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 void r300_texture_reinterpret_format(struct pipe_screen *screen,
  89                                      struct pipe_texture *tex,
  90                                      enum pipe_format new_format)
  91 {
  92     struct r300_screen *r300screen = r300_screen(screen);
  93
  94     SCREEN_DBG(r300screen, DBG_TEX, "r300: Reinterpreting format: %s -> %s\n",
  95                util_format_name(tex->format), util_format_name(new_format));
  96
  97     tex->format = new_format;
  98
  99     r300_setup_texture_state(r300_screen(screen), (struct r300_texture*)tex);
 100 }
 101
 102 unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
 103                                  unsigned zslice, unsigned face)
 104 {
 105     unsigned offset = tex->offset[level];
 106
 107     switch (tex->tex.target) {
 108         case PIPE_TEXTURE_3D:
 109             assert(face == 0);
 110             return offset + zslice * tex->layer_size[level];
 111
 112         case PIPE_TEXTURE_CUBE:
 113             assert(zslice == 0);
 114             return offset + face * tex->layer_size[level];
 115
 116         default:
 117             assert(zslice == 0 && face == 0);
 118             return offset;
 119     }
 120 }
 121
 122 /**
 123  * Return the width (dim==TILE_WIDTH) or height (dim==TILE_HEIGHT) of one tile
 124  * of the given texture.
 125  */
 126 static unsigned r300_texture_get_tile_size(struct r300_texture* tex, int dim)
 127 {
 128     unsigned pixsize, tile_size;
 129
 130     pixsize = util_format_get_blocksize(tex->tex.format);
 131     tile_size = microblock_table[util_logbase2(pixsize)][tex->microtile][dim] *
 132                 (tex->macrotile == R300_BUFFER_TILED ? 8 : 1);
 133
 134     assert(tile_size);
 135     return tile_size;
 136 }
 137
 138 /**
 139  * Return the stride, in bytes, of the texture images of the given texture
 140  * at the given level.
 141  */
 142 unsigned r300_texture_get_stride(struct r300_screen* screen,
 143                                  struct r300_texture* tex, unsigned level)
 144 {
 145     unsigned tile_width, width;
 146
 147     if (tex->stride_override)
 148         return tex->stride_override;
 149
 150     /* Check the level. */
 151     if (level > tex->tex.last_level) {
 152         SCREEN_DBG(screen, DBG_TEX, "%s: level (%u) > last_level (%u)\n",
 153                    __FUNCTION__, level, tex->tex.last_level);
 154         return 0;
 155     }
 156
 157     width = u_minify(tex->tex.width0, level);
 158
 159     if (!util_format_is_compressed(tex->tex.format)) {
 160         tile_width = r300_texture_get_tile_size(tex, TILE_WIDTH);
 161         width = align(width, tile_width);
 162         return util_format_get_stride(tex->tex.format, width);
 163     } else {
 164         return align(util_format_get_stride(tex->tex.format, width), 32);
 165     }
 166 }
 167
 168 static unsigned r300_texture_get_nblocksy(struct r300_texture* tex,
 169                                           unsigned level)
 170 {
 171     unsigned height, tile_height;
 172
 173     height = u_minify(tex->tex.height0, level);
 174
 175     if (!util_format_is_compressed(tex->tex.format)) {
 176         tile_height = r300_texture_get_tile_size(tex, TILE_HEIGHT);
 177         height = align(height, tile_height);
 178     }
 179
 180     return util_format_get_nblocksy(tex->tex.format, height);
 181 }
 182
 183 static void r300_setup_miptree(struct r300_screen* screen,
 184                                struct r300_texture* tex)
 185 {
 186     struct pipe_texture* base = &tex->tex;
 187     unsigned stride, size, layer_size, nblocksy, i;
 188
 189     SCREEN_DBG(screen, DBG_TEX, "r300: Making miptree for texture, format %s\n",
 190                util_format_name(base->format));
 191
 192     for (i = 0; i <= base->last_level; i++) {
 193         stride = r300_texture_get_stride(screen, tex, i);
 194         nblocksy = r300_texture_get_nblocksy(tex, i);
 195         layer_size = stride * nblocksy;
 196
 197         if (base->target == PIPE_TEXTURE_CUBE)
 198             size = layer_size * 6;
 199         else
 200             size = layer_size * u_minify(base->depth0, i);
 201
 202         tex->offset[i] = align(tex->size, 32);
 203         tex->size = tex->offset[i] + size;
 204         tex->layer_size[i] = layer_size;
 205         tex->pitch[i] = stride / util_format_get_blocksize(base->format);
 206
 207         SCREEN_DBG(screen, DBG_TEX, "r300: Texture miptree: Level %d "
 208                 "(%dx%dx%d px, pitch %d bytes) %d bytes total\n",
 209                 i, u_minify(base->width0, i), u_minify(base->height0, i),
 210                 u_minify(base->depth0, i), stride, tex->size);
 211     }
 212 }
 213
 214 static void r300_setup_flags(struct r300_texture* tex)
 215 {
 216     tex->is_npot = !util_is_power_of_two(tex->tex.width0) ||
 217                    !util_is_power_of_two(tex->tex.height0);
 218 }
 219
 220 /* Create a new texture. */
 221 static struct pipe_texture*
 222     r300_texture_create(struct pipe_screen* screen,
 223                         const struct pipe_texture* template)
 224 {
 225     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
 226     struct r300_screen* rscreen = r300_screen(screen);
 227     struct radeon_winsys* winsys = (struct radeon_winsys*)screen->winsys;
 228
 229     if (!tex) {
 230         return NULL;
 231     }
 232
 233     tex->tex = *template;
 234     pipe_reference_init(&tex->tex.reference, 1);
 235     tex->tex.screen = screen;
 236
 237     r300_setup_flags(tex);
 238     r300_setup_miptree(rscreen, tex);
 239     r300_setup_texture_state(rscreen, tex);
 240
 241     tex->buffer = screen->buffer_create(screen, 2048,
 242                                         PIPE_BUFFER_USAGE_PIXEL,
 243                                         tex->size);
 244     winsys->buffer_set_tiling(winsys, tex->buffer,
 245                               tex->pitch[0],
 246                               tex->microtile != R300_BUFFER_LINEAR,
 247                               tex->macrotile != R300_BUFFER_LINEAR);
 248
 249     if (!tex->buffer) {
 250         FREE(tex);
 251         return NULL;
 252     }
 253
 254     return (struct pipe_texture*)tex;
 255 }
 256
 257 static void r300_texture_destroy(struct pipe_texture* texture)
 258 {
 259     struct r300_texture* tex = (struct r300_texture*)texture;
 260
 261     pipe_buffer_reference(&tex->buffer, NULL);
 262
 263     FREE(tex);
 264 }
 265
 266 static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
 267                                                  struct pipe_texture* texture,
 268                                                  unsigned face,
 269                                                  unsigned level,
 270                                                  unsigned zslice,
 271                                                  unsigned flags)
 272 {
 273     struct r300_texture* tex = (struct r300_texture*)texture;
 274     struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
 275     unsigned offset;
 276
 277     offset = r300_texture_get_offset(tex, level, zslice, face);
 278
 279     if (surface) {
 280         pipe_reference_init(&surface->reference, 1);
 281         pipe_texture_reference(&surface->texture, texture);
 282         surface->format = texture->format;
 283         surface->width = u_minify(texture->width0, level);
 284         surface->height = u_minify(texture->height0, level);
 285         surface->offset = offset;
 286         surface->usage = flags;
 287         surface->zslice = zslice;
 288         surface->texture = texture;
 289         surface->face = face;
 290         surface->level = level;
 291     }
 292
 293     return surface;
 294 }
 295
 296 static void r300_tex_surface_destroy(struct pipe_surface* s)
 297 {
 298     pipe_texture_reference(&s->texture, NULL);
 299     FREE(s);
 300 }
 301
 302 static struct pipe_texture*
 303     r300_texture_blanket(struct pipe_screen* screen,
 304                          const struct pipe_texture* base,
 305                          const unsigned* stride,
 306                          struct pipe_buffer* buffer)
 307 {
 308     struct r300_texture* tex;
 309     struct r300_screen* rscreen = r300_screen(screen);
 310
 311     /* Support only 2D textures without mipmaps */
 312     if (base->target != PIPE_TEXTURE_2D ||
 313         base->depth0 != 1 ||
 314         base->last_level != 0) {
 315         return NULL;
 316     }
 317
 318     tex = CALLOC_STRUCT(r300_texture);
 319     if (!tex) {
 320         return NULL;
 321     }
 322
 323     tex->tex = *base;
 324     pipe_reference_init(&tex->tex.reference, 1);
 325     tex->tex.screen = screen;
 326
 327     tex->stride_override = *stride;
 328     tex->pitch[0] = *stride / util_format_get_blocksize(base->format);
 329
 330     r300_setup_flags(tex);
 331     r300_setup_texture_state(rscreen, tex);
 332
 333     pipe_buffer_reference(&tex->buffer, buffer);
 334
 335     return (struct pipe_texture*)tex;
 336 }
 337
 338 static struct pipe_video_surface *
 339 r300_video_surface_create(struct pipe_screen *screen,
 340                           enum pipe_video_chroma_format chroma_format,
 341                           unsigned width, unsigned height)
 342 {
 343     struct r300_video_surface *r300_vsfc;
 344     struct pipe_texture template;
 345
 346     assert(screen);
 347     assert(width && height);
 348
 349     r300_vsfc = CALLOC_STRUCT(r300_video_surface);
 350     if (!r300_vsfc)
 351        return NULL;
 352
 353     pipe_reference_init(&r300_vsfc->base.reference, 1);
 354     r300_vsfc->base.screen = screen;
 355     r300_vsfc->base.chroma_format = chroma_format;
 356     r300_vsfc->base.width = width;
 357     r300_vsfc->base.height = height;
 358
 359     memset(&template, 0, sizeof(struct pipe_texture));
 360     template.target = PIPE_TEXTURE_2D;
 361     template.format = PIPE_FORMAT_X8R8G8B8_UNORM;
 362     template.last_level = 0;
 363     template.width0 = util_next_power_of_two(width);
 364     template.height0 = util_next_power_of_two(height);
 365     template.depth0 = 1;
 366     template.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER |
 367                          PIPE_TEXTURE_USAGE_RENDER_TARGET;
 368
 369     r300_vsfc->tex = screen->texture_create(screen, &template);
 370     if (!r300_vsfc->tex)
 371     {
 372         FREE(r300_vsfc);
 373         return NULL;
 374     }
 375
 376     return &r300_vsfc->base;
 377 }
 378
 379 static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
 380 {
 381     struct r300_video_surface *r300_vsfc = r300_video_surface(vsfc);
 382     pipe_texture_reference(&r300_vsfc->tex, NULL);
 383     FREE(r300_vsfc);
 384 }
 385
 386 void r300_init_screen_texture_functions(struct pipe_screen* screen)
 387 {
 388     screen->texture_create = r300_texture_create;
 389     screen->texture_destroy = r300_texture_destroy;
 390     screen->get_tex_surface = r300_get_tex_surface;
 391     screen->tex_surface_destroy = r300_tex_surface_destroy;
 392     screen->texture_blanket = r300_texture_blanket;
 393
 394     screen->video_surface_create = r300_video_surface_create;
 395     screen->video_surface_destroy= r300_video_surface_destroy;
 396 }
 397
 398 boolean r300_get_texture_buffer(struct pipe_screen* screen,
 399                                 struct pipe_texture* texture,
 400                                 struct pipe_buffer** buffer,
 401                                 unsigned* stride)
 402 {
 403     struct r300_texture* tex = (struct r300_texture*)texture;
 404     if (!tex) {
 405         return FALSE;
 406     }
 407
 408     pipe_buffer_reference(buffer, tex->buffer);
 409
 410     if (stride) {
 411         *stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
 412     }
 413
 414     return TRUE;
 415 }