Renamed softpipe directories and files to something less confusing.

softpipe/state_tracker --> state_tracker/
softpipe/              --> pipe/
softpipe/generic       --> pipe/softpipe/

I don't think pipe is a great name, but I disliked all the others too.
Luckily it's fairly easy to rename with git, so this can be revisited
later.

1 files changed, 171 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_atom.c b/src/mesa/state_tracker/st_atom.c
new file mode 100644
index 0000000000..fdbfb9021d
--- /dev/null
+++ b/src/mesa/state_tracker/st_atom.c
@@ -0,0 +1,171 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+
+#include "glheader.h"
+#include "context.h"
+
+#include "st_context.h"
+#include "st_atom.h"
+
+       
+
+/* This is used to initialize st->atoms[].  We could use this list
+ * directly except for a single atom, st_update_constants, which has a
+ * .dirty value which changes according to the parameters of the
+ * current fragment and vertex programs, and so cannot be a static
+ * value.
+ */
+static const struct st_tracked_state *atoms[] =
+{
+   &st_update_cbuf,
+   &st_update_clip,
+   &st_update_fs,
+   &st_update_setup,
+   &st_update_viewport,
+   &st_update_scissor,
+   &st_update_blend,
+   &st_update_stencil,
+   /* will be patched out at runtime */
+/*    &st_update_constants */
+};
+
+
+void st_init_atoms( struct st_context *st )
+{
+   GLuint i;
+
+   st->atoms = _mesa_malloc(sizeof(atoms));
+   st->nr_atoms = sizeof(atoms)/sizeof(*atoms);
+   memcpy(st->atoms, atoms, sizeof(atoms));
+
+   /* Patch in a pointer to the dynamic state atom:
+    */
+   for (i = 0; i < st->nr_atoms; i++)
+      if (st->atoms[i] == &st_update_constants)
+	 st->atoms[i] = &st->constants.tracked_state;
+
+   memcpy(&st->constants.tracked_state, 
+          &st_update_constants,
+          sizeof(st_update_constants));
+}
+
+
+void st_destroy_atoms( struct st_context *st )
+{
+   if (st->atoms) {
+      _mesa_free(st->atoms);
+      st->atoms = NULL;
+   }
+}
+
+
+/***********************************************************************
+ */
+
+static GLboolean check_state( const struct st_state_flags *a,
+			      const struct st_state_flags *b )
+{
+   return ((a->mesa & b->mesa) ||
+	   (a->st & b->st));
+}
+
+static void accumulate_state( struct st_state_flags *a,
+			      const struct st_state_flags *b )
+{
+   a->mesa |= b->mesa;
+   a->st |= b->st;
+}
+
+
+static void xor_states( struct st_state_flags *result,
+			     const struct st_state_flags *a,
+			      const struct st_state_flags *b )
+{
+   result->mesa = a->mesa ^ b->mesa;
+   result->st = a->st ^ b->st;
+}
+
+
+/***********************************************************************
+ * Update all derived state:
+ */
+
+void st_validate_state( struct st_context *st )
+{
+   struct st_state_flags *state = &st->dirty;
+   GLuint i;
+
+   if (state->st == 0)
+      return;
+
+   if (1) {
+      /* Debug version which enforces various sanity checks on the
+       * state flags which are generated and checked to help ensure
+       * state atoms are ordered correctly in the list.
+       */
+      struct st_state_flags examined, prev;      
+      _mesa_memset(&examined, 0, sizeof(examined));
+      prev = *state;
+
+      for (i = 0; i < st->nr_atoms; i++) {	 
+	 const struct st_tracked_state *atom = st->atoms[i];
+	 struct st_state_flags generated;
+
+	 assert(atom->dirty.mesa ||
+		atom->dirty.st);
+	 assert(atom->update);
+
+	 if (check_state(state, &atom->dirty)) {
+	    st->atoms[i]->update( st );
+	 }
+
+	 accumulate_state(&examined, &atom->dirty);
+
+	 /* generated = (prev ^ state)
+	  * if (examined & generated)
+	  *     fail;
+	  */
+	 xor_states(&generated, &prev, state);
+	 assert(!check_state(&examined, &generated));
+	 prev = *state;
+      }
+   }
+   else {
+      const GLuint nr = st->nr_atoms;
+
+      for (i = 0; i < nr; i++) {	 
+	 if (check_state(state, &st->atoms[i]->dirty))
+	    st->atoms[i]->update( st );
+      }
+   }
+
+   memset(state, 0, sizeof(*state));
+}
+
+
+