- gluBuild2DMipmaps(GL_TEXTURE_2D, 3, WoodTextureWidth, WoodTextureHeight,
- GL_RGB, GL_UNSIGNED_BYTE, WoodTextureData);
+
+ clear_gl_error();
+ status = gluBuild2DMipmaps(GL_TEXTURE_2D, 3,
+ WoodTextureWidth, WoodTextureHeight,
+ GL_RGB, GL_UNSIGNED_BYTE, WoodTextureData);
+ if (status)
+ {
+ const char *s = gluErrorString (status);
+ fprintf (stderr, "%s: error mipmapping texture: %s\n",
+ progname, (s ? s : "(unknown)"));
+ exit (1);
+ }
+ check_gl_error("mipmapping");
+