Demos (master): glsl: Fix build breakage with GLU 1.2.

[Jose Fonseca]

Module: Demos
Branch: master
Commit: 6d3a5769d7669054251dfd101f1a9a9d7bb15e11
URL:    http://cgit.freedesktop.org/mesa/demos/commit/?id=6d3a5769d7669054251dfd101f1a9a9d7bb15e11

Author: José Fonseca <jfonseca at vmware.com>
Date:   Wed Mar  9 15:13:38 2011 +0000

glsl: Fix build breakage with GLU 1.2.

---

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

diff --git a/src/glsl/shtest.c b/src/glsl/shtest.c
index 520eccf..18f25b3 100644
--- a/src/glsl/shtest.c
+++ b/src/glsl/shtest.c
@@ -417,9 +417,14 @@ LoadTexture(GLint unit, GLenum target, const char *texFileName)
    glBindTexture(objTarget, tex);
 
    if (target == GL_TEXTURE_3D) {
+#ifdef GLU_VERSION_1_3
       /* depth=1 */
       gluBuild3DMipmaps(target, 4, imgWidth, imgHeight, 1,
                         imgFormat, GL_UNSIGNED_BYTE, image);
+#else
+      fprintf(stderr, "Error: GLU 1.3 not available\n");
+      exit(1);
+#endif
    }
    else if (target == GL_TEXTURE_1D) {
       gluBuild1DMipmaps(target, 4, imgWidth,