--- a/src/video/x11/SDL_x11gl.c	Mon Aug 19 03:40:44 2002 +0000
+++ b/src/video/x11/SDL_x11gl.c	Mon Aug 19 17:58:08 2002 +0000
@@ -67,8 +67,8 @@
 	}
 
         /* Setup our GLX attributes according to the gl_config. */
-        i = 0;
-        attribs[i++] = GLX_RGBA;
+	i = 0;
+	attribs[i++] = GLX_RGBA;
 	attribs[i++] = GLX_RED_SIZE;
 	attribs[i++] = this->gl_config.red_size;
 	attribs[i++] = GLX_GREEN_SIZE;
@@ -82,8 +82,8 @@
 	}
 
 	if( this->gl_config.buffer_size ) {
-                attribs[i++] = GLX_BUFFER_SIZE;
-	        attribs[i++] = this->gl_config.buffer_size;
+		attribs[i++] = GLX_BUFFER_SIZE;
+		attribs[i++] = this->gl_config.buffer_size;
 	}
 
 	if( this->gl_config.double_buffer ) {
@@ -99,25 +99,30 @@
 	}
 
 	if( this->gl_config.accum_red_size ) {
-	        attribs[i++] = GLX_ACCUM_RED_SIZE;
+		attribs[i++] = GLX_ACCUM_RED_SIZE;
 		attribs[i++] = this->gl_config.accum_red_size;
 	}
 
 	if( this->gl_config.accum_green_size ) {
-	        attribs[i++] = GLX_ACCUM_GREEN_SIZE;
+		attribs[i++] = GLX_ACCUM_GREEN_SIZE;
 		attribs[i++] = this->gl_config.accum_green_size;
 	}
 
 	if( this->gl_config.accum_blue_size ) {
-	        attribs[i++] = GLX_ACCUM_BLUE_SIZE;
+		attribs[i++] = GLX_ACCUM_BLUE_SIZE;
 		attribs[i++] = this->gl_config.accum_blue_size;
 	}
 
 	if( this->gl_config.accum_alpha_size ) {
-	        attribs[i++] = GLX_ACCUM_ALPHA_SIZE;
+		attribs[i++] = GLX_ACCUM_ALPHA_SIZE;
 		attribs[i++] = this->gl_config.accum_alpha_size;
 	}
 
+	if( this->gl_config.stereo ) {
+		attribs[i++] = GLX_STEREO;
+		attribs[i++] = this->gl_config.stereo;
+	}
+
 #ifdef GLX_DIRECT_COLOR /* Try for a DirectColor visual for gamma support */
 	attribs[i++] = GLX_X_VISUAL_TYPE;
 	attribs[i++] = GLX_DIRECT_COLOR;
@@ -288,6 +293,9 @@
 	    case SDL_GL_ACCUM_ALPHA_SIZE:
 		glx_attrib = GLX_ACCUM_ALPHA_SIZE;
 		break;
+	    case SDL_GL_STEREO:
+		glx_attrib = GLX_STEREO;
+		break;
 	    default:
 		return(-1);
 	}