1 files changed, 51 insertions, 8 deletions

diff --git a/mesalib/src/mesa/vbo/vbo_save_api.c b/mesalib/src/mesa/vbo/vbo_save_api.c
index b4c90a05c..749071753 100644
--- a/mesalib/src/mesa/vbo/vbo_save_api.c
+++ b/mesalib/src/mesa/vbo/vbo_save_api.c
@@ -301,6 +301,47 @@ _save_reset_counters(struct gl_context *ctx)
    save->dangling_attr_ref = 0;
 }
 
+/**
+ * For a list of prims, try merging prims that can just be extensions of the
+ * previous prim.
+ */
+static void
+vbo_merge_prims(struct gl_context *ctx,
+                struct _mesa_prim *prim_list,
+                GLuint *prim_count)
+{
+   GLuint i;
+   struct _mesa_prim *prev_prim = prim_list;
+
+   for (i = 1; i < *prim_count; i++) {
+      struct _mesa_prim *this_prim = prim_list + i;
+
+      if (this_prim->mode == prev_prim->mode &&
+          this_prim->mode == GL_QUADS &&
+          this_prim->count % 4 == 0 &&
+          prev_prim->count % 4 == 0 &&
+          this_prim->start == prev_prim->start + prev_prim->count &&
+          this_prim->basevertex == prev_prim->basevertex &&
+          this_prim->num_instances == prev_prim->num_instances &&
+          this_prim->base_instance == prev_prim->base_instance) {
+         /* We've found a prim that just extend the previous one.  Tack it
+          * onto the previous one, and let this primitive struct get dropped.
+          */
+         prev_prim->count += this_prim->count;
+         prev_prim->end = this_prim->end;
+         continue;
+      }
+
+      /* If any previous primitives have been dropped, then we need to copy
+       * this later one into the next available slot.
+       */
+      prev_prim++;
+      if (prev_prim != this_prim)
+         *prev_prim = *this_prim;
+   }
+
+   *prim_count = prev_prim - prim_list + 1;
+}
 
 /**
  * Insert the active immediate struct onto the display list currently
@@ -380,6 +421,8 @@ _save_compile_vertex_list(struct gl_context *ctx)
     */
    save->copied.nr = _save_copy_vertices(ctx, node, save->buffer);
 
+   vbo_merge_prims(ctx, node->prim, &node->prim_count);
+
    /* Deal with GL_COMPILE_AND_EXECUTE:
     */
    if (ctx->ExecuteFlag) {
@@ -1595,14 +1638,14 @@ vbo_print_vertex_list(struct gl_context *ctx, void *data)
 
    for (i = 0; i < node->prim_count; i++) {
       struct _mesa_prim *prim = &node->prim[i];
-      _mesa_debug(NULL, "   prim %d: %s%s %d..%d %s %s\n",
-                  i,
-                  _mesa_lookup_prim_by_nr(prim->mode),
-                  prim->weak ? " (weak)" : "",
-                  prim->start,
-                  prim->start + prim->count,
-                  (prim->begin) ? "BEGIN" : "(wrap)",
-                  (prim->end) ? "END" : "(wrap)");
+      printf("   prim %d: %s%s %d..%d %s %s\n",
+             i,
+             _mesa_lookup_prim_by_nr(prim->mode),
+             prim->weak ? " (weak)" : "",
+             prim->start,
+             prim->start + prim->count,
+             (prim->begin) ? "BEGIN" : "(wrap)",
+             (prim->end) ? "END" : "(wrap)");
    }
 }