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->width[0];
  56    unsigned height = pt->height[0];
  57    unsigned depth = pt->depth[0];
  58
  59    unsigned buffer_size = 0;
  60
  61    for (level = 0; level <= pt->last_level; level++) {
  62       pt->width[level] = width;
  63       pt->height[level] = height;
  64       pt->depth[level] = depth;
  65       pt->nblocksx[level] = pf_get_nblocksx(&pt->block, width);
  66       pt->nblocksy[level] = pf_get_nblocksy(&pt->block, height);
  67       spt->stride[level] = pt->nblocksx[level]*pt->block.size;
  68
  69       spt->level_offset[level] = buffer_size;
  70
  71       buffer_size += (pt->nblocksy[level] *
  72                       ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
  73                       spt->stride[level]);
  74
  75       width  = minify(width);
  76       height = minify(height);
  77       depth = minify(depth);
  78    }
  79
  80    spt->buffer = screen->buffer_create(screen, 32,
  81                                        PIPE_BUFFER_USAGE_PIXEL,
  82                                        buffer_size);
  83
  84    return spt->buffer != NULL;
  85 }
  86
  87
  88 /**
  89  * Texture layout for simple color buffers.
  90  */
  91 static boolean
  92 softpipe_displaytarget_layout(struct pipe_screen *screen,
  93                               struct softpipe_texture * spt)
  94 {
  95    unsigned usage = (PIPE_BUFFER_USAGE_CPU_READ_WRITE |
  96                      PIPE_BUFFER_USAGE_GPU_READ_WRITE);
  97    unsigned tex_usage = spt->base.tex_usage;
  98
  99    spt->base.nblocksx[0] = pf_get_nblocksx(&spt->base.block, spt->base.width[0]);
 100    spt->base.nblocksy[0] = pf_get_nblocksy(&spt->base.block, spt->base.height[0]);
 101
 102    spt->buffer = screen->surface_buffer_create( screen,
 103                                                 spt->base.width[0],
 104                                                 spt->base.height[0],
 105                                                 spt->base.format,
 106                                                 usage,
 107                                                 tex_usage,
 108                                                 &spt->stride[0]);
 109
 110    return spt->buffer != NULL;
 111 }
 112
 113
 114 static struct pipe_texture *
 115 softpipe_texture_create(struct pipe_screen *screen,
 116                         const struct pipe_texture *template)
 117 {
 118    struct softpipe_texture *spt = CALLOC_STRUCT(softpipe_texture);
 119    if (!spt)
 120       return NULL;
 121
 122    spt->base = *template;
 123    pipe_reference_init(&spt->base.reference, 1);
 124    spt->base.screen = screen;
 125
 126    spt->pot = (util_is_power_of_two(template->width[0]) &&
 127                util_is_power_of_two(template->height[0]) &&
 128                util_is_power_of_two(template->depth[0]));
 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       if (ps->usage & (PIPE_BUFFER_USAGE_CPU_WRITE |
 226                        PIPE_BUFFER_USAGE_GPU_WRITE)) {
 227          /* Mark the surface as dirty.  The tile cache will look for this. */
 228          spt->timestamp++;
 229          softpipe_screen(screen)->timestamp++;
 230       }
 231
 232       ps->face = face;
 233       ps->level = level;
 234       ps->zslice = zslice;
 235
 236       if (pt->target == PIPE_TEXTURE_CUBE) {
 237          ps->offset += face * pt->nblocksy[level] * spt->stride[level];
 238       }
 239       else if (pt->target == PIPE_TEXTURE_3D) {
 240          ps->offset += zslice * pt->nblocksy[level] * spt->stride[level];
 241       }
 242       else {
 243          assert(face == 0);
 244          assert(zslice == 0);
 245       }
 246    }
 247    return ps;
 248 }
 249
 250
 251 static void
 252 softpipe_tex_surface_destroy(struct pipe_surface *surf)
 253 {
 254    /* Effectively do the texture_update work here - if texture images
 255     * needed post-processing to put them into hardware layout, this is
 256     * where it would happen.  For softpipe, nothing to do.
 257     */
 258    assert(surf->texture);
 259    pipe_texture_reference(&surf->texture, NULL);
 260    FREE(surf);
 261 }
 262
 263
 264 static struct pipe_transfer *
 265 softpipe_get_tex_transfer(struct pipe_screen *screen,
 266                           struct pipe_texture *texture,
 267                           unsigned face, unsigned level, unsigned zslice,
 268                           enum pipe_transfer_usage usage,
 269                           unsigned x, unsigned y, unsigned w, unsigned h)
 270 {
 271    struct softpipe_texture *sptex = softpipe_texture(texture);
 272    struct softpipe_transfer *spt;
 273
 274    assert(texture);
 275    assert(level <= texture->last_level);
 276
 277    spt = CALLOC_STRUCT(softpipe_transfer);
 278    if (spt) {
 279       struct pipe_transfer *pt = &spt->base;
 280       pipe_texture_reference(&pt->texture, texture);
 281       pt->format = texture->format;
 282       pt->block = texture->block;
 283       pt->x = x;
 284       pt->y = y;
 285       pt->width = w;
 286       pt->height = h;
 287       pt->nblocksx = texture->nblocksx[level];
 288       pt->nblocksy = texture->nblocksy[level];
 289       pt->stride = sptex->stride[level];
 290       pt->usage = usage;
 291       pt->face = face;
 292       pt->level = level;
 293       pt->zslice = zslice;
 294
 295       spt->offset = sptex->level_offset[level];
 296
 297       if (texture->target == PIPE_TEXTURE_CUBE) {
 298          spt->offset += face * pt->nblocksy * pt->stride;
 299       }
 300       else if (texture->target == PIPE_TEXTURE_3D) {
 301          spt->offset += zslice * pt->nblocksy * pt->stride;
 302       }
 303       else {
 304          assert(face == 0);
 305          assert(zslice == 0);
 306       }
 307       return pt;
 308    }
 309    return NULL;
 310 }
 311
 312
 313 static void
 314 softpipe_tex_transfer_destroy(struct pipe_transfer *transfer)
 315 {
 316    /* Effectively do the texture_update work here - if texture images
 317     * needed post-processing to put them into hardware layout, this is
 318     * where it would happen.  For softpipe, nothing to do.
 319     */
 320    assert (transfer->texture);
 321    pipe_texture_reference(&transfer->texture, NULL);
 322    FREE(transfer);
 323 }
 324
 325
 326 static void *
 327 softpipe_transfer_map( struct pipe_screen *screen,
 328                        struct pipe_transfer *transfer )
 329 {
 330    ubyte *map, *xfer_map;
 331    struct softpipe_texture *spt;
 332
 333    assert(transfer->texture);
 334    spt = softpipe_texture(transfer->texture);
 335
 336    map = pipe_buffer_map(screen, spt->buffer, pipe_transfer_buffer_flags(transfer));
 337    if (map == NULL)
 338       return NULL;
 339
 340    /* May want to different things here depending on read/write nature
 341     * of the map:
 342     */
 343    if (transfer->texture && (transfer->usage & PIPE_TRANSFER_WRITE)) {
 344       /* Do something to notify sharing contexts of a texture change.
 345        * In softpipe, that would mean flushing the texture cache.
 346        */
 347       softpipe_screen(screen)->timestamp++;
 348    }
 349
 350    xfer_map = map + softpipe_transfer(transfer)->offset +
 351       transfer->y / transfer->block.height * transfer->stride +
 352       transfer->x / transfer->block.width * transfer->block.size;
 353    /*printf("map = %p  xfer map = %p\n", map, xfer_map);*/
 354    return xfer_map;
 355 }
 356
 357
 358 static void
 359 softpipe_transfer_unmap(struct pipe_screen *screen,
 360                         struct pipe_transfer *transfer)
 361 {
 362    struct softpipe_texture *spt;
 363
 364    assert(transfer->texture);
 365    spt = softpipe_texture(transfer->texture);
 366
 367    pipe_buffer_unmap( screen, spt->buffer );
 368
 369    if (transfer->usage & PIPE_TRANSFER_WRITE) {
 370       /* Mark the texture as dirty to expire the tile caches. */
 371       spt->timestamp++;
 372    }
 373 }
 374
 375 static struct pipe_video_surface*
 376 softpipe_video_surface_create(struct pipe_screen *screen,
 377                               enum pipe_video_chroma_format chroma_format,
 378                               unsigned width, unsigned height)
 379 {
 380    struct softpipe_video_surface *sp_vsfc;
 381    struct pipe_texture template;
 382
 383    assert(screen);
 384    assert(width && height);
 385
 386    sp_vsfc = CALLOC_STRUCT(softpipe_video_surface);
 387    if (!sp_vsfc)
 388       return NULL;
 389
 390    pipe_reference_init(&sp_vsfc->base.reference, 1);
 391    sp_vsfc->base.screen = screen;
 392    sp_vsfc->base.chroma_format = chroma_format;
 393    /*sp_vsfc->base.surface_format = PIPE_VIDEO_SURFACE_FORMAT_VUYA;*/
 394    sp_vsfc->base.width = width;
 395    sp_vsfc->base.height = height;
 396
 397    memset(&template, 0, sizeof(struct pipe_texture));
 398    template.target = PIPE_TEXTURE_2D;
 399    template.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 400    template.last_level = 0;
 401    /* vl_mpeg12_mc_renderer expects this when it's initialized with pot_buffers=true */
 402    template.width[0] = util_next_power_of_two(width);
 403    template.height[0] = util_next_power_of_two(height);
 404    template.depth[0] = 1;
 405    pf_get_block(template.format, &template.block);
 406    template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER | PIPE_TEXTURE_USAGE_RENDER_TARGET;
 407
 408    sp_vsfc->tex = screen->texture_create(screen, &template);
 409    if (!sp_vsfc->tex) {
 410       FREE(sp_vsfc);
 411       return NULL;
 412    }
 413
 414    return &sp_vsfc->base;
 415 }
 416
 417
 418 static void
 419 softpipe_video_surface_destroy(struct pipe_video_surface *vsfc)
 420 {
 421    struct softpipe_video_surface *sp_vsfc = softpipe_video_surface(vsfc);
 422
 423    pipe_texture_reference(&sp_vsfc->tex, NULL);
 424    FREE(sp_vsfc);
 425 }
 426
 427
 428 void
 429 softpipe_init_screen_texture_funcs(struct pipe_screen *screen)
 430 {
 431    screen->texture_create = softpipe_texture_create;
 432    screen->texture_blanket = softpipe_texture_blanket;
 433    screen->texture_destroy = softpipe_texture_destroy;
 434
 435    screen->get_tex_surface = softpipe_get_tex_surface;
 436    screen->tex_surface_destroy = softpipe_tex_surface_destroy;
 437
 438    screen->get_tex_transfer = softpipe_get_tex_transfer;
 439    screen->tex_transfer_destroy = softpipe_tex_transfer_destroy;
 440    screen->transfer_map = softpipe_transfer_map;
 441    screen->transfer_unmap = softpipe_transfer_unmap;
 442
 443    screen->video_surface_create = softpipe_video_surface_create;
 444    screen->video_surface_destroy = softpipe_video_surface_destroy;
 445 }
 446
 447
 448 boolean
 449 softpipe_get_texture_buffer( struct pipe_texture *texture,
 450                              struct pipe_buffer **buf,
 451                              unsigned *stride )
 452 {
 453    struct softpipe_texture *tex = (struct softpipe_texture *) texture;
 454
 455    if (!tex)
 456       return FALSE;
 457
 458    pipe_buffer_reference(buf, tex->buffer);
 459
 460    if (stride)
 461       *stride = tex->stride[0];
 462
 463    return TRUE;
 464 }