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->width[0];
  61    unsigned height = pt->height[0];
  62    unsigned depth = pt->depth[0];
  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->width[level] = width;
  72       pt->height[level] = height;
  73       pt->depth[level] = depth;
  74       pt->nblocksx[level] = pf_get_nblocksx(&pt->block, width);
  75       pt->nblocksy[level] = pf_get_nblocksy(&pt->block, height);
  76
  77       /* Allocate storage for whole quads. This is particularly important
  78        * for depth surfaces, which are currently stored in a swizzled format. */
  79       nblocksx = pf_get_nblocksx(&pt->block, align(width, 2));
  80       nblocksy = pf_get_nblocksy(&pt->block, align(height, 2));
  81
  82       lpt->stride[level] = align(nblocksx*pt->block.size, 16);
  83
  84       lpt->level_offset[level] = buffer_size;
  85
  86       buffer_size += (nblocksy *
  87                       ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
  88                       lpt->stride[level]);
  89
  90       width  = minify(width);
  91       height = minify(height);
  92       depth = minify(depth);
  93    }
  94
  95    lpt->data = align_malloc(buffer_size, 16);
  96
  97    return lpt->data != NULL;
  98 }
  99
 100 static boolean
 101 llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
 102                               struct llvmpipe_texture * lpt)
 103 {
 104    struct llvmpipe_winsys *winsys = screen->winsys;
 105
 106    pf_get_block(lpt->base.format, &lpt->base.block);
 107    lpt->base.nblocksx[0] = pf_get_nblocksx(&lpt->base.block, lpt->base.width[0]);
 108    lpt->base.nblocksy[0] = pf_get_nblocksy(&lpt->base.block, lpt->base.height[0]);
 109
 110    lpt->dt = winsys->displaytarget_create(winsys,
 111                                           lpt->base.format,
 112                                           lpt->base.width[0],
 113                                           lpt->base.height[0],
 114                                           16,
 115                                           &lpt->stride[0] );
 116
 117    return lpt->dt != NULL;
 118 }
 119
 120
 121
 122
 123
 124 static struct pipe_texture *
 125 llvmpipe_texture_create(struct pipe_screen *_screen,
 126                         const struct pipe_texture *templat)
 127 {
 128    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 129    struct llvmpipe_texture *lpt = CALLOC_STRUCT(llvmpipe_texture);
 130    if (!lpt)
 131       return NULL;
 132
 133    lpt->base = *templat;
 134    pipe_reference_init(&lpt->base.reference, 1);
 135    lpt->base.screen = &screen->base;
 136
 137    /* XXX: The xlib state tracker is brain-dead and will request
 138     * PIPE_FORMAT_Z16_UNORM no matter how much we tell it we don't support it.
 139     */
 140    if(lpt->base.format == PIPE_FORMAT_Z16_UNORM)
 141       lpt->base.format = PIPE_FORMAT_Z32_UNORM;
 142
 143    if (lpt->base.tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 144                               PIPE_TEXTURE_USAGE_PRIMARY)) {
 145       if (!llvmpipe_displaytarget_layout(screen, lpt))
 146          goto fail;
 147    }
 148    else {
 149       if (!llvmpipe_texture_layout(screen, lpt))
 150          goto fail;
 151    }
 152
 153    return &lpt->base;
 154
 155  fail:
 156    FREE(lpt);
 157    return NULL;
 158 }
 159
 160
 161 static struct pipe_texture *
 162 llvmpipe_texture_blanket(struct pipe_screen * screen,
 163                          const struct pipe_texture *base,
 164                          const unsigned *stride,
 165                          struct pipe_buffer *buffer)
 166 {
 167    /* FIXME */
 168 #if 0
 169    struct llvmpipe_texture *lpt;
 170    assert(screen);
 171
 172    /* Only supports one type */
 173    if (base->target != PIPE_TEXTURE_2D ||
 174        base->last_level != 0 ||
 175        base->depth[0] != 1) {
 176       return NULL;
 177    }
 178
 179    lpt = CALLOC_STRUCT(llvmpipe_texture);
 180    if (!lpt)
 181       return NULL;
 182
 183    lpt->base = *base;
 184    pipe_reference_init(&lpt->base.reference, 1);
 185    lpt->base.screen = screen;
 186    lpt->base.nblocksx[0] = pf_get_nblocksx(&lpt->base.block, lpt->base.width[0]);
 187    lpt->base.nblocksy[0] = pf_get_nblocksy(&lpt->base.block, lpt->base.height[0]);
 188    lpt->stride[0] = stride[0];
 189
 190    pipe_buffer_reference(&lpt->buffer, buffer);
 191
 192    return &lpt->base;
 193 #else
 194    return NULL;
 195 #endif
 196 }
 197
 198
 199 static void
 200 llvmpipe_texture_destroy(struct pipe_texture *pt)
 201 {
 202    struct llvmpipe_screen *screen = llvmpipe_screen(pt->screen);
 203    struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
 204
 205    if(lpt->dt) {
 206       struct llvmpipe_winsys *winsys = screen->winsys;
 207       winsys->displaytarget_destroy(winsys, lpt->dt);
 208    }
 209    else
 210       align_free(lpt->data);
 211
 212    FREE(lpt);
 213 }
 214
 215
 216 static struct pipe_surface *
 217 llvmpipe_get_tex_surface(struct pipe_screen *screen,
 218                          struct pipe_texture *pt,
 219                          unsigned face, unsigned level, unsigned zslice,
 220                          unsigned usage)
 221 {
 222    struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
 223    struct pipe_surface *ps;
 224
 225    assert(level <= pt->last_level);
 226
 227    ps = CALLOC_STRUCT(pipe_surface);
 228    if (ps) {
 229       pipe_reference_init(&ps->reference, 1);
 230       pipe_texture_reference(&ps->texture, pt);
 231       ps->format = pt->format;
 232       ps->width = pt->width[level];
 233       ps->height = pt->height[level];
 234       ps->offset = lpt->level_offset[level];
 235       ps->usage = usage;
 236
 237       /* Because we are llvmpipe, anything that the state tracker
 238        * thought was going to be done with the GPU will actually get
 239        * done with the CPU.  Let's adjust the flags to take that into
 240        * account.
 241        */
 242       if (ps->usage & PIPE_BUFFER_USAGE_GPU_WRITE) {
 243          /* GPU_WRITE means "render" and that can involve reads (blending) */
 244          ps->usage |= PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_CPU_READ;
 245       }
 246
 247       if (ps->usage & PIPE_BUFFER_USAGE_GPU_READ)
 248          ps->usage |= PIPE_BUFFER_USAGE_CPU_READ;
 249
 250       if (ps->usage & (PIPE_BUFFER_USAGE_CPU_WRITE |
 251                        PIPE_BUFFER_USAGE_GPU_WRITE)) {
 252          /* Mark the surface as dirty.  The tile cache will look for this. */
 253          lpt->timestamp++;
 254          llvmpipe_screen(screen)->timestamp++;
 255       }
 256
 257       ps->face = face;
 258       ps->level = level;
 259       ps->zslice = zslice;
 260
 261       if (pt->target == PIPE_TEXTURE_CUBE) {
 262          ps->offset += face * pt->nblocksy[level] * lpt->stride[level];
 263       }
 264       else if (pt->target == PIPE_TEXTURE_3D) {
 265          ps->offset += zslice * pt->nblocksy[level] * lpt->stride[level];
 266       }
 267       else {
 268          assert(face == 0);
 269          assert(zslice == 0);
 270       }
 271    }
 272    return ps;
 273 }
 274
 275
 276 static void
 277 llvmpipe_tex_surface_destroy(struct pipe_surface *surf)
 278 {
 279    /* Effectively do the texture_update work here - if texture images
 280     * needed post-processing to put them into hardware layout, this is
 281     * where it would happen.  For llvmpipe, nothing to do.
 282     */
 283    assert(surf->texture);
 284    pipe_texture_reference(&surf->texture, NULL);
 285    FREE(surf);
 286 }
 287
 288
 289 static struct pipe_transfer *
 290 llvmpipe_get_tex_transfer(struct pipe_screen *screen,
 291                           struct pipe_texture *texture,
 292                           unsigned face, unsigned level, unsigned zslice,
 293                           enum pipe_transfer_usage usage,
 294                           unsigned x, unsigned y, unsigned w, unsigned h)
 295 {
 296    struct llvmpipe_texture *lptex = llvmpipe_texture(texture);
 297    struct llvmpipe_transfer *lpt;
 298
 299    assert(texture);
 300    assert(level <= texture->last_level);
 301
 302    lpt = CALLOC_STRUCT(llvmpipe_transfer);
 303    if (lpt) {
 304       struct pipe_transfer *pt = &lpt->base;
 305       pipe_texture_reference(&pt->texture, texture);
 306       pt->format = texture->format;
 307       pt->block = texture->block;
 308       pt->x = x;
 309       pt->y = y;
 310       pt->width = w;
 311       pt->height = h;
 312       pt->nblocksx = texture->nblocksx[level];
 313       pt->nblocksy = texture->nblocksy[level];
 314       pt->stride = lptex->stride[level];
 315       pt->usage = usage;
 316       pt->face = face;
 317       pt->level = level;
 318       pt->zslice = zslice;
 319
 320       lpt->offset = lptex->level_offset[level];
 321
 322       if (texture->target == PIPE_TEXTURE_CUBE) {
 323          lpt->offset += face * pt->nblocksy * pt->stride;
 324       }
 325       else if (texture->target == PIPE_TEXTURE_3D) {
 326          lpt->offset += zslice * pt->nblocksy * pt->stride;
 327       }
 328       else {
 329          assert(face == 0);
 330          assert(zslice == 0);
 331       }
 332       return pt;
 333    }
 334    return NULL;
 335 }
 336
 337
 338 static void
 339 llvmpipe_tex_transfer_destroy(struct pipe_transfer *transfer)
 340 {
 341    /* Effectively do the texture_update work here - if texture images
 342     * needed post-processing to put them into hardware layout, this is
 343     * where it would happen.  For llvmpipe, nothing to do.
 344     */
 345    assert (transfer->texture);
 346    pipe_texture_reference(&transfer->texture, NULL);
 347    FREE(transfer);
 348 }
 349
 350
 351 static void *
 352 llvmpipe_transfer_map( struct pipe_screen *_screen,
 353                        struct pipe_transfer *transfer )
 354 {
 355    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 356    ubyte *map, *xfer_map;
 357    struct llvmpipe_texture *lpt;
 358
 359    assert(transfer->texture);
 360    lpt = llvmpipe_texture(transfer->texture);
 361
 362    if(lpt->dt) {
 363       struct llvmpipe_winsys *winsys = screen->winsys;
 364
 365       map = winsys->displaytarget_map(winsys, lpt->dt,
 366                                       pipe_transfer_buffer_flags(transfer));
 367       if (map == NULL)
 368          return NULL;
 369    }
 370    else
 371       map = lpt->data;
 372
 373    /* May want to different things here depending on read/write nature
 374     * of the map:
 375     */
 376    if (transfer->texture && (transfer->usage & PIPE_TRANSFER_WRITE))
 377    {
 378       /* Do something to notify sharing contexts of a texture change.
 379        * In llvmpipe, that would mean flushing the texture cache.
 380        */
 381       screen->timestamp++;
 382    }
 383
 384    xfer_map = map + llvmpipe_transfer(transfer)->offset +
 385       transfer->y / transfer->block.height * transfer->stride +
 386       transfer->x / transfer->block.width * transfer->block.size;
 387    /*printf("map = %p  xfer map = %p\n", map, xfer_map);*/
 388    return xfer_map;
 389 }
 390
 391
 392 static void
 393 llvmpipe_transfer_unmap(struct pipe_screen *_screen,
 394                        struct pipe_transfer *transfer)
 395 {
 396    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 397    struct llvmpipe_texture *lpt;
 398
 399    assert(transfer->texture);
 400    lpt = llvmpipe_texture(transfer->texture);
 401
 402    if(lpt->dt) {
 403       struct llvmpipe_winsys *winsys = screen->winsys;
 404       winsys->displaytarget_unmap(winsys, lpt->dt);
 405    }
 406 }
 407
 408
 409 void
 410 llvmpipe_init_texture_funcs(struct llvmpipe_context *lp)
 411 {
 412 }
 413
 414
 415 void
 416 llvmpipe_init_screen_texture_funcs(struct pipe_screen *screen)
 417 {
 418    screen->texture_create = llvmpipe_texture_create;
 419    screen->texture_blanket = llvmpipe_texture_blanket;
 420    screen->texture_destroy = llvmpipe_texture_destroy;
 421
 422    screen->get_tex_surface = llvmpipe_get_tex_surface;
 423    screen->tex_surface_destroy = llvmpipe_tex_surface_destroy;
 424
 425    screen->get_tex_transfer = llvmpipe_get_tex_transfer;
 426    screen->tex_transfer_destroy = llvmpipe_tex_transfer_destroy;
 427    screen->transfer_map = llvmpipe_transfer_map;
 428    screen->transfer_unmap = llvmpipe_transfer_unmap;
 429 }