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 "util/u_math.h"
  37 #include "util/u_memory.h"
  38
  39 #include "lp_context.h"
  40 #include "lp_state.h"
  41 #include "lp_texture.h"
  42 #include "lp_screen.h"
  43 #include "lp_winsys.h"
  44
  45
  46 /* Simple, maximally packed layout.
  47  */
  48
  49
  50 /* Conventional allocation path for non-display textures:
  51  */
  52 static boolean
  53 llvmpipe_texture_layout(struct llvmpipe_screen *screen,
  54                         struct llvmpipe_texture * lpt)
  55 {
  56    struct pipe_texture *pt = &lpt->base;
  57    unsigned level;
  58    unsigned width = pt->width[0];
  59    unsigned height = pt->height[0];
  60    unsigned depth = pt->depth[0];
  61
  62    unsigned buffer_size = 0;
  63
  64    pf_get_block(lpt->base.format, &lpt->base.block);
  65
  66    for (level = 0; level <= pt->last_level; level++) {
  67       unsigned nblocksx, nblocksy;
  68
  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
  75       /* Allocate storage for whole quads. This is particularly important
  76        * for depth surfaces, which are currently stored in a swizzled format. */
  77       nblocksx = pf_get_nblocksx(&pt->block, align(width, 2));
  78       nblocksy = pf_get_nblocksy(&pt->block, align(height, 2));
  79
  80       lpt->stride[level] = align(nblocksx*pt->block.size, 16);
  81
  82       lpt->level_offset[level] = buffer_size;
  83
  84       buffer_size += (nblocksy *
  85                       ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
  86                       lpt->stride[level]);
  87
  88       width  = minify(width);
  89       height = minify(height);
  90       depth = minify(depth);
  91    }
  92
  93    lpt->data = align_malloc(buffer_size, 16);
  94
  95    return lpt->data != NULL;
  96 }
  97
  98 static boolean
  99 llvmpipe_displaytarget_layout(struct llvmpipe_screen *screen,
 100                               struct llvmpipe_texture * lpt)
 101 {
 102    struct llvmpipe_winsys *winsys = screen->winsys;
 103
 104    pf_get_block(lpt->base.format, &lpt->base.block);
 105    lpt->base.nblocksx[0] = pf_get_nblocksx(&lpt->base.block, lpt->base.width[0]);
 106    lpt->base.nblocksy[0] = pf_get_nblocksy(&lpt->base.block, lpt->base.height[0]);
 107
 108    lpt->dt = winsys->displaytarget_create(winsys,
 109                                           lpt->base.format,
 110                                           lpt->base.width[0],
 111                                           lpt->base.height[0],
 112                                           16,
 113                                           &lpt->stride[0] );
 114
 115    return lpt->dt != NULL;
 116 }
 117
 118
 119
 120
 121
 122 static struct pipe_texture *
 123 llvmpipe_texture_create(struct pipe_screen *_screen,
 124                         const struct pipe_texture *templat)
 125 {
 126    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 127    struct llvmpipe_texture *lpt = CALLOC_STRUCT(llvmpipe_texture);
 128    if (!lpt)
 129       return NULL;
 130
 131    lpt->base = *templat;
 132    pipe_reference_init(&lpt->base.reference, 1);
 133    lpt->base.screen = &screen->base;
 134
 135    /* XXX: The xlib state tracker is brain-dead and will request
 136     * PIPE_FORMAT_Z16_UNORM no matter how much we tell it we don't support it.
 137     */
 138    if(lpt->base.format == PIPE_FORMAT_Z16_UNORM)
 139       lpt->base.format = PIPE_FORMAT_Z32_UNORM;
 140
 141    if (lpt->base.tex_usage & (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 142                               PIPE_TEXTURE_USAGE_PRIMARY)) {
 143       if (!llvmpipe_displaytarget_layout(screen, lpt))
 144          goto fail;
 145    }
 146    else {
 147       if (!llvmpipe_texture_layout(screen, lpt))
 148          goto fail;
 149    }
 150
 151    return &lpt->base;
 152
 153  fail:
 154    FREE(lpt);
 155    return NULL;
 156 }
 157
 158
 159 static struct pipe_texture *
 160 llvmpipe_texture_blanket(struct pipe_screen * screen,
 161                          const struct pipe_texture *base,
 162                          const unsigned *stride,
 163                          struct pipe_buffer *buffer)
 164 {
 165    /* FIXME */
 166 #if 0
 167    struct llvmpipe_texture *lpt;
 168    assert(screen);
 169
 170    /* Only supports one type */
 171    if (base->target != PIPE_TEXTURE_2D ||
 172        base->last_level != 0 ||
 173        base->depth[0] != 1) {
 174       return NULL;
 175    }
 176
 177    lpt = CALLOC_STRUCT(llvmpipe_texture);
 178    if (!lpt)
 179       return NULL;
 180
 181    lpt->base = *base;
 182    pipe_reference_init(&lpt->base.reference, 1);
 183    lpt->base.screen = screen;
 184    lpt->base.nblocksx[0] = pf_get_nblocksx(&lpt->base.block, lpt->base.width[0]);
 185    lpt->base.nblocksy[0] = pf_get_nblocksy(&lpt->base.block, lpt->base.height[0]);
 186    lpt->stride[0] = stride[0];
 187
 188    pipe_buffer_reference(&lpt->buffer, buffer);
 189
 190    return &lpt->base;
 191 #else
 192    return NULL;
 193 #endif
 194 }
 195
 196
 197 static void
 198 llvmpipe_texture_destroy(struct pipe_texture *pt)
 199 {
 200    struct llvmpipe_screen *screen = llvmpipe_screen(pt->screen);
 201    struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
 202
 203    if(lpt->dt) {
 204       struct llvmpipe_winsys *winsys = screen->winsys;
 205       winsys->displaytarget_destroy(winsys, lpt->dt);
 206    }
 207    else
 208       align_free(lpt->data);
 209
 210    FREE(lpt);
 211 }
 212
 213
 214 static struct pipe_surface *
 215 llvmpipe_get_tex_surface(struct pipe_screen *screen,
 216                          struct pipe_texture *pt,
 217                          unsigned face, unsigned level, unsigned zslice,
 218                          unsigned usage)
 219 {
 220    struct llvmpipe_texture *lpt = llvmpipe_texture(pt);
 221    struct pipe_surface *ps;
 222
 223    assert(level <= pt->last_level);
 224
 225    ps = CALLOC_STRUCT(pipe_surface);
 226    if (ps) {
 227       pipe_reference_init(&ps->reference, 1);
 228       pipe_texture_reference(&ps->texture, pt);
 229       ps->format = pt->format;
 230       ps->width = pt->width[level];
 231       ps->height = pt->height[level];
 232       ps->offset = lpt->level_offset[level];
 233       ps->usage = usage;
 234
 235       /* Because we are llvmpipe, anything that the state tracker
 236        * thought was going to be done with the GPU will actually get
 237        * done with the CPU.  Let's adjust the flags to take that into
 238        * account.
 239        */
 240       if (ps->usage & PIPE_BUFFER_USAGE_GPU_WRITE) {
 241          /* GPU_WRITE means "render" and that can involve reads (blending) */
 242          ps->usage |= PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_CPU_READ;
 243       }
 244
 245       if (ps->usage & PIPE_BUFFER_USAGE_GPU_READ)
 246          ps->usage |= PIPE_BUFFER_USAGE_CPU_READ;
 247
 248       if (ps->usage & (PIPE_BUFFER_USAGE_CPU_WRITE |
 249                        PIPE_BUFFER_USAGE_GPU_WRITE)) {
 250          /* Mark the surface as dirty.  The tile cache will look for this. */
 251          lpt->timestamp++;
 252          llvmpipe_screen(screen)->timestamp++;
 253       }
 254
 255       ps->face = face;
 256       ps->level = level;
 257       ps->zslice = zslice;
 258
 259       if (pt->target == PIPE_TEXTURE_CUBE) {
 260          ps->offset += face * pt->nblocksy[level] * lpt->stride[level];
 261       }
 262       else if (pt->target == PIPE_TEXTURE_3D) {
 263          ps->offset += zslice * pt->nblocksy[level] * lpt->stride[level];
 264       }
 265       else {
 266          assert(face == 0);
 267          assert(zslice == 0);
 268       }
 269    }
 270    return ps;
 271 }
 272
 273
 274 static void
 275 llvmpipe_tex_surface_destroy(struct pipe_surface *surf)
 276 {
 277    /* Effectively do the texture_update work here - if texture images
 278     * needed post-processing to put them into hardware layout, this is
 279     * where it would happen.  For llvmpipe, nothing to do.
 280     */
 281    assert(surf->texture);
 282    pipe_texture_reference(&surf->texture, NULL);
 283    FREE(surf);
 284 }
 285
 286
 287 static struct pipe_transfer *
 288 llvmpipe_get_tex_transfer(struct pipe_screen *screen,
 289                           struct pipe_texture *texture,
 290                           unsigned face, unsigned level, unsigned zslice,
 291                           enum pipe_transfer_usage usage,
 292                           unsigned x, unsigned y, unsigned w, unsigned h)
 293 {
 294    struct llvmpipe_texture *lptex = llvmpipe_texture(texture);
 295    struct llvmpipe_transfer *lpt;
 296
 297    assert(texture);
 298    assert(level <= texture->last_level);
 299
 300    lpt = CALLOC_STRUCT(llvmpipe_transfer);
 301    if (lpt) {
 302       struct pipe_transfer *pt = &lpt->base;
 303       pipe_texture_reference(&pt->texture, texture);
 304       pt->format = texture->format;
 305       pt->block = texture->block;
 306       pt->x = x;
 307       pt->y = y;
 308       pt->width = w;
 309       pt->height = h;
 310       pt->nblocksx = texture->nblocksx[level];
 311       pt->nblocksy = texture->nblocksy[level];
 312       pt->stride = lptex->stride[level];
 313       pt->usage = usage;
 314       pt->face = face;
 315       pt->level = level;
 316       pt->zslice = zslice;
 317
 318       lpt->offset = lptex->level_offset[level];
 319
 320       if (texture->target == PIPE_TEXTURE_CUBE) {
 321          lpt->offset += face * pt->nblocksy * pt->stride;
 322       }
 323       else if (texture->target == PIPE_TEXTURE_3D) {
 324          lpt->offset += zslice * pt->nblocksy * pt->stride;
 325       }
 326       else {
 327          assert(face == 0);
 328          assert(zslice == 0);
 329       }
 330       return pt;
 331    }
 332    return NULL;
 333 }
 334
 335
 336 static void
 337 llvmpipe_tex_transfer_destroy(struct pipe_transfer *transfer)
 338 {
 339    /* Effectively do the texture_update work here - if texture images
 340     * needed post-processing to put them into hardware layout, this is
 341     * where it would happen.  For llvmpipe, nothing to do.
 342     */
 343    assert (transfer->texture);
 344    pipe_texture_reference(&transfer->texture, NULL);
 345    FREE(transfer);
 346 }
 347
 348
 349 static void *
 350 llvmpipe_transfer_map( struct pipe_screen *_screen,
 351                        struct pipe_transfer *transfer )
 352 {
 353    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 354    ubyte *map, *xfer_map;
 355    struct llvmpipe_texture *lpt;
 356
 357    assert(transfer->texture);
 358    lpt = llvmpipe_texture(transfer->texture);
 359
 360    if(lpt->dt) {
 361       struct llvmpipe_winsys *winsys = screen->winsys;
 362
 363       map = winsys->displaytarget_map(winsys, lpt->dt,
 364                                       pipe_transfer_buffer_flags(transfer));
 365       if (map == NULL)
 366          return NULL;
 367    }
 368    else
 369       map = lpt->data;
 370
 371    /* May want to different things here depending on read/write nature
 372     * of the map:
 373     */
 374    if (transfer->texture && (transfer->usage & PIPE_TRANSFER_WRITE))
 375    {
 376       /* Do something to notify sharing contexts of a texture change.
 377        * In llvmpipe, that would mean flushing the texture cache.
 378        */
 379       screen->timestamp++;
 380    }
 381
 382    xfer_map = map + llvmpipe_transfer(transfer)->offset +
 383       transfer->y / transfer->block.height * transfer->stride +
 384       transfer->x / transfer->block.width * transfer->block.size;
 385    /*printf("map = %p  xfer map = %p\n", map, xfer_map);*/
 386    return xfer_map;
 387 }
 388
 389
 390 static void
 391 llvmpipe_transfer_unmap(struct pipe_screen *_screen,
 392                        struct pipe_transfer *transfer)
 393 {
 394    struct llvmpipe_screen *screen = llvmpipe_screen(_screen);
 395    struct llvmpipe_texture *lpt;
 396
 397    assert(transfer->texture);
 398    lpt = llvmpipe_texture(transfer->texture);
 399
 400    if(lpt->dt) {
 401       struct llvmpipe_winsys *winsys = screen->winsys;
 402       winsys->displaytarget_unmap(winsys, lpt->dt);
 403    }
 404 }
 405
 406
 407 void
 408 llvmpipe_init_texture_funcs(struct llvmpipe_context *lp)
 409 {
 410 }
 411
 412
 413 void
 414 llvmpipe_init_screen_texture_funcs(struct pipe_screen *screen)
 415 {
 416    screen->texture_create = llvmpipe_texture_create;
 417    screen->texture_blanket = llvmpipe_texture_blanket;
 418    screen->texture_destroy = llvmpipe_texture_destroy;
 419
 420    screen->get_tex_surface = llvmpipe_get_tex_surface;
 421    screen->tex_surface_destroy = llvmpipe_tex_surface_destroy;
 422
 423    screen->get_tex_transfer = llvmpipe_get_tex_transfer;
 424    screen->tex_transfer_destroy = llvmpipe_tex_transfer_destroy;
 425    screen->transfer_map = llvmpipe_transfer_map;
 426    screen->transfer_unmap = llvmpipe_transfer_unmap;
 427 }