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_decoder.h"
  29 #include "vl/vl_video_buffer.h"
  30
  31 #include "r300_context.h"
  32 #include "r300_texture.h"
  33 #include "r300_screen_buffer.h"
  34 #include "r300_state_inlines.h"
  35 #include "r300_public.h"
  36
  37 #include "draw/draw_context.h"
  38
  39 /* Return the identifier behind whom the brave coders responsible for this
  40  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  41  *
  42  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  43  *
  44  * (Or egotistical. Yet.) */
  45 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  46 {
  47     return "X.Org R300 Project";
  48 }
  49
  50 static const char* chip_families[] = {
  51     "ATI R300",
  52     "ATI R350",
  53     "ATI RV350",
  54     "ATI RV370",
  55     "ATI RV380",
  56     "ATI RS400",
  57     "ATI RC410",
  58     "ATI RS480",
  59     "ATI R420",
  60     "ATI R423",
  61     "ATI R430",
  62     "ATI R480",
  63     "ATI R481",
  64     "ATI RV410",
  65     "ATI RS600",
  66     "ATI RS690",
  67     "ATI RS740",
  68     "ATI RV515",
  69     "ATI R520",
  70     "ATI RV530",
  71     "ATI R580",
  72     "ATI RV560",
  73     "ATI RV570"
  74 };
  75
  76 static const char* r300_get_name(struct pipe_screen* pscreen)
  77 {
  78     struct r300_screen* r300screen = r300_screen(pscreen);
  79
  80     return chip_families[r300screen->caps.family];
  81 }
  82
  83 static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
  84 {
  85     struct r300_screen* r300screen = r300_screen(pscreen);
  86     boolean is_r500 = r300screen->caps.is_r500;
  87
  88     switch (param) {
  89         /* Supported features (boolean caps). */
  90         case PIPE_CAP_NPOT_TEXTURES:
  91         case PIPE_CAP_TWO_SIDED_STENCIL:
  92         case PIPE_CAP_ANISOTROPIC_FILTER:
  93         case PIPE_CAP_POINT_SPRITE:
  94         case PIPE_CAP_OCCLUSION_QUERY:
  95         case PIPE_CAP_TEXTURE_SHADOW_MAP:
  96         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  97         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  98         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
  99         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 100         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 101         case PIPE_CAP_CONDITIONAL_RENDER:
 102         case PIPE_CAP_TEXTURE_BARRIER:
 103             return 1;
 104
 105         /* r300 cannot do swizzling of compressed textures. Supported otherwise. */
 106         case PIPE_CAP_TEXTURE_SWIZZLE:
 107             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 108
 109         /* Supported on r500 only. */
 110         case PIPE_CAP_FRAGMENT_COLOR_CLAMP_CONTROL:
 111         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 112         case PIPE_CAP_SM3:
 113             return is_r500 ? 1 : 0;
 114
 115         /* Unsupported features. */
 116         case PIPE_CAP_TIMER_QUERY:
 117         case PIPE_CAP_DUAL_SOURCE_BLEND:
 118         case PIPE_CAP_INDEP_BLEND_ENABLE:
 119         case PIPE_CAP_INDEP_BLEND_FUNC:
 120         case PIPE_CAP_DEPTH_CLAMP:
 121         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 122         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 123         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 124         case PIPE_CAP_TGSI_INSTANCEID:
 125         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 126         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 127         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 128         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 129         case PIPE_CAP_SCALED_RESOLVE:
 130         case PIPE_CAP_MIN_TEXEL_OFFSET:
 131         case PIPE_CAP_MAX_TEXEL_OFFSET:
 132         case PIPE_CAP_STREAM_OUTPUT:
 133             return 0;
 134
 135         /* SWTCL-only features. */
 136         case PIPE_CAP_PRIMITIVE_RESTART:
 137             return !r300screen->caps.has_tcl;
 138
 139         /* Texturing. */
 140         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 141             return r300screen->caps.num_tex_units;
 142         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 143         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 144         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 145             /* 13 == 4096, 12 == 2048 */
 146             return is_r500 ? 13 : 12;
 147
 148         /* Render targets. */
 149         case PIPE_CAP_MAX_RENDER_TARGETS:
 150             return 4;
 151     }
 152     return 0;
 153 }
 154
 155 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 156 {
 157    struct r300_screen* r300screen = r300_screen(pscreen);
 158    boolean is_r400 = r300screen->caps.is_r400;
 159    boolean is_r500 = r300screen->caps.is_r500;
 160
 161    switch (shader) {
 162     case PIPE_SHADER_FRAGMENT:
 163         switch (param)
 164         {
 165         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 166             return is_r500 || is_r400 ? 512 : 96;
 167         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 168             return is_r500 || is_r400 ? 512 : 64;
 169         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 170             return is_r500 || is_r400 ? 512 : 32;
 171         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 172             return is_r500 ? 511 : 4;
 173         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 174             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 175             /* Fragment shader limits. */
 176         case PIPE_SHADER_CAP_MAX_INPUTS:
 177             /* 2 colors + 8 texcoords are always supported
 178              * (minus fog and wpos).
 179              *
 180              * R500 has the ability to turn 3rd and 4th color into
 181              * additional texcoords but there is no two-sided color
 182              * selection then. However the facing bit can be used instead. */
 183             return 10;
 184         case PIPE_SHADER_CAP_MAX_CONSTS:
 185             return is_r500 ? 256 : 32;
 186         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 187             return 1;
 188         case PIPE_SHADER_CAP_MAX_TEMPS:
 189             return is_r500 ? 128 : is_r400 ? 64 : 32;
 190         case PIPE_SHADER_CAP_MAX_ADDRS:
 191             return 0;
 192         case PIPE_SHADER_CAP_MAX_PREDS:
 193             return is_r500 ? 1 : 0;
 194         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 195         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 196         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 197         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 198         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 199         case PIPE_SHADER_CAP_SUBROUTINES:
 200         case PIPE_SHADER_CAP_INTEGERS:
 201             return 0;
 202         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 203            return r300screen->caps.num_tex_units;
 204         }
 205         break;
 206     case PIPE_SHADER_VERTEX:
 207         switch (param)
 208         {
 209         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 210             return 0;
 211         default:;
 212         }
 213
 214         if (!r300screen->caps.has_tcl) {
 215             return draw_get_shader_param(shader, param);
 216         }
 217
 218         switch (param)
 219         {
 220         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 221         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 222             return is_r500 ? 1024 : 256;
 223         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 224         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 225             return 0;
 226         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 227             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 228         case PIPE_SHADER_CAP_MAX_INPUTS:
 229             return 16;
 230         case PIPE_SHADER_CAP_MAX_CONSTS:
 231             return 256;
 232         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 233             return 1;
 234         case PIPE_SHADER_CAP_MAX_TEMPS:
 235             return 32;
 236         case PIPE_SHADER_CAP_MAX_ADDRS:
 237             return 1; /* XXX guessed */
 238         case PIPE_SHADER_CAP_MAX_PREDS:
 239             return is_r500 ? 4 : 0; /* XXX guessed. */
 240         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 241             return 1;
 242         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 243         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 244         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 245         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 246         case PIPE_SHADER_CAP_SUBROUTINES:
 247         case PIPE_SHADER_CAP_INTEGERS:
 248             return 0;
 249         }
 250         break;
 251     }
 252     return 0;
 253 }
 254
 255 static float r300_get_paramf(struct pipe_screen* pscreen,
 256                              enum pipe_capf param)
 257 {
 258     struct r300_screen* r300screen = r300_screen(pscreen);
 259
 260     switch (param) {
 261         case PIPE_CAPF_MAX_LINE_WIDTH:
 262         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 263         case PIPE_CAPF_MAX_POINT_WIDTH:
 264         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 265             /* The maximum dimensions of the colorbuffer are our practical
 266              * rendering limits. 2048 pixels should be enough for anybody. */
 267             if (r300screen->caps.is_r500) {
 268                 return 4096.0f;
 269             } else if (r300screen->caps.is_r400) {
 270                 return 4021.0f;
 271             } else {
 272                 return 2560.0f;
 273             }
 274         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 275             return 16.0f;
 276         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 277             return 16.0f;
 278         case PIPE_CAPF_GUARD_BAND_LEFT:
 279         case PIPE_CAPF_GUARD_BAND_TOP:
 280         case PIPE_CAPF_GUARD_BAND_RIGHT:
 281         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 282             /* XXX I don't know what these should be but the least we can do is
 283              * silence the potential error message */
 284             return 0.0f;
 285         default:
 286             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 287                          param);
 288             return 0.0f;
 289     }
 290 }
 291
 292 static int r300_get_video_param(struct pipe_screen *screen,
 293                                 enum pipe_video_profile profile,
 294                                 enum pipe_video_cap param)
 295 {
 296    switch (param) {
 297       case PIPE_VIDEO_CAP_SUPPORTED:
 298          return vl_profile_supported(screen, profile);
 299       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 300          return 0;
 301       case PIPE_VIDEO_CAP_MAX_WIDTH:
 302       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 303          return vl_video_buffer_max_size(screen);
 304       case PIPE_VIDEO_CAP_NUM_BUFFERS_DESIRED:
 305          return vl_num_buffers_desired(screen, profile);
 306       default:
 307          return 0;
 308    }
 309 }
 310
 311 static boolean r300_is_format_supported(struct pipe_screen* screen,
 312                                         enum pipe_format format,
 313                                         enum pipe_texture_target target,
 314                                         unsigned sample_count,
 315                                         unsigned usage)
 316 {
 317     uint32_t retval = 0;
 318     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 319     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 320     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 321     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 322                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 323                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 324                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 325     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 326                        format == PIPE_FORMAT_RGTC1_SNORM ||
 327                        format == PIPE_FORMAT_LATC1_UNORM ||
 328                        format == PIPE_FORMAT_LATC1_SNORM;
 329     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 330                        format == PIPE_FORMAT_RGTC2_SNORM ||
 331                        format == PIPE_FORMAT_LATC2_UNORM ||
 332                        format == PIPE_FORMAT_LATC2_SNORM;
 333     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 334                             format == PIPE_FORMAT_R16G16_FLOAT ||
 335                             format == PIPE_FORMAT_A16_FLOAT ||
 336                             format == PIPE_FORMAT_L16_FLOAT ||
 337                             format == PIPE_FORMAT_L16A16_FLOAT ||
 338                             format == PIPE_FORMAT_I16_FLOAT;
 339     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 340                             format == PIPE_FORMAT_R16G16_FLOAT ||
 341                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 342                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 343     boolean is_fixed = format == PIPE_FORMAT_R32_FIXED ||
 344                        format == PIPE_FORMAT_R32G32_FIXED ||
 345                        format == PIPE_FORMAT_R32G32B32_FIXED ||
 346                        format == PIPE_FORMAT_R32G32B32A32_FIXED;
 347
 348     if (!util_format_is_supported(format, usage))
 349        return FALSE;
 350
 351     /* Check multisampling support. */
 352     switch (sample_count) {
 353         case 0:
 354         case 1:
 355             break;
 356         case 2:
 357         case 3:
 358         case 4:
 359         case 6:
 360             return FALSE;
 361 #if 0
 362             if (usage != PIPE_BIND_RENDER_TARGET ||
 363                 !util_format_is_rgba8_variant(
 364                     util_format_description(format))) {
 365                 return FALSE;
 366             }
 367 #endif
 368             break;
 369         default:
 370             return FALSE;
 371     }
 372
 373     /* Check sampler format support. */
 374     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 375         /* ATI1N is r5xx-only. */
 376         (is_r500 || !is_ati1n) &&
 377         /* ATI2N is supported on r4xx-r5xx. */
 378         (is_r400 || is_r500 || !is_ati2n) &&
 379         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 380         (drm_2_8_0 || !is_x16f_xy16f) &&
 381         r300_is_sampler_format_supported(format)) {
 382         retval |= PIPE_BIND_SAMPLER_VIEW;
 383     }
 384
 385     /* Check colorbuffer format support. */
 386     if ((usage & (PIPE_BIND_RENDER_TARGET |
 387                   PIPE_BIND_DISPLAY_TARGET |
 388                   PIPE_BIND_SCANOUT |
 389                   PIPE_BIND_SHARED)) &&
 390         /* 2101010 cannot be rendered to on non-r5xx. */
 391         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 392         r300_is_colorbuffer_format_supported(format)) {
 393         retval |= usage &
 394             (PIPE_BIND_RENDER_TARGET |
 395              PIPE_BIND_DISPLAY_TARGET |
 396              PIPE_BIND_SCANOUT |
 397              PIPE_BIND_SHARED);
 398     }
 399
 400     /* Check depth-stencil format support. */
 401     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 402         r300_is_zs_format_supported(format)) {
 403         retval |= PIPE_BIND_DEPTH_STENCIL;
 404     }
 405
 406     /* Check vertex buffer format support. */
 407     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 408         /* Half float is supported on >= R400. */
 409         (is_r400 || is_r500 || !is_half_float) &&
 410         /* We have a fallback for FIXED. */
 411         (is_fixed || r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT)) {
 412         retval |= PIPE_BIND_VERTEX_BUFFER;
 413     }
 414
 415     /* Transfers are always supported. */
 416     if (usage & PIPE_BIND_TRANSFER_READ)
 417         retval |= PIPE_BIND_TRANSFER_READ;
 418     if (usage & PIPE_BIND_TRANSFER_WRITE)
 419         retval |= PIPE_BIND_TRANSFER_WRITE;
 420
 421     return retval == usage;
 422 }
 423
 424 static void r300_destroy_screen(struct pipe_screen* pscreen)
 425 {
 426     struct r300_screen* r300screen = r300_screen(pscreen);
 427     struct radeon_winsys *rws = radeon_winsys(pscreen);
 428
 429     util_slab_destroy(&r300screen->pool_buffers);
 430     pipe_mutex_destroy(r300screen->num_contexts_mutex);
 431
 432     if (rws)
 433       rws->destroy(rws);
 434
 435     FREE(r300screen);
 436 }
 437
 438 static void r300_fence_reference(struct pipe_screen *screen,
 439                                  struct pipe_fence_handle **ptr,
 440                                  struct pipe_fence_handle *fence)
 441 {
 442     pb_reference((struct pb_buffer**)ptr,
 443                              (struct pb_buffer*)fence);
 444 }
 445
 446 static boolean r300_fence_signalled(struct pipe_screen *screen,
 447                                     struct pipe_fence_handle *fence)
 448 {
 449     struct radeon_winsys *rws = r300_screen(screen)->rws;
 450     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 451
 452     return !rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE);
 453 }
 454
 455 static boolean r300_fence_finish(struct pipe_screen *screen,
 456                                  struct pipe_fence_handle *fence,
 457                                  uint64_t timeout)
 458 {
 459     struct radeon_winsys *rws = r300_screen(screen)->rws;
 460     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 461
 462     if (timeout != PIPE_TIMEOUT_INFINITE) {
 463         int64_t start_time = os_time_get();
 464
 465         /* Convert to microseconds. */
 466         timeout /= 1000;
 467
 468         /* Wait in a loop. */
 469         while (rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE)) {
 470             if (os_time_get() - start_time >= timeout) {
 471                 return FALSE;
 472             }
 473             os_time_sleep(10);
 474         }
 475         return TRUE;
 476     }
 477
 478     rws->buffer_wait(rfence, RADEON_USAGE_READWRITE);
 479     return TRUE;
 480 }
 481
 482 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 483 {
 484     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 485
 486     if (!r300screen) {
 487         FREE(r300screen);
 488         return NULL;
 489     }
 490
 491     rws->query_info(rws, &r300screen->info);
 492
 493     r300_init_debug(r300screen);
 494     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 495
 496     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 497         r300screen->caps.zmask_ram = 0;
 498     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 499         r300screen->caps.hiz_ram = 0;
 500
 501     if (r300screen->info.drm_minor < 8)
 502         r300screen->caps.has_us_format = FALSE;
 503
 504     pipe_mutex_init(r300screen->num_contexts_mutex);
 505
 506     util_slab_create(&r300screen->pool_buffers,
 507                      sizeof(struct r300_resource), 64,
 508                      UTIL_SLAB_SINGLETHREADED);
 509
 510     r300screen->rws = rws;
 511     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 512     r300screen->screen.destroy = r300_destroy_screen;
 513     r300screen->screen.get_name = r300_get_name;
 514     r300screen->screen.get_vendor = r300_get_vendor;
 515     r300screen->screen.get_param = r300_get_param;
 516     r300screen->screen.get_shader_param = r300_get_shader_param;
 517     r300screen->screen.get_paramf = r300_get_paramf;
 518     r300screen->screen.get_video_param = r300_get_video_param;
 519     r300screen->screen.is_format_supported = r300_is_format_supported;
 520     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 521     r300screen->screen.context_create = r300_create_context;
 522     r300screen->screen.fence_reference = r300_fence_reference;
 523     r300screen->screen.fence_signalled = r300_fence_signalled;
 524     r300screen->screen.fence_finish = r300_fence_finish;
 525
 526     r300_init_screen_resource_functions(r300screen);
 527
 528     util_format_s3tc_init();
 529
 530     return &r300screen->screen;
 531 }