Demos (master): bezier: check for GL_ARB_geometry_shader4 extension

[Brian Paul]

Module: Demos
Branch: master
Commit: b82461f2bf4a7fe0719ca1e8b45060c775cf680c
URL:    http://cgit.freedesktop.org/mesa/demos/commit/?id=b82461f2bf4a7fe0719ca1e8b45060c775cf680c

Author: Brian Paul <brianp at vmware.com>
Date:   Wed May 18 16:17:12 2011 -0600

bezier: check for GL_ARB_geometry_shader4 extension

---

 src/glsl/bezier.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/glsl/bezier.c b/src/glsl/bezier.c
index b4036e7..0b56bc1 100644
--- a/src/glsl/bezier.c
+++ b/src/glsl/bezier.c
@@ -161,6 +161,11 @@ static void init(void)
    if (!ShadersSupported())
       exit(1);
 
+   if (!glutExtensionSupported("GL_ARB_geometry_shader4")) {
+      printf("This demo requires GL_ARB_geometry_shader4\n");
+      exit(1);
+   }
+
    menu_init();
 
    fragShader = glCreateShader(GL_FRAGMENT_SHADER);