From 7c99d7fe60e7bb0b7cf103a851aeef4614278ca6 Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Thu, 15 May 2008 12:39:08 +0100
Subject: draw: create specialized vs varients incorporating fetch & emit

---
 src/gallium/auxiliary/draw/draw_vs.c | 83 +++++++++++++++++++++++++++++++++++-
 1 file changed, 82 insertions(+), 1 deletion(-)

(limited to 'src/gallium/auxiliary/draw/draw_vs.c')

diff --git a/src/gallium/auxiliary/draw/draw_vs.c b/src/gallium/auxiliary/draw/draw_vs.c
index 4142dd9..9b899d4 100644
--- a/src/gallium/auxiliary/draw/draw_vs.c
+++ b/src/gallium/auxiliary/draw/draw_vs.c
@@ -36,6 +36,8 @@
 #include "draw_private.h"
 #include "draw_context.h"
 #include "draw_vs.h"
+#include "translate/translate.h"
+#include "translate/translate_cache.h"
 
 
 
@@ -90,11 +92,25 @@ boolean
 draw_vs_init( struct draw_context *draw )
 {
    tgsi_exec_machine_init(&draw->vs.machine);
+
    /* FIXME: give this machine thing a proper constructor:
     */
    draw->vs.machine.Inputs = align_malloc(PIPE_MAX_ATTRIBS * sizeof(struct tgsi_exec_vector), 16);
-   draw->vs.machine.Outputs = align_malloc(PIPE_MAX_ATTRIBS * sizeof(struct tgsi_exec_vector), 16);
+   if (!draw->vs.machine.Inputs)
+      return FALSE;
 
+   draw->vs.machine.Outputs = align_malloc(PIPE_MAX_ATTRIBS * sizeof(struct tgsi_exec_vector), 16);
+   if (!draw->vs.machine.Outputs)
+      return FALSE;
+
+   draw->vs.emit_cache = translate_cache_create();
+   if (!draw->vs.emit_cache) 
+      return FALSE;
+      
+   draw->vs.fetch_cache = translate_cache_create();
+   if (!draw->vs.fetch_cache) 
+      return FALSE;
+      
    return TRUE;
 }
 
@@ -107,6 +123,71 @@ draw_vs_destroy( struct draw_context *draw )
    if (draw->vs.machine.Outputs)
       align_free(draw->vs.machine.Outputs);
 
+   if (draw->vs.fetch_cache)
+      translate_cache_destroy(draw->vs.fetch_cache);
+
+   if (draw->vs.emit_cache)
+      translate_cache_destroy(draw->vs.emit_cache);
+
    tgsi_exec_machine_free_data(&draw->vs.machine);
 
 }
+
+
+struct draw_vs_varient *
+draw_vs_lookup_varient( struct draw_vertex_shader *vs,
+                        const struct draw_vs_varient_key *key )
+{
+   struct draw_vs_varient *varient;
+   unsigned i;
+
+   /* Lookup existing varient: 
+    */
+   for (i = 0; i < vs->nr_varients; i++)
+      if (draw_vs_varient_key_compare(key, &vs->varient[i]->key) == 0)
+         return vs->varient[i];
+   
+   /* Else have to create a new one: 
+    */
+   varient = vs->create_varient( vs, key );
+   if (varient == NULL)
+      return NULL;
+
+   /* Add it to our list: 
+    */
+   assert(vs->nr_varients < Elements(vs->varient));
+   vs->varient[vs->nr_varients++] = varient;
+
+   /* Done 
+    */
+   return varient;
+}
+
+
+struct translate *
+draw_vs_get_fetch( struct draw_context *draw,
+                   struct translate_key *key )
+{
+   if (!draw->vs.fetch ||
+       translate_key_compare(&draw->vs.fetch->key, key) != 0) 
+   {
+      translate_key_sanitize(key);
+      draw->vs.fetch = translate_cache_find(draw->vs.fetch_cache, key);
+   }
+   
+   return draw->vs.fetch;
+}
+
+struct translate *
+draw_vs_get_emit( struct draw_context *draw,
+                  struct translate_key *key )
+{
+   if (!draw->vs.emit ||
+       translate_key_compare(&draw->vs.emit->key, key) != 0) 
+   {
+      translate_key_sanitize(key);
+      draw->vs.emit = translate_cache_find(draw->vs.emit_cache, key);
+   }
+   
+   return draw->vs.emit;
+}
-- 
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