Tweaked color buffer clearing defaults. We clear the color buffer if we

are doing textures.  Assumptions:  If we are doing textures we have hardware
support that can clear the color buffer for "free."  If we are doing software
rendering with textures, then the extra clear time gets lost in the noise.

diff --git a/Main/GLUTmain.cxx b/Main/GLUTmain.cxx
index b4d7f400f0f5fe08b6429edffa3c77011789e9fa..b073fd5b13431ab5caeb981ad0df77832c89b2d9 100644 (file)
--- a/Main/GLUTmain.cxx
+++ b/Main/GLUTmain.cxx
@@ -46,8 +46,6 @@
 
 #ifdef HAVE_UNISTD_H
 #  include <unistd.h>    /* for fork() && stat() */
-#  include <sys/types.h> /* for wait() */
-#  include <sys/wait.h>  /* for wait() */
 #endif
 
 #include <Include/fg_constants.h>  // for VERSION
@@ -144,7 +142,7 @@ static void fgInitVisuals( void ) {
 
     // If enabled, normal vectors specified with glNormal are scaled
     // to unit length after transformation.  See glNormal.
-    xglEnable( GL_NORMALIZE );
+    // xglEnable( GL_NORMALIZE );
 
     xglEnable( GL_LIGHTING );
     xglEnable( GL_LIGHT0 );
@@ -168,6 +166,11 @@ static void fgInitVisuals( void ) {
 
     // This is the default anyways, but it can't hurt
     xglFrontFace ( GL_CCW );
+
+    // Just testing ...
+    // xglEnable(GL_POINT_SMOOTH);
+    // xglEnable(GL_LINE_SMOOTH);
+    // xglEnable(GL_POLYGON_SMOOTH);      
 }
 
 
@@ -330,7 +333,12 @@ static void fgRenderFrame( void ) {
            clear_mask |= GL_COLOR_BUFFER_BIT;
        }
        if ( current_options.get_skyblend() ) {
-           glClearColor(black[0], black[1], black[2], black[3]);
+           if ( current_options.get_textures() ) {
+               // glClearColor(black[0], black[1], black[2], black[3]);
+               glClearColor(l->fog_color[0], l->fog_color[1], 
+                            l->fog_color[2], l->fog_color[3]);
+               clear_mask |= GL_COLOR_BUFFER_BIT;              
+           }
        } else {
            glClearColor(l->sky_color[0], l->sky_color[1], 
                         l->sky_color[2], l->sky_color[3]);
@@ -638,7 +646,7 @@ static void fgMainLoop( void ) {
 static void fgIdleFunction ( void ) {
     fgGENERAL *g;
     char path[256], mp3file[256], command[256], slfile[256];
-    // static char *lockfile = "/tmp/mpg123.running";
+    static char *lockfile = "/tmp/mpg123.running";
 
     g = &general;
 
@@ -658,21 +666,13 @@ static void fgIdleFunction ( void ) {
            current_options.get_fg_root(mp3file);
            strcat(mp3file, "/Sounds/");
            strcat(mp3file, "intro.mp3");
-           /* 
+
            sprintf(command, 
                    "(touch %s; mpg123 %s > /dev/null 2>&1; /bin/rm %s) &", 
                    lockfile, mp3file, lockfile );
-                   */
-           sprintf(command, "mpg123 %s > /dev/null 2>&1", mp3file);
            fgPrintf( FG_GENERAL, FG_INFO, 
                      "Starting intro music: %s\n", mp3file);
-
-           int pid = fork () ;
-
-           if ( pid == 0 ) {
-               system ( command );
-               exit ( 0 ) ;
-           }
+           system(command);
        }
 #endif
 
@@ -725,20 +725,16 @@ static void fgIdleFunction ( void ) {
 #if !defined(WIN32)
        if ( current_options.get_intro_music() ) {
            // Let's wait for mpg123 to finish
-           // struct stat stat_buf;
+           struct stat stat_buf;
 
            fgPrintf( FG_GENERAL, FG_INFO, 
                      "Waiting for mpg123 player to finish ...\n" );
-           /*
            while ( stat(lockfile, &stat_buf) == 0 ) {
                // file exist, wait ...
                sleep(1);
                fgPrintf( FG_GENERAL, FG_INFO, ".");
            }
            fgPrintf( FG_GENERAL, FG_INFO, "\n");
-           */
-
-           wait(0);
        }
 #endif // WIN32
 
@@ -914,6 +910,12 @@ int main( int argc, char **argv ) {
 
 
 // $Log$
+// Revision 1.37  1998/07/20 12:49:44  curt
+// Tweaked color buffer clearing defaults.  We clear the color buffer if we
+// are doing textures.  Assumptions:  If we are doing textures we have hardware
+// support that can clear the color buffer for "free."  If we are doing software
+// rendering with textures, then the extra clear time gets lost in the noise.
+//
 // Revision 1.36  1998/07/16 17:33:35  curt
 // "H" / "h" now control hud brightness as well with off being one of the
 //   states.