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
  52 /* Conventional allocation path for non-display textures:
  53  */
  54 static boolean
  55 llvmpipe_texture_layout(struct llvmpipe_screen *screen,
  56                         struct llvmpipe_texture * lpt)
  57 {
  58    struct pipe_texture *pt = &lpt->base;
  59    unsigned level;
  60    unsigned width = pt->width0;
  61    unsigned height = pt->height0;
  62    unsigned depth = pt->depth0;
  63
  64    unsigned buffer_size = 0;
  65
  66    pf_get_block(lpt->base.format, &lpt->base.block);
  67
  68    for (level = 0; level <= pt->last_level; level++) {
  69       unsigned nblocksx, nblocksy;
  70
  71       pt->nblocksx[level] = pf_get_nblocksx(&pt->block, width);
  72       pt->nblocksy[level] = pf_get_nblocksy(&pt->block, height);
  73
  74       /* Allocate storage for whole quads. This is particularly important
  75        * for depth surfaces, which are currently stored in a swizzled format. */
  76       nblocksx = pf_get_nblocksx(&pt->block, align(width, 2));
  77       nblocksy = pf_get_nblocksy(&pt->block, align(height, 2));
  78
  79       lpt->stride[level] = align(nblocksx*pt->block.size, 16);
  80
  81       lpt->level_offset[level] = buffer_size;
  82
  83       buffer_size += (nblocksy *
  84                       ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
  85                       lpt->stride[level]);
  86
  87       width  = u_minify(width, 1);
  88       height = u_minify(height, 1);
  89       depth = u_minify(depth, 1);
  90    }
  91
  92    lpt->data = align_malloc(buffer_size, 16);
  93
  94    return lpt->data != NULL;
  95 }
  96
  97 static boolean
  98 llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
  99                               struct llvmpipe_texture * lpt)
 100 {
 101    struct llvmpipe_winsys *winsys = screen->winsys;
 102
 103    pf_get_block(lpt->base.format, &lpt->base.block);
 104    lpt->base.nblocksx[0] = pf_get_nblocksx(&lpt->base.block, lpt->base.width0);
 105    lpt->base.nblocksy[0] = pf_get_nblocksy(&lpt->base.block, lpt->base.height0);
 106
 107    lpt->dt = winsys->displaytarget_create(winsys,
 108                                           lpt->base.format,
 109                                           lpt->base.width0,
 110                                           lpt->base.height0,
 111                                           16,
 112                                           &lpt->stride[0] );
 113
 114    return lpt->dt != NULL;
 115 }
 116
 117
 118
 119
 120
 121 static struct pipe_texture *
 122 llvmpipe_texture_create(struct pipe_screen *_screen,
 123                         const struct pipe_texture *templat)
 124 {
 125    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 126    struct llvmpipe_texture *lpt = CALLOC_STRUCT(llvmpipe_texture);
 127    if (!lpt)
 128       return NULL;
 129
 130    lpt->base = *templat;
 131    pipe_reference_init(&lpt->base.reference, 1);
 132    lpt->base.screen = &screen->base;
 133
 134    /* XXX: The xlib state tracker is brain-dead and will request
 135     * PIPE_FORMAT_Z16_UNORM no matter how much we tell it we don't support it.
 136     */
 137    if(lpt->base.format == PIPE_FORMAT_Z16_UNORM)
 138       lpt->base.format = PIPE_FORMAT_Z32_UNORM;
 139
 140    if (lpt->base.tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 141                               PIPE_TEXTURE_USAGE_PRIMARY)) {
 142       if (!llvmpipe_displaytarget_layout(screen, lpt))
 143          goto fail;
 144    }
 145    else {
 146       if (!llvmpipe_texture_layout(screen, lpt))
 147          goto fail;
 148    }
 149
 150    return &lpt->base;
 151
 152  fail:
 153    FREE(lpt);
 154    return NULL;
 155 }
 156
 157
 158 static struct pipe_texture *
 159 llvmpipe_texture_blanket(struct pipe_screen * screen,
 160                          const struct pipe_texture *base,
 161                          const unsigned *stride,
 162                          struct pipe_buffer *buffer)
 163 {
 164    /* FIXME */
 165 #if 0
 166    struct llvmpipe_texture *lpt;
 167    assert(screen);
 168
 169    /* Only supports one type */
 170    if (base->target != PIPE_TEXTURE_2D ||
 171        base->last_level != 0 ||
 172        base->depth0 != 1) {
 173       return NULL;
 174    }
 175
 176    lpt = CALLOC_STRUCT(llvmpipe_texture);
 177    if (!lpt)
 178       return NULL;
 179
 180    lpt->base = *base;
 181    pipe_reference_init(&lpt->base.reference, 1);
 182    lpt->base.screen = screen;
 183    lpt->base.nblocksx[0] = pf_get_nblocksx(&lpt->base.block, lpt->base.width0);
 184    lpt->base.nblocksy[0] = pf_get_nblocksy(&lpt->base.block, lpt->base.height0);
 185    lpt->stride[0] = stride[0];
 186
 187    pipe_buffer_reference(&lpt->buffer, buffer);
 188
 189    return &lpt->base;
 190 #else
 191    return NULL;
 192 #endif
 193 }
 194
 195
 196 static void
 197 llvmpipe_texture_destroy(struct pipe_texture *pt)
 198 {
 199    struct llvmpipe_screen *screen = llvmpipe_screen(pt->screen);
 200    struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
 201
 202    if(lpt->dt) {
 203       struct llvmpipe_winsys *winsys = screen->winsys;
 204       winsys->displaytarget_destroy(winsys, lpt->dt);
 205    }
 206    else
 207       align_free(lpt->data);
 208
 209    FREE(lpt);
 210 }
 211
 212
 213 static struct pipe_surface *
 214 llvmpipe_get_tex_surface(struct pipe_screen *screen,
 215                          struct pipe_texture *pt,
 216                          unsigned face, unsigned level, unsigned zslice,
 217                          unsigned usage)
 218 {
 219    struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
 220    struct pipe_surface *ps;
 221
 222    assert(level <= pt->last_level);
 223
 224    ps = CALLOC_STRUCT(pipe_surface);
 225    if (ps) {
 226       pipe_reference_init(&ps->reference, 1);
 227       pipe_texture_reference(&ps->texture, pt);
 228       ps->format = pt->format;
 229       ps->width = u_minify(pt->width0, level);
 230       ps->height = u_minify(pt->height0, level);
 231       ps->offset = lpt->level_offset[level];
 232       ps->usage = usage;
 233
 234       /* Because we are llvmpipe, anything that the state tracker
 235        * thought was going to be done with the GPU will actually get
 236        * done with the CPU.  Let's adjust the flags to take that into
 237        * account.
 238        */
 239       if (ps->usage & PIPE_BUFFER_USAGE_GPU_WRITE) {
 240          /* GPU_WRITE means "render" and that can involve reads (blending) */
 241          ps->usage |= PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_CPU_READ;
 242       }
 243
 244       if (ps->usage & PIPE_BUFFER_USAGE_GPU_READ)
 245          ps->usage |= PIPE_BUFFER_USAGE_CPU_READ;
 246
 247       if (ps->usage & (PIPE_BUFFER_USAGE_CPU_WRITE |
 248                        PIPE_BUFFER_USAGE_GPU_WRITE)) {
 249          /* Mark the surface as dirty.  The tile cache will look for this. */
 250          lpt->timestamp++;
 251          llvmpipe_screen(screen)->timestamp++;
 252       }
 253
 254       ps->face = face;
 255       ps->level = level;
 256       ps->zslice = zslice;
 257
 258       if (pt->target == PIPE_TEXTURE_CUBE) {
 259          ps->offset += face * pt->nblocksy[level] * lpt->stride[level];
 260       }
 261       else if (pt->target == PIPE_TEXTURE_3D) {
 262          ps->offset += zslice * pt->nblocksy[level] * lpt->stride[level];
 263       }
 264       else {
 265          assert(face == 0);
 266          assert(zslice == 0);
 267       }
 268    }
 269    return ps;
 270 }
 271
 272
 273 static void
 274 llvmpipe_tex_surface_destroy(struct pipe_surface *surf)
 275 {
 276    /* Effectively do the texture_update work here - if texture images
 277     * needed post-processing to put them into hardware layout, this is
 278     * where it would happen.  For llvmpipe, nothing to do.
 279     */
 280    assert(surf->texture);
 281    pipe_texture_reference(&surf->texture, NULL);
 282    FREE(surf);
 283 }
 284
 285
 286 static struct pipe_transfer *
 287 llvmpipe_get_tex_transfer(struct pipe_screen *screen,
 288                           struct pipe_texture *texture,
 289                           unsigned face, unsigned level, unsigned zslice,
 290                           enum pipe_transfer_usage usage,
 291                           unsigned x, unsigned y, unsigned w, unsigned h)
 292 {
 293    struct llvmpipe_texture *lptex = llvmpipe_texture(texture);
 294    struct llvmpipe_transfer *lpt;
 295
 296    assert(texture);
 297    assert(level <= texture->last_level);
 298
 299    lpt = CALLOC_STRUCT(llvmpipe_transfer);
 300    if (lpt) {
 301       struct pipe_transfer *pt = &lpt->base;
 302       pipe_texture_reference(&pt->texture, texture);
 303       pt->format = texture->format;
 304       pt->block = texture->block;
 305       pt->x = x;
 306       pt->y = y;
 307       pt->width = w;
 308       pt->height = h;
 309       pt->nblocksx = texture->nblocksx[level];
 310       pt->nblocksy = texture->nblocksy[level];
 311       pt->stride = lptex->stride[level];
 312       pt->usage = usage;
 313       pt->face = face;
 314       pt->level = level;
 315       pt->zslice = zslice;
 316
 317       lpt->offset = lptex->level_offset[level];
 318
 319       if (texture->target == PIPE_TEXTURE_CUBE) {
 320          lpt->offset += face * pt->nblocksy * pt->stride;
 321       }
 322       else if (texture->target == PIPE_TEXTURE_3D) {
 323          lpt->offset += zslice * pt->nblocksy * pt->stride;
 324       }
 325       else {
 326          assert(face == 0);
 327          assert(zslice == 0);
 328       }
 329       return pt;
 330    }
 331    return NULL;
 332 }
 333
 334
 335 static void
 336 llvmpipe_tex_transfer_destroy(struct pipe_transfer *transfer)
 337 {
 338    /* Effectively do the texture_update work here - if texture images
 339     * needed post-processing to put them into hardware layout, this is
 340     * where it would happen.  For llvmpipe, nothing to do.
 341     */
 342    assert (transfer->texture);
 343    pipe_texture_reference(&transfer->texture, NULL);
 344    FREE(transfer);
 345 }
 346
 347
 348 static void *
 349 llvmpipe_transfer_map( struct pipe_screen *_screen,
 350                        struct pipe_transfer *transfer )
 351 {
 352    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 353    ubyte *map, *xfer_map;
 354    struct llvmpipe_texture *lpt;
 355
 356    assert(transfer->texture);
 357    lpt = llvmpipe_texture(transfer->texture);
 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 / transfer->block.height * transfer->stride +
 383       transfer->x / transfer->block.width * transfer->block.size;
 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 }