Several fp and vp tweaks:

	- Renumber VERT_RESULT_* values so that they match the
	  numbers of the corresponding FRAG_ATTRIB_ values.

        - Add ctx->VertexProgram._Current and FragmentProgram._Current
	  values which point to either the current client-supplied
	  program if enabled, or otherwise to the current mesa-internal
	  program.  Thus this program is always the correct one for
	  the current state, providing that the mesa flags to turn on
	  automatic generation are enabled.

	- Add callbacks to ctx->Driver.BindProgram() in texenvprogram.c
	  and t_vp_build.c so that the driver knows when the generated
	  program changes.  This is cleaner than trying to code all the
	  possible _NEW_* flags into the driver, and more precise as well.

	- Add a UsesKill flag to identify fragment programs with that
	  instruction, as these can require special treatment.

	- Move the FRAG_OUTPUT values to mtypes.h, near to similar defn's.

1 files changed, 29 insertions, 20 deletions

diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c
index 18d704ce1b..43dda28f26 100644
--- a/src/mesa/main/texenvprogram.c
+++ b/src/mesa/main/texenvprogram.c
@@ -1130,32 +1130,41 @@ void _mesa_UpdateTexEnvProgram( GLcontext *ctx )
 {
    struct state_key *key;
    GLuint hash;
+   struct fragment_program *prev = ctx->FragmentProgram._Current;
 	
-   if (ctx->FragmentProgram._Enabled)
-      return;
-	
-   key = make_state_key(ctx);
-   hash = hash_key(key);
-
-   ctx->FragmentProgram._Current = ctx->_TexEnvProgram =
-      (struct fragment_program *)
-      search_cache(ctx->Texture.env_fp_cache, hash, key, sizeof(*key));
+   if (!ctx->FragmentProgram._Enabled) {
+      key = make_state_key(ctx);
+      hash = hash_key(key);
+      
+      ctx->FragmentProgram._Current = ctx->_TexEnvProgram =
+	 (struct fragment_program *)
+	 search_cache(ctx->Texture.env_fp_cache, hash, key, sizeof(*key));
 	
-   if (!ctx->_TexEnvProgram) {
-      if (0) _mesa_printf("Building new texenv proggy for key %x\n", hash);
+      if (!ctx->_TexEnvProgram) {
+	 if (1) _mesa_printf("Building new texenv proggy for key %x\n", hash);
 		
-      ctx->FragmentProgram._Current = ctx->_TexEnvProgram = 
-	 (struct fragment_program *) 
-	 ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
+	 ctx->FragmentProgram._Current = ctx->_TexEnvProgram = 
+	    (struct fragment_program *) 
+	    ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
 		
-      create_new_program(key, ctx, ctx->_TexEnvProgram);
+	 create_new_program(key, ctx, ctx->_TexEnvProgram);
 
-      cache_item(&ctx->Texture.env_fp_cache, hash, key, ctx->_TexEnvProgram);
-   } else {
-      FREE(key);
-      if (0) _mesa_printf("Found existing texenv program for key %x\n", hash);
+	 cache_item(&ctx->Texture.env_fp_cache, hash, key, ctx->_TexEnvProgram);
+      } else {
+	 FREE(key);
+	 if (1) _mesa_printf("Found existing texenv program for key %x\n", hash);
+      }
+   } 
+   else {
+      ctx->FragmentProgram._Current = ctx->FragmentProgram.Current;
    }
-	
+
+   /* Tell the driver about the change.  Could define a new target for
+    * this?
+    */
+   if (ctx->FragmentProgram._Current != prev)
+      ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, (struct program *)
+			      ctx->FragmentProgram._Current);   
 }
 
 void _mesa_TexEnvProgramCacheDestroy( GLcontext *ctx )