1 files changed, 392 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_scene.c b/src/gallium/drivers/llvmpipe/lp_scene.c
new file mode 100644
index 00000000000..0421c506d82
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_scene.c
@@ -0,0 +1,392 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * 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 VMWARE 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 "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_inlines.h"
+#include "util/u_simple_list.h"
+#include "lp_scene.h"
+
+
+struct lp_scene *
+lp_scene_create(void)
+{
+   struct lp_scene *scene = CALLOC_STRUCT(lp_scene);
+   if (scene)
+      lp_scene_init(scene);
+   return scene;
+}
+
+
+void
+lp_scene_destroy(struct lp_scene *scene)
+{
+   lp_scene_reset(scene);
+   lp_scene_free_bin_data(scene);
+   FREE(scene);
+}
+
+
+void
+lp_scene_init(struct lp_scene *scene)
+{
+   unsigned i, j;
+   for (i = 0; i < TILES_X; i++)
+      for (j = 0; j < TILES_Y; j++) {
+         struct cmd_bin *bin = lp_scene_get_bin(scene, i, j);
+         bin->commands.head = bin->commands.tail = CALLOC_STRUCT(cmd_block);
+      }
+
+   scene->data.head =
+      scene->data.tail = CALLOC_STRUCT(data_block);
+
+   make_empty_list(&scene->textures);
+
+   pipe_mutex_init(scene->mutex);
+}
+
+
+/**
+ * Check if the scene's bins are all empty.
+ * For debugging purposes.
+ */
+boolean
+lp_scene_is_empty(struct lp_scene *scene )
+{
+   unsigned x, y;
+
+   for (y = 0; y < TILES_Y; y++) {
+      for (x = 0; x < TILES_X; x++) {
+         const struct cmd_bin *bin = lp_scene_get_bin(scene, x, y);
+         const struct cmd_block_list *list = &bin->commands;
+         if (list->head != list->tail || list->head->count > 0) {
+            return FALSE;
+         }
+      }
+   }
+   return TRUE;
+}
+
+
+void
+lp_scene_bin_reset(struct lp_scene *scene, unsigned x, unsigned y)
+{
+   struct cmd_bin *bin = lp_scene_get_bin(scene, x, y);
+   struct cmd_block_list *list = &bin->commands;
+   struct cmd_block *block;
+   struct cmd_block *tmp;
+
+   for (block = list->head; block != list->tail; block = tmp) {
+      tmp = block->next;
+      FREE(block);
+   }
+
+   assert(list->tail->next == NULL);
+   list->head = list->tail;
+   list->head->count = 0;
+}
+
+
+/**
+ * Set scene to empty state.
+ */
+void
+lp_scene_reset(struct lp_scene *scene )
+{
+   unsigned i, j;
+
+   /* Free all but last binner command lists:
+    */
+   for (i = 0; i < scene->tiles_x; i++) {
+      for (j = 0; j < scene->tiles_y; j++) {
+         lp_scene_bin_reset(scene, i, j);
+      }
+   }
+
+   assert(lp_scene_is_empty(scene));
+
+   /* Free all but last binned data block:
+    */
+   {
+      struct data_block_list *list = &scene->data;
+      struct data_block *block, *tmp;
+
+      for (block = list->head; block != list->tail; block = tmp) {
+         tmp = block->next;
+         FREE(block);
+      }
+         
+      assert(list->tail->next == NULL);
+      list->head = list->tail;
+      list->head->used = 0;
+   }
+
+   /* Release texture refs
+    */
+   {
+      struct texture_ref *ref, *next, *ref_list = &scene->textures;
+      for (ref = ref_list->next; ref != ref_list; ref = next) {
+         next = next_elem(ref);
+         pipe_texture_reference(&ref->texture, NULL);
+         FREE(ref);
+      }
+      make_empty_list(ref_list);
+   }
+}
+
+
+/**
+ * Free all data associated with the given bin, but don't free(scene).
+ */
+void
+lp_scene_free_bin_data(struct lp_scene *scene)
+{
+   unsigned i, j;
+
+   for (i = 0; i < TILES_X; i++)
+      for (j = 0; j < TILES_Y; j++) {
+         struct cmd_bin *bin = lp_scene_get_bin(scene, i, j);
+         /* lp_reset_scene() should have been already called */
+         assert(bin->commands.head == bin->commands.tail);
+         FREE(bin->commands.head);
+         bin->commands.head = NULL;
+         bin->commands.tail = NULL;
+      }
+
+   FREE(scene->data.head);
+   scene->data.head = NULL;
+
+   pipe_mutex_destroy(scene->mutex);
+}
+
+
+void
+lp_scene_set_framebuffer_size( struct lp_scene *scene,
+                               unsigned width, unsigned height )
+{
+   assert(lp_scene_is_empty(scene));
+
+   scene->tiles_x = align(width, TILE_SIZE) / TILE_SIZE;
+   scene->tiles_y = align(height, TILE_SIZE) / TILE_SIZE;
+}
+
+
+void
+lp_bin_new_cmd_block( struct cmd_block_list *list )
+{
+   struct cmd_block *block = MALLOC_STRUCT(cmd_block);
+   list->tail->next = block;
+   list->tail = block;
+   block->next = NULL;
+   block->count = 0;
+}
+
+
+void
+lp_bin_new_data_block( struct data_block_list *list )
+{
+   struct data_block *block = MALLOC_STRUCT(data_block);
+   list->tail->next = block;
+   list->tail = block;
+   block->next = NULL;
+   block->used = 0;
+}
+
+
+/** Return number of bytes used for all bin data within a scene */
+unsigned
+lp_scene_data_size( const struct lp_scene *scene )
+{
+   unsigned size = 0;
+   const struct data_block *block;
+   for (block = scene->data.head; block; block = block->next) {
+      size += block->used;
+   }
+   return size;
+}
+
+
+/** Return number of bytes used for a single bin */
+unsigned
+lp_scene_bin_size( const struct lp_scene *scene, unsigned x, unsigned y )
+{
+   struct cmd_bin *bin = lp_scene_get_bin((struct lp_scene *) scene, x, y);
+   const struct cmd_block *cmd;
+   unsigned size = 0;
+   for (cmd = bin->commands.head; cmd; cmd = cmd->next) {
+      size += (cmd->count *
+               (sizeof(lp_rast_cmd) + sizeof(union lp_rast_cmd_arg)));
+   }
+   return size;
+}
+
+
+/**
+ * Add a reference to a texture by the scene.
+ */
+void
+lp_scene_texture_reference( struct lp_scene *scene,
+                            struct pipe_texture *texture )
+{
+   struct texture_ref *ref = CALLOC_STRUCT(texture_ref);
+   if (ref) {
+      struct texture_ref *ref_list = &scene->textures;
+      pipe_texture_reference(&ref->texture, texture);
+      insert_at_tail(ref_list, ref);
+   }
+}
+
+
+/**
+ * Does this scene have a reference to the given texture?
+ */
+boolean
+lp_scene_is_textured_referenced( const struct lp_scene *scene,
+                                 const struct pipe_texture *texture )
+{
+   const struct texture_ref *ref_list = &scene->textures;
+   const struct texture_ref *ref;
+   foreach (ref, ref_list) {
+      if (ref->texture == texture)
+         return TRUE;
+   }
+   return FALSE;
+}
+
+
+/**
+ * Return last command in the bin
+ */
+static lp_rast_cmd
+lp_get_last_command( const struct cmd_bin *bin )
+{
+   const struct cmd_block *tail = bin->commands.tail;
+   const unsigned i = tail->count;
+   if (i > 0)
+      return tail->cmd[i - 1];
+   else
+      return NULL;
+}
+
+
+/**
+ * Replace the arg of the last command in the bin.
+ */
+static void
+lp_replace_last_command_arg( struct cmd_bin *bin,
+                             const union lp_rast_cmd_arg arg )
+{
+   struct cmd_block *tail = bin->commands.tail;
+   const unsigned i = tail->count;
+   assert(i > 0);
+   tail->arg[i - 1] = arg;
+}
+
+
+
+/**
+ * Put a state-change command into all bins.
+ * If we find that the last command in a bin was also a state-change
+ * command, we can simply replace that one with the new one.
+ */
+void
+lp_scene_bin_state_command( struct lp_scene *scene,
+                            lp_rast_cmd cmd,
+                            const union lp_rast_cmd_arg arg )
+{
+   unsigned i, j;
+   for (i = 0; i < scene->tiles_x; i++) {
+      for (j = 0; j < scene->tiles_y; j++) {
+         struct cmd_bin *bin = lp_scene_get_bin(scene, i, j);
+         lp_rast_cmd last_cmd = lp_get_last_command(bin);
+         if (last_cmd == cmd) {
+            lp_replace_last_command_arg(bin, arg);
+         }
+         else {
+            lp_scene_bin_command( scene, i, j, cmd, arg );
+         }
+      }
+   }
+}
+
+
+/** advance curr_x,y to the next bin */
+static boolean
+next_bin(struct lp_scene *scene)
+{
+   scene->curr_x++;
+   if (scene->curr_x >= scene->tiles_x) {
+      scene->curr_x = 0;
+      scene->curr_y++;
+   }
+   if (scene->curr_y >= scene->tiles_y) {
+      /* no more bins */
+      return FALSE;
+   }
+   return TRUE;
+}
+
+
+void
+lp_scene_bin_iter_begin( struct lp_scene *scene )
+{
+   scene->curr_x = scene->curr_y = -1;
+}
+
+
+/**
+ * Return pointer to next bin to be rendered.
+ * The lp_scene::curr_x and ::curr_y fields will be advanced.
+ * Multiple rendering threads will call this function to get a chunk
+ * of work (a bin) to work on.
+ */
+struct cmd_bin *
+lp_scene_bin_iter_next( struct lp_scene *scene, int *bin_x, int *bin_y )
+{
+   struct cmd_bin *bin = NULL;
+
+   pipe_mutex_lock(scene->mutex);
+
+   if (scene->curr_x < 0) {
+      /* first bin */
+      scene->curr_x = 0;
+      scene->curr_y = 0;
+   }
+   else if (!next_bin(scene)) {
+      /* no more bins left */
+      goto end;
+   }
+
+   bin = lp_scene_get_bin(scene, scene->curr_x, scene->curr_y);
+   *bin_x = scene->curr_x;
+   *bin_y = scene->curr_y;
+
+end:
+   /*printf("return bin %p at %d, %d\n", (void *) bin, *bin_x, *bin_y);*/
+   pipe_mutex_unlock(scene->mutex);
+   return bin;
+}