temporarily set the FRAG_BIT_FOGC bit in InputsRead when fog is enabled

(cherry picked from commit 63be96bdc7e9f388a5c49295bd7e150462fd003a)

diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c
index 5f7634b46093e69dbbb5ffd9c080132a5f310b33..d471030f1463e9e0efdf359924f0a5d7ff6a5783 100644 (file)
--- a/src/mesa/main/texenvprogram.c
+++ b/src/mesa/main/texenvprogram.c
@@ -1100,6 +1100,7 @@ create_new_program(GLcontext *ctx, struct state_key *key,
        * a reduced value and not what is expected in FogOption
        */
       p.program->FogOption = ctx->Fog.Mode;
+      p.program->Base.InputsRead |= FRAG_BIT_FOGC; /* XXX new */
    } else
       p.program->FogOption = GL_NONE;