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
  38 #include "util/u_format.h"
  39 #include "util/u_math.h"
  40 #include "util/u_memory.h"
  41
  42 #include "lp_context.h"
  43 #include "lp_state.h"
  44 #include "lp_texture.h"
  45 #include "lp_tex_cache.h"
  46 #include "lp_screen.h"
  47 #include "lp_winsys.h"
  48
  49
  50 /* Simple, maximally packed layout.
  51  */
  52
  53 /* Conventional allocation path for non-display textures:
  54  */
  55 static boolean
  56 llvmpipe_texture_layout(struct llvmpipe_screen *screen,
  57                         struct llvmpipe_texture * lpt)
  58 {
  59    struct pipe_texture *pt = &lpt->base;
  60    unsigned level;
  61    unsigned width = pt->width0;
  62    unsigned height = pt->height0;
  63    unsigned depth = pt->depth0;
  64
  65    unsigned buffer_size = 0;
  66
  67    for (level = 0; level <= pt->last_level; level++) {
  68       unsigned nblocksx, nblocksy;
  69
  70       /* Allocate storage for whole quads. This is particularly important
  71        * for depth surfaces, which are currently stored in a swizzled format. */
  72       nblocksx = util_format_get_nblocksx(pt->format, align(width, 2));
  73       nblocksy = util_format_get_nblocksy(pt->format, align(height, 2));
  74
  75       lpt->stride[level] = align(nblocksx * util_format_get_blocksize(pt->format), 16);
  76
  77       lpt->level_offset[level] = buffer_size;
  78
  79       buffer_size += (nblocksy *
  80                       ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
  81                       lpt->stride[level]);
  82
  83       width  = u_minify(width, 1);
  84       height = u_minify(height, 1);
  85       depth = u_minify(depth, 1);
  86    }
  87
  88    lpt->data = align_malloc(buffer_size, 16);
  89
  90    return lpt->data != NULL;
  91 }
  92
  93 static boolean
  94 llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
  95                               struct llvmpipe_texture * lpt)
  96 {
  97    struct llvmpipe_winsys *winsys = screen->winsys;
  98
  99    lpt->dt = winsys->displaytarget_create(winsys,
 100                                           lpt->base.format,
 101                                           lpt->base.width0,
 102                                           lpt->base.height0,
 103                                           16,
 104                                           &lpt->stride[0] );
 105
 106    return lpt->dt != NULL;
 107 }
 108
 109
 110
 111
 112
 113 static struct pipe_texture *
 114 llvmpipe_texture_create(struct pipe_screen *_screen,
 115                         const struct pipe_texture *templat)
 116 {
 117    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 118    struct llvmpipe_texture *lpt = CALLOC_STRUCT(llvmpipe_texture);
 119    if (!lpt)
 120       return NULL;
 121
 122    lpt->base = *templat;
 123    pipe_reference_init(&lpt->base.reference, 1);
 124    lpt->base.screen = &screen->base;
 125
 126    /* XXX: The xlib state tracker is brain-dead and will request
 127     * PIPE_FORMAT_Z16_UNORM no matter how much we tell it we don't support it.
 128     */
 129    if(lpt->base.format == PIPE_FORMAT_Z16_UNORM)
 130       lpt->base.format = PIPE_FORMAT_Z32_UNORM;
 131
 132    if (lpt->base.tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 133                               PIPE_TEXTURE_USAGE_PRIMARY)) {
 134       if (!llvmpipe_displaytarget_layout(screen, lpt))
 135          goto fail;
 136    }
 137    else {
 138       if (!llvmpipe_texture_layout(screen, lpt))
 139          goto fail;
 140    }
 141
 142    return &lpt->base;
 143
 144  fail:
 145    FREE(lpt);
 146    return NULL;
 147 }
 148
 149
 150 static struct pipe_texture *
 151 llvmpipe_texture_blanket(struct pipe_screen * screen,
 152                          const struct pipe_texture *base,
 153                          const unsigned *stride,
 154                          struct pipe_buffer *buffer)
 155 {
 156    /* FIXME */
 157 #if 0
 158    struct llvmpipe_texture *lpt;
 159    assert(screen);
 160
 161    /* Only supports one type */
 162    if (base->target != PIPE_TEXTURE_2D ||
 163        base->last_level != 0 ||
 164        base->depth0 != 1) {
 165       return NULL;
 166    }
 167
 168    lpt = CALLOC_STRUCT(llvmpipe_texture);
 169    if (!lpt)
 170       return NULL;
 171
 172    lpt->base = *base;
 173    pipe_reference_init(&lpt->base.reference, 1);
 174    lpt->base.screen = screen;
 175    lpt->stride[0] = stride[0];
 176
 177    pipe_buffer_reference(&lpt->buffer, buffer);
 178
 179    return &lpt->base;
 180 #else
 181    return NULL;
 182 #endif
 183 }
 184
 185
 186 static void
 187 llvmpipe_texture_destroy(struct pipe_texture *pt)
 188 {
 189    struct llvmpipe_screen *screen = llvmpipe_screen(pt->screen);
 190    struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
 191
 192    if(lpt->dt) {
 193       struct llvmpipe_winsys *winsys = screen->winsys;
 194       winsys->displaytarget_destroy(winsys, lpt->dt);
 195    }
 196    else
 197       align_free(lpt->data);
 198
 199    FREE(lpt);
 200 }
 201
 202
 203 static struct pipe_surface *
 204 llvmpipe_get_tex_surface(struct pipe_screen *screen,
 205                          struct pipe_texture *pt,
 206                          unsigned face, unsigned level, unsigned zslice,
 207                          unsigned usage)
 208 {
 209    struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
 210    struct pipe_surface *ps;
 211
 212    assert(level <= pt->last_level);
 213
 214    ps = CALLOC_STRUCT(pipe_surface);
 215    if (ps) {
 216       pipe_reference_init(&ps->reference, 1);
 217       pipe_texture_reference(&ps->texture, pt);
 218       ps->format = pt->format;
 219       ps->width = u_minify(pt->width0, level);
 220       ps->height = u_minify(pt->height0, level);
 221       ps->offset = lpt->level_offset[level];
 222       ps->usage = usage;
 223
 224       /* Because we are llvmpipe, anything that the state tracker
 225        * thought was going to be done with the GPU will actually get
 226        * done with the CPU.  Let's adjust the flags to take that into
 227        * account.
 228        */
 229       if (ps->usage & PIPE_BUFFER_USAGE_GPU_WRITE) {
 230          /* GPU_WRITE means "render" and that can involve reads (blending) */
 231          ps->usage |= PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_CPU_READ;
 232       }
 233
 234       if (ps->usage & PIPE_BUFFER_USAGE_GPU_READ)
 235          ps->usage |= PIPE_BUFFER_USAGE_CPU_READ;
 236
 237       if (ps->usage & (PIPE_BUFFER_USAGE_CPU_WRITE |
 238                        PIPE_BUFFER_USAGE_GPU_WRITE)) {
 239          /* Mark the surface as dirty.  The tile cache will look for this. */
 240          lpt->timestamp++;
 241          llvmpipe_screen(screen)->timestamp++;
 242       }
 243
 244       ps->face = face;
 245       ps->level = level;
 246       ps->zslice = zslice;
 247
 248       /* XXX shouldn't that rather be
 249          tex_height = align(ps->height, 2);
 250          to account for alignment done in llvmpipe_texture_layout ?
 251       */
 252       if (pt->target == PIPE_TEXTURE_CUBE) {
 253          unsigned tex_height = ps->height;
 254          ps->offset += face * util_format_get_nblocksy(pt->format, tex_height) * lpt->stride[level];
 255       }
 256       else if (pt->target == PIPE_TEXTURE_3D) {
 257          unsigned tex_height = ps->height;
 258          ps->offset += zslice * util_format_get_nblocksy(pt->format, tex_height) * lpt->stride[level];
 259       }
 260       else {
 261          assert(face == 0);
 262          assert(zslice == 0);
 263       }
 264    }
 265    return ps;
 266 }
 267
 268
 269 static void
 270 llvmpipe_tex_surface_destroy(struct pipe_surface *surf)
 271 {
 272    /* Effectively do the texture_update work here - if texture images
 273     * needed post-processing to put them into hardware layout, this is
 274     * where it would happen.  For llvmpipe, nothing to do.
 275     */
 276    assert(surf->texture);
 277    pipe_texture_reference(&surf->texture, NULL);
 278    FREE(surf);
 279 }
 280
 281
 282 static struct pipe_transfer *
 283 llvmpipe_get_tex_transfer(struct pipe_screen *screen,
 284                           struct pipe_texture *texture,
 285                           unsigned face, unsigned level, unsigned zslice,
 286                           enum pipe_transfer_usage usage,
 287                           unsigned x, unsigned y, unsigned w, unsigned h)
 288 {
 289    struct llvmpipe_texture *lptex = llvmpipe_texture(texture);
 290    struct llvmpipe_transfer *lpt;
 291
 292    assert(texture);
 293    assert(level <= texture->last_level);
 294
 295    lpt = CALLOC_STRUCT(llvmpipe_transfer);
 296    if (lpt) {
 297       struct pipe_transfer *pt = &lpt->base;
 298       pipe_texture_reference(&pt->texture, texture);
 299       pt->x = x;
 300       pt->y = y;
 301       pt->width = w;
 302       pt->height = h;
 303       pt->stride = lptex->stride[level];
 304       pt->usage = usage;
 305       pt->face = face;
 306       pt->level = level;
 307       pt->zslice = zslice;
 308
 309       lpt->offset = lptex->level_offset[level];
 310
 311       /* XXX shouldn't that rather be
 312          tex_height = align(u_minify(texture->height0, level), 2)
 313          to account for alignment done in llvmpipe_texture_layout ?
 314       */
 315       if (texture->target == PIPE_TEXTURE_CUBE) {
 316          unsigned tex_height = u_minify(texture->height0, level);
 317          lpt->offset += face *  util_format_get_nblocksy(texture->format, tex_height) * pt->stride;
 318       }
 319       else if (texture->target == PIPE_TEXTURE_3D) {
 320          unsigned tex_height = u_minify(texture->height0, level);
 321          lpt->offset += zslice * util_format_get_nblocksy(texture->format, tex_height) * pt->stride;
 322       }
 323       else {
 324          assert(face == 0);
 325          assert(zslice == 0);
 326       }
 327       return pt;
 328    }
 329    return NULL;
 330 }
 331
 332
 333 static void
 334 llvmpipe_tex_transfer_destroy(struct pipe_transfer *transfer)
 335 {
 336    /* Effectively do the texture_update work here - if texture images
 337     * needed post-processing to put them into hardware layout, this is
 338     * where it would happen.  For llvmpipe, nothing to do.
 339     */
 340    assert (transfer->texture);
 341    pipe_texture_reference(&transfer->texture, NULL);
 342    FREE(transfer);
 343 }
 344
 345
 346 static void *
 347 llvmpipe_transfer_map( struct pipe_screen *_screen,
 348                        struct pipe_transfer *transfer )
 349 {
 350    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 351    ubyte *map, *xfer_map;
 352    struct llvmpipe_texture *lpt;
 353    enum pipe_format format;
 354
 355    assert(transfer->texture);
 356    lpt = llvmpipe_texture(transfer->texture);
 357    format = lpt->base.format;
 358
 359    if(lpt->dt) {
 360       struct llvmpipe_winsys *winsys = screen->winsys;
 361
 362       map = winsys->displaytarget_map(winsys, lpt->dt,
 363                                       pipe_transfer_buffer_flags(transfer));
 364       if (map == NULL)
 365          return NULL;
 366    }
 367    else
 368       map = lpt->data;
 369
 370    /* May want to different things here depending on read/write nature
 371     * of the map:
 372     */
 373    if (transfer->texture && (transfer->usage & PIPE_TRANSFER_WRITE))
 374    {
 375       /* Do something to notify sharing contexts of a texture change.
 376        * In llvmpipe, that would mean flushing the texture cache.
 377        */
 378       screen->timestamp++;
 379    }
 380
 381    xfer_map = map + llvmpipe_transfer(transfer)->offset +
 382       transfer->y / util_format_get_blockheight(format) * transfer->stride +
 383       transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 384    /*printf("map = %p  xfer map = %p\n", map, xfer_map);*/
 385    return xfer_map;
 386 }
 387
 388
 389 static void
 390 llvmpipe_transfer_unmap(struct pipe_screen *_screen,
 391                        struct pipe_transfer *transfer)
 392 {
 393    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 394    struct llvmpipe_texture *lpt;
 395
 396    assert(transfer->texture);
 397    lpt = llvmpipe_texture(transfer->texture);
 398
 399    if(lpt->dt) {
 400       struct llvmpipe_winsys *winsys = screen->winsys;
 401       winsys->displaytarget_unmap(winsys, lpt->dt);
 402    }
 403 }
 404
 405
 406 void
 407 llvmpipe_init_texture_funcs(struct llvmpipe_context *lp)
 408 {
 409 }
 410
 411
 412 void
 413 llvmpipe_init_screen_texture_funcs(struct pipe_screen *screen)
 414 {
 415    screen->texture_create = llvmpipe_texture_create;
 416    screen->texture_blanket = llvmpipe_texture_blanket;
 417    screen->texture_destroy = llvmpipe_texture_destroy;
 418
 419    screen->get_tex_surface = llvmpipe_get_tex_surface;
 420    screen->tex_surface_destroy = llvmpipe_tex_surface_destroy;
 421
 422    screen->get_tex_transfer = llvmpipe_get_tex_transfer;
 423    screen->tex_transfer_destroy = llvmpipe_tex_transfer_destroy;
 424    screen->transfer_map = llvmpipe_transfer_map;
 425    screen->transfer_unmap = llvmpipe_transfer_unmap;
 426 }