src/gallium/drivers/llvmpipe/lp_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 "lp_context.h"
  41 #include "lp_state.h"
  42 #include "lp_texture.h"
  43 #include "lp_tex_cache.h"
  44 #include "lp_screen.h"
  45 #include "lp_winsys.h"
  46
  47
  48 /* Simple, maximally packed layout.
  49  */
  50
  51 /* Conventional allocation path for non-display textures:
  52  */
  53 static boolean
  54 llvmpipe_texture_layout(struct llvmpipe_screen *screen,
  55                         struct llvmpipe_texture * lpt)
  56 {
  57    struct pipe_texture *pt = &lpt->base;
  58    unsigned level;
  59    unsigned width = pt->width0;
  60    unsigned height = pt->height0;
  61    unsigned depth = pt->depth0;
  62
  63    unsigned buffer_size = 0;
  64
  65    for (level = 0; level <= pt->last_level; level++) {
  66       unsigned nblocksx, nblocksy;
  67
  68       /* Allocate storage for whole quads. This is particularly important
  69        * for depth surfaces, which are currently stored in a swizzled format. */
  70       nblocksx = pf_get_nblocksx(pt->format, align(width, 2));
  71       nblocksy = pf_get_nblocksy(pt->format, align(height, 2));
  72
  73       lpt->stride[level] = align(nblocksx * pf_get_blocksize(pt->format), 16);
  74
  75       lpt->level_offset[level] = buffer_size;
  76
  77       buffer_size += (nblocksy *
  78                       ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
  79                       lpt->stride[level]);
  80
  81       width  = u_minify(width, 1);
  82       height = u_minify(height, 1);
  83       depth = u_minify(depth, 1);
  84    }
  85
  86    lpt->data = align_malloc(buffer_size, 16);
  87
  88    return lpt->data != NULL;
  89 }
  90
  91 static boolean
  92 llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
  93                               struct llvmpipe_texture * lpt)
  94 {
  95    struct llvmpipe_winsys *winsys = screen->winsys;
  96
  97    lpt->dt = winsys->displaytarget_create(winsys,
  98                                           lpt->base.format,
  99                                           lpt->base.width0,
 100                                           lpt->base.height0,
 101                                           16,
 102                                           &lpt->stride[0] );
 103
 104    return lpt->dt != NULL;
 105 }
 106
 107
 108
 109
 110
 111 static struct pipe_texture *
 112 llvmpipe_texture_create(struct pipe_screen *_screen,
 113                         const struct pipe_texture *templat)
 114 {
 115    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 116    struct llvmpipe_texture *lpt = CALLOC_STRUCT(llvmpipe_texture);
 117    if (!lpt)
 118       return NULL;
 119
 120    lpt->base = *templat;
 121    pipe_reference_init(&lpt->base.reference, 1);
 122    lpt->base.screen = &screen->base;
 123
 124    /* XXX: The xlib state tracker is brain-dead and will request
 125     * PIPE_FORMAT_Z16_UNORM no matter how much we tell it we don't support it.
 126     */
 127    if(lpt->base.format == PIPE_FORMAT_Z16_UNORM)
 128       lpt->base.format = PIPE_FORMAT_Z32_UNORM;
 129
 130    if (lpt->base.tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 131                               PIPE_TEXTURE_USAGE_PRIMARY)) {
 132       if (!llvmpipe_displaytarget_layout(screen, lpt))
 133          goto fail;
 134    }
 135    else {
 136       if (!llvmpipe_texture_layout(screen, lpt))
 137          goto fail;
 138    }
 139
 140    return &lpt->base;
 141
 142  fail:
 143    FREE(lpt);
 144    return NULL;
 145 }
 146
 147
 148 static struct pipe_texture *
 149 llvmpipe_texture_blanket(struct pipe_screen * screen,
 150                          const struct pipe_texture *base,
 151                          const unsigned *stride,
 152                          struct pipe_buffer *buffer)
 153 {
 154    /* FIXME */
 155 #if 0
 156    struct llvmpipe_texture *lpt;
 157    assert(screen);
 158
 159    /* Only supports one type */
 160    if (base->target != PIPE_TEXTURE_2D ||
 161        base->last_level != 0 ||
 162        base->depth0 != 1) {
 163       return NULL;
 164    }
 165
 166    lpt = CALLOC_STRUCT(llvmpipe_texture);
 167    if (!lpt)
 168       return NULL;
 169
 170    lpt->base = *base;
 171    pipe_reference_init(&lpt->base.reference, 1);
 172    lpt->base.screen = screen;
 173    lpt->stride[0] = stride[0];
 174
 175    pipe_buffer_reference(&lpt->buffer, buffer);
 176
 177    return &lpt->base;
 178 #else
 179    return NULL;
 180 #endif
 181 }
 182
 183
 184 static void
 185 llvmpipe_texture_destroy(struct pipe_texture *pt)
 186 {
 187    struct llvmpipe_screen *screen = llvmpipe_screen(pt->screen);
 188    struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
 189
 190    if(lpt->dt) {
 191       struct llvmpipe_winsys *winsys = screen->winsys;
 192       winsys->displaytarget_destroy(winsys, lpt->dt);
 193    }
 194    else
 195       align_free(lpt->data);
 196
 197    FREE(lpt);
 198 }
 199
 200
 201 static struct pipe_surface *
 202 llvmpipe_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 llvmpipe_texture *lpt = llvmpipe_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 = lpt->level_offset[level];
 220       ps->usage = usage;
 221
 222       /* Because we are llvmpipe, 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          lpt->timestamp++;
 239          llvmpipe_screen(screen)->timestamp++;
 240       }
 241
 242       ps->face = face;
 243       ps->level = level;
 244       ps->zslice = zslice;
 245
 246       /* XXX shouldn't that rather be
 247          tex_height = align(ps->height, 2);
 248          to account for alignment done in llvmpipe_texture_layout ?
 249       */
 250       if (pt->target == PIPE_TEXTURE_CUBE) {
 251          unsigned tex_height = ps->height;
 252          ps->offset += face * pf_get_nblocksy(pt->format, tex_height) * lpt->stride[level];
 253       }
 254       else if (pt->target == PIPE_TEXTURE_3D) {
 255          unsigned tex_height = ps->height;
 256          ps->offset += zslice * pf_get_nblocksy(pt->format, tex_height) * lpt->stride[level];
 257       }
 258       else {
 259          assert(face == 0);
 260          assert(zslice == 0);
 261       }
 262    }
 263    return ps;
 264 }
 265
 266
 267 static void
 268 llvmpipe_tex_surface_destroy(struct pipe_surface *surf)
 269 {
 270    /* Effectively do the texture_update work here - if texture images
 271     * needed post-processing to put them into hardware layout, this is
 272     * where it would happen.  For llvmpipe, nothing to do.
 273     */
 274    assert(surf->texture);
 275    pipe_texture_reference(&surf->texture, NULL);
 276    FREE(surf);
 277 }
 278
 279
 280 static struct pipe_transfer *
 281 llvmpipe_get_tex_transfer(struct pipe_screen *screen,
 282                           struct pipe_texture *texture,
 283                           unsigned face, unsigned level, unsigned zslice,
 284                           enum pipe_transfer_usage usage,
 285                           unsigned x, unsigned y, unsigned w, unsigned h)
 286 {
 287    struct llvmpipe_texture *lptex = llvmpipe_texture(texture);
 288    struct llvmpipe_transfer *lpt;
 289
 290    assert(texture);
 291    assert(level <= texture->last_level);
 292
 293    lpt = CALLOC_STRUCT(llvmpipe_transfer);
 294    if (lpt) {
 295       struct pipe_transfer *pt = &lpt->base;
 296       pipe_texture_reference(&pt->texture, texture);
 297       pt->x = x;
 298       pt->y = y;
 299       pt->width = w;
 300       pt->height = h;
 301       pt->stride = lptex->stride[level];
 302       pt->usage = usage;
 303       pt->face = face;
 304       pt->level = level;
 305       pt->zslice = zslice;
 306
 307       lpt->offset = lptex->level_offset[level];
 308
 309       /* XXX shouldn't that rather be
 310          tex_height = align(u_minify(texture->height0, level), 2)
 311          to account for alignment done in llvmpipe_texture_layout ?
 312       */
 313       if (texture->target == PIPE_TEXTURE_CUBE) {
 314          unsigned tex_height = u_minify(texture->height0, level);
 315          lpt->offset += face *  pf_get_nblocksy(texture->format, tex_height) * pt->stride;
 316       }
 317       else if (texture->target == PIPE_TEXTURE_3D) {
 318          unsigned tex_height = u_minify(texture->height0, level);
 319          lpt->offset += zslice * pf_get_nblocksy(texture->format, tex_height) * pt->stride;
 320       }
 321       else {
 322          assert(face == 0);
 323          assert(zslice == 0);
 324       }
 325       return pt;
 326    }
 327    return NULL;
 328 }
 329
 330
 331 static void
 332 llvmpipe_tex_transfer_destroy(struct pipe_transfer *transfer)
 333 {
 334    /* Effectively do the texture_update work here - if texture images
 335     * needed post-processing to put them into hardware layout, this is
 336     * where it would happen.  For llvmpipe, nothing to do.
 337     */
 338    assert (transfer->texture);
 339    pipe_texture_reference(&transfer->texture, NULL);
 340    FREE(transfer);
 341 }
 342
 343
 344 static void *
 345 llvmpipe_transfer_map( struct pipe_screen *_screen,
 346                        struct pipe_transfer *transfer )
 347 {
 348    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 349    ubyte *map, *xfer_map;
 350    struct llvmpipe_texture *lpt;
 351    enum pipe_format format;
 352
 353    assert(transfer->texture);
 354    lpt = llvmpipe_texture(transfer->texture);
 355    format = lpt->base.format;
 356
 357    if(lpt->dt) {
 358       struct llvmpipe_winsys *winsys = screen->winsys;
 359
 360       map = winsys->displaytarget_map(winsys, lpt->dt,
 361                                       pipe_transfer_buffer_flags(transfer));
 362       if (map == NULL)
 363          return NULL;
 364    }
 365    else
 366       map = lpt->data;
 367
 368    /* May want to different things here depending on read/write nature
 369     * of the map:
 370     */
 371    if (transfer->texture && (transfer->usage & PIPE_TRANSFER_WRITE))
 372    {
 373       /* Do something to notify sharing contexts of a texture change.
 374        * In llvmpipe, that would mean flushing the texture cache.
 375        */
 376       screen->timestamp++;
 377    }
 378
 379    xfer_map = map + llvmpipe_transfer(transfer)->offset +
 380       transfer->y / pf_get_blockheight(format) * transfer->stride +
 381       transfer->x / pf_get_blockwidth(format) * pf_get_blocksize(format);
 382    /*printf("map = %p  xfer map = %p\n", map, xfer_map);*/
 383    return xfer_map;
 384 }
 385
 386
 387 static void
 388 llvmpipe_transfer_unmap(struct pipe_screen *_screen,
 389                        struct pipe_transfer *transfer)
 390 {
 391    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 392    struct llvmpipe_texture *lpt;
 393
 394    assert(transfer->texture);
 395    lpt = llvmpipe_texture(transfer->texture);
 396
 397    if(lpt->dt) {
 398       struct llvmpipe_winsys *winsys = screen->winsys;
 399       winsys->displaytarget_unmap(winsys, lpt->dt);
 400    }
 401 }
 402
 403
 404 void
 405 llvmpipe_init_texture_funcs(struct llvmpipe_context *lp)
 406 {
 407 }
 408
 409
 410 void
 411 llvmpipe_init_screen_texture_funcs(struct pipe_screen *screen)
 412 {
 413    screen->texture_create = llvmpipe_texture_create;
 414    screen->texture_blanket = llvmpipe_texture_blanket;
 415    screen->texture_destroy = llvmpipe_texture_destroy;
 416
 417    screen->get_tex_surface = llvmpipe_get_tex_surface;
 418    screen->tex_surface_destroy = llvmpipe_tex_surface_destroy;
 419
 420    screen->get_tex_transfer = llvmpipe_get_tex_transfer;
 421    screen->tex_transfer_destroy = llvmpipe_tex_transfer_destroy;
 422    screen->transfer_map = llvmpipe_transfer_map;
 423    screen->transfer_unmap = llvmpipe_transfer_unmap;
 424 }