src/gallium/drivers/r300/r300_texture.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "pipe/p_screen.h"
  24
  25 #include "util/u_format.h"
  26 #include "util/u_math.h"
  27 #include "util/u_memory.h"
  28
  29 #include "r300_context.h"
  30 #include "r300_texture.h"
  31 #include "r300_screen.h"
  32
  33 #include "radeon_winsys.h"
  34
  35 #define TILE_WIDTH 0
  36 #define TILE_HEIGHT 1
  37
  38 static const unsigned microblock_table[5][3][2] = {
  39     /*linear  tiled   square-tiled */
  40     {{32, 1}, {8, 4}, {0, 0}}, /*   8 bits per pixel */
  41     {{16, 1}, {8, 2}, {4, 4}}, /*  16 bits per pixel */
  42     {{ 8, 1}, {4, 2}, {0, 0}}, /*  32 bits per pixel */
  43     {{ 4, 1}, {0, 0}, {2, 2}}, /*  64 bits per pixel */
  44     {{ 2, 1}, {0, 0}, {0, 0}}  /* 128 bits per pixel */
  45 };
  46
  47 static void r300_setup_texture_state(struct r300_screen* screen, struct r300_texture* tex)
  48 {
  49     struct r300_texture_state* state = &tex->state;
  50     struct pipe_texture *pt = &tex->tex;
  51     boolean is_r500 = screen->caps->is_r500;
  52
  53     state->format0 = R300_TX_WIDTH((pt->width0 - 1) & 0x7ff) |
  54                      R300_TX_HEIGHT((pt->height0 - 1) & 0x7ff);
  55
  56     if (tex->is_npot) {
  57         /* rectangles love this */
  58         state->format0 |= R300_TX_PITCH_EN;
  59         state->format2 = (tex->pitch[0] - 1) & 0x1fff;
  60     } else {
  61         /* power of two textures (3D, mipmaps, and no pitch) */
  62         state->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth0) & 0xf);
  63     }
  64
  65     state->format1 = r300_translate_texformat(pt->format);
  66     if (pt->target == PIPE_TEXTURE_CUBE) {
  67         state->format1 |= R300_TX_FORMAT_CUBIC_MAP;
  68     }
  69     if (pt->target == PIPE_TEXTURE_3D) {
  70         state->format1 |= R300_TX_FORMAT_3D;
  71     }
  72
  73     /* large textures on r500 */
  74     if (is_r500)
  75     {
  76         if (pt->width0 > 2048) {
  77             state->format2 |= R500_TXWIDTH_BIT11;
  78         }
  79         if (pt->height0 > 2048) {
  80             state->format2 |= R500_TXHEIGHT_BIT11;
  81         }
  82     }
  83
  84     SCREEN_DBG(screen, DBG_TEX, "r300: Set texture state (%dx%d, %d levels)\n",
  85                pt->width0, pt->height0, pt->last_level);
  86 }
  87
  88 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
  89                                  unsigned zslice, unsigned face)
  90 {
  91     unsigned offset = tex->offset[level];
  92
  93     switch (tex->tex.target) {
  94         case PIPE_TEXTURE_3D:
  95             assert(face == 0);
  96             return offset + zslice * tex->layer_size[level];
  97
  98         case PIPE_TEXTURE_CUBE:
  99             assert(zslice == 0);
 100             return offset + face * tex->layer_size[level];
 101
 102         default:
 103             assert(zslice == 0 && face == 0);
 104             return offset;
 105     }
 106 }
 107
 108 /**
 109  * Return the width (dim==TILE_WIDTH) or height (dim==TILE_HEIGHT) of one tile
 110  * of the given texture.
 111  */
 112 static unsigned r300_texture_get_tile_size(struct r300_texture* tex, int dim)
 113 {
 114     unsigned pixsize, tile_size;
 115
 116     pixsize = util_format_get_blocksize(tex->tex.format);
 117     tile_size = microblock_table[util_logbase2(pixsize)][tex->microtile][dim] *
 118                 (tex->macrotile == R300_BUFFER_TILED ? 8 : 1);
 119
 120     assert(tile_size);
 121     return tile_size;
 122 }
 123
 124 /**
 125  * Return the stride, in bytes, of the texture images of the given texture
 126  * at the given level.
 127  */
 128 unsigned r300_texture_get_stride(struct r300_screen* screen,
 129                                  struct r300_texture* tex, unsigned level)
 130 {
 131     unsigned tile_width, width;
 132
 133     if (tex->stride_override)
 134         return tex->stride_override;
 135
 136     /* Check the level. */
 137     if (level > tex->tex.last_level) {
 138         SCREEN_DBG(screen, DBG_TEX, "%s: level (%u) > last_level (%u)\n",
 139                    __FUNCTION__, level, tex->tex.last_level);
 140         return 0;
 141     }
 142
 143     width = u_minify(tex->tex.width0, level);
 144
 145     if (!util_format_is_compressed(tex->tex.format)) {
 146         tile_width = r300_texture_get_tile_size(tex, TILE_WIDTH);
 147         width = align(width, tile_width);
 148         return util_format_get_stride(tex->tex.format, width);
 149     } else {
 150         return align(util_format_get_stride(tex->tex.format, width), 32);
 151     }
 152 }
 153
 154 static unsigned r300_texture_get_nblocksy(struct r300_texture* tex,
 155                                           unsigned level)
 156 {
 157     unsigned height, tile_height;
 158
 159     height = u_minify(tex->tex.height0, level);
 160
 161     if (!util_format_is_compressed(tex->tex.format)) {
 162         tile_height = r300_texture_get_tile_size(tex, TILE_HEIGHT);
 163         height = align(height, tile_height);
 164     }
 165
 166     return util_format_get_nblocksy(tex->tex.format, height);
 167 }
 168
 169 static void r300_setup_miptree(struct r300_screen* screen,
 170                                struct r300_texture* tex)
 171 {
 172     struct pipe_texture* base = &tex->tex;
 173     unsigned stride, size, layer_size, nblocksy, i;
 174
 175     SCREEN_DBG(screen, DBG_TEX, "r300: Making miptree for texture, format %s\n",
 176                pf_name(base->format));
 177
 178     for (i = 0; i <= base->last_level; i++) {
 179         stride = r300_texture_get_stride(screen, tex, i);
 180         nblocksy = r300_texture_get_nblocksy(tex, i);
 181         layer_size = stride * nblocksy;
 182
 183         if (base->target == PIPE_TEXTURE_CUBE)
 184             size = layer_size * 6;
 185         else
 186             size = layer_size * u_minify(base->depth0, i);
 187
 188         tex->offset[i] = align(tex->size, 32);
 189         tex->size = tex->offset[i] + size;
 190         tex->layer_size[i] = layer_size;
 191         tex->pitch[i] = stride / util_format_get_blocksize(base->format);
 192
 193         SCREEN_DBG(screen, DBG_TEX, "r300: Texture miptree: Level %d "
 194                 "(%dx%dx%d px, pitch %d bytes) %d bytes total\n",
 195                 i, u_minify(base->width0, i), u_minify(base->height0, i),
 196                 u_minify(base->depth0, i), stride, tex->size);
 197     }
 198 }
 199
 200 static void r300_setup_flags(struct r300_texture* tex)
 201 {
 202     tex->is_npot = !util_is_power_of_two(tex->tex.width0) ||
 203                    !util_is_power_of_two(tex->tex.height0);
 204 }
 205
 206 /* Create a new texture. */
 207 static struct pipe_texture*
 208     r300_texture_create(struct pipe_screen* screen,
 209                         const struct pipe_texture* template)
 210 {
 211     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
 212     struct r300_screen* rscreen = r300_screen(screen);
 213     struct radeon_winsys* winsys = (struct radeon_winsys*)screen->winsys;
 214
 215     if (!tex) {
 216         return NULL;
 217     }
 218
 219     tex->tex = *template;
 220     pipe_reference_init(&tex->tex.reference, 1);
 221     tex->tex.screen = screen;
 222
 223     r300_setup_flags(tex);
 224     r300_setup_miptree(rscreen, tex);
 225     r300_setup_texture_state(rscreen, tex);
 226
 227     tex->buffer = screen->buffer_create(screen, 2048,
 228                                         PIPE_BUFFER_USAGE_PIXEL,
 229                                         tex->size);
 230     winsys->buffer_set_tiling(winsys, tex->buffer,
 231                               tex->pitch[0],
 232                               tex->microtile != R300_BUFFER_LINEAR,
 233                               tex->macrotile != R300_BUFFER_LINEAR);
 234
 235     if (!tex->buffer) {
 236         FREE(tex);
 237         return NULL;
 238     }
 239
 240     return (struct pipe_texture*)tex;
 241 }
 242
 243 static void r300_texture_destroy(struct pipe_texture* texture)
 244 {
 245     struct r300_texture* tex = (struct r300_texture*)texture;
 246
 247     pipe_buffer_reference(&tex->buffer, NULL);
 248
 249     FREE(tex);
 250 }
 251
 252 static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 253                                                  struct pipe_texture* texture,
 254                                                  unsigned face,
 255                                                  unsigned level,
 256                                                  unsigned zslice,
 257                                                  unsigned flags)
 258 {
 259     struct r300_texture* tex = (struct r300_texture*)texture;
 260     struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
 261     unsigned offset;
 262
 263     offset = r300_texture_get_offset(tex, level, zslice, face);
 264
 265     if (surface) {
 266         pipe_reference_init(&surface->reference, 1);
 267         pipe_texture_reference(&surface->texture, texture);
 268         surface->format = texture->format;
 269         surface->width = u_minify(texture->width0, level);
 270         surface->height = u_minify(texture->height0, level);
 271         surface->offset = offset;
 272         surface->usage = flags;
 273         surface->zslice = zslice;
 274         surface->texture = texture;
 275         surface->face = face;
 276         surface->level = level;
 277     }
 278
 279     return surface;
 280 }
 281
 282 static void r300_tex_surface_destroy(struct pipe_surface* s)
 283 {
 284     pipe_texture_reference(&s->texture, NULL);
 285     FREE(s);
 286 }
 287
 288 static struct pipe_texture*
 289     r300_texture_blanket(struct pipe_screen* screen,
 290                          const struct pipe_texture* base,
 291                          const unsigned* stride,
 292                          struct pipe_buffer* buffer)
 293 {
 294     struct r300_texture* tex;
 295     struct r300_screen* rscreen = r300_screen(screen);
 296
 297     /* Support only 2D textures without mipmaps */
 298     if (base->target != PIPE_TEXTURE_2D ||
 299         base->depth0 != 1 ||
 300         base->last_level != 0) {
 301         return NULL;
 302     }
 303
 304     tex = CALLOC_STRUCT(r300_texture);
 305     if (!tex) {
 306         return NULL;
 307     }
 308
 309     tex->tex = *base;
 310     pipe_reference_init(&tex->tex.reference, 1);
 311     tex->tex.screen = screen;
 312
 313     tex->stride_override = *stride;
 314     tex->pitch[0] = *stride / util_format_get_blocksize(base->format);
 315
 316     r300_setup_flags(tex);
 317     r300_setup_texture_state(rscreen, tex);
 318
 319     pipe_buffer_reference(&tex->buffer, buffer);
 320
 321     return (struct pipe_texture*)tex;
 322 }
 323
 324 static struct pipe_video_surface *
 325 r300_video_surface_create(struct pipe_screen *screen,
 326                           enum pipe_video_chroma_format chroma_format,
 327                           unsigned width, unsigned height)
 328 {
 329     struct r300_video_surface *r300_vsfc;
 330     struct pipe_texture template;
 331
 332     assert(screen);
 333     assert(width && height);
 334
 335     r300_vsfc = CALLOC_STRUCT(r300_video_surface);
 336     if (!r300_vsfc)
 337        return NULL;
 338
 339     pipe_reference_init(&r300_vsfc->base.reference, 1);
 340     r300_vsfc->base.screen = screen;
 341     r300_vsfc->base.chroma_format = chroma_format;
 342     r300_vsfc->base.width = width;
 343     r300_vsfc->base.height = height;
 344
 345     memset(&template, 0, sizeof(struct pipe_texture));
 346     template.target = PIPE_TEXTURE_2D;
 347     template.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 348     template.last_level = 0;
 349     template.width0 = util_next_power_of_two(width);
 350     template.height0 = util_next_power_of_two(height);
 351     template.depth0 = 1;
 352     template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER |
 353                          PIPE_TEXTURE_USAGE_RENDER_TARGET;
 354
 355     r300_vsfc->tex = screen->texture_create(screen, &template);
 356     if (!r300_vsfc->tex)
 357     {
 358         FREE(r300_vsfc);
 359         return NULL;
 360     }
 361
 362     return &r300_vsfc->base;
 363 }
 364
 365 static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
 366 {
 367     struct r300_video_surface *r300_vsfc = r300_video_surface(vsfc);
 368     pipe_texture_reference(&r300_vsfc->tex, NULL);
 369     FREE(r300_vsfc);
 370 }
 371
 372 void r300_init_screen_texture_functions(struct pipe_screen* screen)
 373 {
 374     screen->texture_create = r300_texture_create;
 375     screen->texture_destroy = r300_texture_destroy;
 376     screen->get_tex_surface = r300_get_tex_surface;
 377     screen->tex_surface_destroy = r300_tex_surface_destroy;
 378     screen->texture_blanket = r300_texture_blanket;
 379
 380     screen->video_surface_create = r300_video_surface_create;
 381     screen->video_surface_destroy= r300_video_surface_destroy;
 382 }
 383
 384 boolean r300_get_texture_buffer(struct pipe_screen* screen,
 385                                 struct pipe_texture* texture,
 386                                 struct pipe_buffer** buffer,
 387                                 unsigned* stride)
 388 {
 389     struct r300_texture* tex = (struct r300_texture*)texture;
 390     if (!tex) {
 391         return FALSE;
 392     }
 393
 394     pipe_buffer_reference(buffer, tex->buffer);
 395
 396     if (stride) {
 397         *stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
 398     }
 399
 400     return TRUE;
 401 }