src/gallium/drivers/r300/r300_screen.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  * Copyright 2010 Marek Olšák <maraeo@gmail.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  23
  24 #include "util/u_format.h"
  25 #include "util/u_format_s3tc.h"
  26 #include "util/u_memory.h"
  27 #include "os/os_time.h"
  28 #include "vl/vl_video_buffer.h"
  29
  30 #include "r300_context.h"
  31 #include "r300_texture.h"
  32 #include "r300_screen_buffer.h"
  33 #include "r300_state_inlines.h"
  34 #include "r300_public.h"
  35
  36 #include "draw/draw_context.h"
  37
  38 /* Return the identifier behind whom the brave coders responsible for this
  39  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  40  *
  41  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  42  *
  43  * (Or egotistical. Yet.) */
  44 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  45 {
  46     return "X.Org R300 Project";
  47 }
  48
  49 static const char* chip_families[] = {
  50     "ATI R300",
  51     "ATI R350",
  52     "ATI RV350",
  53     "ATI RV370",
  54     "ATI RV380",
  55     "ATI RS400",
  56     "ATI RC410",
  57     "ATI RS480",
  58     "ATI R420",
  59     "ATI R423",
  60     "ATI R430",
  61     "ATI R480",
  62     "ATI R481",
  63     "ATI RV410",
  64     "ATI RS600",
  65     "ATI RS690",
  66     "ATI RS740",
  67     "ATI RV515",
  68     "ATI R520",
  69     "ATI RV530",
  70     "ATI R580",
  71     "ATI RV560",
  72     "ATI RV570"
  73 };
  74
  75 static const char* r300_get_name(struct pipe_screen* pscreen)
  76 {
  77     struct r300_screen* r300screen = r300_screen(pscreen);
  78
  79     return chip_families[r300screen->caps.family];
  80 }
  81
  82 static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
  83 {
  84     struct r300_screen* r300screen = r300_screen(pscreen);
  85     boolean is_r500 = r300screen->caps.is_r500;
  86
  87     switch (param) {
  88         /* Supported features (boolean caps). */
  89         case PIPE_CAP_NPOT_TEXTURES:
  90         case PIPE_CAP_TWO_SIDED_STENCIL:
  91         case PIPE_CAP_GLSL:
  92             /* I'll be frank. This is a lie.
  93              *
  94              * We don't truly support GLSL on any of this driver's chipsets.
  95              * To be fair, no chipset supports the full GLSL specification
  96              * to the best of our knowledge, but some of the less esoteric
  97              * features are still missing here.
  98              *
  99              * Rather than cripple ourselves intentionally, I'm going to set
 100              * this flag, and as Gallium's interface continues to change, I
 101              * hope that this single monolithic GLSL enable can slowly get
 102              * split down into many different pieces and the state tracker
 103              * will handle fallbacks transparently, like it should.
 104              *
 105              * ~ C.
 106              */
 107         case PIPE_CAP_ANISOTROPIC_FILTER:
 108         case PIPE_CAP_POINT_SPRITE:
 109         case PIPE_CAP_OCCLUSION_QUERY:
 110         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 111         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 112         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 113         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 114         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 115         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 116         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 117             return 1;
 118
 119         /* r300 cannot do swizzling of compressed textures. Supported otherwise. */
 120         case PIPE_CAP_TEXTURE_SWIZZLE:
 121             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 122
 123         /* Supported on r500 only. */
 124         case PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL:
 125         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 126         case PIPE_CAP_SM3:
 127             return is_r500 ? 1 : 0;
 128
 129         /* Unsupported features. */
 130         case PIPE_CAP_TIMER_QUERY:
 131         case PIPE_CAP_DUAL_SOURCE_BLEND:
 132         case PIPE_CAP_INDEP_BLEND_ENABLE:
 133         case PIPE_CAP_INDEP_BLEND_FUNC:
 134         case PIPE_CAP_DEPTH_CLAMP:
 135         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 136         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 137         case PIPE_CAP_ARRAY_TEXTURES:
 138         case PIPE_CAP_TGSI_INSTANCEID:
 139         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 140         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 141         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 142         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 143         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 144             return 0;
 145
 146         /* SWTCL-only features. */
 147         case PIPE_CAP_STREAM_OUTPUT:
 148         case PIPE_CAP_PRIMITIVE_RESTART:
 149             return !r300screen->caps.has_tcl;
 150
 151         /* Texturing. */
 152         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 153         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 154             return r300screen->caps.num_tex_units;
 155         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 156         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 157         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 158             /* 13 == 4096, 12 == 2048 */
 159             return is_r500 ? 13 : 12;
 160
 161         /* Render targets. */
 162         case PIPE_CAP_MAX_RENDER_TARGETS:
 163             return 4;
 164
 165         default:
 166             debug_printf("r300: Warning: Unknown CAP %d in get_param.\n",
 167                          param);
 168             return 0;
 169     }
 170 }
 171
 172 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 173 {
 174    struct r300_screen* r300screen = r300_screen(pscreen);
 175    boolean is_r400 = r300screen->caps.is_r400;
 176    boolean is_r500 = r300screen->caps.is_r500;
 177
 178    switch (shader)
 179     {
 180     case PIPE_SHADER_FRAGMENT:
 181         switch (param)
 182         {
 183         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 184             return is_r500 || is_r400 ? 512 : 96;
 185         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 186             return is_r500 || is_r400 ? 512 : 64;
 187         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 188             return is_r500 || is_r400 ? 512 : 32;
 189         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 190             return is_r500 ? 511 : 4;
 191         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 192             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 193             /* Fragment shader limits. */
 194         case PIPE_SHADER_CAP_MAX_INPUTS:
 195             /* 2 colors + 8 texcoords are always supported
 196              * (minus fog and wpos).
 197              *
 198              * R500 has the ability to turn 3rd and 4th color into
 199              * additional texcoords but there is no two-sided color
 200              * selection then. However the facing bit can be used instead. */
 201             return 10;
 202         case PIPE_SHADER_CAP_MAX_CONSTS:
 203             return is_r500 ? 256 : 32;
 204         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 205             return 1;
 206         case PIPE_SHADER_CAP_MAX_TEMPS:
 207             return is_r500 ? 128 : is_r400 ? 64 : 32;
 208         case PIPE_SHADER_CAP_MAX_ADDRS:
 209             return 0;
 210         case PIPE_SHADER_CAP_MAX_PREDS:
 211             return is_r500 ? 1 : 0;
 212         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 213             return 0;
 214         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 215         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 216         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 217         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 218             return 0;
 219         case PIPE_SHADER_CAP_SUBROUTINES:
 220             return 0;
 221         }
 222         break;
 223     case PIPE_SHADER_VERTEX:
 224         if (!r300screen->caps.has_tcl) {
 225             return draw_get_shader_param(shader, param);
 226         }
 227
 228         switch (param)
 229         {
 230         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 231         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 232             return is_r500 ? 1024 : 256;
 233         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 234         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 235             return 0;
 236         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 237             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 238         case PIPE_SHADER_CAP_MAX_INPUTS:
 239             return 16;
 240         case PIPE_SHADER_CAP_MAX_CONSTS:
 241             return 256;
 242         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 243             return 1;
 244         case PIPE_SHADER_CAP_MAX_TEMPS:
 245             return 32;
 246         case PIPE_SHADER_CAP_MAX_ADDRS:
 247             return 1; /* XXX guessed */
 248         case PIPE_SHADER_CAP_MAX_PREDS:
 249             return is_r500 ? 4 : 0; /* XXX guessed. */
 250         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 251             return 0;
 252         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 253         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 254         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 255             return 0;
 256         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 257             return 1;
 258         case PIPE_SHADER_CAP_SUBROUTINES:
 259             return 0;
 260         default:
 261             break;
 262         }
 263         break;
 264     default:
 265         break;
 266     }
 267     return 0;
 268 }
 269
 270 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 271 {
 272     struct r300_screen* r300screen = r300_screen(pscreen);
 273
 274     switch (param) {
 275         case PIPE_CAP_MAX_LINE_WIDTH:
 276         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 277         case PIPE_CAP_MAX_POINT_WIDTH:
 278         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 279             /* The maximum dimensions of the colorbuffer are our practical
 280              * rendering limits. 2048 pixels should be enough for anybody. */
 281             if (r300screen->caps.is_r500) {
 282                 return 4096.0f;
 283             } else if (r300screen->caps.is_r400) {
 284                 return 4021.0f;
 285             } else {
 286                 return 2560.0f;
 287             }
 288         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 289             return 16.0f;
 290         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 291             return 16.0f;
 292         case PIPE_CAP_GUARD_BAND_LEFT:
 293         case PIPE_CAP_GUARD_BAND_TOP:
 294         case PIPE_CAP_GUARD_BAND_RIGHT:
 295         case PIPE_CAP_GUARD_BAND_BOTTOM:
 296             /* XXX I don't know what these should be but the least we can do is
 297              * silence the potential error message */
 298             return 0.0f;
 299         default:
 300             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 301                          param);
 302             return 0.0f;
 303     }
 304 }
 305
 306 static int r300_get_video_param(struct pipe_screen *screen,
 307                                 enum pipe_video_profile profile,
 308                                 enum pipe_video_cap param)
 309 {
 310         switch (param) {
 311         case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 312                 return 0;
 313         default:
 314                 return 0;
 315         }
 316 }
 317
 318 static boolean r300_is_format_supported(struct pipe_screen* screen,
 319                                         enum pipe_format format,
 320                                         enum pipe_texture_target target,
 321                                         unsigned sample_count,
 322                                         unsigned usage)
 323 {
 324     struct radeon_winsys *rws = r300_screen(screen)->rws;
 325     uint32_t retval = 0;
 326     boolean drm_2_8_0 = rws->get_value(rws, RADEON_VID_DRM_2_8_0);
 327     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 328     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 329     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 330                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 331                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 332                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 333     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 334                        format == PIPE_FORMAT_RGTC1_SNORM ||
 335                        format == PIPE_FORMAT_LATC1_UNORM ||
 336                        format == PIPE_FORMAT_LATC1_SNORM;
 337     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 338                        format == PIPE_FORMAT_RGTC2_SNORM ||
 339                        format == PIPE_FORMAT_LATC2_UNORM ||
 340                        format == PIPE_FORMAT_LATC2_SNORM;
 341     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 342                             format == PIPE_FORMAT_R16G16_FLOAT ||
 343                             format == PIPE_FORMAT_A16_FLOAT ||
 344                             format == PIPE_FORMAT_L16_FLOAT ||
 345                             format == PIPE_FORMAT_L16A16_FLOAT ||
 346                             format == PIPE_FORMAT_I16_FLOAT;
 347     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 348                             format == PIPE_FORMAT_R16G16_FLOAT ||
 349                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 350                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 351
 352     if (!util_format_is_supported(format, usage))
 353        return FALSE;
 354
 355     /* Check multisampling support. */
 356     switch (sample_count) {
 357         case 0:
 358         case 1:
 359             break;
 360         case 2:
 361         case 3:
 362         case 4:
 363         case 6:
 364             return FALSE;
 365 #if 0
 366             if (usage != PIPE_BIND_RENDER_TARGET ||
 367                 !util_format_is_rgba8_variant(
 368                     util_format_description(format))) {
 369                 return FALSE;
 370             }
 371 #endif
 372             break;
 373         default:
 374             return FALSE;
 375     }
 376
 377     /* Check sampler format support. */
 378     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 379         /* ATI1N is r5xx-only. */
 380         (is_r500 || !is_ati1n) &&
 381         /* ATI2N is supported on r4xx-r5xx. */
 382         (is_r400 || is_r500 || !is_ati2n) &&
 383         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 384         (drm_2_8_0 || !is_x16f_xy16f) &&
 385         r300_is_sampler_format_supported(format)) {
 386         retval |= PIPE_BIND_SAMPLER_VIEW;
 387     }
 388
 389     /* Check colorbuffer format support. */
 390     if ((usage & (PIPE_BIND_RENDER_TARGET |
 391                   PIPE_BIND_DISPLAY_TARGET |
 392                   PIPE_BIND_SCANOUT |
 393                   PIPE_BIND_SHARED)) &&
 394         /* 2101010 cannot be rendered to on non-r5xx. */
 395         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 396         r300_is_colorbuffer_format_supported(format)) {
 397         retval |= usage &
 398             (PIPE_BIND_RENDER_TARGET |
 399              PIPE_BIND_DISPLAY_TARGET |
 400              PIPE_BIND_SCANOUT |
 401              PIPE_BIND_SHARED);
 402     }
 403
 404     /* Check depth-stencil format support. */
 405     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 406         r300_is_zs_format_supported(format)) {
 407         retval |= PIPE_BIND_DEPTH_STENCIL;
 408     }
 409
 410     /* Check vertex buffer format support. */
 411     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 412         /* Half float is supported on >= RV350. */
 413         (is_r400 || is_r500 || !is_half_float) &&
 414         r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 415         retval |= PIPE_BIND_VERTEX_BUFFER;
 416     }
 417
 418     /* Transfers are always supported. */
 419     if (usage & PIPE_BIND_TRANSFER_READ)
 420         retval |= PIPE_BIND_TRANSFER_READ;
 421     if (usage & PIPE_BIND_TRANSFER_WRITE)
 422         retval |= PIPE_BIND_TRANSFER_WRITE;
 423
 424     return retval == usage;
 425 }
 426
 427 static void r300_destroy_screen(struct pipe_screen* pscreen)
 428 {
 429     struct r300_screen* r300screen = r300_screen(pscreen);
 430     struct radeon_winsys *rws = radeon_winsys(pscreen);
 431
 432     util_slab_destroy(&r300screen->pool_buffers);
 433     pipe_mutex_destroy(r300screen->num_contexts_mutex);
 434
 435     if (rws)
 436       rws->destroy(rws);
 437
 438     FREE(r300screen);
 439 }
 440
 441 static void r300_fence_reference(struct pipe_screen *screen,
 442                                  struct pipe_fence_handle **ptr,
 443                                  struct pipe_fence_handle *fence)
 444 {
 445     pb_reference((struct pb_buffer**)ptr,
 446                              (struct pb_buffer*)fence);
 447 }
 448
 449 static boolean r300_fence_signalled(struct pipe_screen *screen,
 450                                     struct pipe_fence_handle *fence)
 451 {
 452     struct radeon_winsys *rws = r300_screen(screen)->rws;
 453     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 454
 455     return !rws->buffer_is_busy(rfence);
 456 }
 457
 458 static boolean r300_fence_finish(struct pipe_screen *screen,
 459                                  struct pipe_fence_handle *fence,
 460                                  uint64_t timeout)
 461 {
 462     struct radeon_winsys *rws = r300_screen(screen)->rws;
 463     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 464
 465     if (timeout != PIPE_TIMEOUT_INFINITE) {
 466         int64_t start_time = os_time_get();
 467
 468         /* Convert to microseconds. */
 469         timeout /= 1000;
 470
 471         /* Wait in a loop. */
 472         while (rws->buffer_is_busy(rfence)) {
 473             if (os_time_get() - start_time >= timeout) {
 474                 return FALSE;
 475             }
 476             os_time_sleep(10);
 477         }
 478         return TRUE;
 479     }
 480
 481     rws->buffer_wait(rfence);
 482     return TRUE;
 483 }
 484
 485 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 486 {
 487     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 488
 489     if (!r300screen) {
 490         FREE(r300screen);
 491         return NULL;
 492     }
 493
 494     r300screen->caps.pci_id = rws->get_value(rws, RADEON_VID_PCI_ID);
 495     r300screen->caps.num_frag_pipes = rws->get_value(rws, RADEON_VID_R300_GB_PIPES);
 496     r300screen->caps.num_z_pipes = rws->get_value(rws, RADEON_VID_R300_Z_PIPES);
 497
 498     r300_init_debug(r300screen);
 499     r300_parse_chipset(&r300screen->caps);
 500
 501     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 502         r300screen->caps.zmask_ram = 0;
 503     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 504         r300screen->caps.hiz_ram = 0;
 505
 506     if (!rws->get_value(rws, RADEON_VID_DRM_2_8_0))
 507         r300screen->caps.has_us_format = FALSE;
 508
 509     pipe_mutex_init(r300screen->num_contexts_mutex);
 510
 511     util_slab_create(&r300screen->pool_buffers,
 512                      sizeof(struct r300_resource), 64,
 513                      UTIL_SLAB_SINGLETHREADED);
 514
 515     r300screen->rws = rws;
 516     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 517     r300screen->screen.destroy = r300_destroy_screen;
 518     r300screen->screen.get_name = r300_get_name;
 519     r300screen->screen.get_vendor = r300_get_vendor;
 520     r300screen->screen.get_param = r300_get_param;
 521     r300screen->screen.get_shader_param = r300_get_shader_param;
 522     r300screen->screen.get_paramf = r300_get_paramf;
 523     r300screen->screen.get_video_param = r300_get_video_param;
 524     r300screen->screen.is_format_supported = r300_is_format_supported;
 525     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 526     r300screen->screen.context_create = r300_create_context;
 527     r300screen->screen.fence_reference = r300_fence_reference;
 528     r300screen->screen.fence_signalled = r300_fence_signalled;
 529     r300screen->screen.fence_finish = r300_fence_finish;
 530
 531     r300_init_screen_resource_functions(r300screen);
 532
 533     util_format_s3tc_init();
 534
 535     return &r300screen->screen;
 536 }