Apply patch from Jay Weisskopf adding an aspect ratio menu entry to resolution selector: https://bugzilla.icculus.org/show_bug.cgi?id=3475

code/q3_ui/ui_video.c

@@ -247,6 +247,7 @@ GRAPHICS OPTIONS MENU
 #define ID_DISPLAY		107
 #define ID_SOUND		108
 #define ID_NETWORK		109
+#define ID_RATIO		110
 
 typedef struct {
 	menuframework_s	menu;
@@ -261,6 +262,7 @@ typedef struct {
 	menutext_s		network;
 
 	menulist_s		list;
+	menulist_s		ratio;
 	menulist_s		mode;
 	menulist_s		driver;
 	menuslider_s	tq;
@@ -331,12 +333,31 @@ static const char *builtinResolutions[ ] =
 	"1280x1024",
 	"1600x1200",
 	"2048x1536",
-	"856x480 wide screen",
+	"856x480",
 	NULL
 };
 
+static const char *knownRatios[ ][2] =
+{
+	{ "1.25:1", "5:4"   },
+	{ "1.33:1", "4:3"   },
+	{ "1.50:1", "3:2"   },
+	{ "1.56:1", "14:9"  },
+	{ "1.60:1", "16:10" },
+	{ "1.67:1", "5:3"   },
+	{ "1.78:1", "16:9"  },
+	{ NULL    , NULL    }
+};
+
+#define MAX_RESOLUTIONS	32
+
+static const char* ratios[ MAX_RESOLUTIONS ];
+static char ratioBuf[ MAX_RESOLUTIONS ][ 8 ];
+static int ratioToRes[ MAX_RESOLUTIONS ];
+static int resToRatio[ MAX_RESOLUTIONS ];
+
 static char resbuf[ MAX_STRING_CHARS ];
-static const char* detectedResolutions[ 32 ];
+static const char* detectedResolutions[ MAX_RESOLUTIONS ];
 
 static const char** resolutions = builtinResolutions;
 static qboolean resolutionsDetected = qfalse;
@@ -358,7 +379,7 @@ static int GraphicsOptions_FindBuiltinResolution( int mode )
 
 	for( i = 0; builtinResolutions[ i ]; i++ )
 	{
-		if( !strcmp( builtinResolutions[ i ], detectedResolutions[ mode ] ) )
+		if( !Q_stricmp( builtinResolutions[ i ], detectedResolutions[ mode ] ) )
 			return i;
 	}
 
@@ -382,13 +403,68 @@ static int GraphicsOptions_FindDetectedResolution( int mode )
 
 	for( i = 0; detectedResolutions[ i ]; i++ )
 	{
-		if( !strcmp( builtinResolutions[ mode ], detectedResolutions[ i ] ) )
+		if( !Q_stricmp( builtinResolutions[ mode ], detectedResolutions[ i ] ) )
 			return i;
 	}
 
 	return -1;
 }
 
+/*
+=================
+GraphicsOptions_GetAspectRatios
+=================
+*/
+static void GraphicsOptions_GetAspectRatios( void )
+{
+	int i, r;
+	
+	// build ratio list from resolutions
+	for( r = 0; resolutions[r]; r++ )
+	{
+		int w, h;
+		char *x;
+		char str[ sizeof(ratioBuf[0]) ];
+		
+		// calculate resolution's aspect ratio
+		x = strchr( resolutions[r], 'x' ) + 1;
+		Q_strncpyz( str, resolutions[r], x-resolutions[r] );
+		w = atoi( str );
+		h = atoi( x );
+		Com_sprintf( str, sizeof(str), "%.2f:1", (float)w / (float)h );
+		
+		// add ratio to list if it is new
+		// establish res/ratio relationship
+		for( i = 0; ratioBuf[i][0]; i++ )
+		{
+			if( !Q_stricmp( str, ratioBuf[i] ) )
+				break;
+		}
+		if( !ratioBuf[i][0] )
+		{
+			Q_strncpyz( ratioBuf[i], str, sizeof(ratioBuf[i]) );
+			ratioToRes[i] = r;
+		}
+		resToRatio[r] = i;
+	}
+	
+	// prepare itemlist pointer array
+	// rename common ratios ("1.33:1" -> "4:3")
+	for( r = 0; ratioBuf[r][0]; r++ )
+	{
+		for( i = 0; knownRatios[i][0]; i++ )
+		{
+			if( !Q_stricmp( ratioBuf[r], knownRatios[i][0] ) )
+			{
+				Q_strncpyz( ratioBuf[r], knownRatios[i][1], sizeof(ratioBuf[r]) );
+				break;
+			}
+		}
+		ratios[r] = ratioBuf[r];
+	}
+	ratios[r] = NULL;
+}
+
 /*
 =================
 GraphicsOptions_GetInitialVideo
@@ -408,6 +484,35 @@ static void GraphicsOptions_GetInitialVideo( void )
 	s_ivo.texturebits = s_graphicsoptions.texturebits.curvalue;
 }
 
+/*
+=================
+GraphicsOptions_GetResolutions
+=================
+*/
+static void GraphicsOptions_GetResolutions( void )
+{
+	Q_strncpyz(resbuf, UI_Cvar_VariableString("r_availableModes"), sizeof(resbuf));
+	if(*resbuf)
+	{
+		char* s = resbuf;
+		unsigned int i = 0;
+		while( s && i < sizeof(detectedResolutions)/sizeof(detectedResolutions[0])-1)
+		{
+			detectedResolutions[i++] = s;
+			s = strchr(s, ' ');
+			if( s )
+				*s++ = '\0';
+		}
+		detectedResolutions[ i ] = NULL;
+
+		if( i > 0 )
+		{
+			resolutions = detectedResolutions;
+			resolutionsDetected = qtrue;
+		}
+	}
+}
+
 /*
 =================
 GraphicsOptions_CheckConfig
@@ -624,6 +729,11 @@ static void GraphicsOptions_Event( void* ptr, int event ) {
 	}
 
 	switch( ((menucommon_s*)ptr)->id ) {
+	case ID_RATIO:
+		s_graphicsoptions.mode.curvalue =
+			ratioToRes[ s_graphicsoptions.ratio.curvalue ];
+		// fall through to apply mode constraints
+		
 	case ID_MODE:
 		// clamp 3dfx video modes
 		if ( s_graphicsoptions.driver.curvalue == 1 )
@@ -633,12 +743,16 @@ static void GraphicsOptions_Event( void* ptr, int event ) {
 			else if ( s_graphicsoptions.mode.curvalue > 6 )
 				s_graphicsoptions.mode.curvalue = 6;
 		}
+		s_graphicsoptions.ratio.curvalue =
+			resToRatio[ s_graphicsoptions.mode.curvalue ];
 		break;
 
 	case ID_LIST:
 		ivo = &s_ivo_templates[s_graphicsoptions.list.curvalue];
 
 		s_graphicsoptions.mode.curvalue        = GraphicsOptions_FindDetectedResolution(ivo->mode);
+		s_graphicsoptions.ratio.curvalue =
+			resToRatio[ s_graphicsoptions.mode.curvalue ];
 		s_graphicsoptions.tq.curvalue          = ivo->tq;
 		s_graphicsoptions.lighting.curvalue    = ivo->lighting;
 		s_graphicsoptions.colordepth.curvalue  = ivo->colordepth;
@@ -726,7 +840,7 @@ static void GraphicsOptions_SetMenuItems( void )
 
 			for(i = 0; detectedResolutions[i]; ++i)
 			{
-				if(!strcmp(buf, detectedResolutions[i]))
+				if(!Q_stricmp(buf, detectedResolutions[i]))
 				{
 					s_graphicsoptions.mode.curvalue = i;
 					break;
@@ -740,6 +854,8 @@ static void GraphicsOptions_SetMenuItems( void )
 			s_graphicsoptions.mode.curvalue = 3;
 		}
 	}
+	s_graphicsoptions.ratio.curvalue =
+		resToRatio[ s_graphicsoptions.mode.curvalue ];
 	s_graphicsoptions.fs.curvalue = trap_Cvar_VariableValue("r_fullscreen");
 	s_graphicsoptions.allow_extensions.curvalue = trap_Cvar_VariableValue("r_allowExtensions");
 	s_graphicsoptions.tq.curvalue = 3-trap_Cvar_VariableValue( "r_picmip");
@@ -889,27 +1005,8 @@ void GraphicsOptions_MenuInit( void )
 	// zero set all our globals
 	memset( &s_graphicsoptions, 0 ,sizeof(graphicsoptions_t) );
 
-
+	GraphicsOptions_GetResolutions();
-	Q_strncpyz(resbuf, UI_Cvar_VariableString("r_availableModes"), sizeof(resbuf));
+	GraphicsOptions_GetAspectRatios();
-	if(*resbuf)
-	{
-		char* s = resbuf;
-		unsigned int i = 0;
-		while( s && i < sizeof(detectedResolutions)/sizeof(detectedResolutions[0])-1)
-		{
-			detectedResolutions[i++] = s;
-			s = strchr(s, ' ');
-			if( s )
-				*s++ = '\0';
-		}
-		detectedResolutions[ i ] = NULL;
-
-		if( i > 0 )
-		{
-			resolutions = detectedResolutions;
-			resolutionsDetected = qtrue;
-		}
-	}
 	
 	GraphicsOptions_Cache();
 
@@ -980,7 +1077,7 @@ void GraphicsOptions_MenuInit( void )
 	s_graphicsoptions.network.style				= UI_RIGHT;
 	s_graphicsoptions.network.color				= color_red;
 
-	y = 240 - 6 * (BIGCHAR_HEIGHT + 2);
+	y = 240 - 7 * (BIGCHAR_HEIGHT + 2);
 	s_graphicsoptions.list.generic.type     = MTYPE_SPINCONTROL;
 	s_graphicsoptions.list.generic.name     = "Graphics Settings:";
 	s_graphicsoptions.list.generic.flags    = QMF_PULSEIFFOCUS|QMF_SMALLFONT;
@@ -1009,9 +1106,19 @@ void GraphicsOptions_MenuInit( void )
 	s_graphicsoptions.allow_extensions.itemnames        = enabled_names;
 	y += BIGCHAR_HEIGHT+2;
 
+	s_graphicsoptions.ratio.generic.type     = MTYPE_SPINCONTROL;
+	s_graphicsoptions.ratio.generic.name     = "Aspect Ratio:";
+	s_graphicsoptions.ratio.generic.flags    = QMF_PULSEIFFOCUS|QMF_SMALLFONT;
+	s_graphicsoptions.ratio.generic.x        = 400;
+	s_graphicsoptions.ratio.generic.y        = y;
+	s_graphicsoptions.ratio.itemnames        = ratios;
+	s_graphicsoptions.ratio.generic.callback = GraphicsOptions_Event;
+	s_graphicsoptions.ratio.generic.id       = ID_RATIO;
+	y += BIGCHAR_HEIGHT+2;
+
 	// references/modifies "r_mode"
 	s_graphicsoptions.mode.generic.type     = MTYPE_SPINCONTROL;
-	s_graphicsoptions.mode.generic.name     = "Video Mode:";
+	s_graphicsoptions.mode.generic.name     = "Resolution:";
 	s_graphicsoptions.mode.generic.flags    = QMF_PULSEIFFOCUS|QMF_SMALLFONT;
 	s_graphicsoptions.mode.generic.x        = 400;
 	s_graphicsoptions.mode.generic.y        = y;
@@ -1129,6 +1236,7 @@ void GraphicsOptions_MenuInit( void )
 	Menu_AddItem( &s_graphicsoptions.menu, ( void * ) &s_graphicsoptions.list );
 	Menu_AddItem( &s_graphicsoptions.menu, ( void * ) &s_graphicsoptions.driver );
 	Menu_AddItem( &s_graphicsoptions.menu, ( void * ) &s_graphicsoptions.allow_extensions );
+	Menu_AddItem( &s_graphicsoptions.menu, ( void * ) &s_graphicsoptions.ratio );
 	Menu_AddItem( &s_graphicsoptions.menu, ( void * ) &s_graphicsoptions.mode );
 	Menu_AddItem( &s_graphicsoptions.menu, ( void * ) &s_graphicsoptions.colordepth );
 	Menu_AddItem( &s_graphicsoptions.menu, ( void * ) &s_graphicsoptions.fs );