1 files changed, 88 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_dirty_surfaces.h b/src/gallium/auxiliary/util/u_dirty_surfaces.h
new file mode 100644
index 00000000000..99f260bf967
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_dirty_surfaces.h
@@ -0,0 +1,88 @@
+#ifndef U_DIRTY_SURFACES_H_
+#define U_DIRTY_SURFACES_H_
+
+#include "util/u_double_list.h"
+#include "util/u_math.h"
+
+typedef void (*util_dirty_surface_flush_t) (struct pipe_context *, struct pipe_surface *);
+
+struct util_dirty_surfaces
+{
+   struct list_head dirty_list;
+};
+
+struct util_dirty_surface
+{
+   struct pipe_surface base;
+   struct list_head dirty_list;
+};
+
+static INLINE void
+util_dirty_surfaces_init(struct util_dirty_surfaces *ds)
+{
+   LIST_INITHEAD(&ds->dirty_list);
+}
+
+static INLINE void
+util_dirty_surfaces_use_for_sampling(struct pipe_context *pipe, struct util_dirty_surfaces *dss, util_dirty_surface_flush_t flush)
+{
+   struct list_head *p, *next;
+   for(p = dss->dirty_list.next; p != &dss->dirty_list; p = next)
+   {
+      struct util_dirty_surface *ds = LIST_ENTRY(struct util_dirty_surface, p, dirty_list);
+      next = p->next;
+
+      flush(pipe, &ds->base);
+   }
+}
+
+static INLINE void
+util_dirty_surfaces_use_levels_for_sampling(struct pipe_context *pipe, struct util_dirty_surfaces *dss, unsigned first, unsigned last, util_dirty_surface_flush_t flush)
+{
+   struct list_head *p, *next;
+   if(first > last)
+      return;
+   for(p = dss->dirty_list.next; p != &dss->dirty_list; p = next)
+   {
+      struct util_dirty_surface *ds = LIST_ENTRY(struct util_dirty_surface, p, dirty_list);
+      next = p->next;
+
+      if(ds->base.level >= first && ds->base.level <= last)
+	 flush(pipe, &ds->base);
+   }
+}
+
+static INLINE void
+util_dirty_surfaces_use_for_sampling_with(struct pipe_context *pipe, struct util_dirty_surfaces *dss, struct pipe_sampler_view *psv, struct pipe_sampler_state *pss, util_dirty_surface_flush_t flush)
+{
+   if(!LIST_IS_EMPTY(&dss->dirty_list))
+      util_dirty_surfaces_use_levels_for_sampling(pipe, dss, (unsigned)pss->min_lod + psv->first_level, MIN2((unsigned)ceilf(pss->max_lod) + psv->first_level, psv->last_level), flush);
+}
+
+static INLINE void
+util_dirty_surface_init(struct util_dirty_surface *ds)
+{
+   LIST_INITHEAD(&ds->dirty_list);
+}
+
+static INLINE boolean
+util_dirty_surface_is_dirty(struct util_dirty_surface *ds)
+{
+   return !LIST_IS_EMPTY(&ds->dirty_list);
+}
+
+static INLINE void
+util_dirty_surface_set_dirty(struct util_dirty_surfaces *dss, struct util_dirty_surface *ds)
+{
+   if(LIST_IS_EMPTY(&ds->dirty_list))
+      LIST_ADDTAIL(&ds->dirty_list, &dss->dirty_list);
+}
+
+static INLINE void
+util_dirty_surface_set_clean(struct util_dirty_surfaces *dss, struct util_dirty_surface *ds)
+{
+   if(!LIST_IS_EMPTY(&ds->dirty_list))
+      LIST_DELINIT(&ds->dirty_list);
+}
+
+#endif