From c03b6f40baae1d11deaa9d1c7951ec8b5f80be81 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Tue, 26 Apr 2005 17:25:53 +0000
Subject: [PATCH] enable fog render input if fragment program fog option set

---
 src/mesa/tnl/t_context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/tnl/t_context.c b/src/mesa/tnl/t_context.c
index ef23784f6a0..40b030cb12e 100644
--- a/src/mesa/tnl/t_context.c
+++ b/src/mesa/tnl/t_context.c
@@ -175,7 +175,7 @@ _tnl_InvalidateState( GLcontext *ctx, GLuint new_state )
       tnl->render_inputs |= (_TNL_BIT_POS|_TNL_BIT_INDEX);
    }
     
-   if (ctx->Fog.Enabled)
+   if (ctx->Fog.Enabled || ctx->FragmentProgram.Current->FogOption != GL_NONE)
       tnl->render_inputs |= _TNL_BIT_FOG;
 
    if (ctx->Polygon.FrontMode != GL_FILL || 
-- 
2.30.2