1 files changed, 4 insertions, 2 deletions
diff --git a/progs/fp/tri-inv.c b/progs/fp/tri-inv.c
index e902332386..7e8d8c5ce2 100644
--- a/progs/fp/tri-inv.c
+++ b/progs/fp/tri-inv.c
@@ -2,7 +2,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
-#define GL_GLEXT_PROTOTYPES
+#include <GL/glew.h>
 #include <GL/glut.h>
 
 
@@ -17,7 +17,7 @@ static void Init( void )
       ;
    GLuint modulateProg;
 
-   if (!glutExtensionSupported("GL_ARB_fragment_program")) {
+   if (!GLEW_ARB_fragment_program) {
       printf("Error: GL_ARB_fragment_program not supported!\n");
       exit(1);
    }
@@ -99,6 +99,8 @@ int main(int argc, char **argv)
 	exit(1);
     }
 
+    glewInit();
+
     Init();
 
     glutReshapeFunc(Reshape);