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_util.h"
  37 #include "pipe/p_winsys.h"
  38
  39 #include "cell_context.h"
  40 #include "cell_state.h"
  41 #include "cell_texture.h"
  42
  43
  44 /* Simple, maximally packed layout.
  45  */
  46
  47 static unsigned minify( unsigned d )
  48 {
  49    return MAX2(1, d>>1);
  50 }
  51
  52
  53 static void
  54 cell_texture_layout(struct cell_texture * spt)
  55 {
  56    struct pipe_texture *pt = &spt->base;
  57    unsigned level;
  58    unsigned width = pt->width[0];
  59    unsigned height = pt->height[0];
  60    unsigned depth = pt->depth[0];
  61
  62    spt->buffer_size = 0;
  63
  64    for ( level = 0 ; level <= pt->last_level ; level++ ) {
  65       pt->width[level] = width;
  66       pt->height[level] = height;
  67       pt->depth[level] = depth;
  68       pt->nblocksx[level] = pf_get_nblocksx(&pt->block, width);
  69       pt->nblocksy[level] = pf_get_nblocksy(&pt->block, height);
  70
  71       spt->level_offset[level] = spt->buffer_size;
  72
  73       spt->buffer_size += (pt->nblocksy[level] *
  74                           ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
  75                           pt->nblocksx[level] * pt->block.size;
  76
  77       width  = minify(width);
  78       height = minify(height);
  79       depth = minify(depth);
  80    }
  81 }
  82
  83
  84 static struct pipe_texture *
  85 cell_texture_create_screen(struct pipe_screen *screen,
  86                            const struct pipe_texture *templat)
  87 {
  88    struct pipe_winsys *ws = screen->winsys;
  89    struct cell_texture *spt = CALLOC_STRUCT(cell_texture);
  90    if (!spt)
  91       return NULL;
  92
  93    spt->base = *templat;
  94    spt->base.refcount = 1;
  95    spt->base.screen = screen;
  96
  97    cell_texture_layout(spt);
  98
  99    spt->buffer = ws->buffer_create(ws, 32,
 100                                    PIPE_BUFFER_USAGE_PIXEL,
 101                                    spt->buffer_size);
 102
 103    if (!spt->buffer) {
 104       FREE(spt);
 105       return NULL;
 106    }
 107
 108    return &spt->base;
 109 }
 110
 111
 112 static void
 113 cell_texture_release_screen(struct pipe_screen *screen,
 114                             struct pipe_texture **pt)
 115 {
 116    if (!*pt)
 117       return;
 118
 119    /*
 120    DBG("%s %p refcount will be %d\n",
 121        __FUNCTION__, (void *) *pt, (*pt)->refcount - 1);
 122    */
 123    if (--(*pt)->refcount <= 0) {
 124       struct cell_texture *spt = cell_texture(*pt);
 125
 126       /*
 127       DBG("%s deleting %p\n", __FUNCTION__, (void *) spt);
 128       */
 129
 130       pipe_buffer_reference(screen->winsys, &spt->buffer, NULL);
 131
 132       FREE(spt);
 133    }
 134    *pt = NULL;
 135 }
 136
 137
 138 static void
 139 cell_texture_update(struct pipe_context *pipe, struct pipe_texture *texture,
 140                     uint face, uint levelsMask)
 141 {
 142    /* XXX TO DO:  re-tile the texture data ... */
 143
 144 }
 145
 146
 147 static struct pipe_surface *
 148 cell_get_tex_surface_screen(struct pipe_screen *screen,
 149                             struct pipe_texture *pt,
 150                             unsigned face, unsigned level, unsigned zslice)
 151 {
 152    struct pipe_winsys *ws = screen->winsys;
 153    struct cell_texture *spt = cell_texture(pt);
 154    struct pipe_surface *ps;
 155
 156    ps = ws->surface_alloc(ws);
 157    if (ps) {
 158       assert(ps->refcount);
 159       assert(ps->winsys);
 160       pipe_buffer_reference(ws, &ps->buffer, spt->buffer);
 161       ps->format = pt->format;
 162       ps->block = pt->block;
 163       ps->width = pt->width[level];
 164       ps->height = pt->height[level];
 165       ps->nblocksx = pt->nblocksx[level];
 166       ps->nblocksy = pt->nblocksy[level];
 167       ps->stride = spt->stride[level];
 168       ps->offset = spt->level_offset[level];
 169
 170       if (pt->target == PIPE_TEXTURE_CUBE || pt->target == PIPE_TEXTURE_3D) {
 171          ps->offset += ((pt->target == PIPE_TEXTURE_CUBE) ? face : zslice) *
 172                        ps->nblocksy *
 173                        ps->stride;
 174       } else {
 175          assert(face == 0);
 176          assert(zslice == 0);
 177       }
 178    }
 179    return ps;
 180 }
 181
 182
 183
 184 static void
 185 tile_copy_data(uint w, uint h, uint tile_size, uint *dst, const uint *src)
 186 {
 187    const uint tile_size2 = tile_size * tile_size;
 188    const uint h_t = h / tile_size, w_t = w / tile_size;
 189
 190    uint it, jt;  /* tile counters */
 191    uint i, j;    /* intra-tile counters */
 192
 193    /* loop over dest tiles */
 194    for (it = 0; it < h_t; it++) {
 195       for (jt = 0; jt < w_t; jt++) {
 196          /* start of dest tile: */
 197          uint *tdst = dst + (it * w_t + jt) * tile_size2;
 198          /* loop over texels in the tile */
 199          for (i = 0; i < tile_size; i++) {
 200             for (j = 0; j < tile_size; j++) {
 201                const uint srci = it * tile_size + i;
 202                const uint srcj = jt * tile_size + j;
 203                *tdst++ = src[srci * w + srcj];
 204             }
 205          }
 206       }
 207    }
 208 }
 209
 210
 211
 212 /**
 213  * Convert linear texture image data to tiled format for SPU usage.
 214  */
 215 static void
 216 cell_tile_texture(struct cell_context *cell,
 217                   struct cell_texture *texture)
 218 {
 219    struct pipe_screen *screen = cell->pipe.screen;
 220    uint face = 0, level = 0, zslice = 0;
 221    struct pipe_surface *surf;
 222    const uint w = texture->base.width[0], h = texture->base.height[0];
 223    const uint *src;
 224
 225    /* temporary restrictions: */
 226    assert(w >= TILE_SIZE);
 227    assert(h >= TILE_SIZE);
 228    assert(w % TILE_SIZE == 0);
 229    assert(h % TILE_SIZE == 0);
 230
 231    surf = screen->get_tex_surface(screen, &texture->base, face, level, zslice);
 232    ASSERT(surf);
 233
 234    src = (const uint *) pipe_surface_map(surf);
 235
 236    if (texture->tiled_data) {
 237       align_free(texture->tiled_data);
 238    }
 239    texture->tiled_data = align_malloc(w * h * 4, 16);
 240
 241    tile_copy_data(w, h, TILE_SIZE, texture->tiled_data, src);
 242
 243    pipe_surface_unmap(surf);
 244
 245    pipe_surface_reference(&surf, NULL);
 246 }
 247
 248
 249
 250 void
 251 cell_update_texture_mapping(struct cell_context *cell)
 252 {
 253    uint face = 0, level = 0, zslice = 0;
 254    uint i;
 255
 256    for (i = 0; i < CELL_MAX_SAMPLERS; i++) {
 257       if (cell->texture[i])
 258          cell_tile_texture(cell, cell->texture[i]);
 259    }
 260
 261 #if 0
 262    if (cell->tex_surf && cell->tex_map) {
 263       pipe_surface_unmap(cell->tex_surf);
 264       cell->tex_map = NULL;
 265    }
 266
 267    /* XXX free old surface */
 268
 269    cell->tex_surf = cell_get_tex_surface(&cell->pipe,
 270                                          &cell->texture[0]->base,
 271                                          face, level, zslice);
 272
 273    cell->tex_map = pipe_surface_map(cell->tex_surf);
 274 #endif
 275 }
 276
 277
 278 void
 279 cell_init_texture_functions(struct cell_context *cell)
 280 {
 281    cell->pipe.texture_update = cell_texture_update;
 282 }
 283
 284 void
 285 cell_init_screen_texture_funcs(struct pipe_screen *screen)
 286 {
 287    screen->texture_create = cell_texture_create_screen;
 288    screen->texture_release = cell_texture_release_screen;
 289    screen->get_tex_surface = cell_get_tex_surface_screen;
 290 }