From: Keith Whitwell <keith@tungstengraphics.com>
Date: Mon, 5 Dec 2005 11:44:09 +0000 (+0000)
Subject: Add guard before calling ctx->Driver.BindProgram
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b4ebb682027e42c1f6525d0f8cee9ccd41e15ca0;p=mesa.git

Add guard before calling ctx->Driver.BindProgram
---

diff --git a/src/mesa/tnl/t_vp_build.c b/src/mesa/tnl/t_vp_build.c
index 2d42fafd88e..77e105115c8 100644
--- a/src/mesa/tnl/t_vp_build.c
+++ b/src/mesa/tnl/t_vp_build.c
@@ -1536,7 +1536,8 @@ void _tnl_UpdateFixedFunctionProgram( GLcontext *ctx )
    /* Tell the driver about the change.  Could define a new target for
     * this?
     */
-   if (ctx->VertexProgram._Current != prev) 
+   if (ctx->VertexProgram._Current != prev &&
+       ctx->Driver.BindProgram) 
       ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB, (struct program *)
 			      ctx->VertexProgram._Current);   
 }