src/gallium/drivers/cell/ppu/cell_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/p_winsys.h"
  37 #include "util/u_math.h"
  38 #include "util/u_memory.h"
  39
  40 #include "cell_context.h"
  41 #include "cell_state.h"
  42 #include "cell_texture.h"
  43
  44
  45 /* Simple, maximally packed layout.
  46  */
  47
  48 static unsigned minify( unsigned d )
  49 {
  50    return MAX2(1, d>>1);
  51 }
  52
  53
  54 static void
  55 cell_texture_layout(struct cell_texture * spt)
  56 {
  57    struct pipe_texture *pt = &spt->base;
  58    unsigned level;
  59    unsigned width = pt->width[0];
  60    unsigned height = pt->height[0];
  61    unsigned depth = pt->depth[0];
  62
  63    spt->buffer_size = 0;
  64
  65    for ( level = 0 ; level <= pt->last_level ; level++ ) {
  66       unsigned size;
  67       unsigned w_tile, h_tile;
  68
  69       /* width, height, rounded up to tile size */
  70       w_tile = align(width, TILE_SIZE);
  71       h_tile = align(height, TILE_SIZE);
  72
  73       pt->width[level] = width;
  74       pt->height[level] = height;
  75       pt->depth[level] = depth;
  76       pt->nblocksx[level] = pf_get_nblocksx(&pt->block, w_tile);
  77       pt->nblocksy[level] = pf_get_nblocksy(&pt->block, h_tile);
  78
  79       spt->stride[level] = pt->nblocksx[level] * pt->block.size;
  80
  81       spt->level_offset[level] = spt->buffer_size;
  82
  83       size = pt->nblocksx[level] * pt->nblocksy[level] * pt->block.size;
  84       if (pt->target == PIPE_TEXTURE_CUBE)
  85          size *= 6;
  86       else
  87          size *= depth;
  88
  89       spt->buffer_size += size;
  90
  91       width  = minify(width);
  92       height = minify(height);
  93       depth = minify(depth);
  94    }
  95 }
  96
  97
  98 static struct pipe_texture *
  99 cell_texture_create(struct pipe_screen *screen,
 100                     const struct pipe_texture *templat)
 101 {
 102    struct pipe_winsys *ws = screen->winsys;
 103    struct cell_texture *spt = CALLOC_STRUCT(cell_texture);
 104    if (!spt)
 105       return NULL;
 106
 107    spt->base = *templat;
 108    spt->base.refcount = 1;
 109    spt->base.screen = screen;
 110
 111    cell_texture_layout(spt);
 112
 113    spt->buffer = ws->buffer_create(ws, 32,
 114                                    PIPE_BUFFER_USAGE_PIXEL,
 115                                    spt->buffer_size);
 116
 117    if (!spt->buffer) {
 118       FREE(spt);
 119       return NULL;
 120    }
 121
 122    return &spt->base;
 123 }
 124
 125
 126 static void
 127 cell_texture_release(struct pipe_screen *screen,
 128                      struct pipe_texture **pt)
 129 {
 130    if (!*pt)
 131       return;
 132
 133    /*
 134    DBG("%s %p refcount will be %d\n",
 135        __FUNCTION__, (void *) *pt, (*pt)->refcount - 1);
 136    */
 137    if (--(*pt)->refcount <= 0) {
 138       struct cell_texture *spt = cell_texture(*pt);
 139
 140       /*
 141       DBG("%s deleting %p\n", __FUNCTION__, (void *) spt);
 142       */
 143
 144       pipe_buffer_reference(screen, &spt->buffer, NULL);
 145
 146       FREE(spt);
 147    }
 148    *pt = NULL;
 149 }
 150
 151
 152 #if 0
 153 static void
 154 cell_texture_update(struct pipe_context *pipe, struct pipe_texture *texture,
 155                     uint face, uint levelsMask)
 156 {
 157    /* XXX TO DO:  re-tile the texture data ... */
 158
 159 }
 160 #endif
 161
 162
 163 static struct pipe_surface *
 164 cell_get_tex_surface(struct pipe_screen *screen,
 165                      struct pipe_texture *pt,
 166                      unsigned face, unsigned level, unsigned zslice,
 167                      unsigned usage)
 168 {
 169    struct pipe_winsys *ws = screen->winsys;
 170    struct cell_texture *spt = cell_texture(pt);
 171    struct pipe_surface *ps;
 172
 173    ps = ws->surface_alloc(ws);
 174    if (ps) {
 175       assert(ps->refcount);
 176       assert(ps->winsys);
 177       winsys_buffer_reference(ws, &ps->buffer, spt->buffer);
 178       ps->format = pt->format;
 179       ps->block = pt->block;
 180       ps->width = pt->width[level];
 181       ps->height = pt->height[level];
 182       ps->nblocksx = pt->nblocksx[level];
 183       ps->nblocksy = pt->nblocksy[level];
 184       ps->stride = spt->stride[level];
 185       ps->offset = spt->level_offset[level];
 186       ps->usage = usage;
 187
 188       /* XXX may need to override usage flags (see sp_texture.c) */
 189
 190       pipe_texture_reference(&ps->texture, pt);
 191       ps->face = face;
 192       ps->level = level;
 193       ps->zslice = zslice;
 194
 195       if (pt->target == PIPE_TEXTURE_CUBE || pt->target == PIPE_TEXTURE_3D) {
 196          ps->offset += ((pt->target == PIPE_TEXTURE_CUBE) ? face : zslice) *
 197                        ps->nblocksy *
 198                        ps->stride;
 199       }
 200       else {
 201          assert(face == 0);
 202          assert(zslice == 0);
 203       }
 204    }
 205    return ps;
 206 }
 207
 208
 209
 210 /**
 211  * Copy tile data from linear layout to tiled layout.
 212  * XXX this should be rolled into the future surface-creation code.
 213  * XXX also need "untile" code...
 214  */
 215 static void
 216 tile_copy_data(uint w, uint h, uint tile_size, uint *dst, const uint *src)
 217 {
 218    const uint tile_size2 = tile_size * tile_size;
 219    const uint h_t = h / tile_size, w_t = w / tile_size;
 220
 221    uint it, jt;  /* tile counters */
 222    uint i, j;    /* intra-tile counters */
 223
 224    /* loop over dest tiles */
 225    for (it = 0; it < h_t; it++) {
 226       for (jt = 0; jt < w_t; jt++) {
 227          /* start of dest tile: */
 228          uint *tdst = dst + (it * w_t + jt) * tile_size2;
 229          /* loop over texels in the tile */
 230          for (i = 0; i < tile_size; i++) {
 231             for (j = 0; j < tile_size; j++) {
 232                const uint srci = it * tile_size + i;
 233                const uint srcj = jt * tile_size + j;
 234                *tdst++ = src[srci * w + srcj];
 235             }
 236          }
 237       }
 238    }
 239 }
 240
 241
 242
 243 /**
 244  * Convert linear texture image data to tiled format for SPU usage.
 245  * XXX recast this in terms of pipe_surfaces (aka texture views).
 246  */
 247 static void
 248 cell_tile_texture(struct cell_context *cell,
 249                   struct cell_texture *texture)
 250 {
 251    struct pipe_screen *screen = cell->pipe.screen;
 252    uint face = 0, level = 0, zslice = 0;
 253    struct pipe_surface *surf;
 254    const uint w = texture->base.width[0], h = texture->base.height[0];
 255    const uint *src;
 256
 257    /* temporary restrictions: */
 258    assert(w >= TILE_SIZE);
 259    assert(h >= TILE_SIZE);
 260    assert(w % TILE_SIZE == 0);
 261    assert(h % TILE_SIZE == 0);
 262
 263    surf = screen->get_tex_surface(screen, &texture->base, face, level, zslice,
 264                                   PIPE_BUFFER_USAGE_CPU_WRITE);
 265    ASSERT(surf);
 266
 267    src = (const uint *) pipe_surface_map(surf, PIPE_BUFFER_USAGE_CPU_WRITE);
 268
 269    if (texture->tiled_data) {
 270       align_free(texture->tiled_data);
 271    }
 272    texture->tiled_data = align_malloc(w * h * 4, 16);
 273
 274    tile_copy_data(w, h, TILE_SIZE, texture->tiled_data, src);
 275
 276    pipe_surface_unmap(surf);
 277
 278    pipe_surface_reference(&surf, NULL);
 279 }
 280
 281
 282 void
 283 cell_update_texture_mapping(struct cell_context *cell)
 284 {
 285 #if 0
 286    uint face = 0, level = 0, zslice = 0;
 287 #endif
 288    uint i;
 289
 290    for (i = 0; i < CELL_MAX_SAMPLERS; i++) {
 291       if (cell->texture[i])
 292          cell_tile_texture(cell, cell->texture[i]);
 293    }
 294
 295 #if 0
 296    if (cell->tex_surf && cell->tex_map) {
 297       pipe_surface_unmap(cell->tex_surf);
 298       cell->tex_map = NULL;
 299    }
 300
 301    /* XXX free old surface */
 302
 303    cell->tex_surf = cell_get_tex_surface(&cell->pipe,
 304                                          &cell->texture[0]->base,
 305                                          face, level, zslice);
 306
 307    cell->tex_map = pipe_surface_map(cell->tex_surf);
 308 #endif
 309 }
 310
 311
 312 static void
 313 cell_tex_surface_release(struct pipe_screen *screen,
 314                          struct pipe_surface **s)
 315 {
 316    /* Effectively do the texture_update work here - if texture images
 317     * needed post-processing to put them into hardware layout, this is
 318     * where it would happen.  For softpipe, nothing to do.
 319     */
 320    assert ((*s)->texture);
 321    pipe_texture_reference(&(*s)->texture, NULL);
 322
 323    screen->winsys->surface_release(screen->winsys, s);
 324 }
 325
 326
 327 static void *
 328 cell_surface_map( struct pipe_screen *screen,
 329                   struct pipe_surface *surface,
 330                   unsigned flags )
 331 {
 332    ubyte *map;
 333
 334    if (flags & ~surface->usage) {
 335       assert(0);
 336       return NULL;
 337    }
 338
 339    map = pipe_buffer_map( screen, surface->buffer, flags );
 340    if (map == NULL)
 341       return NULL;
 342
 343    /* May want to different things here depending on read/write nature
 344     * of the map:
 345     */
 346    if (surface->texture &&
 347        (flags & PIPE_BUFFER_USAGE_CPU_WRITE))
 348    {
 349       /* Do something to notify sharing contexts of a texture change.
 350        * In softpipe, that would mean flushing the texture cache.
 351        */
 352 #if 0
 353       cell_screen(screen)->timestamp++;
 354 #endif
 355    }
 356
 357    return map + surface->offset;
 358 }
 359
 360
 361 static void
 362 cell_surface_unmap(struct pipe_screen *screen,
 363                    struct pipe_surface *surface)
 364 {
 365    pipe_buffer_unmap( screen, surface->buffer );
 366 }
 367
 368
 369 void
 370 cell_init_texture_functions(struct cell_context *cell)
 371 {
 372    /*cell->pipe.texture_update = cell_texture_update;*/
 373 }
 374
 375
 376 void
 377 cell_init_screen_texture_funcs(struct pipe_screen *screen)
 378 {
 379    screen->texture_create = cell_texture_create;
 380    screen->texture_release = cell_texture_release;
 381
 382    screen->get_tex_surface = cell_get_tex_surface;
 383    screen->tex_surface_release = cell_tex_surface_release;
 384
 385    screen->surface_map = cell_surface_map;
 386    screen->surface_unmap = cell_surface_unmap;
 387 }