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_state.h"
  34 #include "ilo_resource.h"
  35
  36 void
  37 ilo_blit_resolve_slices_for_hiz(struct ilo_context *ilo,
  38                                 struct pipe_resource *res, unsigned level,
  39                                 unsigned first_slice, unsigned num_slices,
  40                                 unsigned resolve_flags);
  41
  42 static inline void
  43 ilo_blit_resolve_slices(struct ilo_context *ilo,
  44                         struct pipe_resource *res, unsigned level,
  45                         unsigned first_slice, unsigned num_slices,
  46                         unsigned resolve_flags)
  47 {
  48    struct ilo_texture *tex;
  49    unsigned slice_mask;
  50
  51    if (res->target == PIPE_BUFFER)
  52       return;
  53
  54    tex = ilo_texture(res);
  55
  56    /*
  57     * This function is called frequently and we need to make it run faster.
  58     * As it is only used to resolve HiZ right now, return early when there is
  59     * no HiZ.
  60     */
  61    if (!ilo_image_can_enable_aux(&tex->image, level))
  62       return;
  63
  64    if (ilo_image_can_enable_aux(&tex->image, level)) {
  65       ilo_blit_resolve_slices_for_hiz(ilo, res, level,
  66             first_slice, num_slices, resolve_flags);
  67    }
  68
  69    slice_mask =
  70       ILO_TEXTURE_CPU_WRITE |
  71       ILO_TEXTURE_BLT_WRITE |
  72       ILO_TEXTURE_RENDER_WRITE;
  73    /* when there is a new writer, we may need to clear ILO_TEXTURE_CLEAR */
  74    if (resolve_flags & slice_mask)
  75       slice_mask |= ILO_TEXTURE_CLEAR;
  76
  77    ilo_texture_set_slice_flags(tex, level,
  78          first_slice, num_slices, slice_mask, resolve_flags);
  79 }
  80
  81 static inline void
  82 ilo_blit_resolve_resource(struct ilo_context *ilo,
  83                           struct pipe_resource *res,
  84                           unsigned resolve_flags)
  85 {
  86    unsigned lv;
  87
  88    for (lv = 0; lv <= res->last_level; lv++) {
  89       const unsigned num_slices = (res->target == PIPE_TEXTURE_3D) ?
  90          u_minify(res->depth0, lv) : res->array_size;
  91
  92       ilo_blit_resolve_slices(ilo, res, lv, 0, num_slices, resolve_flags);
  93    }
  94 }
  95
  96 static inline void
  97 ilo_blit_resolve_surface(struct ilo_context *ilo,
  98                          struct pipe_surface *surf,
  99                          unsigned resolve_flags)
 100 {
 101    if (surf->texture->target == PIPE_BUFFER)
 102       return;
 103
 104    ilo_blit_resolve_slices(ilo, surf->texture,
 105          surf->u.tex.level, surf->u.tex.first_layer,
 106          surf->u.tex.last_layer - surf->u.tex.first_layer + 1,
 107          resolve_flags);
 108 }
 109
 110 static inline void
 111 ilo_blit_resolve_transfer(struct ilo_context *ilo,
 112                           const struct pipe_transfer *xfer)
 113 {
 114    unsigned resolve_flags = 0;
 115
 116    if (xfer->resource->target == PIPE_BUFFER)
 117       return;
 118
 119    if (xfer->usage & PIPE_TRANSFER_READ)
 120       resolve_flags |= ILO_TEXTURE_CPU_READ;
 121    if (xfer->usage & PIPE_TRANSFER_WRITE)
 122       resolve_flags |= ILO_TEXTURE_CPU_WRITE;
 123
 124    ilo_blit_resolve_slices(ilo, xfer->resource, xfer->level,
 125          xfer->box.z, xfer->box.depth, resolve_flags);
 126 }
 127
 128 static inline void
 129 ilo_blit_resolve_view(struct ilo_context *ilo,
 130                       const struct pipe_sampler_view *view)
 131 {
 132    const unsigned resolve_flags = ILO_TEXTURE_RENDER_READ;
 133    unsigned lv;
 134
 135    if (view->texture->target == PIPE_BUFFER)
 136       return;
 137
 138    for (lv = view->u.tex.first_level; lv <= view->u.tex.last_level; lv++) {
 139       unsigned first_slice, num_slices;
 140
 141       if (view->texture->target == PIPE_TEXTURE_3D) {
 142          first_slice = 0;
 143          num_slices = u_minify(view->texture->depth0, lv);
 144       }
 145       else {
 146          first_slice = view->u.tex.first_layer;
 147          num_slices = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 148       }
 149
 150       ilo_blit_resolve_slices(ilo, view->texture,
 151             lv, first_slice, num_slices, resolve_flags);
 152    }
 153 }
 154
 155 static inline void
 156 ilo_blit_resolve_framebuffer(struct ilo_context *ilo)
 157 {
 158    struct ilo_state_vector *vec = &ilo->state_vector;
 159    const struct pipe_framebuffer_state *fb = &vec->fb.state;
 160    unsigned sh, i;
 161
 162    /* Not all bound views are sampled by the shaders.  How do we tell? */
 163    for (sh = 0; sh < Elements(vec->view); sh++) {
 164       for (i = 0; i < vec->view[sh].count; i++) {
 165          if (vec->view[sh].states[i])
 166             ilo_blit_resolve_view(ilo, vec->view[sh].states[i]);
 167       }
 168    }
 169
 170    for (i = 0; i < fb->nr_cbufs; i++) {
 171       struct pipe_surface *surf = fb->cbufs[i];
 172       if (surf)
 173          ilo_blit_resolve_surface(ilo, surf, ILO_TEXTURE_RENDER_WRITE);
 174    }
 175
 176    if (fb->zsbuf)
 177       ilo_blit_resolve_surface(ilo, fb->zsbuf, ILO_TEXTURE_RENDER_WRITE);
 178 }
 179
 180 void
 181 ilo_init_blit_functions(struct ilo_context *ilo);
 182
 183 #endif /* ILO_BLIT_H */