src/gallium/drivers/ilo/ilo_blit.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2012-2013 LunarG, Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Chia-I Wu <olv@lunarg.com>
  26  */
  27
  28 #ifndef ILO_BLIT_H
  29 #define ILO_BLIT_H
  30
  31 #include "ilo_common.h"
  32 #include "ilo_context.h"
  33 #include "ilo_gpe.h"
  34 #include "ilo_resource.h"
  35
  36 struct ilo_context;
  37
  38 void
  39 ilo_blit_resolve_slices_for_hiz(struct ilo_context *ilo,
  40                                 struct pipe_resource *res, unsigned level,
  41                                 unsigned first_slice, unsigned num_slices,
  42                                 unsigned resolve_flags);
  43
  44 static inline void
  45 ilo_blit_resolve_slices(struct ilo_context *ilo,
  46                         struct pipe_resource *res, unsigned level,
  47                         unsigned first_slice, unsigned num_slices,
  48                         unsigned resolve_flags)
  49 {
  50    struct ilo_texture *tex;
  51    unsigned slice_mask;
  52
  53    if (res->target == PIPE_BUFFER)
  54       return;
  55
  56    tex = ilo_texture(res);
  57
  58    /*
  59     * This function is called frequently and we need to make it run faster.
  60     * As it is only used to resolve HiZ right now, return early when there is
  61     * no HiZ.
  62     */
  63    if (!ilo_texture_can_enable_hiz(tex, level, first_slice, num_slices))
  64       return;
  65
  66    if (ilo_texture_can_enable_hiz(tex, level, first_slice, num_slices)) {
  67       ilo_blit_resolve_slices_for_hiz(ilo, res, level,
  68             first_slice, num_slices, resolve_flags);
  69    }
  70
  71    slice_mask =
  72       ILO_TEXTURE_CPU_WRITE |
  73       ILO_TEXTURE_BLT_WRITE |
  74       ILO_TEXTURE_RENDER_WRITE;
  75    /* when there is a new writer, we may need to clear ILO_TEXTURE_CLEAR */
  76    if (resolve_flags & slice_mask)
  77       slice_mask |= ILO_TEXTURE_CLEAR;
  78
  79    ilo_texture_set_slice_flags(tex, level,
  80          first_slice, num_slices, slice_mask, resolve_flags);
  81 }
  82
  83 static inline void
  84 ilo_blit_resolve_resource(struct ilo_context *ilo,
  85                           struct pipe_resource *res,
  86                           unsigned resolve_flags)
  87 {
  88    unsigned lv;
  89
  90    for (lv = 0; lv <= res->last_level; lv++) {
  91       const unsigned num_slices = (res->target == PIPE_TEXTURE_3D) ?
  92          u_minify(res->depth0, lv) : res->array_size;
  93
  94       ilo_blit_resolve_slices(ilo, res, lv, 0, num_slices, resolve_flags);
  95    }
  96 }
  97
  98 static inline void
  99 ilo_blit_resolve_surface(struct ilo_context *ilo,
 100                          struct pipe_surface *surf,
 101                          unsigned resolve_flags)
 102 {
 103    if (surf->texture->target == PIPE_BUFFER)
 104       return;
 105
 106    ilo_blit_resolve_slices(ilo, surf->texture,
 107          surf->u.tex.level, surf->u.tex.first_layer,
 108          surf->u.tex.last_layer - surf->u.tex.first_layer + 1,
 109          resolve_flags);
 110 }
 111
 112 static inline void
 113 ilo_blit_resolve_transfer(struct ilo_context *ilo,
 114                           const struct pipe_transfer *xfer)
 115 {
 116    unsigned resolve_flags = 0;
 117
 118    if (xfer->resource->target == PIPE_BUFFER)
 119       return;
 120
 121    if (xfer->usage & PIPE_TRANSFER_READ)
 122       resolve_flags |= ILO_TEXTURE_CPU_READ;
 123    if (xfer->usage & PIPE_TRANSFER_WRITE)
 124       resolve_flags |= ILO_TEXTURE_CPU_WRITE;
 125
 126    ilo_blit_resolve_slices(ilo, xfer->resource, xfer->level,
 127          xfer->box.z, xfer->box.depth, resolve_flags);
 128 }
 129
 130 static inline void
 131 ilo_blit_resolve_view(struct ilo_context *ilo,
 132                       const struct pipe_sampler_view *view)
 133 {
 134    const unsigned resolve_flags = ILO_TEXTURE_RENDER_READ;
 135    unsigned lv;
 136
 137    if (view->texture->target == PIPE_BUFFER)
 138       return;
 139
 140    for (lv = view->u.tex.first_level; lv <= view->u.tex.last_level; lv++) {
 141       unsigned first_slice, num_slices;
 142
 143       if (view->texture->target == PIPE_TEXTURE_3D) {
 144          first_slice = 0;
 145          num_slices = u_minify(view->texture->depth0, lv);
 146       }
 147       else {
 148          first_slice = view->u.tex.first_layer;
 149          num_slices = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 150       }
 151
 152       ilo_blit_resolve_slices(ilo, view->texture,
 153             lv, first_slice, num_slices, resolve_flags);
 154    }
 155 }
 156
 157 static inline void
 158 ilo_blit_resolve_framebuffer(struct ilo_context *ilo)
 159 {
 160    const struct pipe_framebuffer_state *fb = &ilo->fb.state;
 161    unsigned sh, i;
 162
 163    /* Not all bound views are sampled by the shaders.  How do we tell? */
 164    for (sh = 0; sh < Elements(ilo->view); sh++) {
 165       for (i = 0; i < ilo->view[sh].count; i++) {
 166          if (ilo->view[sh].states[i])
 167             ilo_blit_resolve_view(ilo, ilo->view[sh].states[i]);
 168       }
 169    }
 170
 171    for (i = 0; i < fb->nr_cbufs; i++) {
 172       struct pipe_surface *surf = fb->cbufs[i];
 173       if (surf)
 174          ilo_blit_resolve_surface(ilo, surf, ILO_TEXTURE_RENDER_WRITE);
 175    }
 176
 177    if (fb->zsbuf)
 178       ilo_blit_resolve_surface(ilo, fb->zsbuf, ILO_TEXTURE_RENDER_WRITE);
 179 }
 180
 181 void
 182 ilo_init_blit_functions(struct ilo_context *ilo);
 183
 184 #endif /* ILO_BLIT_H */