1 files changed, 33 insertions, 9 deletions

diff --git a/src/sdl/sdl_glimp.c b/src/sdl/sdl_glimp.c
index 51b448a2..fed3fc5b 100644
--- a/src/sdl/sdl_glimp.c
+++ b/src/sdl/sdl_glimp.c
@@ -135,19 +135,32 @@ static void GLimp_DetectAvailableModes(void)
 {
 	int i, j;
 	char buf[ MAX_STRING_CHARS ] = { 0 };
-	SDL_Rect modes[ 128 ];
+	int numSDLModes;
+	SDL_Rect *modes;
 	int numModes = 0;
 
-	int display = SDL_GetWindowDisplayIndex( SDL_window );
 	SDL_DisplayMode windowMode;
+	int display = SDL_GetWindowDisplayIndex( SDL_window );
+	if( display < 0 )
+	{
+		ri.Printf( PRINT_WARNING, "Couldn't get window display index, no resolutions detected: %s\n", SDL_GetError() );
+		return;
+	}
+	numSDLModes = SDL_GetNumDisplayModes( display );
 
-	if( SDL_GetWindowDisplayMode( SDL_window, &windowMode ) < 0 )
+	if( SDL_GetWindowDisplayMode( SDL_window, &windowMode ) < 0 || numSDLModes <= 0 )
 	{
-		ri.Printf( PRINT_WARNING, "Couldn't get window display mode, no resolutions detected\n" );
+		ri.Printf( PRINT_WARNING, "Couldn't get window display mode, no resolutions detected: %s\n", SDL_GetError() );
 		return;
 	}
 
-	for( i = 0; i < SDL_GetNumDisplayModes( display ); i++ )
+	modes = SDL_calloc( (size_t)numSDLModes, sizeof( SDL_Rect ) );
+	if ( !modes )
+	{
+		ri.Error( ERR_FATAL, "Out of memory" );
+	}
+
+	for( i = 0; i < numSDLModes; i++ )
 	{
 		SDL_DisplayMode mode;
 
@@ -157,6 +170,7 @@ static void GLimp_DetectAvailableModes(void)
 		if( !mode.w || !mode.h )
 		{
 			ri.Printf( PRINT_ALL, "Display supports any resolution\n" );
+			SDL_free( modes );
 			return;
 		}
 
@@ -198,6 +212,7 @@ static void GLimp_DetectAvailableModes(void)
 		ri.Printf( PRINT_ALL, "Available modes: '%s'\n", buf );
 		ri.Cvar_Set( "r_availableModes", buf );
 	}
+	SDL_free( modes );
 }
 
 #define R_FAILSAFE_WIDTH  640
@@ -243,9 +258,15 @@ static int GLimp_SetMode( qboolean failSafe, qboolean fullscreen, qboolean nobor
 
 	// If a window exists, note its display index
 	if( SDL_window != NULL )
+	{
 		display = SDL_GetWindowDisplayIndex( SDL_window );
+		if( display < 0 )
+		{
+			ri.Printf( PRINT_DEVELOPER, "SDL_GetWindowDisplayIndex() failed: %s\n", SDL_GetError() );
+		}
+	}
 
-	if( SDL_GetDesktopDisplayMode( display, &desktopMode ) == 0 )
+	if( display >= 0 && SDL_GetDesktopDisplayMode( display, &desktopMode ) == 0 )
 	{
 		glConfig.displayAspect = (float)desktopMode.w / (float)desktopMode.h;
 
@@ -445,7 +466,7 @@ static int GLimp_SetMode( qboolean failSafe, qboolean fullscreen, qboolean nobor
 #endif
 
 		if( ( SDL_window = SDL_CreateWindow( CLIENT_WINDOW_TITLE, x, y,
-				glConfig.vidWidth, glConfig.vidHeight, flags ) ) == 0 )
+				glConfig.vidWidth, glConfig.vidHeight, flags ) ) == NULL )
 		{
 			ri.Printf( PRINT_DEVELOPER, "SDL_CreateWindow failed: %s\n", SDL_GetError( ) );
 			continue;
@@ -486,7 +507,10 @@ static int GLimp_SetMode( qboolean failSafe, qboolean fullscreen, qboolean nobor
 		qglClear( GL_COLOR_BUFFER_BIT );
 		SDL_GL_SwapWindow( SDL_window );
 
-		SDL_GL_SetSwapInterval( r_swapInterval->integer );
+		if( SDL_GL_SetSwapInterval( r_swapInterval->integer ) == -1 )
+		{
+			ri.Printf( PRINT_DEVELOPER, "SDL_GL_SetSwapInterval failed: %s\n", SDL_GetError( ) );
+		}
 
 		glConfig.colorBits = testColorBits;
 		glConfig.depthBits = testDepthBits;
@@ -526,7 +550,7 @@ static qboolean GLimp_StartDriverAndSetMode( qboolean failSafe, qboolean fullscr
 	{
 		const char *driverName;
 
-		if (SDL_Init(SDL_INIT_VIDEO) == -1)
+		if (SDL_Init(SDL_INIT_VIDEO) != 0)
 		{
 			ri.Printf( PRINT_ALL, "SDL_Init( SDL_INIT_VIDEO ) FAILED (%s)\n", SDL_GetError());
 			return qfalse;