fw := img.width * 4 div 3; // fix aspect 4:3
      r_Common_CalcAspect(fw, img.height, gScreenWidth, gScreenHeight, false, w, h);
      r_Draw_Texture(img, gScreenWidth div 2 - w div 2, 0, w, h, false, 255, 255, 255, 255, false);
    end
  end;

  procedure r_Render_DrawBackground (const name: AnsiString);
  begin
    if r_Common_LoadThis(name, BackgroundTexture) then
      r_Render_DrawBackgroundImage(BackgroundTexture.id)
  end;

  procedure r_Render_DrawServerList (var SL: TNetServerList; var ST: TNetServerTable);
    var ip: AnsiString; ww, hh, cw, ch, mw, mh, motdh, scrx, scry, i, mx, y: Integer; msg: SSArray; Srv: TNetServer;
  begin
    scrx := gScreenWidth div 2;
    scry := gScreenHeight div 2;

    r_Draw_GetTextSize(_lc[I_NET_SLIST], menufont, ww, hh);
    r_Render_DrawText(_lc[I_NET_SLIST], gScreenWidth div 2, 16, 255, 255, 255, 255, menufont, TBasePoint.BP_UP);

    r_Draw_GetTextSize('W', stdfont, cw, ch);
    motdh := gScreenHeight - 49 - ch * b_Text_LineCount(slMOTD);

    r_Draw_FillRect(16, 64, gScreenWidth - 16, motdh, 64, 64, 64, 145);
    r_Draw_Rect(16, 64, gScreenWidth - 16, motdh, 255, 127, 0, 255);

    r_Render_DrawText(_lc[I_NET_SLIST_HELP], gScreenWidth div 2, gScreenHeight - 8, 255, 255, 255, 255, stdfont, TBasePoint.BP_DOWN);

    if slMOTD <> '' then
    begin
      r_Draw_FillRect(16, motdh, gScreenWidth - 16, gScreenHeight - 44, 64, 64, 64, 110);
      r_Draw_Rect(16, motdh, gScreenWidth - 16, gScreenHeight - 44, 255, 127, 0, 255);
      msg := Parse2(slMOTD, #10);
      for i := 0 to High(msg) do
        r_Render_DrawText(msg[i], 20, motdh + 3 + ch * i, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);
    end;

    if not slReadUrgent and (slUrgent <> '') then
    begin
      r_Draw_FillRect(17, 65, gScreenWidth - 17, motdh - 1, 64, 64, 64, 127);
      r_Draw_FillRect(scrx - 256, scry - 60, scrx + 256, scry + 60, 64, 64, 64, 127);
      r_Draw_Rect(scrx - 256, scry - 60, scrx + 256, scry + 60, 255, 127, 0, 255);
      r_Draw_FillRect(scrx - 256, scry - 40, scrx + 256, scry - 40, 255, 127, 0, 255);
      r_Render_DrawText(_lc[I_NET_SLIST_URGENT], scrx, scry - 58, 255, 255, 255, 255, stdfont, TBasePoint.BP_UP);
      msg := Parse2(slUrgent, #10);
      for i := 0 to High(msg) do
        r_Render_DrawText(msg[i], scrx - 253, scry - 38 + ch * i, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);
      r_Render_DrawText(_lc[I_NET_SLIST_URGENT_CONT], scrx, scry + 41, 255, 255, 255, 255, stdfont, TBasePoint.BP_UP);
      r_Draw_FillRect(scrx - 256, scry + 40, scrx + 256, scry + 40, 255, 127, 0, 255);
    end
    else if SL = nil then
    begin
      r_Draw_FillRect(17, 65, gScreenWidth - 17, motdh - 1, 64, 64, 64, 127);
      r_Draw_Rect(scrx - 192, scry - 10, scrx + 192, scry + 11, 255, 127, 0, 255);
      r_Render_DrawText(slWaitStr, scrx, scry, 255, 255, 255, 255, stdfont, TBasePoint.BP_CENTER);
    end
    else
    begin
      y := 90;
      if slSelection < Length(ST) then
      begin
        sy := y + 42 * slSelection - 4;
        Srv := GetServerFromTable(slSelection, SL, ST);
        ip := _lc[I_NET_ADDRESS] + ' ' + Srv.IP + ':' + IntToStr(Srv.Port);
        ip := ip + '  ' + _lc[I_NET_SERVER_PASSWORD] + ' ';
        if Srv.Password then ip := ip + _lc[I_MENU_YES] else ip := ip +_lc[I_MENU_NO];
      end;

      mw := gScreenWidth - 188;
      mx := 16 + mw;

      r_Draw_FillRect(16 + 1, sy, gScreenWidth - 16 - 1, sy + 40, 64, 64, 64, 255);
      r_Draw_FillRect(16 + 1, sy, gScreenWidth - 16 - 1, sy, 205, 205, 205, 255);
      r_Draw_FillRect(16 + 1, sy + 41, gScreenWidth - 16 - 1, sy + 41, 255, 255, 255, 255);

      r_Draw_FillRect(16, 85, gScreenWidth - 16, 85, 255, 127, 0, 255);
      r_Draw_FillRect(16, motdh - 20, gScreenWidth - 16, motdh - 20, 255, 127, 0, 255);

      r_Draw_FillRect(mx - 70, 64, mx - 70, motdh, 255, 127, 0, 255);
      r_Draw_FillRect(mx, 64, mx, motdh - 20, 255, 127, 0, 255);
      r_Draw_FillRect(mx + 52, 64, mx + 52, motdh - 20, 255, 127, 0, 255);
      r_Draw_FillRect(mx + 104, 64, mx + 104, motdh - 20, 255, 127, 0, 255);

      r_Render_DrawText('NAME/MAP', 18, 68, 255, 127, 0, 255, stdfont, TBasePoint.BP_LEFTUP);
      r_Render_DrawText('PING', mx - 68, 68, 255, 127, 0, 255, stdfont, TBasePoint.BP_LEFTUP);
      r_Render_DrawText('MODE', mx + 2, 68, 255, 127, 0, 255, stdfont, TBasePoint.BP_LEFTUP);
      r_Render_DrawText('PLRS', mx + 54, 68, 255, 127, 0, 255, stdfont, TBasePoint.BP_LEFTUP);
      r_Render_DrawText('VER', mx + 106, 68, 255, 127, 0, 255, stdfont, TBasePoint.BP_LEFTUP);

      for i := 0 to High(ST) do
      begin
        Srv := GetServerFromTable(i, SL, ST);
        r_Render_DrawText(Srv.Name, 18, y, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);
        r_Render_DrawText(Srv.Map,  18, y + 16, 210, 210, 210, 255, stdfont, TBasePoint.BP_LEFTUP);

        if Srv.Ping = 0 then
          r_Render_DrawText('<1' + _lc[I_NET_SLIST_PING_MS], mx - 68, y, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP)
        else if (Srv.Ping >= 0) and (Srv.Ping <= 999) then
          r_Render_DrawText(IntToStr(Srv.Ping) + _lc[I_NET_SLIST_PING_MS], mx - 68, y, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP)
        else
          r_Render_DrawText(_lc[I_NET_SLIST_NO_ACCESS], mx - 68, y, 255, 0, 0, 255, stdfont, TBasePoint.BP_LEFTUP);
        if Length(ST[I].Indices) > 1 then
          r_Render_DrawText('<' + IntToStr(Length(ST[I].Indices)) + '>', mx - 68, y + 16, 210, 210, 210, 255, stdfont, TBasePoint.BP_LEFTUP);

        r_Render_DrawText(g_Game_ModeToText(Srv.GameMode), mx + 2, y, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);

        r_Render_DrawText(IntToStr(Srv.Players) + '/' + IntToStr(Srv.MaxPlayers), mx + 54, y, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);
        r_Render_DrawText(IntToStr(Srv.LocalPl) + '+' + IntToStr(Srv.Bots), mx + 54, y + 16, 210, 210, 210, 255, stdfont, TBasePoint.BP_LEFTUP);

        r_Render_DrawText(IntToStr(Srv.Protocol), mx + 106, y, 255, 255, 255, 255, stdfont, TBasePoint.BP_LEFTUP);

        y := y + 42;
      end;

      r_Render_DrawText(ip, 20, motdh - 20 + 3, 205, 205, 205, 255, stdfont, TBasePoint.BP_LEFTUP);
      r_Render_DrawText(IntToStr(Length(ST)) + _lc[I_NET_SLIST_SERVERS], gScreenWidth - 48, motdh - 20 + 3, 255, 255, 255, 255, stdfont, TBasePoint.BP_RIGHTUP);
    end;
  end;

  procedure r_Render_Draw;
  begin
    if gExit = EXIT_QUIT then
      exit;

    r_Draw_Setup(gScreenWidth, gScreenHeight);

    glClearColor(0.0, 0.0, 0.0, 0.0);
    glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);

    glColor4ub(255, 255, 255, 255);
    glEnable(GL_SCISSOR_TEST);
    r_Draw_SetRect(0, 0, gScreenWidth, gScreenHeight);

    //e_LogWritefln('r_render_draw: %sx%s', [gScreenWidth, gScreenHeight]);

    if gGameOn or ((gState in [STATE_FOLD]) and (EndingGameCounter < 255)) then
    begin
      // TODO setup sectator mode
      // TODO setup player hear point

      if (gPlayer1 <> nil) and (gPlayer2 <> nil) then
       begin
        r_Render_DrawPlayerView(0, 0, gScreenWidth, gScreenHeight div 2 - 2, gPlayer1);
        r_Render_DrawPlayerView(0, gScreenHeight div 2 + 2, gScreenWidth, gScreenHeight div 2, gPlayer2);
      end
      else
      begin
        r_Render_DrawPlayerView(0, 0, gScreenWidth, gScreenHeight, gPlayer1);
      end;

      // TODO draw holmes inspector

      // TODO draw messages
      // TODO draw stats (?)
      // TODO draw spectator hud
    end;

    if gPauseMain and gGameOn {$IFDEF ENABLE_MENU}and (g_ActiveWindow = nil){$ENDIF} then
    begin
      // TODO draw pause screen
    end;

    if not gGameOn then
    begin
      case gState of
        STATE_NONE: (* do nothing *) ;
        STATE_MENU: r_Render_DrawBackground(GameWad + ':TEXTURES/TITLE');
        STATE_FOLD:
        begin
          if EndingGameCounter > 0 then
            r_Draw_FillRect(0, 0, gScreenWidth - 1, gScreenHeight - 1, 0, 0, 0, MIN(MAX(255 - EndingGameCounter, 0), 255));
        end;
        STATE_INTERCUSTOM:
        begin
          if gLastMap and (gGameSettings.GameMode = GM_COOP) then
            if EndPicPath <> '' then
              r_Render_DrawBackground(EndPicPath)
            else
              r_Render_DrawBackground(GameWad + ':TEXTURES/' + _lc[I_TEXTURE_ENDPIC])
          else
            r_Render_DrawBackground(GameWad + ':TEXTURES/INTER');
          // TODO draw custom stata
          {$IFDEF ENABLE_MENU}
            if g_ActiveWindow <> nil then
              r_Draw_FillRect(0, 0, gScreenWidth - 1, gScreenHeight - 1, 0, 0, 0, 105);
          {$ENDIF}
        end;
        STATE_INTERSINGLE, STATE_INTERTEXT, STATE_INTERPIC:
        begin
          if EndingGameCounter > 0 then
          begin
            r_Draw_FillRect(0, 0, gScreenWidth - 1, gScreenHeight - 1, 0, 0, 0, MIN(MAX(255 - EndingGameCounter, 0), 255));
          end
          else
          begin
            r_Render_DrawBackground(GameWad + ':TEXTURES/INTER');
            // TODO darw single stats
            {$IFDEF ENABLE_MENU}
              if g_ActiveWindow <> nil then
                r_Draw_FillRect(0, 0, gScreenWidth - 1, gScreenHeight - 1, 0, 0, 0, 105);
            {$ENDIF}
          end;
        end;
        STATE_ENDPIC:
        begin
          if EndPicPath <> '' then
            r_Render_DrawBackground(EndPicPath)
          else
            r_Render_DrawBackground(GameWad + ':TEXTURES/' + _lc[I_TEXTURE_ENDPIC]);
          {$IFDEF ENABLE_MENU}
            if g_ActiveWindow <> nil then
              r_Draw_FillRect(0, 0, gScreenWidth - 1, gScreenHeight - 1, 0, 0, 0, 105);
          {$ENDIF}
        end;
        STATE_SLIST:
        begin
          r_Render_DrawBackground(GameWad + ':TEXTURES/TITLE');
          r_Draw_FillRect(0, 0, gScreenWidth - 1, gScreenHeight - 1, 0, 0, 0, 105);
          r_Render_DrawServerList(slCurrent, slTable);
        end;
      end;
    end;

    {$IFDEF ENABLE_MENU}
      if g_ActiveWindow <> nil then
      begin
        if gGameOn then
          r_Draw_FillRect(0, 0, gScreenWidth - 1, gScreenHeight - 1, 0, 0, 0, 105);
        r_GUI_Draw_Window(g_ActiveWindow);
      end;
    {$ENDIF}

    r_Console_Draw(false);

    // TODO draw holmes interface

    glFlush();
    glFinish();
    sys_Repaint;
  end;

  procedure r_Render_Resize (w, h: Integer);
  begin
    gWinSizeX := w;
    gWinSizeY := h;
    gRC_Width := w;
    gRC_Height := h;
    gScreenWidth := w;
    gScreenHeight := h;
  end;

  procedure r_Render_Apply;
  begin
    {$IFDEF ENABLE_SYSTEM}
      if sys_SetDisplayModeGL(GetInfo()) then
        e_LogWriteln('resolution changed')
      else
        e_LogWriteln('resolution not changed');
      sys_EnableVSync(gVSync)
    {$ENDIF}
  end;

  function r_Render_WriteScreenShot (filename: String): Boolean;
  begin
    Result := False;
  end;

{$IFDEF ENABLE_GIBS}
  function r_Render_GetGibRect (m, id: Integer): TRectWH;
  begin
    result := r_Map_GetGibSize(m, id);
  end;
{$ENDIF}

{$IFDEF ENABLE_GFX}
  procedure r_Render_QueueEffect (AnimType, X, Y: Integer);
  begin
    r_Map_NewGFX(AnimType, X, Y);
  end;
{$ENDIF}

{$IFDEF ENABLE_TOUCH}
  procedure r_Render_GetKeyRect (key: Integer; out x, y, w, h: Integer; out founded: Boolean);
  begin
    founded := False;
  end;
{$ENDIF}

{$IFDEF ENABLE_MENU}
  procedure r_Render_GetControlSize (ctrl: TGUIControl; out w, h: Integer);
  begin
    r_GUI_GetSize(ctrl, w, h);
  end;

  procedure r_Render_GetLogoSize (out w, h: Integer);
  begin
    r_GUI_GetLogoSize(w, h);
  end;

  procedure r_Render_GetMaxFontSize (BigFont: Boolean; out w, h: Integer);
  begin
    r_GUI_GetMaxFontSize(BigFont, w, h);
  end;

  procedure r_Render_GetStringSize (BigFont: Boolean; str: String; out w, h: Integer);
  begin
    r_GUI_GetStringSize(BigFont, str, w, h);
  end;
{$ENDIF}

  procedure r_Render_DrawLoading (force: Boolean);
  begin
    // TODO draw loading screen
  end;

end.