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