src/gallium/auxiliary/util/u_dirty_surfaces.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 Luca Barbieri
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  **************************************************************************/
  26
  27 #ifndef U_DIRTY_SURFACES_H_
  28 #define U_DIRTY_SURFACES_H_
  29
  30 #include "pipe/p_state.h"
  31
  32 #include "util/list.h"
  33 #include "util/u_math.h"
  34
  35 struct pipe_context;
  36
  37 typedef void (*util_dirty_surface_flush_t) (struct pipe_context *, struct pipe_surface *);
  38
  39 struct util_dirty_surfaces
  40 {
  41    struct list_head dirty_list;
  42 };
  43
  44 struct util_dirty_surface
  45 {
  46    struct pipe_surface base;
  47    struct list_head dirty_list;
  48 };
  49
  50 static inline void
  51 util_dirty_surfaces_init(struct util_dirty_surfaces *ds)
  52 {
  53    LIST_INITHEAD(&ds->dirty_list);
  54 }
  55
  56 static inline void
  57 util_dirty_surfaces_use_for_sampling(struct pipe_context *pipe, struct util_dirty_surfaces *dss, util_dirty_surface_flush_t flush)
  58 {
  59    struct list_head *p, *next;
  60    for(p = dss->dirty_list.next; p != &dss->dirty_list; p = next)
  61    {
  62       struct util_dirty_surface *ds = LIST_ENTRY(struct util_dirty_surface, p, dirty_list);
  63       next = p->next;
  64
  65       flush(pipe, &ds->base);
  66    }
  67 }
  68
  69 static inline void
  70 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)
  71 {
  72    struct list_head *p, *next;
  73    if(first > last)
  74       return;
  75    for(p = dss->dirty_list.next; p != &dss->dirty_list; p = next)
  76    {
  77       struct util_dirty_surface *ds = LIST_ENTRY(struct util_dirty_surface, p, dirty_list);
  78       next = p->next;
  79
  80       if(ds->base.u.tex.level >= first && ds->base.u.tex.level <= last)
  81          flush(pipe, &ds->base);
  82    }
  83 }
  84
  85 static inline void
  86 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)
  87 {
  88    if(!LIST_IS_EMPTY(&dss->dirty_list))
  89       util_dirty_surfaces_use_levels_for_sampling(pipe, dss, (unsigned)pss->min_lod + psv->u.tex.first_level,
  90                                                   MIN2((unsigned)ceilf(pss->max_lod) + psv->u.tex.first_level, psv->u.tex.last_level), flush);
  91 }
  92
  93 static inline void
  94 util_dirty_surface_init(struct util_dirty_surface *ds)
  95 {
  96    LIST_INITHEAD(&ds->dirty_list);
  97 }
  98
  99 static inline boolean
 100 util_dirty_surface_is_dirty(struct util_dirty_surface *ds)
 101 {
 102    return !LIST_IS_EMPTY(&ds->dirty_list);
 103 }
 104
 105 static inline void
 106 util_dirty_surface_set_dirty(struct util_dirty_surfaces *dss, struct util_dirty_surface *ds)
 107 {
 108    if(LIST_IS_EMPTY(&ds->dirty_list))
 109       LIST_ADDTAIL(&ds->dirty_list, &dss->dirty_list);
 110 }
 111
 112 static inline void
 113 util_dirty_surface_set_clean(struct util_dirty_surfaces *dss, struct util_dirty_surface *ds)
 114 {
 115    if(!LIST_IS_EMPTY(&ds->dirty_list))
 116       LIST_DELINIT(&ds->dirty_list);
 117 }
 118
 119 #endif