st/mesa: remove st_context::missing textures and get_passthrough_fs

Reviewed-by: Brian Paul <brianp@vmware.com>

src/mesa/state_tracker/st_atom_shader.c

@@ -49,24 +49,6 @@
 #include "st_program.h"
 
 
-/**
- * Return pointer to a pass-through fragment shader.
- * This shader is used when a texture is missing/incomplete.
- */
-static void *
-get_passthrough_fs(struct st_context *st)
-{
-   if (!st->passthrough_fs) {
-      st->passthrough_fs =
-         util_make_fragment_passthrough_shader(st->pipe, TGSI_SEMANTIC_COLOR,
-                                               TGSI_INTERPOLATE_PERSPECTIVE,
-                                               TRUE);
-   }
-
-   return st->passthrough_fs;
-}
-
-
 /**
  * Update fragment program state/atom.  This involves translating the
  * Mesa fragment program into a gallium fragment program and binding it.
@@ -96,16 +78,9 @@ update_fp( struct st_context *st )
 
    st_reference_fragprog(st, &st->fp, stfp);
 
-   if (st->missing_textures) {
-      /* use a pass-through frag shader that uses no textures */
-      void *fs = get_passthrough_fs(st);
-      cso_set_fragment_shader_handle(st->cso_context, fs);
-   }
-   else {
    cso_set_fragment_shader_handle(st->cso_context,
                                   st->fp_variant->driver_shader);
 }
-}
 
 
 const struct st_tracked_state st_update_fp = {

src/mesa/state_tracker/st_context.h

@@ -140,7 +140,6 @@ struct st_context
 
    struct st_state_flags dirty;
 
-   GLboolean missing_textures;
    GLboolean vertdata_edgeflags;
    GLboolean edgeflag_culls_prims;