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, height);
  73
  74                 lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
  75                 lvl->image = CALLOC(mt->image_nr, sizeof(struct pipe_buffer *));
  76
  77                 width = MAX2(1, width >> 1);
  78                 height = MAX2(1, height >> 1);
  79                 depth = MAX2(1, depth >> 1);
  80         }
  81
  82         for (i = 0; i < mt->image_nr; i++) {
  83                 for (l = 0; l <= pt->last_level; l++) {
  84                         struct nv50_miptree_level *lvl = &mt->level[l];
  85                         int size;
  86
  87                         size  = align(pt->width[l], 8) * pt->block.size;
  88                         size  = align(size, 64);
  89                         size *= align(pt->height[l], 8) * pt->block.size;
  90
  91                         lvl->image[i] = ws->buffer_create(ws, 256, 0, size);
  92                         lvl->image_offset[i] = mt->total_size;
  93
  94                         mt->total_size += size;
  95                 }
  96         }
  97
  98         mt->buffer = ws->buffer_create(ws, 256, usage, mt->total_size);
  99         if (!mt->buffer) {
 100                 FREE(mt);
 101                 return NULL;
 102         }
 103
 104         return &mt->base;
 105 }
 106
 107 static struct pipe_texture *
 108 nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
 109                      const unsigned *stride, struct pipe_buffer *pb)
 110 {
 111         struct nv50_miptree *mt;
 112
 113         /* Only supports 2D, non-mipmapped textures for the moment */
 114         if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
 115             pt->depth[0] != 1)
 116                 return NULL;
 117
 118         mt = CALLOC_STRUCT(nv50_miptree);
 119         if (!mt)
 120                 return NULL;
 121
 122         mt->base = *pt;
 123         mt->base.refcount = 1;
 124         mt->base.screen = pscreen;
 125         mt->image_nr = 1;
 126         mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
 127
 128         pipe_buffer_reference(pscreen, &mt->buffer, pb);
 129         return &mt->base;
 130 }
 131
 132 static INLINE void
 133 mark_dirty(uint32_t *flags, unsigned image)
 134 {
 135         flags[image / 32] |= (1 << (image % 32));
 136 }
 137
 138 static INLINE void
 139 mark_clean(uint32_t *flags, unsigned image)
 140 {
 141         flags[image / 32] &= ~(1 << (image % 32));
 142 }
 143
 144 static INLINE int
 145 is_dirty(uint32_t *flags, unsigned image)
 146 {
 147         return !!(flags[image / 32] & (1 << (image % 32)));
 148 }
 149
 150 static void
 151 nv50_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
 152 {
 153         struct pipe_texture *pt = *ppt;
 154
 155         *ppt = NULL;
 156
 157         if (--pt->refcount <= 0) {
 158                 struct nv50_miptree *mt = nv50_miptree(pt);
 159
 160                 pipe_buffer_reference(pscreen, &mt->buffer, NULL);
 161                 FREE(mt);
 162         }
 163 }
 164
 165 void
 166 nv50_miptree_sync(struct pipe_screen *pscreen, struct nv50_miptree *mt,
 167                   unsigned level, unsigned image)
 168 {
 169         struct nv50_screen *nvscreen = nv50_screen(pscreen);
 170         struct nv50_miptree_level *lvl = &mt->level[level];
 171         struct pipe_surface *dst, *src;
 172         unsigned face = 0, zslice = 0;
 173
 174         if (!is_dirty(lvl->image_dirty_cpu, image))
 175                 return;
 176
 177         if (mt->base.target == PIPE_TEXTURE_CUBE)
 178                 face = image;
 179         else
 180         if (mt->base.target == PIPE_TEXTURE_3D)
 181                 zslice = image;
 182
 183         /* Mark as clean already - so we don't continually call this function
 184          * trying to get a GPU_WRITE pipe_surface!
 185          */
 186         mark_clean(lvl->image_dirty_cpu, image);
 187
 188         /* Pretend we're doing CPU access so we get the backing pipe_surface
 189          * and not a view into the larger miptree.
 190          */
 191         src = pscreen->get_tex_surface(pscreen, &mt->base, face, level, zslice,
 192                                        PIPE_BUFFER_USAGE_CPU_READ);
 193
 194         /* Pretend we're only reading with the GPU so surface doesn't get marked
 195          * as dirtied by the GPU.
 196          */
 197         dst = pscreen->get_tex_surface(pscreen, &mt->base, face, level, zslice,
 198                                        PIPE_BUFFER_USAGE_GPU_READ);
 199
 200         nv50_surface_do_copy(nvscreen, dst, 0, 0, src, 0, 0, dst->width, dst->height);
 201
 202         pscreen->tex_surface_release(pscreen, &dst);
 203         pscreen->tex_surface_release(pscreen, &src);
 204 }
 205
 206 /* The reverse of the above */
 207 static void
 208 nv50_miptree_sync_cpu(struct pipe_screen *pscreen, struct nv50_miptree *mt,
 209                       unsigned level, unsigned image)
 210 {
 211         struct nv50_screen *nvscreen = nv50_screen(pscreen);
 212         struct nv50_miptree_level *lvl = &mt->level[level];
 213         struct pipe_surface *dst, *src;
 214         unsigned face = 0, zslice = 0;
 215
 216         if (!is_dirty(lvl->image_dirty_gpu, image))
 217                 return;
 218
 219         if (mt->base.target == PIPE_TEXTURE_CUBE)
 220                 face = image;
 221         else
 222         if (mt->base.target == PIPE_TEXTURE_3D)
 223                 zslice = image;
 224
 225         mark_clean(lvl->image_dirty_gpu, image);
 226
 227         src = pscreen->get_tex_surface(pscreen, &mt->base, face, level, zslice,
 228                                        PIPE_BUFFER_USAGE_GPU_READ);
 229         dst = pscreen->get_tex_surface(pscreen, &mt->base, face, level, zslice,
 230                                        PIPE_BUFFER_USAGE_CPU_READ);
 231
 232         nv50_surface_do_copy(nvscreen, dst, 0, 0, src, 0, 0, dst->width, dst->height);
 233
 234         pscreen->tex_surface_release(pscreen, &dst);
 235         pscreen->tex_surface_release(pscreen, &src);
 236 }
 237
 238 static struct pipe_surface *
 239 nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
 240                          unsigned face, unsigned level, unsigned zslice,
 241                          unsigned flags)
 242 {
 243         struct nv50_miptree *mt = nv50_miptree(pt);
 244         struct nv50_miptree_level *lvl = &mt->level[level];
 245         struct pipe_surface *ps;
 246         int img;
 247
 248         if (pt->target == PIPE_TEXTURE_CUBE)
 249                 img = face;
 250         else
 251         if (pt->target == PIPE_TEXTURE_3D)
 252                 img = zslice;
 253         else
 254                 img = 0;
 255
 256         ps = CALLOC_STRUCT(pipe_surface);
 257         if (!ps)
 258                 return NULL;
 259         pipe_texture_reference(&ps->texture, pt);
 260         ps->format = pt->format;
 261         ps->width = pt->width[level];
 262         ps->height = pt->height[level];
 263         ps->block = pt->block;
 264         ps->nblocksx = pt->nblocksx[level];
 265         ps->nblocksy = pt->nblocksy[level];
 266         ps->stride = ps->width * ps->block.size;
 267         ps->usage = flags;
 268         ps->status = PIPE_SURFACE_STATUS_DEFINED;
 269         ps->refcount = 1;
 270         ps->face = face;
 271         ps->level = level;
 272         ps->zslice = zslice;
 273
 274         if (flags & PIPE_BUFFER_USAGE_CPU_READ_WRITE) {
 275                 assert(!(flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE));
 276                 nv50_miptree_sync_cpu(pscreen, mt, level, img);
 277
 278                 ps->offset = 0;
 279                 pipe_texture_reference(&ps->texture, pt);
 280
 281                 if (flags & PIPE_BUFFER_USAGE_CPU_WRITE)
 282                         mark_dirty(lvl->image_dirty_cpu, img);
 283         } else {
 284                 nv50_miptree_sync(pscreen, mt, level, img);
 285
 286                 ps->offset = lvl->image_offset[img];
 287                 pipe_texture_reference(&ps->texture, pt);
 288
 289                 if (flags & PIPE_BUFFER_USAGE_GPU_WRITE)
 290                         mark_dirty(lvl->image_dirty_gpu, img);
 291         }
 292
 293         return ps;
 294 }
 295
 296 static void
 297 nv50_miptree_surface_del(struct pipe_screen *pscreen,
 298                          struct pipe_surface **psurface)
 299 {
 300         struct pipe_surface *ps = *psurface;
 301         struct nv50_surface *s = nv50_surface(ps);
 302
 303         *psurface = NULL;
 304
 305         if (--ps->refcount <= 0) {
 306                 pipe_texture_reference(&ps->texture, NULL);
 307                 FREE(s);
 308         }
 309 }
 310
 311 void
 312 nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
 313 {
 314         pscreen->texture_create = nv50_miptree_create;
 315         pscreen->texture_blanket = nv50_miptree_blanket;
 316         pscreen->texture_release = nv50_miptree_release;
 317         pscreen->get_tex_surface = nv50_miptree_surface_new;
 318         pscreen->tex_surface_release = nv50_miptree_surface_del;
 319 }
 320