1 files changed, 103 insertions, 1 deletions

diff --git a/src/gallium/drivers/softpipe/sp_state_sampler.c b/src/gallium/drivers/softpipe/sp_state_sampler.c
index aa2f3f2ccd..714e638048 100644
--- a/src/gallium/drivers/softpipe/sp_state_sampler.c
+++ b/src/gallium/drivers/softpipe/sp_state_sampler.c
@@ -38,15 +38,32 @@
 #include "sp_state.h"
 #include "sp_texture.h"
 #include "sp_tile_cache.h"
+#include "sp_tex_sample.h"
 #include "draw/draw_context.h"
 
 
+struct sp_sampler {
+   struct pipe_sampler_state base;
+   struct sp_sampler_varient *varients;
+   struct sp_sampler_varient *current;
+};
+
+static struct sp_sampler *sp_sampler( struct pipe_sampler_state *sampler )
+{
+   return (struct sp_sampler *)sampler;
+}
+
 
 void *
 softpipe_create_sampler_state(struct pipe_context *pipe,
                               const struct pipe_sampler_state *sampler)
 {
-   return mem_dup(sampler, sizeof(*sampler));
+   struct sp_sampler *sp_sampler = CALLOC_STRUCT(sp_sampler);
+
+   sp_sampler->base = *sampler;
+   sp_sampler->varients = NULL;
+
+   return (void *)sp_sampler;
 }
 
 
@@ -106,10 +123,95 @@ softpipe_set_sampler_textures(struct pipe_context *pipe,
 }
 
 
+
+static struct sp_sampler_varient *
+get_sampler_varient( struct sp_sampler *sampler,
+                     struct pipe_texture *texture,
+                     unsigned processor )
+{
+   struct softpipe_texture *sp_texture = softpipe_texture(texture);
+   struct sp_sampler_varient *v = NULL;
+   union sp_sampler_key key;
+
+   key.bits.target = sp_texture->base.target;
+   key.bits.is_pot = sp_texture->pot;
+   key.bits.processor = processor;
+   key.bits.pad = 0;
+
+   if (sampler->current && 
+       key.value == sampler->current->key.value) {
+      v = sampler->current;
+   }
+
+   if (v == NULL) {
+      for (v = sampler->varients; v; v = v->next)
+         if (v->key.value == key.value)
+            break;
+
+      if (v == NULL) {
+         v = sp_create_sampler_varient( &sampler->base, key );
+         v->next = sampler->varients;
+         sampler->varients = v;
+      }
+   }
+   
+   sampler->current = v;
+   return v;
+}
+
+
+
+
+void
+softpipe_reset_sampler_varients(struct softpipe_context *softpipe)
+{
+   int i;
+
+   /* It's a bit hard to build these samplers ahead of time -- don't
+    * really know which samplers are going to be used for vertex and
+    * fragment programs.
+    */
+   for (i = 0; i <= softpipe->vs->max_sampler; i++) {
+      if (softpipe->sampler[i]) {
+         softpipe->tgsi.vert_samplers_list[i] = 
+            get_sampler_varient( sp_sampler(softpipe->sampler[i]),
+                                 softpipe->texture[i],
+                                 TGSI_PROCESSOR_VERTEX );
+
+         sp_sampler_varient_bind_texture( softpipe->tgsi.vert_samplers_list[i], 
+                                          softpipe->tex_cache[i],
+                                          softpipe->texture[i] );
+      }
+   }
+
+   for (i = 0; i <= softpipe->fs->info.file_max[TGSI_FILE_SAMPLER]; i++) {
+      if (softpipe->sampler[i]) {
+         softpipe->tgsi.frag_samplers_list[i] =
+            get_sampler_varient( sp_sampler(softpipe->sampler[i]),
+                                 softpipe->texture[i],
+                                 TGSI_PROCESSOR_FRAGMENT );
+
+         sp_sampler_varient_bind_texture( softpipe->tgsi.frag_samplers_list[i], 
+                                          softpipe->tex_cache[i],
+                                          softpipe->texture[i] );
+      }
+   }
+}
+
+
+
 void
 softpipe_delete_sampler_state(struct pipe_context *pipe,
                               void *sampler)
 {
+   struct sp_sampler *sp_sampler = (struct sp_sampler *)sampler;
+   struct sp_sampler_varient *v, *tmp;
+
+   for (v = sp_sampler->varients; v; v = tmp) {
+      tmp = v->next;
+      sp_sampler_varient_destroy(v);
+   }
+
    FREE( sampler );
 }