fix wrong inequality

diff --git a/src/mesa/shader/programopt.c b/src/mesa/shader/programopt.c
index b17f5af..172d373 100644 (file)
--- a/src/mesa/shader/programopt.c
+++ b/src/mesa/shader/programopt.c
@@ -137,7 +137,7 @@ _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
    GLfloat fogVals[4];
    GLuint fogConsts;                /* constant values for EXP, EXP2 mode */
 
-   if (fprog->FogOption != GL_NONE) {
+   if (fprog->FogOption == GL_NONE) {
       _mesa_problem(ctx, "_mesa_append_fog_code() called for fragment program"
                     " with FogOption == GL_NONE");
       return;