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.format,
  95                                           spt->base.width0,
  96                                           spt->base.height0,
  97                                           16,
  98                                           &spt->stride[0] );
  99
 100    return spt->dt != NULL;
 101 }
 102
 103
 104 /**
 105  * Create new pipe_texture given the template information.
 106  */
 107 static struct pipe_texture *
 108 softpipe_texture_create(struct pipe_screen *screen,
 109                         const struct pipe_texture *template)
 110 {
 111    struct softpipe_texture *spt = CALLOC_STRUCT(softpipe_texture);
 112    if (!spt)
 113       return NULL;
 114
 115    spt->base = *template;
 116    pipe_reference_init(&spt->base.reference, 1);
 117    spt->base.screen = screen;
 118
 119    spt->pot = (util_is_power_of_two(template->width0) &&
 120                util_is_power_of_two(template->height0) &&
 121                util_is_power_of_two(template->depth0));
 122
 123    if (spt->base.tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 124                               PIPE_TEXTURE_USAGE_SCANOUT |
 125                               PIPE_TEXTURE_USAGE_SHARED)) {
 126       if (!softpipe_displaytarget_layout(screen, spt))
 127          goto fail;
 128    }
 129    else {
 130       if (!softpipe_texture_layout(screen, spt))
 131          goto fail;
 132    }
 133
 134    return &spt->base;
 135
 136  fail:
 137    FREE(spt);
 138    return NULL;
 139 }
 140
 141
 142
 143
 144 static void
 145 softpipe_texture_destroy(struct pipe_texture *pt)
 146 {
 147    struct softpipe_screen *screen = softpipe_screen(pt->screen);
 148    struct softpipe_texture *spt = softpipe_texture(pt);
 149
 150    if (spt->dt) {
 151       /* display target */
 152       struct sw_winsys *winsys = screen->winsys;
 153       winsys->displaytarget_destroy(winsys, spt->dt);
 154    }
 155    else {
 156       /* regular texture */
 157       align_free(spt->data);
 158    }
 159
 160    FREE(spt);
 161 }
 162
 163
 164 /**
 165  * Get a pipe_surface "view" into a texture.
 166  */
 167 static struct pipe_surface *
 168 softpipe_get_tex_surface(struct pipe_screen *screen,
 169                          struct pipe_texture *pt,
 170                          unsigned face, unsigned level, unsigned zslice,
 171                          unsigned usage)
 172 {
 173    struct softpipe_texture *spt = softpipe_texture(pt);
 174    struct pipe_surface *ps;
 175
 176    assert(level <= pt->last_level);
 177
 178    ps = CALLOC_STRUCT(pipe_surface);
 179    if (ps) {
 180       pipe_reference_init(&ps->reference, 1);
 181       pipe_texture_reference(&ps->texture, pt);
 182       ps->format = pt->format;
 183       ps->width = u_minify(pt->width0, level);
 184       ps->height = u_minify(pt->height0, level);
 185       ps->offset = spt->level_offset[level];
 186       ps->usage = usage;
 187
 188       /* Because we are softpipe, anything that the state tracker
 189        * thought was going to be done with the GPU will actually get
 190        * done with the CPU.  Let's adjust the flags to take that into
 191        * account.
 192        */
 193       if (ps->usage & PIPE_BUFFER_USAGE_GPU_WRITE) {
 194          /* GPU_WRITE means "render" and that can involve reads (blending) */
 195          ps->usage |= PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_CPU_READ;
 196       }
 197
 198       if (ps->usage & PIPE_BUFFER_USAGE_GPU_READ)
 199          ps->usage |= PIPE_BUFFER_USAGE_CPU_READ;
 200
 201       if (ps->usage & (PIPE_BUFFER_USAGE_CPU_WRITE |
 202                        PIPE_BUFFER_USAGE_GPU_WRITE)) {
 203          /* Mark the surface as dirty.  The tile cache will look for this. */
 204          spt->timestamp++;
 205          softpipe_screen(screen)->timestamp++;
 206       }
 207
 208       ps->face = face;
 209       ps->level = level;
 210       ps->zslice = zslice;
 211
 212       if (pt->target == PIPE_TEXTURE_CUBE) {
 213          ps->offset += face * util_format_get_nblocksy(pt->format, u_minify(pt->height0, level)) *
 214                        spt->stride[level];
 215       }
 216       else if (pt->target == PIPE_TEXTURE_3D) {
 217          ps->offset += zslice * util_format_get_nblocksy(pt->format, u_minify(pt->height0, level)) *
 218                        spt->stride[level];
 219       }
 220       else {
 221          assert(face == 0);
 222          assert(zslice == 0);
 223       }
 224    }
 225    return ps;
 226 }
 227
 228
 229 /**
 230  * Free a pipe_surface which was created with softpipe_get_tex_surface().
 231  */
 232 static void
 233 softpipe_tex_surface_destroy(struct pipe_surface *surf)
 234 {
 235    /* Effectively do the texture_update work here - if texture images
 236     * needed post-processing to put them into hardware layout, this is
 237     * where it would happen.  For softpipe, nothing to do.
 238     */
 239    assert(surf->texture);
 240    pipe_texture_reference(&surf->texture, NULL);
 241    FREE(surf);
 242 }
 243
 244
 245 /**
 246  * Geta pipe_transfer object which is used for moving data in/out of
 247  * a texture object.
 248  * \param face  one of PIPE_TEX_FACE_x or 0
 249  * \param level  texture mipmap level
 250  * \param zslice  2D slice of a 3D texture
 251  * \param usage  one of PIPE_TRANSFER_READ/WRITE/READ_WRITE
 252  * \param x  X position of region to read/write
 253  * \param y  Y position of region to read/write
 254  * \param width  width of region to read/write
 255  * \param height  height of region to read/write
 256  */
 257 static struct pipe_transfer *
 258 softpipe_get_tex_transfer(struct pipe_context *pipe,
 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    /* make sure the requested region is in the image bounds */
 271    assert(x + w <= u_minify(texture->width0, level));
 272    assert(y + h <= u_minify(texture->height0, level));
 273
 274    spt = CALLOC_STRUCT(softpipe_transfer);
 275    if (spt) {
 276       struct pipe_transfer *pt = &spt->base;
 277       int nblocksy = util_format_get_nblocksy(texture->format, u_minify(texture->height0, level));
 278       pipe_texture_reference(&pt->texture, texture);
 279       pt->x = x;
 280       pt->y = y;
 281       pt->width = w;
 282       pt->height = h;
 283       pt->stride = sptex->stride[level];
 284       pt->usage = usage;
 285       pt->face = face;
 286       pt->level = level;
 287       pt->zslice = zslice;
 288
 289       spt->offset = sptex->level_offset[level];
 290
 291       if (texture->target == PIPE_TEXTURE_CUBE) {
 292          spt->offset += face * nblocksy * pt->stride;
 293       }
 294       else if (texture->target == PIPE_TEXTURE_3D) {
 295          spt->offset += zslice * nblocksy * pt->stride;
 296       }
 297       else {
 298          assert(face == 0);
 299          assert(zslice == 0);
 300       }
 301       return pt;
 302    }
 303    return NULL;
 304 }
 305
 306
 307 /**
 308  * Free a pipe_transfer object which was created with
 309  * softpipe_get_tex_transfer().
 310  */
 311 static void
 312 softpipe_tex_transfer_destroy(struct pipe_context *pipe,
 313                               struct pipe_transfer *transfer)
 314 {
 315    /* Effectively do the texture_update work here - if texture images
 316     * needed post-processing to put them into hardware layout, this is
 317     * where it would happen.  For softpipe, nothing to do.
 318     */
 319    assert (transfer->texture);
 320    pipe_texture_reference(&transfer->texture, NULL);
 321    FREE(transfer);
 322 }
 323
 324
 325 /**
 326  * Create memory mapping for given pipe_transfer object.
 327  */
 328 static void *
 329 softpipe_transfer_map( struct pipe_context *pipe,
 330                        struct pipe_transfer *transfer )
 331 {
 332    ubyte *map, *xfer_map;
 333    struct softpipe_texture *spt;
 334    enum pipe_format format;
 335
 336    assert(transfer->texture);
 337    spt = softpipe_texture(transfer->texture);
 338    format = transfer->texture->format;
 339
 340    if (spt->dt) {
 341       /* display target */
 342       struct sw_winsys *winsys = softpipe_screen(pipe->screen)->winsys;
 343
 344       map = winsys->displaytarget_map(winsys, spt->dt,
 345                                       pipe_transfer_buffer_flags(transfer));
 346       if (map == NULL)
 347          return NULL;
 348    }
 349    else {
 350       map = spt->data;
 351       if (map == NULL)
 352          return NULL;
 353    }
 354
 355    /* May want to different things here depending on read/write nature
 356     * of the map:
 357     */
 358    if (transfer->texture && (transfer->usage & PIPE_TRANSFER_WRITE)) {
 359       /* Do something to notify sharing contexts of a texture change.
 360        * In softpipe, that would mean flushing the texture cache.
 361        */
 362       softpipe_screen(pipe->screen)->timestamp++;
 363    }
 364
 365    xfer_map = map + softpipe_transfer(transfer)->offset +
 366       transfer->y / util_format_get_blockheight(format) * transfer->stride +
 367       transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 368    /*printf("map = %p  xfer map = %p\n", map, xfer_map);*/
 369    return xfer_map;
 370 }
 371
 372
 373 /**
 374  * Unmap memory mapping for given pipe_transfer object.
 375  */
 376 static void
 377 softpipe_transfer_unmap(struct pipe_context *pipe,
 378                         struct pipe_transfer *transfer)
 379 {
 380    struct softpipe_texture *spt;
 381
 382    assert(transfer->texture);
 383    spt = softpipe_texture(transfer->texture);
 384
 385    if (spt->dt) {
 386       /* display target */
 387       struct sw_winsys *winsys = softpipe_screen(pipe->screen)->winsys;
 388       winsys->displaytarget_unmap(winsys, spt->dt);
 389    }
 390
 391    if (transfer->usage & PIPE_TRANSFER_WRITE) {
 392       /* Mark the texture as dirty to expire the tile caches. */
 393       spt->timestamp++;
 394    }
 395 }
 396
 397
 398 static struct pipe_video_surface*
 399 softpipe_video_surface_create(struct pipe_screen *screen,
 400                               enum pipe_video_chroma_format chroma_format,
 401                               unsigned width, unsigned height)
 402 {
 403    struct softpipe_video_surface *sp_vsfc;
 404    struct pipe_texture template;
 405
 406    assert(screen);
 407    assert(width && height);
 408
 409    sp_vsfc = CALLOC_STRUCT(softpipe_video_surface);
 410    if (!sp_vsfc)
 411       return NULL;
 412
 413    pipe_reference_init(&sp_vsfc->base.reference, 1);
 414    sp_vsfc->base.screen = screen;
 415    sp_vsfc->base.chroma_format = chroma_format;
 416    /*sp_vsfc->base.surface_format = PIPE_VIDEO_SURFACE_FORMAT_VUYA;*/
 417    sp_vsfc->base.width = width;
 418    sp_vsfc->base.height = height;
 419
 420    memset(&template, 0, sizeof(struct pipe_texture));
 421    template.target = PIPE_TEXTURE_2D;
 422    template.format = PIPE_FORMAT_B8G8R8X8_UNORM;
 423    template.last_level = 0;
 424    /* vl_mpeg12_mc_renderer expects this when it's initialized with pot_buffers=true */
 425    template.width0 = util_next_power_of_two(width);
 426    template.height0 = util_next_power_of_two(height);
 427    template.depth0 = 1;
 428    template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER | PIPE_TEXTURE_USAGE_RENDER_TARGET;
 429
 430    sp_vsfc->tex = screen->texture_create(screen, &template);
 431    if (!sp_vsfc->tex) {
 432       FREE(sp_vsfc);
 433       return NULL;
 434    }
 435
 436    return &sp_vsfc->base;
 437 }
 438
 439
 440 static void
 441 softpipe_video_surface_destroy(struct pipe_video_surface *vsfc)
 442 {
 443    struct softpipe_video_surface *sp_vsfc = softpipe_video_surface(vsfc);
 444
 445    pipe_texture_reference(&sp_vsfc->tex, NULL);
 446    FREE(sp_vsfc);
 447 }
 448
 449
 450 void
 451 softpipe_init_texture_funcs(struct pipe_context *pipe)
 452 {
 453    pipe->get_tex_transfer = softpipe_get_tex_transfer;
 454    pipe->tex_transfer_destroy = softpipe_tex_transfer_destroy;
 455    pipe->transfer_map = softpipe_transfer_map;
 456    pipe->transfer_unmap = softpipe_transfer_unmap;
 457 }
 458
 459 void
 460 softpipe_init_screen_texture_funcs(struct pipe_screen *screen)
 461 {
 462    screen->texture_create = softpipe_texture_create;
 463    screen->texture_destroy = softpipe_texture_destroy;
 464
 465    screen->get_tex_surface = softpipe_get_tex_surface;
 466    screen->tex_surface_destroy = softpipe_tex_surface_destroy;
 467
 468    screen->video_surface_create = softpipe_video_surface_create;
 469    screen->video_surface_destroy = softpipe_video_surface_destroy;
 470 }
 471
 472
 473