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