src/gallium/drivers/nv50/nv50_miptree.c

   1 /*
   2  * Copyright 2008 Ben Skeggs
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include "pipe/p_state.h"
  24 #include "pipe/p_defines.h"
  25 #include "pipe/p_inlines.h"
  26
  27 #include "nv50_context.h"
  28
  29 static struct pipe_texture *
  30 nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *tmp)
  31 {
  32         struct pipe_winsys *ws = pscreen->winsys;
  33         struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
  34         struct pipe_texture *pt = &mt->base;
  35         unsigned usage, width = tmp->width[0], height = tmp->height[0];
  36         unsigned depth = tmp->depth[0];
  37         int i, l;
  38
  39         mt->base = *tmp;
  40         mt->base.refcount = 1;
  41         mt->base.screen = pscreen;
  42
  43         usage = PIPE_BUFFER_USAGE_PIXEL;
  44         switch (pt->format) {
  45         case PIPE_FORMAT_Z24S8_UNORM:
  46         case PIPE_FORMAT_Z16_UNORM:
  47                 usage |= NOUVEAU_BUFFER_USAGE_ZETA;
  48                 break;
  49         default:
  50                 break;
  51         }
  52
  53         switch (pt->target) {
  54         case PIPE_TEXTURE_3D:
  55                 mt->image_nr = pt->depth[0];
  56                 break;
  57         case PIPE_TEXTURE_CUBE:
  58                 mt->image_nr = 6;
  59                 break;
  60         default:
  61                 mt->image_nr = 1;
  62                 break;
  63         }
  64
  65         for (l = 0; l <= pt->last_level; l++) {
  66                 struct nv50_miptree_level *lvl = &mt->level[l];
  67
  68                 pt->width[l] = width;
  69                 pt->height[l] = height;
  70                 pt->depth[l] = depth;
  71                 pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
  72                 pt->nblocksy[l] = pf_get_nblocksy(&pt->block, width);
  73
  74                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
  75                 lvl->image = CALLOC(mt->image_nr, sizeof(struct pipe_buffer *));
  76         }
  77
  78         for (i = 0; i < mt->image_nr; i++) {
  79                 for (l = 0; l <= pt->last_level; l++) {
  80                         struct nv50_miptree_level *lvl = &mt->level[l];
  81                         int size;
  82
  83                         size  = align(pt->width[l], 8) * pt->block.size;
  84                         size  = align(size, 64);
  85                         size *= align(pt->height[l], 8) * pt->block.size;
  86
  87                         lvl->image[i] = ws->buffer_create(ws, 256, 0, size);
  88                         lvl->image_offset[i] = mt->total_size;
  89
  90                         mt->total_size += size;
  91                 }
  92         }
  93
  94         mt->buffer = ws->buffer_create(ws, 256, usage, mt->total_size);
  95         if (!mt->buffer) {
  96                 FREE(mt);
  97                 return NULL;
  98         }
  99
 100         return &mt->base;
 101 }
 102
 103 static void
 104 nv50_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
 105 {
 106         struct pipe_texture *pt = *ppt;
 107
 108         *ppt = NULL;
 109
 110         if (--pt->refcount <= 0) {
 111                 struct nv50_miptree *mt = nv50_miptree(pt);
 112
 113                 pipe_buffer_reference(pscreen, &mt->buffer, NULL);
 114                 FREE(mt);
 115         }
 116 }
 117
 118 void
 119 nv50_miptree_sync(struct pipe_screen *pscreen, struct nv50_miptree *mt,
 120                   unsigned level, unsigned image)
 121 {
 122         struct nouveau_winsys *nvws = nv50_screen(pscreen)->nvws;
 123         struct nv50_miptree_level *lvl = &mt->level[level];
 124         struct pipe_surface *dst, *src;
 125         unsigned face = 0, zslice = 0;
 126
 127         if (!lvl->image_dirty_cpu & (1 << image))
 128                 return;
 129
 130         if (mt->base.target == PIPE_TEXTURE_CUBE)
 131                 face = image;
 132         else
 133         if (mt->base.target == PIPE_TEXTURE_3D)
 134                 zslice = image;
 135
 136         /* Mark as clean already - so we don't continually call this function
 137          * trying to get a GPU_WRITE pipe_surface!
 138          */
 139         lvl->image_dirty_cpu &= ~(1 << image);
 140
 141         dst = pscreen->get_tex_surface(pscreen, &mt->base, face, level, zslice,
 142                                        PIPE_BUFFER_USAGE_GPU_WRITE);
 143         /* Pretend we're doing CPU access so we get the backing pipe_surface
 144          * and not a view into the larger miptree.
 145          */
 146         src = pscreen->get_tex_surface(pscreen, &mt->base, face, level, zslice,
 147                                        PIPE_BUFFER_USAGE_CPU_READ);
 148
 149         nvws->surface_copy(nvws, dst, 0, 0, src, 0, 0, dst->width, dst->height);
 150
 151         pscreen->tex_surface_release(pscreen, &dst);
 152         pscreen->tex_surface_release(pscreen, &src);
 153 }
 154
 155 static struct pipe_surface *
 156 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 157                          unsigned face, unsigned level, unsigned zslice,
 158                          unsigned flags)
 159 {
 160         struct nv50_miptree *mt = nv50_miptree(pt);
 161         struct nv50_miptree_level *lvl = &mt->level[level];
 162         struct nv50_surface *s;
 163         struct pipe_surface *ps;
 164         int img;
 165
 166         if (pt->target == PIPE_TEXTURE_CUBE)
 167                 img = face;
 168         else
 169         if (pt->target == PIPE_TEXTURE_3D)
 170                 img = zslice;
 171         else
 172                 img = 0;
 173
 174         s = CALLOC_STRUCT(nv50_surface);
 175         if (!s)
 176                 return NULL;
 177         ps = &s->base;
 178
 179         ps->refcount = 1;
 180         ps->winsys = pscreen->winsys;
 181         ps->format = pt->format;
 182         ps->width = pt->width[level];
 183         ps->height = pt->height[level];
 184         ps->block = pt->block;
 185         ps->nblocksx = pt->nblocksx[level];
 186         ps->nblocksy = pt->nblocksy[level];
 187         ps->stride = ps->width * ps->block.size;
 188         ps->usage = flags;
 189         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 190
 191         if (flags & PIPE_BUFFER_USAGE_CPU_READ_WRITE) {
 192                 assert(!(flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE));
 193                 assert(!(lvl->image_dirty_cpu & (1 << img)));
 194
 195                 ps->offset = 0;
 196                 pipe_texture_reference(&ps->texture, pt);
 197                 pipe_buffer_reference(pscreen, &ps->buffer, lvl->image[img]);
 198
 199                 if (flags & PIPE_BUFFER_USAGE_CPU_WRITE)
 200                         lvl->image_dirty_cpu |= (1 << img);
 201         } else {
 202                 nv50_miptree_sync(pscreen, mt, level, img);
 203
 204                 ps->offset = lvl->image_offset[img];
 205                 pipe_texture_reference(&ps->texture, pt);
 206                 pipe_buffer_reference(pscreen, &ps->buffer, mt->buffer);
 207
 208                 if (flags & PIPE_BUFFER_USAGE_GPU_WRITE)
 209                         lvl->image_dirty_gpu |= (1 << img);
 210         }
 211
 212         return ps;
 213 }
 214
 215 static void
 216 nv50_miptree_surface_del(struct pipe_screen *pscreen,
 217                          struct pipe_surface **psurface)
 218 {
 219         struct pipe_surface *ps = *psurface;
 220         struct nv50_surface *s = nv50_surface(ps);
 221
 222         *psurface = NULL;
 223
 224         if (--ps->refcount <= 0) {
 225                 pipe_texture_reference(&ps->texture, NULL);
 226                 pipe_buffer_reference(pscreen, &ps->buffer, NULL);
 227                 FREE(s);
 228         }
 229 }
 230
 231 void
 232 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 233 {
 234         pscreen->texture_create = nv50_miptree_create;
 235         pscreen->texture_release = nv50_miptree_release;
 236         pscreen->get_tex_surface = nv50_miptree_surface_new;
 237         pscreen->tex_surface_release = nv50_miptree_surface_del;
 238 }
 239