From 1609d1c42b68804025f74c037910b1cec919e92d Mon Sep 17 00:00:00 2001
From: Zack Middleton <zturtleman@gmail.com>
Date: Thu, 11 Aug 2011 05:14:42 +0000
Subject: [PATCH] - Added r_mode -2 for using display resolution. - Changed
 q3_ui's very high video settings use display resolution.

---
 code/q3_ui/ui_video.c   | 32 ++++++++++++++++++++++++++------
 code/renderer/tr_init.c |  7 +++++--
 code/sdl/sdl_glimp.c    | 10 ++++++++++
 3 files changed, 41 insertions(+), 8 deletions(-)

diff --git a/code/q3_ui/ui_video.c b/code/q3_ui/ui_video.c
index d37a8149..2d2ddfdd 100644
--- a/code/q3_ui/ui_video.c
+++ b/code/q3_ui/ui_video.c
@@ -297,7 +297,7 @@ static graphicsoptions_t		s_graphicsoptions;
 static InitialVideoOptions_s s_ivo_templates[] =
 {
 	{
-		6, qtrue, 3, 0, 2, 2, 1, 0, qtrue
+		6, qtrue, 3, 0, 2, 2, 1, 0, qtrue	// Note: If r_availableModes is found, mode is changed to -2.
 	},
 	{
 		4, qtrue, 2, 0, 2, 1, 1, 0, qtrue	// JDC: this was tq 3
@@ -372,6 +372,10 @@ static int GraphicsOptions_FindBuiltinResolution( int mode )
 	if( !resolutionsDetected )
 		return mode;
 
+	// Display resolution
+	if( mode == 0 )
+		return -2;
+
 	if( mode < 0 )
 		return -1;
 
@@ -396,6 +400,10 @@ static int GraphicsOptions_FindDetectedResolution( int mode )
 	if( !resolutionsDetected )
 		return mode;
 
+	// Display resolution
+	if( mode == -2 )
+		return 0;
+
 	if( mode < 0 )
 		return -1;
 
@@ -425,11 +433,16 @@ static void GraphicsOptions_GetAspectRatios( void )
 		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 );
+		x = strchr( resolutions[r], 'x' );
+		if (x) {
+			x++;
+			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 );
+		} else {
+			Q_strncpyz(str, "Unknown", sizeof(str));
+		}
 
 		// rename common ratios ("1.33:1" -> "4:3")
 		for( i = 0; knownRatios[i][0]; i++ ) {
@@ -489,6 +502,13 @@ static void GraphicsOptions_GetResolutions( void )
 	{
 		char* s = resbuf;
 		unsigned int i = 0;
+
+		// Add display resolution video mode
+		detectedResolutions[i++] = "Display Resolution";
+
+		// Use display resolution in "Very High Quality" template
+		s_ivo_templates[0].mode = -2;
+
 		while( s && i < ARRAY_LEN(detectedResolutions)-1 )
 		{
 			detectedResolutions[i++] = s;
diff --git a/code/renderer/tr_init.c b/code/renderer/tr_init.c
index 2b239d87..3f194009 100644
--- a/code/renderer/tr_init.c
+++ b/code/renderer/tr_init.c
@@ -292,14 +292,17 @@ qboolean R_GetModeInfo( int *width, int *height, float *windowAspect, int mode )
 	vidmode_t	*vm;
 	float			pixelAspect;
 
-	if ( mode < -1 ) {
+	if ( mode < -2 ) {
 		return qfalse;
 	}
 	if ( mode >= s_numVidModes ) {
 		return qfalse;
 	}
 
-	if ( mode == -1 ) {
+	if ( mode == -2 ) {
+		// Must set width and height to display size before calling this function!
+		pixelAspect = 1.0f;
+	} else if ( mode == -1 ) {
 		*width = r_customwidth->integer;
 		*height = r_customheight->integer;
 		pixelAspect = r_customPixelAspect->value;
diff --git a/code/sdl/sdl_glimp.c b/code/sdl/sdl_glimp.c
index cbdbcefa..bd36c83d 100644
--- a/code/sdl/sdl_glimp.c
+++ b/code/sdl/sdl_glimp.c
@@ -248,6 +248,16 @@ static int GLimp_SetMode(int mode, qboolean fullscreen, qboolean noborder)
 		}
 	}
 
+	if( videoInfo->current_h > 0 ) {
+		glConfig.vidWidth = videoInfo->current_w;
+		glConfig.vidHeight = videoInfo->current_h;
+	} else {
+		glConfig.vidWidth = 480;
+		glConfig.vidHeight = 640;
+		ri.Printf( PRINT_ALL,
+				"Cannot determine display resolution, assuming 640x480\n" );
+	}
+
 	ri.Printf (PRINT_ALL, "...setting mode %d:", mode );
 
 	if ( !R_GetModeInfo( &glConfig.vidWidth, &glConfig.vidHeight, &glConfig.windowAspect, mode ) )