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 "util/u_inlines.h"
  35
  36 #include "util/u_format.h"
  37 #include "util/u_math.h"
  38 #include "util/u_memory.h"
  39
  40 #include "sp_context.h"
  41 #include "sp_texture.h"
  42 #include "sp_screen.h"
  43
  44 #include "state_tracker/sw_winsys.h"
  45
  46
  47 /**
  48  * Conventional allocation path for non-display textures:
  49  * Use a simple, maximally packed layout.
  50  */
  51 static boolean
  52 softpipe_texture_layout(struct pipe_screen *screen,
  53                         struct softpipe_texture * spt)
  54 {
  55    struct pipe_texture *pt = &spt->base;
  56    unsigned level;
  57    unsigned width = pt->width0;
  58    unsigned height = pt->height0;
  59    unsigned depth = pt->depth0;
  60    unsigned buffer_size = 0;
  61
  62    for (level = 0; level <= pt->last_level; level++) {
  63       spt->stride[level] = util_format_get_stride(pt->format, width);
  64
  65       spt->level_offset[level] = buffer_size;
  66
  67       buffer_size += (util_format_get_nblocksy(pt->format, height) *
  68                       ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
  69                       spt->stride[level]);
  70
  71       width  = u_minify(width, 1);
  72       height = u_minify(height, 1);
  73       depth = u_minify(depth, 1);
  74    }
  75
  76    spt->data = align_malloc(buffer_size, 16);
  77
  78    return spt->data != NULL;
  79 }
  80
  81
  82 /**
  83  * Texture layout for simple color buffers.
  84  */
  85 static boolean
  86 softpipe_displaytarget_layout(struct pipe_screen *screen,
  87                               struct softpipe_texture * spt)
  88 {
  89    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
  90
  91    /* Round up the surface size to a multiple of the tile size?
  92     */
  93    spt->dt = winsys->displaytarget_create(winsys,
  94                                           spt->base.tex_usage,
  95                                           spt->base.format,
  96                                           spt->base.width0,
  97                                           spt->base.height0,
  98                                           16,
  99                                           &spt->stride[0] );
 100
 101    return spt->dt != NULL;
 102 }
 103
 104
 105 /**
 106  * Create new pipe_texture given the template information.
 107  */
 108 static struct pipe_texture *
 109 softpipe_texture_create(struct pipe_screen *screen,
 110                         const struct pipe_texture *template)
 111 {
 112    struct softpipe_texture *spt = CALLOC_STRUCT(softpipe_texture);
 113    if (!spt)
 114       return NULL;
 115
 116    spt->base = *template;
 117    pipe_reference_init(&spt->base.reference, 1);
 118    spt->base.screen = screen;
 119
 120    spt->pot = (util_is_power_of_two(template->width0) &&
 121                util_is_power_of_two(template->height0) &&
 122                util_is_power_of_two(template->depth0));
 123
 124    if (spt->base.tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 125                               PIPE_TEXTURE_USAGE_SCANOUT |
 126                               PIPE_TEXTURE_USAGE_SHARED)) {
 127       if (!softpipe_displaytarget_layout(screen, spt))
 128          goto fail;
 129    }
 130    else {
 131       if (!softpipe_texture_layout(screen, spt))
 132          goto fail;
 133    }
 134
 135    return &spt->base;
 136
 137  fail:
 138    FREE(spt);
 139    return NULL;
 140 }
 141
 142
 143 static void
 144 softpipe_texture_destroy(struct pipe_texture *pt)
 145 {
 146    struct softpipe_screen *screen = softpipe_screen(pt->screen);
 147    struct softpipe_texture *spt = softpipe_texture(pt);
 148
 149    if (spt->dt) {
 150       /* display target */
 151       struct sw_winsys *winsys = screen->winsys;
 152       winsys->displaytarget_destroy(winsys, spt->dt);
 153    }
 154    else {
 155       /* regular texture */
 156       align_free(spt->data);
 157    }
 158
 159    FREE(spt);
 160 }
 161
 162
 163 static struct pipe_texture *
 164 softpipe_texture_from_handle(struct pipe_screen *screen,
 165                              const struct pipe_texture *template,
 166                              struct winsys_handle *whandle)
 167 {
 168    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 169    struct softpipe_texture *spt = CALLOC_STRUCT(softpipe_texture);
 170    if (!spt)
 171       return NULL;
 172
 173    spt->base = *template;
 174    pipe_reference_init(&spt->base.reference, 1);
 175    spt->base.screen = screen;
 176
 177    spt->pot = (util_is_power_of_two(template->width0) &&
 178                util_is_power_of_two(template->height0) &&
 179                util_is_power_of_two(template->depth0));
 180
 181    spt->dt = winsys->displaytarget_from_handle(winsys,
 182                                                template,
 183                                                whandle,
 184                                                &spt->stride[0]);
 185    if (!spt->dt)
 186       goto fail;
 187
 188    return &spt->base;
 189
 190  fail:
 191    FREE(spt);
 192    return NULL;
 193 }
 194
 195
 196 static boolean
 197 softpipe_texture_get_handle(struct pipe_screen *screen,
 198                             struct pipe_texture *pt,
 199                             struct winsys_handle *whandle)
 200 {
 201    struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
 202    struct softpipe_texture *spt = softpipe_texture(pt);
 203
 204    assert(spt->dt);
 205    if (!spt->dt)
 206       return FALSE;
 207
 208    return winsys->displaytarget_get_handle(winsys, spt->dt, whandle);
 209 }
 210
 211
 212 /**
 213  * Get a pipe_surface "view" into a texture.
 214  */
 215 static struct pipe_surface *
 216 softpipe_get_tex_surface(struct pipe_screen *screen,
 217                          struct pipe_texture *pt,
 218                          unsigned face, unsigned level, unsigned zslice,
 219                          unsigned usage)
 220 {
 221    struct softpipe_texture *spt = softpipe_texture(pt);
 222    struct pipe_surface *ps;
 223
 224    assert(level <= pt->last_level);
 225
 226    ps = CALLOC_STRUCT(pipe_surface);
 227    if (ps) {
 228       pipe_reference_init(&ps->reference, 1);
 229       pipe_texture_reference(&ps->texture, pt);
 230       ps->format = pt->format;
 231       ps->width = u_minify(pt->width0, level);
 232       ps->height = u_minify(pt->height0, level);
 233       ps->offset = spt->level_offset[level];
 234       ps->usage = usage;
 235
 236       /* Because we are softpipe, anything that the state tracker
 237        * thought was going to be done with the GPU will actually get
 238        * done with the CPU.  Let's adjust the flags to take that into
 239        * account.
 240        */
 241       if (ps->usage & PIPE_BUFFER_USAGE_GPU_WRITE) {
 242          /* GPU_WRITE means "render" and that can involve reads (blending) */
 243          ps->usage |= PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_CPU_READ;
 244       }
 245
 246       if (ps->usage & PIPE_BUFFER_USAGE_GPU_READ)
 247          ps->usage |= PIPE_BUFFER_USAGE_CPU_READ;
 248
 249       if (ps->usage & (PIPE_BUFFER_USAGE_CPU_WRITE |
 250                        PIPE_BUFFER_USAGE_GPU_WRITE)) {
 251          /* Mark the surface as dirty.  The tile cache will look for this. */
 252          spt->timestamp++;
 253          softpipe_screen(screen)->timestamp++;
 254       }
 255
 256       ps->face = face;
 257       ps->level = level;
 258       ps->zslice = zslice;
 259
 260       if (pt->target == PIPE_TEXTURE_CUBE) {
 261          ps->offset += face * util_format_get_nblocksy(pt->format, u_minify(pt->height0, level)) *
 262                        spt->stride[level];
 263       }
 264       else if (pt->target == PIPE_TEXTURE_3D) {
 265          ps->offset += zslice * util_format_get_nblocksy(pt->format, u_minify(pt->height0, level)) *
 266                        spt->stride[level];
 267       }
 268       else {
 269          assert(face == 0);
 270          assert(zslice == 0);
 271       }
 272    }
 273    return ps;
 274 }
 275
 276
 277 /**
 278  * Free a pipe_surface which was created with softpipe_get_tex_surface().
 279  */
 280 static void
 281 softpipe_tex_surface_destroy(struct pipe_surface *surf)
 282 {
 283    /* Effectively do the texture_update work here - if texture images
 284     * needed post-processing to put them into hardware layout, this is
 285     * where it would happen.  For softpipe, nothing to do.
 286     */
 287    assert(surf->texture);
 288    pipe_texture_reference(&surf->texture, NULL);
 289    FREE(surf);
 290 }
 291
 292
 293 /**
 294  * Geta pipe_transfer object which is used for moving data in/out of
 295  * a texture object.
 296  * \param face  one of PIPE_TEX_FACE_x or 0
 297  * \param level  texture mipmap level
 298  * \param zslice  2D slice of a 3D texture
 299  * \param usage  one of PIPE_TRANSFER_READ/WRITE/READ_WRITE
 300  * \param x  X position of region to read/write
 301  * \param y  Y position of region to read/write
 302  * \param width  width of region to read/write
 303  * \param height  height of region to read/write
 304  */
 305 static struct pipe_transfer *
 306 softpipe_get_tex_transfer(struct pipe_context *pipe,
 307                           struct pipe_texture *texture,
 308                           unsigned face, unsigned level, unsigned zslice,
 309                           enum pipe_transfer_usage usage,
 310                           unsigned x, unsigned y, unsigned w, unsigned h)
 311 {
 312    struct softpipe_texture *sptex = softpipe_texture(texture);
 313    struct softpipe_transfer *spt;
 314
 315    assert(texture);
 316    assert(level <= texture->last_level);
 317
 318    /* make sure the requested region is in the image bounds */
 319    assert(x + w <= u_minify(texture->width0, level));
 320    assert(y + h <= u_minify(texture->height0, level));
 321
 322    spt = CALLOC_STRUCT(softpipe_transfer);
 323    if (spt) {
 324       struct pipe_transfer *pt = &spt->base;
 325       int nblocksy = util_format_get_nblocksy(texture->format, u_minify(texture->height0, level));
 326       pipe_texture_reference(&pt->texture, texture);
 327       pt->x = x;
 328       pt->y = y;
 329       pt->width = w;
 330       pt->height = h;
 331       pt->stride = sptex->stride[level];
 332       pt->usage = usage;
 333       pt->face = face;
 334       pt->level = level;
 335       pt->zslice = zslice;
 336
 337       spt->offset = sptex->level_offset[level];
 338
 339       if (texture->target == PIPE_TEXTURE_CUBE) {
 340          spt->offset += face * nblocksy * pt->stride;
 341       }
 342       else if (texture->target == PIPE_TEXTURE_3D) {
 343          spt->offset += zslice * nblocksy * pt->stride;
 344       }
 345       else {
 346          assert(face == 0);
 347          assert(zslice == 0);
 348       }
 349       return pt;
 350    }
 351    return NULL;
 352 }
 353
 354
 355 /**
 356  * Free a pipe_transfer object which was created with
 357  * softpipe_get_tex_transfer().
 358  */
 359 static void
 360 softpipe_tex_transfer_destroy(struct pipe_context *pipe,
 361                               struct pipe_transfer *transfer)
 362 {
 363    /* Effectively do the texture_update work here - if texture images
 364     * needed post-processing to put them into hardware layout, this is
 365     * where it would happen.  For softpipe, nothing to do.
 366     */
 367    assert (transfer->texture);
 368    pipe_texture_reference(&transfer->texture, NULL);
 369    FREE(transfer);
 370 }
 371
 372
 373 /**
 374  * Create memory mapping for given pipe_transfer object.
 375  */
 376 static void *
 377 softpipe_transfer_map( struct pipe_context *pipe,
 378                        struct pipe_transfer *transfer )
 379 {
 380    ubyte *map, *xfer_map;
 381    struct softpipe_texture *spt;
 382    enum pipe_format format;
 383
 384    assert(transfer->texture);
 385    spt = softpipe_texture(transfer->texture);
 386    format = transfer->texture->format;
 387
 388    if (spt->dt) {
 389       /* display target */
 390       struct sw_winsys *winsys = softpipe_screen(pipe->screen)->winsys;
 391
 392       map = winsys->displaytarget_map(winsys, spt->dt,
 393                                       pipe_transfer_buffer_flags(transfer));
 394       if (map == NULL)
 395          return NULL;
 396    }
 397    else {
 398       map = spt->data;
 399       if (map == NULL)
 400          return NULL;
 401    }
 402
 403    /* May want to different things here depending on read/write nature
 404     * of the map:
 405     */
 406    if (transfer->texture && (transfer->usage & PIPE_TRANSFER_WRITE)) {
 407       /* Do something to notify sharing contexts of a texture change.
 408        * In softpipe, that would mean flushing the texture cache.
 409        */
 410       softpipe_screen(pipe->screen)->timestamp++;
 411    }
 412
 413    xfer_map = map + softpipe_transfer(transfer)->offset +
 414       transfer->y / util_format_get_blockheight(format) * transfer->stride +
 415       transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 416    /*printf("map = %p  xfer map = %p\n", map, xfer_map);*/
 417    return xfer_map;
 418 }
 419
 420
 421 /**
 422  * Unmap memory mapping for given pipe_transfer object.
 423  */
 424 static void
 425 softpipe_transfer_unmap(struct pipe_context *pipe,
 426                         struct pipe_transfer *transfer)
 427 {
 428    struct softpipe_texture *spt;
 429
 430    assert(transfer->texture);
 431    spt = softpipe_texture(transfer->texture);
 432
 433    if (spt->dt) {
 434       /* display target */
 435       struct sw_winsys *winsys = softpipe_screen(pipe->screen)->winsys;
 436       winsys->displaytarget_unmap(winsys, spt->dt);
 437    }
 438
 439    if (transfer->usage & PIPE_TRANSFER_WRITE) {
 440       /* Mark the texture as dirty to expire the tile caches. */
 441       spt->timestamp++;
 442    }
 443 }
 444
 445
 446 static struct pipe_video_surface*
 447 softpipe_video_surface_create(struct pipe_screen *screen,
 448                               enum pipe_video_chroma_format chroma_format,
 449                               unsigned width, unsigned height)
 450 {
 451    struct softpipe_video_surface *sp_vsfc;
 452    struct pipe_texture template;
 453
 454    assert(screen);
 455    assert(width && height);
 456
 457    sp_vsfc = CALLOC_STRUCT(softpipe_video_surface);
 458    if (!sp_vsfc)
 459       return NULL;
 460
 461    pipe_reference_init(&sp_vsfc->base.reference, 1);
 462    sp_vsfc->base.screen = screen;
 463    sp_vsfc->base.chroma_format = chroma_format;
 464    /*sp_vsfc->base.surface_format = PIPE_VIDEO_SURFACE_FORMAT_VUYA;*/
 465    sp_vsfc->base.width = width;
 466    sp_vsfc->base.height = height;
 467
 468    memset(&template, 0, sizeof(struct pipe_texture));
 469    template.target = PIPE_TEXTURE_2D;
 470    template.format = PIPE_FORMAT_B8G8R8X8_UNORM;
 471    template.last_level = 0;
 472    /* vl_mpeg12_mc_renderer expects this when it's initialized with pot_buffers=true */
 473    template.width0 = util_next_power_of_two(width);
 474    template.height0 = util_next_power_of_two(height);
 475    template.depth0 = 1;
 476    template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER | PIPE_TEXTURE_USAGE_RENDER_TARGET;
 477
 478    sp_vsfc->tex = screen->texture_create(screen, &template);
 479    if (!sp_vsfc->tex) {
 480       FREE(sp_vsfc);
 481       return NULL;
 482    }
 483
 484    return &sp_vsfc->base;
 485 }
 486
 487
 488 static void
 489 softpipe_video_surface_destroy(struct pipe_video_surface *vsfc)
 490 {
 491    struct softpipe_video_surface *sp_vsfc = softpipe_video_surface(vsfc);
 492
 493    pipe_texture_reference(&sp_vsfc->tex, NULL);
 494    FREE(sp_vsfc);
 495 }
 496
 497
 498 void
 499 softpipe_init_texture_funcs(struct pipe_context *pipe)
 500 {
 501    pipe->get_tex_transfer = softpipe_get_tex_transfer;
 502    pipe->tex_transfer_destroy = softpipe_tex_transfer_destroy;
 503    pipe->transfer_map = softpipe_transfer_map;
 504    pipe->transfer_unmap = softpipe_transfer_unmap;
 505 }
 506
 507 void
 508 softpipe_init_screen_texture_funcs(struct pipe_screen *screen)
 509 {
 510    screen->texture_create = softpipe_texture_create;
 511    screen->texture_destroy = softpipe_texture_destroy;
 512    screen->texture_from_handle = softpipe_texture_from_handle;
 513    screen->texture_get_handle = softpipe_texture_get_handle;
 514
 515    screen->get_tex_surface = softpipe_get_tex_surface;
 516    screen->tex_surface_destroy = softpipe_tex_surface_destroy;
 517
 518    screen->video_surface_create = softpipe_video_surface_create;
 519    screen->video_surface_destroy = softpipe_video_surface_destroy;
 520 }
 521
 522
 523