press 'm' to toggle multisample enable/disable

diff --git a/progs/tests/antialias.c b/progs/tests/antialias.c
index 79b5ab75c5751e09c77675ea3b19da3d2293eece..c389bbea3a8d4bf7b6c584c5f40b961bcae4e55f 100644 (file)
--- a/progs/tests/antialias.c
+++ b/progs/tests/antialias.c
@@ -16,6 +16,7 @@
 static GLfloat Zrot = 0;
 static GLboolean Anim = GL_TRUE;
 static GLboolean HaveMultisample = GL_TRUE;
+static GLboolean DoMultisample = GL_TRUE;
 
 
 static void
@@ -86,7 +87,10 @@ Display( void )
    glColor3f(1, 1, 1);
    if (HaveMultisample) {
       glRasterPos2f(-3.1, -1.6);
-      PrintString("MULTISAMPLE");
+      if (DoMultisample)
+         PrintString("MULTISAMPLE");
+      else
+         PrintString("MULTISAMPLE (off)");
    }
    glRasterPos2f(-0.8, -1.6);
    PrintString("No antialiasing");
@@ -96,7 +100,8 @@ Display( void )
    /* multisample */
    if (HaveMultisample) {
       glEnable(GL_DEPTH_TEST);
-      glEnable(GL_MULTISAMPLE_ARB);
+      if (DoMultisample)
+         glEnable(GL_MULTISAMPLE_ARB);
       glPushMatrix();
       glTranslatef(-2.5, 0, 0);
       glPushMatrix();
@@ -173,6 +178,9 @@ Key( unsigned char key, int x, int y )
          else
             glutIdleFunc(NULL);
          break;
+      case 'm':
+         DoMultisample = !DoMultisample;
+         break;
       case 'z':
          Zrot = (int) (Zrot - step);
          break;