oops!

git-svn-id: svn://svn.icculus.org/quake3/trunk@39 edf5b092-35ff-0310-97b2-ce42778d08ea

1 files changed, 1410 insertions, 0 deletions

diff --git a/code/unix/linux_glimp_sdl.c b/code/unix/linux_glimp_sdl.c
new file mode 100644
index 0000000..3cbc864
--- /dev/null
+++ b/code/unix/linux_glimp_sdl.c
@@ -0,0 +1,1410 @@
+
+#if USE_SDL
+
+/*
+ * SDL implementation for Quake 3: Arena's GPL source release.
+ *
+ * I wrote such a beast originally for Loki's port of Heavy Metal: FAKK2,
+ *  and then wrote it again for the Linux client of Medal of Honor: Allied
+ *  Assault. Third times a charm, so I'm rewriting this once more for the
+ *  GPL release of Quake 3.
+ *
+ * Written by Ryan C. Gordon (icculus@icculus.org). Please refer to
+ *    http://icculus.org/quake3/ for the latest version of this code.
+ *
+ *  Patches and comments are welcome at the above address.
+ *
+ * I cut-and-pasted this from linux_glimp.c, and moved it to SDL line-by-line.
+ *  There is probably some cruft that could be removed here.
+ *
+ * You should define USE_SDL=1 and then add this to the makefile.
+ *  USE_SDL will disable the X11 target.
+ *
+ * !!! FIXME: linux_glimp_sdl.c isn't really "linux" specific.
+ */
+
+/*
+Original copyright on Q3A sources:
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code 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; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code 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 Foobar; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+/*
+** GLW_IMP.C
+**
+** This file contains ALL Linux specific stuff having to do with the
+** OpenGL refresh.  When a port is being made the following functions
+** must be implemented by the port:
+**
+** GLimp_EndFrame
+** GLimp_Init
+** GLimp_Shutdown
+** GLimp_SwitchFullscreen
+** GLimp_SetGamma
+**
+*/
+
+#include "SDL.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <dlfcn.h>
+
+#include "../renderer/tr_local.h"
+#include "../client/client.h"
+#include "linux_local.h" // bk001130
+
+#include "unix_glw.h"
+
+#define	WINDOW_CLASS_NAME	"Quake III: Arena"
+#define	WINDOW_CLASS_NAME_BRIEF	"quake3"
+
+typedef enum
+{
+  RSERR_OK,
+
+  RSERR_INVALID_FULLSCREEN,
+  RSERR_INVALID_MODE,
+
+  RSERR_UNKNOWN
+} rserr_t;
+
+glwstate_t glw_state;
+
+static SDL_Surface *screen = NULL;
+static SDL_Joystick *stick = NULL;
+
+static qboolean mouse_avail = qfalse;
+static qboolean mouse_active = qfalse;
+static qboolean sdlrepeatenabled = qfalse;
+
+static cvar_t *in_mouse;
+cvar_t *in_subframe;
+cvar_t *in_nograb; // this is strictly for developers
+
+// bk001130 - from cvs1.17 (mkv), but not static
+cvar_t   *in_joystick      = NULL;
+cvar_t   *in_joystickDebug = NULL;
+cvar_t   *joy_threshold    = NULL;
+
+cvar_t  *r_allowSoftwareGL;   // don't abort out if the pixelformat claims software
+cvar_t  *r_previousglDriver;
+
+static int win_x, win_y;
+
+static int num_vidmodes;
+
+static int mouse_accel_numerator;
+static int mouse_accel_denominator;
+static int mouse_threshold;    
+
+/*
+* Find the first occurrence of find in s.
+*/
+// bk001130 - from cvs1.17 (mkv), const
+// bk001130 - made first argument const
+static const char *Q_stristr( const char *s, const char *find)
+{
+  register char c, sc;
+  register size_t len;
+
+  if ((c = *find++) != 0)
+  {
+    if (c >= 'a' && c <= 'z')
+    {
+      c -= ('a' - 'A');
+    }
+    len = strlen(find);
+    do
+    {
+      do
+      {
+        if ((sc = *s++) == 0)
+          return NULL;
+        if (sc >= 'a' && sc <= 'z')
+        {
+          sc -= ('a' - 'A');
+        }
+      } while (sc != c);
+    } while (Q_stricmpn(s, find, len) != 0);
+    s--;
+  }
+  return s;
+}
+
+//#define KBD_DBG
+
+static const char *XLateKey(SDL_keysym *keysym, int *key)
+{
+  static char buf[2] = { '\0', '\0' };
+  *key = 0;
+
+  // these happen to match the ASCII chars.
+  if ( ((keysym->sym >= SDLK_a) && (keysym->sym <= SDLK_z)) ||
+       ((keysym->sym >= SDLK_0) && (keysym->sym <= SDLK_9)) )
+  {
+     *key = (int) keysym->sym;
+     buf[0] = (char) *key;
+     return buf;
+  }
+
+  if (keysym->unicode == '~')  // the console.
+  {
+    buf[0] = *key = '~';
+    return buf;
+  }
+
+  buf[0] = '\0';
+
+  switch (keysym->sym)
+  {
+  case SDLK_PAGEUP: *key = K_PGUP; break;
+  case SDLK_KP9:  *key = K_KP_PGUP; break;
+  case SDLK_PAGEDOWN: *key = K_PGDN; break;
+  case SDLK_KP3: *key = K_KP_PGDN; break;
+  case SDLK_KP7: *key = K_KP_HOME; break;
+  case SDLK_HOME:  *key = K_HOME; break;
+  case SDLK_KP1:   *key = K_KP_END; break;
+  case SDLK_END:   *key = K_END; break;
+  case SDLK_KP4: *key = K_KP_LEFTARROW; break;
+  case SDLK_LEFT:  *key = K_LEFTARROW; break;
+  case SDLK_KP6: *key = K_KP_RIGHTARROW; break;
+  case SDLK_RIGHT:  *key = K_RIGHTARROW;    break;
+  case SDLK_KP2:    *key = K_KP_DOWNARROW; break;
+  case SDLK_DOWN:  *key = K_DOWNARROW; break;
+  case SDLK_KP8:    *key = K_KP_UPARROW; break;
+  case SDLK_UP:    *key = K_UPARROW;   break;
+  case SDLK_ESCAPE: *key = K_ESCAPE;    break;
+  case SDLK_KP_ENTER: *key = K_KP_ENTER;  break;
+  case SDLK_RETURN: *key = K_ENTER;    break;
+  case SDLK_TAB:    *key = K_TAB;      break;
+  case SDLK_F1:    *key = K_F1;       break;
+  case SDLK_F2:    *key = K_F2;       break;
+  case SDLK_F3:    *key = K_F3;       break;
+  case SDLK_F4:    *key = K_F4;       break;
+  case SDLK_F5:    *key = K_F5;       break;
+  case SDLK_F6:    *key = K_F6;       break;
+  case SDLK_F7:    *key = K_F7;       break;
+  case SDLK_F8:    *key = K_F8;       break;
+  case SDLK_F9:    *key = K_F9;       break;
+  case SDLK_F10:    *key = K_F10;      break;
+  case SDLK_F11:    *key = K_F11;      break;
+  case SDLK_F12:    *key = K_F12;      break;
+
+    // bk001206 - from Ryan's Fakk2 
+    //case SDLK_BackSpace: *key = 8; break; // ctrl-h
+  case SDLK_BACKSPACE: *key = K_BACKSPACE; break; // ctrl-h
+  case SDLK_KP_PERIOD: *key = K_KP_DEL; break;
+  case SDLK_DELETE: *key = K_DEL; break;
+  case SDLK_PAUSE:  *key = K_PAUSE;    break;
+
+  case SDLK_LSHIFT:
+  case SDLK_RSHIFT:  *key = K_SHIFT;   break;
+
+  case SDLK_LCTRL:
+  case SDLK_RCTRL:  *key = K_CTRL;  break;
+
+  case SDLK_RMETA:
+  case SDLK_LMETA:
+  case SDLK_RALT:
+  case SDLK_LALT: *key = K_ALT;     break;
+
+  case SDLK_KP5: *key = K_KP_5;  break;
+  case SDLK_INSERT:   *key = K_INS; break;
+  case SDLK_KP0: *key = K_KP_INS; break;
+  case SDLK_KP_MULTIPLY: *key = '*'; break;
+  case SDLK_KP_PLUS:  *key = K_KP_PLUS; break;
+  case SDLK_KP_MINUS: *key = K_KP_MINUS; break;
+  case SDLK_KP_DIVIDE: *key = K_KP_SLASH; break;
+  case SDLK_SPACE: *key = K_SPACE; break;
+
+  default:
+    if (keysym->unicode <= 255)  // maps to ASCII?
+    {
+        char ch = (char) keysym->unicode;
+        if (ch >= 'A' && ch <= 'Z')
+            ch = ch - 'A' + 'a';
+        // if ctrl is pressed, the keys are not between 'A' and 'Z', for instance ctrl-z == 26 ^Z ^C etc.
+        // see https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=19
+        else if (ch >= 1 && ch <= 26)
+            ch = ch + 'a' - 1;
+
+        buf[0] = ch;
+        return buf;
+    }
+    break;
+  } 
+
+  return NULL;
+}
+
+static void install_grabs(void)
+{
+    SDL_WM_GrabInput(SDL_GRAB_ON);
+}
+
+static void uninstall_grabs(void)
+{
+    SDL_WM_GrabInput(SDL_GRAB_OFF);
+}
+
+static void HandleEvents(void)
+{
+  const int t = 0;  // always just use the current time.
+  SDL_Event e;
+  const char *p = NULL;
+  int key = 0;
+  int b = 0;
+
+  if (screen == NULL)
+    return;  // no SDL context.
+
+  if (cls.keyCatchers == 0)
+  {
+    if (sdlrepeatenabled)
+    {
+        SDL_EnableKeyRepeat(0, 0);
+        sdlrepeatenabled = qfalse;
+    }
+  }
+  else
+  {
+    if (!sdlrepeatenabled)
+    {
+        SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
+        sdlrepeatenabled = qtrue;
+    }
+  }
+
+  while (SDL_PollEvent(&e))
+  {
+    switch (e.type)
+    {
+    case SDL_KEYDOWN:
+      p = XLateKey(&e.key.keysym, &key);
+      if (key)
+      {
+        Sys_QueEvent( t, SE_KEY, key, qtrue, 0, NULL );
+      }
+      if (p)
+      {
+        while (*p)
+        {
+          Sys_QueEvent( t, SE_CHAR, *p++, 0, 0, NULL );
+        }
+      }
+      break;
+
+    case SDL_KEYUP:
+      XLateKey(&e.key.keysym, &key);
+      Sys_QueEvent( t, SE_KEY, key, qfalse, 0, NULL );
+      break;
+
+    case SDL_MOUSEMOTION:
+      if (mouse_active)
+        Sys_QueEvent( t, SE_MOUSE, e.motion.xrel, e.motion.yrel, 0, NULL );
+      break;
+
+    case SDL_MOUSEBUTTONDOWN:
+      if (e.button.button == 4)
+      {
+        Sys_QueEvent( t, SE_KEY, K_MWHEELUP, qtrue, 0, NULL );
+      } else if (e.button.button == 5)
+      {
+        Sys_QueEvent( t, SE_KEY, K_MWHEELDOWN, qtrue, 0, NULL );
+      } else
+      {
+        // NOTE TTimo there seems to be a weird mapping for K_MOUSE1 K_MOUSE2 K_MOUSE3 ..
+        b=-1;
+        if (e.button.button == 1)
+        {
+          b = 0; // K_MOUSE1
+        } else if (e.button.button == 2)
+        {
+          b = 2; // K_MOUSE3
+        } else if (e.button.button == 3)
+        {
+          b = 1; // K_MOUSE2
+        } else if (e.button.button == 6)
+        {
+          b = 3; // K_MOUSE4
+        } else if (e.button.button == 7)
+        {
+          b = 4; // K_MOUSE5
+        };
+
+        Sys_QueEvent( t, SE_KEY, K_MOUSE1 + b, qtrue, 0, NULL );
+      }
+      break;
+
+    case SDL_MOUSEBUTTONUP:
+      if (e.button.button == 4)
+      {
+        Sys_QueEvent( t, SE_KEY, K_MWHEELUP, qfalse, 0, NULL );
+      } else if (e.button.button == 5)
+      {
+        Sys_QueEvent( t, SE_KEY, K_MWHEELDOWN, qfalse, 0, NULL );
+      } else
+      {
+        b=-1;
+        if (e.button.button == 1)
+        {
+          b = 0;
+        } else if (e.button.button == 2)
+        {
+          b = 2;
+        } else if (e.button.button == 3)
+        {
+          b = 1;
+        } else if (e.button.button == 6)
+        {
+          b = 3; // K_MOUSE4
+        } else if (e.button.button == 7)
+        {
+          b = 4; // K_MOUSE5
+        };
+        Sys_QueEvent( t, SE_KEY, K_MOUSE1 + b, qfalse, 0, NULL );
+      }
+      break;
+    }
+  }
+}
+
+// NOTE TTimo for the tty console input, we didn't rely on those .. 
+//   it's not very surprising actually cause they are not used otherwise
+void KBD_Init(void)
+{
+}
+
+void KBD_Close(void)
+{
+}
+
+void IN_ActivateMouse( void ) 
+{
+  if (!mouse_avail || !screen)
+    return;
+
+  if (!mouse_active)
+  {
+    if (!in_nograb->value)
+      install_grabs();
+    mouse_active = qtrue;
+  }
+}
+
+void IN_DeactivateMouse( void ) 
+{
+  if (!mouse_avail || !screen)
+    return;
+
+  if (mouse_active)
+  {
+    if (!in_nograb->value)
+      uninstall_grabs();
+    mouse_active = qfalse;
+  }
+}
+/*****************************************************************************/
+
+/*
+** GLimp_SetGamma
+**
+** This routine should only be called if glConfig.deviceSupportsGamma is TRUE
+*/
+void GLimp_SetGamma( unsigned char red[256], unsigned char green[256], unsigned char blue[256] )
+{
+  // NOTE TTimo we get the gamma value from cvar, because we can't work with the s_gammatable
+  //   the API wasn't changed to avoid breaking other OSes
+  float g = Cvar_Get("r_gamma", "1.0", 0)->value;
+  SDL_SetGamma(g, g, g);
+}
+
+/*
+** GLimp_Shutdown
+**
+** This routine does all OS specific shutdown procedures for the OpenGL
+** subsystem.  Under OpenGL this means NULLing out the current DC and
+** HGLRC, deleting the rendering context, and releasing the DC acquired
+** for the window.  The state structure is also nulled out.
+**
+*/
+void GLimp_Shutdown( void )
+{
+  IN_DeactivateMouse();
+
+  if (stick)
+  {
+    SDL_JoystickClose(stick);
+    stick = NULL;
+  }
+
+  SDL_Quit();
+  screen = NULL;
+
+  memset( &glConfig, 0, sizeof( glConfig ) );
+  memset( &glState, 0, sizeof( glState ) );
+
+  QGL_Shutdown();
+}
+
+/*
+** GLimp_LogComment
+*/
+void GLimp_LogComment( char *comment ) 
+{
+  if ( glw_state.log_fp )
+  {
+    fprintf( glw_state.log_fp, "%s", comment );
+  }
+}
+
+/*
+** GLW_StartDriverAndSetMode
+*/
+// bk001204 - prototype needed
+static int GLW_SetMode( const char *drivername, int mode, qboolean fullscreen );
+static qboolean GLW_StartDriverAndSetMode( const char *drivername, 
+                                           int mode, 
+                                           qboolean fullscreen )
+{
+  rserr_t err;
+
+  if (!SDL_WasInit(SDL_INIT_VIDEO))
+  {
+    if (SDL_Init(SDL_INIT_VIDEO) == -1)
+    {
+		ri.Printf( PRINT_ALL, "SDL_Init(SDL_INIT_VIDEO) failed: %s\n", SDL_GetError());
+        return qfalse;
+    }
+  }
+
+  // don't ever bother going into fullscreen with a voodoo card
+#if 1	// JDC: I reenabled this
+  if ( Q_stristr( drivername, "Voodoo" ) )
+  {
+    ri.Cvar_Set( "r_fullscreen", "0" );
+    r_fullscreen->modified = qfalse;
+    fullscreen = qfalse;
+  }
+#endif
+	
+	if (fullscreen && in_nograb->value)
+	{
+		ri.Printf( PRINT_ALL, "Fullscreen not allowed with in_nograb 1\n");
+    ri.Cvar_Set( "r_fullscreen", "0" );
+    r_fullscreen->modified = qfalse;
+    fullscreen = qfalse;		
+	}
+
+  err = GLW_SetMode( drivername, mode, fullscreen );
+
+  switch ( err )
+  {
+  case RSERR_INVALID_FULLSCREEN:
+    ri.Printf( PRINT_ALL, "...WARNING: fullscreen unavailable in this mode\n" );
+    return qfalse;
+  case RSERR_INVALID_MODE:
+    ri.Printf( PRINT_ALL, "...WARNING: could not set the given mode (%d)\n", mode );
+    return qfalse;
+  default:
+    break;
+  }
+  return qtrue;
+}
+
+/*
+** GLW_SetMode
+*/
+static int GLW_SetMode( const char *drivername, int mode, qboolean fullscreen )
+{
+  const char*   glstring; // bk001130 - from cvs1.17 (mkv)
+  int sdlcolorbits = 4;
+  int colorbits, depthbits, stencilbits;
+  int tcolorbits, tdepthbits, tstencilbits;
+  int i = 0;
+  SDL_Surface *vidscreen = NULL;
+
+  ri.Printf( PRINT_ALL, "Initializing OpenGL display\n");
+
+  ri.Printf (PRINT_ALL, "...setting mode %d:", mode );
+
+  if ( !R_GetModeInfo( &glConfig.vidWidth, &glConfig.vidHeight, &glConfig.windowAspect, mode ) )
+  {
+    ri.Printf( PRINT_ALL, " invalid mode\n" );
+    return RSERR_INVALID_MODE;
+  }
+  ri.Printf( PRINT_ALL, " %d %d\n", glConfig.vidWidth, glConfig.vidHeight);
+
+  Uint32 flags = SDL_OPENGL;
+  if (fullscreen)
+    flags |= SDL_FULLSCREEN;
+
+  if (!r_colorbits->value)
+    colorbits = 24;
+  else
+    colorbits = r_colorbits->value;
+
+  if ( !Q_stricmp( r_glDriver->string, _3DFX_DRIVER_NAME ) )
+    colorbits = 16;
+
+  if (!r_depthbits->value)
+    depthbits = 24;
+  else
+    depthbits = r_depthbits->value;
+  stencilbits = r_stencilbits->value;
+
+  for (i = 0; i < 16; i++)
+  {
+    // 0 - default
+    // 1 - minus colorbits
+    // 2 - minus depthbits
+    // 3 - minus stencil
+    if ((i % 4) == 0 && i)
+    {
+      // one pass, reduce
+      switch (i / 4)
+      {
+      case 2 :
+        if (colorbits == 24)
+          colorbits = 16;
+        break;
+      case 1 :
+        if (depthbits == 24)
+          depthbits = 16;
+        else if (depthbits == 16)
+          depthbits = 8;
+      case 3 :
+        if (stencilbits == 24)
+          stencilbits = 16;
+        else if (stencilbits == 16)
+          stencilbits = 8;
+      }
+    }
+
+    tcolorbits = colorbits;
+    tdepthbits = depthbits;
+    tstencilbits = stencilbits;
+
+    if ((i % 4) == 3)
+    { // reduce colorbits
+      if (tcolorbits == 24)
+        tcolorbits = 16;
+    }
+
+    if ((i % 4) == 2)
+    { // reduce depthbits
+      if (tdepthbits == 24)
+        tdepthbits = 16;
+      else if (tdepthbits == 16)
+        tdepthbits = 8;
+    }
+
+    if ((i % 4) == 1)
+    { // reduce stencilbits
+      if (tstencilbits == 24)
+        tstencilbits = 16;
+      else if (tstencilbits == 16)
+        tstencilbits = 8;
+      else
+        tstencilbits = 0;
+    }
+
+    if (tcolorbits == 24)
+        sdlcolorbits = 8;
+
+    SDL_GL_SetAttribute( SDL_GL_RED_SIZE, sdlcolorbits );
+    SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, sdlcolorbits );
+    SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, sdlcolorbits );
+    SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, tdepthbits );
+    SDL_GL_SetAttribute( SDL_GL_STENCIL_SIZE, tstencilbits );
+    SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
+
+    SDL_WM_SetCaption(WINDOW_CLASS_NAME, WINDOW_CLASS_NAME_BRIEF);
+    SDL_ShowCursor(0);
+    SDL_EnableUNICODE(1);
+    SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
+    sdlrepeatenabled = qtrue;
+
+    if (!(vidscreen = SDL_SetVideoMode(glConfig.vidWidth, glConfig.vidHeight, colorbits, flags)))
+    {
+        fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError());
+        continue;
+    }
+
+    ri.Printf( PRINT_ALL, "Using %d/%d/%d Color bits, %d depth, %d stencil display.\n",
+               sdlcolorbits, sdlcolorbits, sdlcolorbits,
+               tdepthbits, tstencilbits);
+
+    glConfig.colorBits = tcolorbits;
+    glConfig.depthBits = tdepthbits;
+    glConfig.stencilBits = tstencilbits;
+    break;
+  }
+
+  if (!vidscreen)
+  {
+    ri.Printf( PRINT_ALL, "Couldn't get a visual\n" );
+    return RSERR_INVALID_MODE;
+  }
+
+  screen = vidscreen;
+
+  // bk001130 - from cvs1.17 (mkv)
+  glstring = qglGetString (GL_RENDERER);
+  ri.Printf( PRINT_ALL, "GL_RENDERER: %s\n", glstring );
+
+  // bk010122 - new software token (Indirect)
+  if ( !Q_stricmp( glstring, "Mesa X11")
+       || !Q_stricmp( glstring, "Mesa GLX Indirect") )
+  {
+    if ( !r_allowSoftwareGL->integer )
+    {
+      ri.Printf( PRINT_ALL, "\n\n***********************************************************\n" );
+      ri.Printf( PRINT_ALL, " You are using software Mesa (no hardware acceleration)!   \n" );
+      ri.Printf( PRINT_ALL, " Driver DLL used: %s\n", drivername ); 
+      ri.Printf( PRINT_ALL, " If this is intentional, add\n" );
+      ri.Printf( PRINT_ALL, "       \"+set r_allowSoftwareGL 1\"\n" );
+      ri.Printf( PRINT_ALL, " to the command line when starting the game.\n" );
+      ri.Printf( PRINT_ALL, "***********************************************************\n");
+      GLimp_Shutdown( );
+      return RSERR_INVALID_MODE;
+    } else
+    {
+      ri.Printf( PRINT_ALL, "...using software Mesa (r_allowSoftwareGL==1).\n" );
+    }
+  }
+
+  return RSERR_OK;
+}
+
+/*
+** GLW_InitExtensions
+*/
+static void GLW_InitExtensions( void )
+{
+  if ( !r_allowExtensions->integer )
+  {
+    ri.Printf( PRINT_ALL, "*** IGNORING OPENGL EXTENSIONS ***\n" );
+    return;
+  }
+
+  ri.Printf( PRINT_ALL, "Initializing OpenGL extensions\n" );
+
+  // GL_S3_s3tc
+  if ( Q_stristr( glConfig.extensions_string, "GL_S3_s3tc" ) )
+  {
+    if ( r_ext_compressed_textures->value )
+    {
+      glConfig.textureCompression = TC_S3TC;
+      ri.Printf( PRINT_ALL, "...using GL_S3_s3tc\n" );
+    } else
+    {
+      glConfig.textureCompression = TC_NONE;
+      ri.Printf( PRINT_ALL, "...ignoring GL_S3_s3tc\n" );
+    }
+  } else
+  {
+    glConfig.textureCompression = TC_NONE;
+    ri.Printf( PRINT_ALL, "...GL_S3_s3tc not found\n" );
+  }
+
+  // GL_EXT_texture_env_add
+  glConfig.textureEnvAddAvailable = qfalse;
+  if ( Q_stristr( glConfig.extensions_string, "EXT_texture_env_add" ) )
+  {
+    if ( r_ext_texture_env_add->integer )
+    {
+      glConfig.textureEnvAddAvailable = qtrue;
+      ri.Printf( PRINT_ALL, "...using GL_EXT_texture_env_add\n" );
+    } else
+    {
+      glConfig.textureEnvAddAvailable = qfalse;
+      ri.Printf( PRINT_ALL, "...ignoring GL_EXT_texture_env_add\n" );
+    }
+  } else
+  {
+    ri.Printf( PRINT_ALL, "...GL_EXT_texture_env_add not found\n" );
+  }
+
+  // GL_ARB_multitexture
+  qglMultiTexCoord2fARB = NULL;
+  qglActiveTextureARB = NULL;
+  qglClientActiveTextureARB = NULL;
+  if ( Q_stristr( glConfig.extensions_string, "GL_ARB_multitexture" ) )
+  {
+    // !!! FIXME: Use SDL_GL_GetProcAddress instead?
+    if ( r_ext_multitexture->value )
+    {
+      qglMultiTexCoord2fARB = ( PFNGLMULTITEXCOORD2FARBPROC ) dlsym( glw_state.OpenGLLib, "glMultiTexCoord2fARB" );
+      qglActiveTextureARB = ( PFNGLACTIVETEXTUREARBPROC ) dlsym( glw_state.OpenGLLib, "glActiveTextureARB" );
+      qglClientActiveTextureARB = ( PFNGLCLIENTACTIVETEXTUREARBPROC ) dlsym( glw_state.OpenGLLib, "glClientActiveTextureARB" );
+
+      if ( qglActiveTextureARB )
+      {
+        qglGetIntegerv( GL_MAX_ACTIVE_TEXTURES_ARB, &glConfig.maxActiveTextures );
+
+        if ( glConfig.maxActiveTextures > 1 )
+        {
+          ri.Printf( PRINT_ALL, "...using GL_ARB_multitexture\n" );
+        } else
+        {
+          qglMultiTexCoord2fARB = NULL;
+          qglActiveTextureARB = NULL;
+          qglClientActiveTextureARB = NULL;
+          ri.Printf( PRINT_ALL, "...not using GL_ARB_multitexture, < 2 texture units\n" );
+        }
+      }
+    } else
+    {
+      ri.Printf( PRINT_ALL, "...ignoring GL_ARB_multitexture\n" );
+    }
+  } else
+  {
+    ri.Printf( PRINT_ALL, "...GL_ARB_multitexture not found\n" );
+  }
+
+  // GL_EXT_compiled_vertex_array
+  if ( Q_stristr( glConfig.extensions_string, "GL_EXT_compiled_vertex_array" ) )
+  {
+    if ( r_ext_compiled_vertex_array->value )
+    {
+      ri.Printf( PRINT_ALL, "...using GL_EXT_compiled_vertex_array\n" );
+      qglLockArraysEXT = ( void ( APIENTRY * )( int, int ) ) dlsym( glw_state.OpenGLLib, "glLockArraysEXT" );
+      qglUnlockArraysEXT = ( void ( APIENTRY * )( void ) ) dlsym( glw_state.OpenGLLib, "glUnlockArraysEXT" );
+      if (!qglLockArraysEXT || !qglUnlockArraysEXT)
+      {
+        ri.Error (ERR_FATAL, "bad getprocaddress");
+      }
+    } else
+    {
+      ri.Printf( PRINT_ALL, "...ignoring GL_EXT_compiled_vertex_array\n" );
+    }
+  } else
+  {
+    ri.Printf( PRINT_ALL, "...GL_EXT_compiled_vertex_array not found\n" );
+  }
+
+}
+
+static void GLW_InitGamma()
+{
+    glConfig.deviceSupportsGamma = qtrue;
+}
+
+/*
+** GLW_LoadOpenGL
+**
+** GLimp_win.c internal function that that attempts to load and use 
+** a specific OpenGL DLL.
+*/
+static qboolean GLW_LoadOpenGL( const char *name )
+{
+  qboolean fullscreen;
+
+  ri.Printf( PRINT_ALL, "...loading %s: ", name );
+
+  // disable the 3Dfx splash screen and set gamma
+  // we do this all the time, but it shouldn't hurt anything
+  // on non-3Dfx stuff
+  putenv("FX_GLIDE_NO_SPLASH=0");
+
+  // Mesa VooDoo hacks
+  putenv("MESA_GLX_FX=fullscreen\n");
+
+  // load the QGL layer
+  if ( QGL_Init( name ) )
+  {
+    fullscreen = r_fullscreen->integer;
+
+    // create the window and set up the context
+    if ( !GLW_StartDriverAndSetMode( name, r_mode->integer, fullscreen ) )
+    {
+      if (r_mode->integer != 3)
+      {
+        if ( !GLW_StartDriverAndSetMode( name, 3, fullscreen ) )
+        {
+          goto fail;
+        }
+      } else
+        goto fail;
+    }
+
+    return qtrue;
+  } else
+  {
+    ri.Printf( PRINT_ALL, "failed\n" );
+  }
+  fail:
+
+  QGL_Shutdown();
+
+  return qfalse;
+}
+
+
+/*
+** GLimp_Init
+**
+** This routine is responsible for initializing the OS specific portions
+** of OpenGL.  
+*/
+void GLimp_Init( void )
+{
+  qboolean attemptedlibGL = qfalse;
+  qboolean attempted3Dfx = qfalse;
+  qboolean success = qfalse;
+  char  buf[1024];
+  cvar_t *lastValidRenderer = ri.Cvar_Get( "r_lastValidRenderer", "(uninitialized)", CVAR_ARCHIVE );
+
+  r_allowSoftwareGL = ri.Cvar_Get( "r_allowSoftwareGL", "0", CVAR_LATCH );
+
+  r_previousglDriver = ri.Cvar_Get( "r_previousglDriver", "", CVAR_ROM );
+
+  InitSig();
+
+  // Hack here so that if the UI 
+  if ( *r_previousglDriver->string )
+  {
+    // The UI changed it on us, hack it back
+    // This means the renderer can't be changed on the fly
+    ri.Cvar_Set( "r_glDriver", r_previousglDriver->string );
+  }
+
+  //
+  // load and initialize the specific OpenGL driver
+  //
+  if ( !GLW_LoadOpenGL( r_glDriver->string ) )
+  {
+    if ( !Q_stricmp( r_glDriver->string, OPENGL_DRIVER_NAME ) )
+    {
+      attemptedlibGL = qtrue;
+    } else if ( !Q_stricmp( r_glDriver->string, _3DFX_DRIVER_NAME ) )
+    {
+      attempted3Dfx = qtrue;
+    }
+
+    #if 0
+    // TTimo
+    // https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=455
+    // old legacy load code, was confusing people who had a bad OpenGL setup
+    if ( !attempted3Dfx && !success )
+    {
+      attempted3Dfx = qtrue;
+      if ( GLW_LoadOpenGL( _3DFX_DRIVER_NAME ) )
+      {
+        ri.Cvar_Set( "r_glDriver", _3DFX_DRIVER_NAME );
+        r_glDriver->modified = qfalse;
+        success = qtrue;
+      }
+    }
+    #endif
+
+    // try ICD before trying 3Dfx standalone driver
+    if ( !attemptedlibGL && !success )
+    {
+      attemptedlibGL = qtrue;
+      if ( GLW_LoadOpenGL( OPENGL_DRIVER_NAME ) )
+      {
+        ri.Cvar_Set( "r_glDriver", OPENGL_DRIVER_NAME );
+        r_glDriver->modified = qfalse;
+        success = qtrue;
+      }
+    }
+
+    if (!success)
+      ri.Error( ERR_FATAL, "GLimp_Init() - could not load OpenGL subsystem\n" );
+
+  }
+
+  // Save it in case the UI stomps it
+  ri.Cvar_Set( "r_previousglDriver", r_glDriver->string );
+
+  // This values force the UI to disable driver selection
+  glConfig.driverType = GLDRV_ICD;
+  glConfig.hardwareType = GLHW_GENERIC;
+
+  // get our config strings
+  Q_strncpyz( glConfig.vendor_string, qglGetString (GL_VENDOR), sizeof( glConfig.vendor_string ) );
+  Q_strncpyz( glConfig.renderer_string, qglGetString (GL_RENDERER), sizeof( glConfig.renderer_string ) );
+  if (*glConfig.renderer_string && glConfig.renderer_string[strlen(glConfig.renderer_string) - 1] == '\n')
+    glConfig.renderer_string[strlen(glConfig.renderer_string) - 1] = 0;
+  Q_strncpyz( glConfig.version_string, qglGetString (GL_VERSION), sizeof( glConfig.version_string ) );
+  Q_strncpyz( glConfig.extensions_string, qglGetString (GL_EXTENSIONS), sizeof( glConfig.extensions_string ) );
+
+  //
+  // chipset specific configuration
+  //
+  strcpy( buf, glConfig.renderer_string );
+  strlwr( buf );
+
+  //
+  // NOTE: if changing cvars, do it within this block.  This allows them
+  // to be overridden when testing driver fixes, etc. but only sets
+  // them to their default state when the hardware is first installed/run.
+  //
+  if ( Q_stricmp( lastValidRenderer->string, glConfig.renderer_string ) )
+  {
+    glConfig.hardwareType = GLHW_GENERIC;
+
+    ri.Cvar_Set( "r_textureMode", "GL_LINEAR_MIPMAP_NEAREST" );
+
+    // VOODOO GRAPHICS w/ 2MB
+    if ( Q_stristr( buf, "voodoo graphics/1 tmu/2 mb" ) )
+    {
+      ri.Cvar_Set( "r_picmip", "2" );
+      ri.Cvar_Get( "r_picmip", "1", CVAR_ARCHIVE | CVAR_LATCH );
+    } else
+    {
+      ri.Cvar_Set( "r_picmip", "1" );
+
+      if ( Q_stristr( buf, "rage 128" ) || Q_stristr( buf, "rage128" ) )
+      {
+        ri.Cvar_Set( "r_finish", "0" );
+      }
+      // Savage3D and Savage4 should always have trilinear enabled
+      else if ( Q_stristr( buf, "savage3d" ) || Q_stristr( buf, "s3 savage4" ) )
+      {
+        ri.Cvar_Set( "r_texturemode", "GL_LINEAR_MIPMAP_LINEAR" );
+      }
+    }
+  }
+
+  //
+  // this is where hardware specific workarounds that should be
+  // detected/initialized every startup should go.
+  //
+  if ( Q_stristr( buf, "banshee" ) || Q_stristr( buf, "Voodoo_Graphics" ) )
+  {
+    glConfig.hardwareType = GLHW_3DFX_2D3D;
+  } else if ( Q_stristr( buf, "rage pro" ) || Q_stristr( buf, "RagePro" ) )
+  {
+    glConfig.hardwareType = GLHW_RAGEPRO;
+  } else if ( Q_stristr( buf, "permedia2" ) )
+  {
+    glConfig.hardwareType = GLHW_PERMEDIA2;
+  } else if ( Q_stristr( buf, "riva 128" ) )
+  {
+    glConfig.hardwareType = GLHW_RIVA128;
+  } else if ( Q_stristr( buf, "riva tnt " ) )
+  {
+  }
+
+  ri.Cvar_Set( "r_lastValidRenderer", glConfig.renderer_string );
+
+  // initialize extensions
+  GLW_InitExtensions();
+  GLW_InitGamma();
+
+  InitSig(); // not clear why this is at begin & end of function
+
+  return;
+}
+
+
+/*
+** GLimp_EndFrame
+** 
+** Responsible for doing a swapbuffers and possibly for other stuff
+** as yet to be determined.  Probably better not to make this a GLimp
+** function and instead do a call to GLimp_SwapBuffers.
+*/
+void GLimp_EndFrame (void)
+{
+  // don't flip if drawing to front buffer
+  if ( stricmp( r_drawBuffer->string, "GL_FRONT" ) != 0 )
+  {
+    SDL_GL_SwapBuffers();
+  }
+
+  // check logging
+  QGL_EnableLogging( (qboolean)r_logFile->integer ); // bk001205 - was ->value
+}
+
+// Figure out something to do with this...
+#if 0 //def SMP
+/*
+===========================================================
+
+SMP acceleration
+
+===========================================================
+*/
+
+static pthread_mutex_t	smpMutex = PTHREAD_MUTEX_INITIALIZER;
+
+static pthread_cond_t		renderCommandsEvent = PTHREAD_COND_INITIALIZER;
+static pthread_cond_t		renderCompletedEvent = PTHREAD_COND_INITIALIZER;
+
+static void (*glimpRenderThread)( void );
+
+static void *GLimp_RenderThreadWrapper( void *arg )
+{
+	Com_Printf( "Render thread starting\n" );
+
+  glimpRenderThread();
+
+	qglXMakeCurrent( dpy, None, NULL );
+
+	Com_Printf( "Render thread terminating\n" );
+
+	return arg;
+}
+
+qboolean GLimp_SpawnRenderThread( void (*function)( void ) )
+{
+	pthread_t renderThread;
+	int ret;
+
+	pthread_mutex_init( &smpMutex, NULL );
+
+	pthread_cond_init( &renderCommandsEvent, NULL );
+	pthread_cond_init( &renderCompletedEvent, NULL );
+
+  glimpRenderThread = function;
+
+	ret = pthread_create( &renderThread,
+						  NULL,			// attributes
+						  GLimp_RenderThreadWrapper,
+						  NULL );		// argument
+	if ( ret ) {
+		ri.Printf( PRINT_ALL, "pthread_create returned %d: %s", ret, strerror( ret ) );
+    return qfalse;
+	} else {
+		ret = pthread_detach( renderThread );
+		if ( ret ) {
+			ri.Printf( PRINT_ALL, "pthread_detach returned %d: %s", ret, strerror( ret ) );
+		}
+  }
+
+  return qtrue;
+}
+
+static volatile void    *smpData = NULL;
+static volatile qboolean smpDataReady;
+
+void *GLimp_RendererSleep( void )
+{
+	void  *data;
+
+	qglXMakeCurrent( dpy, None, NULL );
+
+	pthread_mutex_lock( &smpMutex );
+	{
+		smpData = NULL;
+		smpDataReady = qfalse;
+
+		// after this, the front end can exit GLimp_FrontEndSleep
+		pthread_cond_signal( &renderCompletedEvent );
+
+		while ( !smpDataReady ) {
+			pthread_cond_wait( &renderCommandsEvent, &smpMutex );
+		}
+
+		data = (void *)smpData;
+	}
+	pthread_mutex_unlock( &smpMutex );
+
+	qglXMakeCurrent( dpy, win, ctx );
+
+  return data;
+}
+
+void GLimp_FrontEndSleep( void )
+{
+	pthread_mutex_lock( &smpMutex );
+	{
+		while ( smpData ) {
+			pthread_cond_wait( &renderCompletedEvent, &smpMutex );
+		}
+	}
+	pthread_mutex_unlock( &smpMutex );
+
+	qglXMakeCurrent( dpy, win, ctx );
+}
+
+void GLimp_WakeRenderer( void *data )
+{
+	qglXMakeCurrent( dpy, None, NULL );
+
+	pthread_mutex_lock( &smpMutex );
+	{
+		assert( smpData == NULL );
+		smpData = data;
+		smpDataReady = qtrue;
+
+		// after this, the renderer can continue through GLimp_RendererSleep
+		pthread_cond_signal( &renderCommandsEvent );
+	}
+	pthread_mutex_unlock( &smpMutex );
+}
+
+#else
+
+void GLimp_RenderThreadWrapper( void *stub ) {}
+qboolean GLimp_SpawnRenderThread( void (*function)( void ) ) {
+	ri.Printf( PRINT_WARNING, "ERROR: SMP support was disabled at compile time\n");
+  return qfalse;
+}
+void *GLimp_RendererSleep( void ) {
+  return NULL;
+}
+void GLimp_FrontEndSleep( void ) {}
+void GLimp_WakeRenderer( void *data ) {}
+
+#endif
+
+/*****************************************************************************/
+/* MOUSE                                                                     */
+/*****************************************************************************/
+
+void IN_Init(void) {
+	Com_Printf ("\n------- Input Initialization -------\n");
+  // mouse variables
+  in_mouse = Cvar_Get ("in_mouse", "1", CVAR_ARCHIVE);
+	
+	// turn on-off sub-frame timing of X events
+	in_subframe = Cvar_Get ("in_subframe", "1", CVAR_ARCHIVE);
+	
+	// developer feature, allows to break without loosing mouse pointer
+	in_nograb = Cvar_Get ("in_nograb", "0", 0);
+
+  // bk001130 - from cvs.17 (mkv), joystick variables
+  in_joystick = Cvar_Get ("in_joystick", "0", CVAR_ARCHIVE|CVAR_LATCH);
+  // bk001130 - changed this to match win32
+  in_joystickDebug = Cvar_Get ("in_debugjoystick", "0", CVAR_TEMP);
+  joy_threshold = Cvar_Get ("joy_threshold", "0.15", CVAR_ARCHIVE); // FIXME: in_joythreshold
+
+  if (in_mouse->value)
+    mouse_avail = qtrue;
+  else
+    mouse_avail = qfalse;
+
+  IN_StartupJoystick( ); // bk001130 - from cvs1.17 (mkv)
+	Com_Printf ("------------------------------------\n");
+}
+
+void IN_Shutdown(void)
+{
+  mouse_avail = qfalse;
+}
+
+void IN_Frame (void) {
+
+  // bk001130 - from cvs 1.17 (mkv)
+  IN_JoyMove(); // FIXME: disable if on desktop?
+
+  if ( cls.keyCatchers & KEYCATCH_CONSOLE )
+  {
+    // temporarily deactivate if not in the game and
+    // running on the desktop
+    // voodoo always counts as full screen
+    if (Cvar_VariableValue ("r_fullscreen") == 0
+        && strcmp( Cvar_VariableString("r_glDriver"), _3DFX_DRIVER_NAME ) )
+    {
+      IN_DeactivateMouse ();
+      return;
+    }
+  }
+
+  IN_ActivateMouse();
+}
+
+void IN_Activate(void)
+{
+}
+
+// bk001130 - cvs1.17 joystick code (mkv) was here, no linux_joystick.c
+
+void Sys_SendKeyEvents (void) {
+  // XEvent event; // bk001204 - unused
+
+  if (!screen)
+    return;
+  HandleEvents();
+}
+
+
+// (moved this back in here from linux_joystick.c, so it's all in one place...
+//   --ryan.
+
+/* We translate axes movement into keypresses. */
+static int joy_keys[16] = {
+     K_LEFTARROW, K_RIGHTARROW,
+     K_UPARROW, K_DOWNARROW,
+     K_JOY16, K_JOY17,
+     K_JOY18, K_JOY19,
+     K_JOY20, K_JOY21,
+     K_JOY22, K_JOY23,
+
+     K_JOY24, K_JOY25,
+     K_JOY26, K_JOY27
+};
+
+
+// bk001130 - from linux_glimp.c
+extern cvar_t *  in_joystick;
+extern cvar_t *  in_joystickDebug;
+extern cvar_t *  joy_threshold;
+
+
+/**********************************************/
+/* Joystick routines.                         */
+/**********************************************/
+// bk001130 - from cvs1.17 (mkv), removed from linux_glimp.c
+void IN_StartupJoystick( void )
+{
+  int i = 0;
+  int total = 0;
+
+  if (stick != NULL)
+    SDL_JoystickClose(stick);
+
+  stick = NULL;
+
+  if( !in_joystick->integer ) {
+    Com_Printf( "Joystick is not active.\n" );
+    return;
+  }
+
+  if (!SDL_WasInit(SDL_INIT_JOYSTICK))
+  {
+      if (SDL_Init(SDL_INIT_JOYSTICK) == -1)
+      {
+          Com_Printf("SDL_Init(SDL_INIT_JOYSTICK) failed: %s\n", SDL_GetError());
+          return;
+      }
+  }
+
+  total = SDL_NumJoysticks();
+  Com_Printf("I see %d possible joysticks\n", total);
+  for (i = 0; i < total; i++)
+    Com_Printf("[%d] %s\n", i, SDL_JoystickName(i));
+
+  // !!! FIXME: someone should add a way to select a specific stick.
+  for( i = 0; i < total; i++ ) {
+    stick = SDL_JoystickOpen(i);
+    if (stick == NULL)
+        continue;
+
+    Com_Printf( "Joystick %d opened\n", i );
+    Com_Printf( "Name:    %s\n", SDL_JoystickName(i) );
+    Com_Printf( "Axes:    %d\n", SDL_JoystickNumAxes(stick) );
+    Com_Printf( "Buttons: %d\n", SDL_JoystickNumButtons(stick) );
+    Com_Printf( "Balls: %d\n", SDL_JoystickNumBalls(stick) );
+
+    SDL_JoystickEventState(SDL_QUERY);
+
+    /* Our work here is done. */
+    return;
+  }
+
+  /* No soup for you. */
+  if( stick == NULL ) {
+    Com_Printf( "No joystick opened.\n" );
+    return;
+  }
+}
+
+void IN_JoyMove( void )
+{
+  if (!stick)
+    return;
+
+  SDL_JoystickUpdate();
+
+#if 0   // !!! FIXME: convert this from the Linux codebase.
+  /* Store instantaneous joystick state. Hack to get around
+   * event model used in Linux joystick driver.
+	 */
+  static int axes_state[16];
+  /* Old bits for Quake-style input compares. */
+  static unsigned int old_axes = 0;
+  /* Our current goodies. */
+  unsigned int axes = 0;
+  int i = 0;
+
+  if( joy_fd == -1 ) {
+    return;
+  }
+
+  /* Empty the queue, dispatching button presses immediately
+	 * and updating the instantaneous state for the axes.
+	 */
+  do {
+    int n = -1;
+    struct js_event event;
+
+    n = read( joy_fd, &event, sizeof( event ) );
+
+    if( n == -1 ) {
+      /* No error, we're non-blocking. */
+      break;
+    }
+
+    if( event.type & JS_EVENT_BUTTON ) {
+      Sys_QueEvent( 0, SE_KEY, K_JOY1 + event.number, event.value, 0, NULL );
+    } else if( event.type & JS_EVENT_AXIS ) {
+
+      if( event.number >= 16 ) {
+	continue;
+      }
+
+      axes_state[event.number] = event.value;
+    } else {
+      Com_Printf( "Unknown joystick event type\n" );
+    }
+
+  } while( 1 );
+
+
+  /* Translate our instantaneous state to bits. */
+  for( i = 0; i < 16; i++ ) {
+    float f = ( (float) axes_state[i] ) / 32767.0f;
+
+    if( f < -joy_threshold->value ) {
+      axes |= ( 1 << ( i * 2 ) );
+    } else if( f > joy_threshold->value ) {
+      axes |= ( 1 << ( ( i * 2 ) + 1 ) );
+    }
+
+  }
+
+  /* Time to update axes state based on old vs. new. */
+  for( i = 0; i < 16; i++ ) {
+
+    if( ( axes & ( 1 << i ) ) && !( old_axes & ( 1 << i ) ) ) {
+      Sys_QueEvent( 0, SE_KEY, joy_keys[i], qtrue, 0, NULL );
+    }
+
+    if( !( axes & ( 1 << i ) ) && ( old_axes & ( 1 << i ) ) ) {
+      Sys_QueEvent( 0, SE_KEY, joy_keys[i], qfalse, 0, NULL );
+    }
+  }
+
+  /* Save for future generations. */
+  old_axes = axes;
+#endif
+}
+
+#endif  // USE_SDL
+
+// end of linux_glimp_sdl.c ...
+