src/gallium/drivers/softpipe/sp_texture.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   *   Michel Dänzer <michel@tungstengraphics.com>
  31   */
  32
  33 #include "pipe/p_context.h"
  34 #include "pipe/p_defines.h"
  35 #include "pipe/p_inlines.h"
  36 #include "pipe/internal/p_winsys_screen.h"
  37 #include "util/u_math.h"
  38 #include "util/u_memory.h"
  39
  40 #include "sp_context.h"
  41 #include "sp_state.h"
  42 #include "sp_texture.h"
  43 #include "sp_tile_cache.h"
  44 #include "sp_screen.h"
  45 #include "sp_winsys.h"
  46
  47
  48 /* Simple, maximally packed layout.
  49  */
  50
  51
  52 /* Conventional allocation path for non-display textures:
  53  */
  54 static boolean
  55 softpipe_texture_layout(struct pipe_screen *screen,
  56                         struct softpipe_texture * spt)
  57 {
  58    struct pipe_texture *pt = &spt->base;
  59    unsigned level;
  60    unsigned width = pt->width[0];
  61    unsigned height = pt->height[0];
  62    unsigned depth = pt->depth[0];
  63
  64    unsigned buffer_size = 0;
  65
  66    for (level = 0; level <= pt->last_level; level++) {
  67       pt->width[level] = width;
  68       pt->height[level] = height;
  69       pt->depth[level] = depth;
  70       pt->nblocksx[level] = pf_get_nblocksx(&pt->block, width);
  71       pt->nblocksy[level] = pf_get_nblocksy(&pt->block, height);
  72       spt->stride[level] = pt->nblocksx[level]*pt->block.size;
  73
  74       spt->level_offset[level] = buffer_size;
  75
  76       buffer_size += (pt->nblocksy[level] *
  77                       ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
  78                       spt->stride[level]);
  79
  80       width  = minify(width);
  81       height = minify(height);
  82       depth = minify(depth);
  83    }
  84
  85    spt->buffer = screen->buffer_create(screen, 32,
  86                                        PIPE_BUFFER_USAGE_PIXEL,
  87                                        buffer_size);
  88
  89    return spt->buffer != NULL;
  90 }
  91
  92 static boolean
  93 softpipe_displaytarget_layout(struct pipe_screen *screen,
  94                               struct softpipe_texture * spt)
  95 {
  96    unsigned usage = (PIPE_BUFFER_USAGE_CPU_READ_WRITE |
  97                      PIPE_BUFFER_USAGE_GPU_READ_WRITE);
  98    unsigned tex_usage = spt->base.tex_usage;
  99
 100    spt->base.nblocksx[0] = pf_get_nblocksx(&spt->base.block, spt->base.width[0]);
 101    spt->base.nblocksy[0] = pf_get_nblocksy(&spt->base.block, spt->base.height[0]);
 102
 103    spt->buffer = screen->surface_buffer_create( screen,
 104                                                 spt->base.width[0],
 105                                                 spt->base.height[0],
 106                                                 spt->base.format,
 107                                                 usage,
 108                                                 tex_usage,
 109                                                 &spt->stride[0]);
 110
 111    return spt->buffer != NULL;
 112 }
 113
 114
 115
 116
 117
 118 static struct pipe_texture *
 119 softpipe_texture_create(struct pipe_screen *screen,
 120                         const struct pipe_texture *templat)
 121 {
 122    struct softpipe_texture *spt = CALLOC_STRUCT(softpipe_texture);
 123    if (!spt)
 124       return NULL;
 125
 126    spt->base = *templat;
 127    pipe_reference_init(&spt->base.reference, 1);
 128    spt->base.screen = screen;
 129
 130    if (spt->base.tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 131                               PIPE_TEXTURE_USAGE_PRIMARY)) {
 132       if (!softpipe_displaytarget_layout(screen, spt))
 133          goto fail;
 134    }
 135    else {
 136       if (!softpipe_texture_layout(screen, spt))
 137          goto fail;
 138    }
 139
 140    return &spt->base;
 141
 142  fail:
 143    FREE(spt);
 144    return NULL;
 145 }
 146
 147
 148 static struct pipe_texture *
 149 softpipe_texture_blanket(struct pipe_screen * screen,
 150                          const struct pipe_texture *base,
 151                          const unsigned *stride,
 152                          struct pipe_buffer *buffer)
 153 {
 154    struct softpipe_texture *spt;
 155    assert(screen);
 156
 157    /* Only supports one type */
 158    if (base->target != PIPE_TEXTURE_2D ||
 159        base->last_level != 0 ||
 160        base->depth[0] != 1) {
 161       return NULL;
 162    }
 163
 164    spt = CALLOC_STRUCT(softpipe_texture);
 165    if (!spt)
 166       return NULL;
 167
 168    spt->base = *base;
 169    pipe_reference_init(&spt->base.reference, 1);
 170    spt->base.screen = screen;
 171    spt->base.nblocksx[0] = pf_get_nblocksx(&spt->base.block, spt->base.width[0]);
 172    spt->base.nblocksy[0] = pf_get_nblocksy(&spt->base.block, spt->base.height[0]);
 173    spt->stride[0] = stride[0];
 174
 175    pipe_buffer_reference(&spt->buffer, buffer);
 176
 177    return &spt->base;
 178 }
 179
 180
 181 static void
 182 softpipe_texture_destroy(struct pipe_texture *pt)
 183 {
 184    struct softpipe_texture *spt = softpipe_texture(pt);
 185
 186    pipe_buffer_reference(&spt->buffer, NULL);
 187    FREE(spt);
 188 }
 189
 190
 191 static struct pipe_surface *
 192 softpipe_get_tex_surface(struct pipe_screen *screen,
 193                          struct pipe_texture *pt,
 194                          unsigned face, unsigned level, unsigned zslice,
 195                          unsigned usage)
 196 {
 197    struct softpipe_texture *spt = softpipe_texture(pt);
 198    struct pipe_surface *ps;
 199
 200    assert(level <= pt->last_level);
 201
 202    ps = CALLOC_STRUCT(pipe_surface);
 203    if (ps) {
 204       pipe_reference_init(&ps->reference, 1);
 205       pipe_texture_reference(&ps->texture, pt);
 206       ps->format = pt->format;
 207       ps->width = pt->width[level];
 208       ps->height = pt->height[level];
 209       ps->offset = spt->level_offset[level];
 210       ps->usage = usage;
 211
 212       /* Because we are softpipe, anything that the state tracker
 213        * thought was going to be done with the GPU will actually get
 214        * done with the CPU.  Let's adjust the flags to take that into
 215        * account.
 216        */
 217       if (ps->usage & PIPE_BUFFER_USAGE_GPU_WRITE) {
 218          /* GPU_WRITE means "render" and that can involve reads (blending) */
 219          ps->usage |= PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_CPU_READ;
 220       }
 221
 222       if (ps->usage & PIPE_BUFFER_USAGE_GPU_READ)
 223          ps->usage |= PIPE_BUFFER_USAGE_CPU_READ;
 224
 225       ps->face = face;
 226       ps->level = level;
 227       ps->zslice = zslice;
 228
 229       if (pt->target == PIPE_TEXTURE_CUBE) {
 230          ps->offset += face * pt->nblocksy[level] * spt->stride[level];
 231       }
 232       else if (pt->target == PIPE_TEXTURE_3D) {
 233          ps->offset += zslice * pt->nblocksy[level] * spt->stride[level];
 234       }
 235       else {
 236          assert(face == 0);
 237          assert(zslice == 0);
 238       }
 239    }
 240    return ps;
 241 }
 242
 243
 244 static void
 245 softpipe_tex_surface_destroy(struct pipe_surface *surf)
 246 {
 247    /* Effectively do the texture_update work here - if texture images
 248     * needed post-processing to put them into hardware layout, this is
 249     * where it would happen.  For softpipe, nothing to do.
 250     */
 251    assert(surf->texture);
 252    pipe_texture_reference(&surf->texture, NULL);
 253    FREE(surf);
 254 }
 255
 256
 257 static struct pipe_transfer *
 258 softpipe_get_tex_transfer(struct pipe_screen *screen,
 259                           struct pipe_texture *texture,
 260                           unsigned face, unsigned level, unsigned zslice,
 261                           enum pipe_transfer_usage usage,
 262                           unsigned x, unsigned y, unsigned w, unsigned h)
 263 {
 264    struct softpipe_texture *sptex = softpipe_texture(texture);
 265    struct softpipe_transfer *spt;
 266
 267    assert(texture);
 268    assert(level <= texture->last_level);
 269
 270    spt = CALLOC_STRUCT(softpipe_transfer);
 271    if (spt) {
 272       struct pipe_transfer *pt = &spt->base;
 273       pipe_texture_reference(&pt->texture, texture);
 274       pt->format = texture->format;
 275       pt->block = texture->block;
 276       pt->x = x;
 277       pt->y = y;
 278       pt->width = w;
 279       pt->height = h;
 280       pt->nblocksx = texture->nblocksx[level];
 281       pt->nblocksy = texture->nblocksy[level];
 282       pt->stride = sptex->stride[level];
 283       pt->usage = usage;
 284       pt->face = face;
 285       pt->level = level;
 286       pt->zslice = zslice;
 287
 288       spt->offset = sptex->level_offset[level];
 289
 290       if (texture->target == PIPE_TEXTURE_CUBE) {
 291          spt->offset += face * pt->nblocksy * pt->stride;
 292       }
 293       else if (texture->target == PIPE_TEXTURE_3D) {
 294          spt->offset += zslice * pt->nblocksy * pt->stride;
 295       }
 296       else {
 297          assert(face == 0);
 298          assert(zslice == 0);
 299       }
 300       return pt;
 301    }
 302    return NULL;
 303 }
 304
 305
 306 static void
 307 softpipe_tex_transfer_destroy(struct pipe_transfer *transfer)
 308 {
 309    /* Effectively do the texture_update work here - if texture images
 310     * needed post-processing to put them into hardware layout, this is
 311     * where it would happen.  For softpipe, nothing to do.
 312     */
 313    assert (transfer->texture);
 314    pipe_texture_reference(&transfer->texture, NULL);
 315    FREE(transfer);
 316 }
 317
 318
 319 static void *
 320 softpipe_transfer_map( struct pipe_screen *screen,
 321                        struct pipe_transfer *transfer )
 322 {
 323    ubyte *map, *xfer_map;
 324    struct softpipe_texture *spt;
 325    unsigned flags = 0;
 326
 327    assert(transfer->texture);
 328    spt = softpipe_texture(transfer->texture);
 329
 330    if (transfer->usage != PIPE_TRANSFER_READ) {
 331       flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
 332    }
 333
 334    if (transfer->usage != PIPE_TRANSFER_WRITE) {
 335       flags |= PIPE_BUFFER_USAGE_CPU_READ;
 336    }
 337
 338    map = pipe_buffer_map(screen, spt->buffer, flags);
 339    if (map == NULL)
 340       return NULL;
 341
 342    /* May want to different things here depending on read/write nature
 343     * of the map:
 344     */
 345    if (transfer->texture && transfer->usage != PIPE_TRANSFER_READ)
 346    {
 347       /* Do something to notify sharing contexts of a texture change.
 348        * In softpipe, that would mean flushing the texture cache.
 349        */
 350       softpipe_screen(screen)->timestamp++;
 351    }
 352
 353    xfer_map = map + softpipe_transfer(transfer)->offset +
 354       transfer->y / transfer->block.height * transfer->stride +
 355       transfer->x / transfer->block.width * transfer->block.size;
 356    /*printf("map = %p  xfer map = %p\n", map, xfer_map);*/
 357    return xfer_map;
 358 }
 359
 360
 361 static void
 362 softpipe_transfer_unmap(struct pipe_screen *screen,
 363                        struct pipe_transfer *transfer)
 364 {
 365    struct softpipe_texture *spt;
 366
 367    assert(transfer->texture);
 368    spt = softpipe_texture(transfer->texture);
 369
 370    pipe_buffer_unmap( screen, spt->buffer );
 371
 372    if (transfer->usage != PIPE_TRANSFER_READ) {
 373       /* Mark the texture as dirty to expire the tile caches. */
 374       spt->modified = TRUE;
 375    }
 376 }
 377
 378
 379 void
 380 softpipe_init_texture_funcs(struct softpipe_context *sp)
 381 {
 382 }
 383
 384
 385 void
 386 softpipe_init_screen_texture_funcs(struct pipe_screen *screen)
 387 {
 388    screen->texture_create = softpipe_texture_create;
 389    screen->texture_blanket = softpipe_texture_blanket;
 390    screen->texture_destroy = softpipe_texture_destroy;
 391
 392    screen->get_tex_surface = softpipe_get_tex_surface;
 393    screen->tex_surface_destroy = softpipe_tex_surface_destroy;
 394
 395    screen->get_tex_transfer = softpipe_get_tex_transfer;
 396    screen->tex_transfer_destroy = softpipe_tex_transfer_destroy;
 397    screen->transfer_map = softpipe_transfer_map;
 398    screen->transfer_unmap = softpipe_transfer_unmap;
 399 }
 400
 401
 402 boolean
 403 softpipe_get_texture_buffer( struct pipe_texture *texture,
 404                              struct pipe_buffer **buf,
 405                              unsigned *stride )
 406 {
 407    struct softpipe_texture *tex = (struct softpipe_texture *)texture;
 408
 409    if (!tex)
 410       return FALSE;
 411
 412    pipe_buffer_reference(buf, tex->buffer);
 413
 414    if (stride)
 415       *stride = tex->stride[0];
 416
 417    return TRUE;
 418 }