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_defines.h"
  34 #include "pipe/p_inlines.h"
  35 #include "util/u_math.h"
  36 #include "util/u_memory.h"
  37
  38 #include "sp_context.h"
  39 #include "sp_state.h"
  40 #include "sp_texture.h"
  41 #include "sp_screen.h"
  42 #include "sp_winsys.h"
  43
  44
  45 /**
  46  * Conventional allocation path for non-display textures:
  47  * Use a simple, maximally packed layout.
  48  */
  49 static boolean
  50 softpipe_texture_layout(struct pipe_screen *screen,
  51                         struct softpipe_texture * spt)
  52 {
  53    struct pipe_texture *pt = &spt->base;
  54    unsigned level;
  55    unsigned width = pt->width0;
  56    unsigned height = pt->height0;
  57    unsigned depth = pt->depth0;
  58
  59    unsigned buffer_size = 0;
  60
  61    pt->width0 = width;
  62    pt->height0 = height;
  63    pt->depth0 = depth;
  64
  65    for (level = 0; level <= pt->last_level; level++) {
  66       pt->nblocksx[level] = pf_get_nblocksx(&pt->block, width);
  67       pt->nblocksy[level] = pf_get_nblocksy(&pt->block, height);
  68       spt->stride[level] = pt->nblocksx[level]*pt->block.size;
  69
  70       spt->level_offset[level] = buffer_size;
  71
  72       buffer_size += (pt->nblocksy[level] *
  73                       ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
  74                       spt->stride[level]);
  75
  76       width  = u_minify(width, 1);
  77       height = u_minify(height, 1);
  78       depth = u_minify(depth, 1);
  79    }
  80
  81    spt->buffer = screen->buffer_create(screen, 32,
  82                                        PIPE_BUFFER_USAGE_PIXEL,
  83                                        buffer_size);
  84
  85    return spt->buffer != NULL;
  86 }
  87
  88
  89 /**
  90  * Texture layout for simple color buffers.
  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.width0);
 101    spt->base.nblocksy[0] = pf_get_nblocksy(&spt->base.block, spt->base.height0);
 102
 103    spt->buffer = screen->surface_buffer_create( screen,
 104                                                 spt->base.width0,
 105                                                 spt->base.height0,
 106                                                 spt->base.format,
 107                                                 usage,
 108                                                 tex_usage,
 109                                                 &spt->stride[0]);
 110
 111    return spt->buffer != NULL;
 112 }
 113
 114
 115 /**
 116  * Create new pipe_texture given the template information.
 117  */
 118 static struct pipe_texture *
 119 softpipe_texture_create(struct pipe_screen *screen,
 120                         const struct pipe_texture *template)
 121 {
 122    struct softpipe_texture *spt = CALLOC_STRUCT(softpipe_texture);
 123    if (!spt)
 124       return NULL;
 125
 126    spt->base = *template;
 127    pipe_reference_init(&spt->base.reference, 1);
 128    spt->base.screen = screen;
 129
 130    spt->pot = (util_is_power_of_two(template->width0) &&
 131                util_is_power_of_two(template->height0) &&
 132                util_is_power_of_two(template->depth0));
 133
 134    if (spt->base.tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 135                               PIPE_TEXTURE_USAGE_PRIMARY)) {
 136       if (!softpipe_displaytarget_layout(screen, spt))
 137          goto fail;
 138    }
 139    else {
 140       if (!softpipe_texture_layout(screen, spt))
 141          goto fail;
 142    }
 143
 144    return &spt->base;
 145
 146  fail:
 147    FREE(spt);
 148    return NULL;
 149 }
 150
 151
 152 /**
 153  * Create a new pipe_texture which wraps an existing buffer.
 154  */
 155 static struct pipe_texture *
 156 softpipe_texture_blanket(struct pipe_screen * screen,
 157                          const struct pipe_texture *base,
 158                          const unsigned *stride,
 159                          struct pipe_buffer *buffer)
 160 {
 161    struct softpipe_texture *spt;
 162    assert(screen);
 163
 164    /* Only supports one type */
 165    if (base->target != PIPE_TEXTURE_2D ||
 166        base->last_level != 0 ||
 167        base->depth0 != 1) {
 168       return NULL;
 169    }
 170
 171    spt = CALLOC_STRUCT(softpipe_texture);
 172    if (!spt)
 173       return NULL;
 174
 175    spt->base = *base;
 176    pipe_reference_init(&spt->base.reference, 1);
 177    spt->base.screen = screen;
 178    spt->base.nblocksx[0] = pf_get_nblocksx(&spt->base.block, spt->base.width0);
 179    spt->base.nblocksy[0] = pf_get_nblocksy(&spt->base.block, spt->base.height0);
 180    spt->stride[0] = stride[0];
 181
 182    pipe_buffer_reference(&spt->buffer, buffer);
 183
 184    return &spt->base;
 185 }
 186
 187
 188 static void
 189 softpipe_texture_destroy(struct pipe_texture *pt)
 190 {
 191    struct softpipe_texture *spt = softpipe_texture(pt);
 192
 193    pipe_buffer_reference(&spt->buffer, NULL);
 194    FREE(spt);
 195 }
 196
 197
 198 /**
 199  * Get a pipe_surface "view" into a texture.
 200  */
 201 static struct pipe_surface *
 202 softpipe_get_tex_surface(struct pipe_screen *screen,
 203                          struct pipe_texture *pt,
 204                          unsigned face, unsigned level, unsigned zslice,
 205                          unsigned usage)
 206 {
 207    struct softpipe_texture *spt = softpipe_texture(pt);
 208    struct pipe_surface *ps;
 209
 210    assert(level <= pt->last_level);
 211
 212    ps = CALLOC_STRUCT(pipe_surface);
 213    if (ps) {
 214       pipe_reference_init(&ps->reference, 1);
 215       pipe_texture_reference(&ps->texture, pt);
 216       ps->format = pt->format;
 217       ps->width = u_minify(pt->width0, level);
 218       ps->height = u_minify(pt->height0, level);
 219       ps->offset = spt->level_offset[level];
 220       ps->usage = usage;
 221
 222       /* Because we are softpipe, anything that the state tracker
 223        * thought was going to be done with the GPU will actually get
 224        * done with the CPU.  Let's adjust the flags to take that into
 225        * account.
 226        */
 227       if (ps->usage & PIPE_BUFFER_USAGE_GPU_WRITE) {
 228          /* GPU_WRITE means "render" and that can involve reads (blending) */
 229          ps->usage |= PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_CPU_READ;
 230       }
 231
 232       if (ps->usage & PIPE_BUFFER_USAGE_GPU_READ)
 233          ps->usage |= PIPE_BUFFER_USAGE_CPU_READ;
 234
 235       if (ps->usage & (PIPE_BUFFER_USAGE_CPU_WRITE |
 236                        PIPE_BUFFER_USAGE_GPU_WRITE)) {
 237          /* Mark the surface as dirty.  The tile cache will look for this. */
 238          spt->timestamp++;
 239          softpipe_screen(screen)->timestamp++;
 240       }
 241
 242       ps->face = face;
 243       ps->level = level;
 244       ps->zslice = zslice;
 245
 246       if (pt->target == PIPE_TEXTURE_CUBE) {
 247          ps->offset += face * pt->nblocksy[level] * spt->stride[level];
 248       }
 249       else if (pt->target == PIPE_TEXTURE_3D) {
 250          ps->offset += zslice * pt->nblocksy[level] * spt->stride[level];
 251       }
 252       else {
 253          assert(face == 0);
 254          assert(zslice == 0);
 255       }
 256    }
 257    return ps;
 258 }
 259
 260
 261 /**
 262  * Free a pipe_surface which was created with softpipe_get_tex_surface().
 263  */
 264 static void
 265 softpipe_tex_surface_destroy(struct pipe_surface *surf)
 266 {
 267    /* Effectively do the texture_update work here - if texture images
 268     * needed post-processing to put them into hardware layout, this is
 269     * where it would happen.  For softpipe, nothing to do.
 270     */
 271    assert(surf->texture);
 272    pipe_texture_reference(&surf->texture, NULL);
 273    FREE(surf);
 274 }
 275
 276
 277 /**
 278  * Geta pipe_transfer object which is used for moving data in/out of
 279  * a texture object.
 280  * \param face  one of PIPE_TEX_FACE_x or 0
 281  * \param level  texture mipmap level
 282  * \param zslice  2D slice of a 3D texture
 283  * \param usage  one of PIPE_TRANSFER_READ/WRITE/READ_WRITE
 284  * \param x  X position of region to read/write
 285  * \param y  Y position of region to read/write
 286  * \param width  width of region to read/write
 287  * \param height  height of region to read/write
 288  */
 289 static struct pipe_transfer *
 290 softpipe_get_tex_transfer(struct pipe_screen *screen,
 291                           struct pipe_texture *texture,
 292                           unsigned face, unsigned level, unsigned zslice,
 293                           enum pipe_transfer_usage usage,
 294                           unsigned x, unsigned y, unsigned w, unsigned h)
 295 {
 296    struct softpipe_texture *sptex = softpipe_texture(texture);
 297    struct softpipe_transfer *spt;
 298
 299    assert(texture);
 300    assert(level <= texture->last_level);
 301
 302    spt = CALLOC_STRUCT(softpipe_transfer);
 303    if (spt) {
 304       struct pipe_transfer *pt = &spt->base;
 305       pipe_texture_reference(&pt->texture, texture);
 306       pt->format = texture->format;
 307       pt->block = texture->block;
 308       pt->x = x;
 309       pt->y = y;
 310       pt->width = w;
 311       pt->height = h;
 312       pt->nblocksx = texture->nblocksx[level];
 313       pt->nblocksy = texture->nblocksy[level];
 314       pt->stride = sptex->stride[level];
 315       pt->usage = usage;
 316       pt->face = face;
 317       pt->level = level;
 318       pt->zslice = zslice;
 319
 320       spt->offset = sptex->level_offset[level];
 321
 322       if (texture->target == PIPE_TEXTURE_CUBE) {
 323          spt->offset += face * pt->nblocksy * pt->stride;
 324       }
 325       else if (texture->target == PIPE_TEXTURE_3D) {
 326          spt->offset += zslice * pt->nblocksy * pt->stride;
 327       }
 328       else {
 329          assert(face == 0);
 330          assert(zslice == 0);
 331       }
 332       return pt;
 333    }
 334    return NULL;
 335 }
 336
 337
 338 /**
 339  * Free a pipe_transfer object which was created with
 340  * softpipe_get_tex_transfer().
 341  */
 342 static void
 343 softpipe_tex_transfer_destroy(struct pipe_transfer *transfer)
 344 {
 345    /* Effectively do the texture_update work here - if texture images
 346     * needed post-processing to put them into hardware layout, this is
 347     * where it would happen.  For softpipe, nothing to do.
 348     */
 349    assert (transfer->texture);
 350    pipe_texture_reference(&transfer->texture, NULL);
 351    FREE(transfer);
 352 }
 353
 354
 355 /**
 356  * Create memory mapping for given pipe_transfer object.
 357  */
 358 static void *
 359 softpipe_transfer_map( struct pipe_screen *screen,
 360                        struct pipe_transfer *transfer )
 361 {
 362    ubyte *map, *xfer_map;
 363    struct softpipe_texture *spt;
 364
 365    assert(transfer->texture);
 366    spt = softpipe_texture(transfer->texture);
 367
 368    map = pipe_buffer_map(screen, spt->buffer, pipe_transfer_buffer_flags(transfer));
 369    if (map == NULL)
 370       return NULL;
 371
 372    /* May want to different things here depending on read/write nature
 373     * of the map:
 374     */
 375    if (transfer->texture && (transfer->usage & PIPE_TRANSFER_WRITE)) {
 376       /* Do something to notify sharing contexts of a texture change.
 377        * In softpipe, that would mean flushing the texture cache.
 378        */
 379       softpipe_screen(screen)->timestamp++;
 380    }
 381
 382    xfer_map = map + softpipe_transfer(transfer)->offset +
 383       transfer->y / transfer->block.height * transfer->stride +
 384       transfer->x / transfer->block.width * transfer->block.size;
 385    /*printf("map = %p  xfer map = %p\n", map, xfer_map);*/
 386    return xfer_map;
 387 }
 388
 389
 390 /**
 391  * Unmap memory mapping for given pipe_transfer object.
 392  */
 393 static void
 394 softpipe_transfer_unmap(struct pipe_screen *screen,
 395                         struct pipe_transfer *transfer)
 396 {
 397    struct softpipe_texture *spt;
 398
 399    assert(transfer->texture);
 400    spt = softpipe_texture(transfer->texture);
 401
 402    pipe_buffer_unmap( screen, spt->buffer );
 403
 404    if (transfer->usage & PIPE_TRANSFER_WRITE) {
 405       /* Mark the texture as dirty to expire the tile caches. */
 406       spt->timestamp++;
 407    }
 408 }
 409
 410
 411 static struct pipe_video_surface*
 412 softpipe_video_surface_create(struct pipe_screen *screen,
 413                               enum pipe_video_chroma_format chroma_format,
 414                               unsigned width, unsigned height)
 415 {
 416    struct softpipe_video_surface *sp_vsfc;
 417    struct pipe_texture template;
 418
 419    assert(screen);
 420    assert(width && height);
 421
 422    sp_vsfc = CALLOC_STRUCT(softpipe_video_surface);
 423    if (!sp_vsfc)
 424       return NULL;
 425
 426    pipe_reference_init(&sp_vsfc->base.reference, 1);
 427    sp_vsfc->base.screen = screen;
 428    sp_vsfc->base.chroma_format = chroma_format;
 429    /*sp_vsfc->base.surface_format = PIPE_VIDEO_SURFACE_FORMAT_VUYA;*/
 430    sp_vsfc->base.width = width;
 431    sp_vsfc->base.height = height;
 432
 433    memset(&template, 0, sizeof(struct pipe_texture));
 434    template.target = PIPE_TEXTURE_2D;
 435    template.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 436    template.last_level = 0;
 437    /* vl_mpeg12_mc_renderer expects this when it's initialized with pot_buffers=true */
 438    template.width0 = util_next_power_of_two(width);
 439    template.height0 = util_next_power_of_two(height);
 440    template.depth0 = 1;
 441    pf_get_block(template.format, &template.block);
 442    template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER | PIPE_TEXTURE_USAGE_RENDER_TARGET;
 443
 444    sp_vsfc->tex = screen->texture_create(screen, &template);
 445    if (!sp_vsfc->tex) {
 446       FREE(sp_vsfc);
 447       return NULL;
 448    }
 449
 450    return &sp_vsfc->base;
 451 }
 452
 453
 454 static void
 455 softpipe_video_surface_destroy(struct pipe_video_surface *vsfc)
 456 {
 457    struct softpipe_video_surface *sp_vsfc = softpipe_video_surface(vsfc);
 458
 459    pipe_texture_reference(&sp_vsfc->tex, NULL);
 460    FREE(sp_vsfc);
 461 }
 462
 463
 464 void
 465 softpipe_init_screen_texture_funcs(struct pipe_screen *screen)
 466 {
 467    screen->texture_create = softpipe_texture_create;
 468    screen->texture_blanket = softpipe_texture_blanket;
 469    screen->texture_destroy = softpipe_texture_destroy;
 470
 471    screen->get_tex_surface = softpipe_get_tex_surface;
 472    screen->tex_surface_destroy = softpipe_tex_surface_destroy;
 473
 474    screen->get_tex_transfer = softpipe_get_tex_transfer;
 475    screen->tex_transfer_destroy = softpipe_tex_transfer_destroy;
 476    screen->transfer_map = softpipe_transfer_map;
 477    screen->transfer_unmap = softpipe_transfer_unmap;
 478
 479    screen->video_surface_create = softpipe_video_surface_create;
 480    screen->video_surface_destroy = softpipe_video_surface_destroy;
 481 }
 482
 483
 484 /**
 485  * Return pipe_buffer handle and stride for given texture object.
 486  * XXX used for???
 487  */
 488 boolean
 489 softpipe_get_texture_buffer( struct pipe_texture *texture,
 490                              struct pipe_buffer **buf,
 491                              unsigned *stride )
 492 {
 493    struct softpipe_texture *tex = (struct softpipe_texture *) texture;
 494
 495    if (!tex)
 496       return FALSE;
 497
 498    pipe_buffer_reference(buf, tex->buffer);
 499
 500    if (stride)
 501       *stride = tex->stride[0];
 502
 503    return TRUE;
 504 }