don't try to compile GL_NV_half_float shaders if the extension is missing

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@5738 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/r_shadow.c b/r_shadow.c
index 1946a32a44ebea4d3c08148bc40c31bb40a06b80..9948cdb2600b3e9d121e655ab0452c212e30ba11 100644 (file)
--- a/r_shadow.c
+++ b/r_shadow.c
@@ -501,6 +501,9 @@ void r_shadow_start(void)
                        }
                        if (i & SHADERPERMUTATION_GEFORCEFX)
                        {
+                               // if the extension does not exist, don't try to compile it
+                               if (!gl_support_halffloat)
+                                       continue;
                                vertstrings_list[vertstrings_count++] = "#define GEFORCEFX\n";
                                fragstrings_list[fragstrings_count++] = "#define GEFORCEFX\n";
                        }