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         case PIPE_CAP_TGSI_CAN_COMPACT_VARYINGS:
 104         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 105         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 106             return 1;
 107
 108         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 109             return 120;
 110
 111         /* r300 cannot do swizzling of compressed textures. Supported otherwise. */
 112         case PIPE_CAP_TEXTURE_SWIZZLE:
 113             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 114
 115         /* Supported on r500 only. */
 116         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 117         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 118         case PIPE_CAP_SM3:
 119             return is_r500 ? 1 : 0;
 120
 121         /* Unsupported features. */
 122         case PIPE_CAP_TIMER_QUERY:
 123         case PIPE_CAP_DUAL_SOURCE_BLEND:
 124         case PIPE_CAP_INDEP_BLEND_ENABLE:
 125         case PIPE_CAP_INDEP_BLEND_FUNC:
 126         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 127         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 128         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 129         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 130         case PIPE_CAP_TGSI_INSTANCEID:
 131         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 132         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 133         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 134         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 135         case PIPE_CAP_SCALED_RESOLVE:
 136         case PIPE_CAP_MIN_TEXEL_OFFSET:
 137         case PIPE_CAP_MAX_TEXEL_OFFSET:
 138         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 139         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 140         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 141         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 142         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 143             return 0;
 144
 145         /* SWTCL-only features. */
 146         case PIPE_CAP_PRIMITIVE_RESTART:
 147             return !r300screen->caps.has_tcl;
 148
 149         /* Texturing. */
 150         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 151             return r300screen->caps.num_tex_units;
 152         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 153         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 154         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 155             /* 13 == 4096, 12 == 2048 */
 156             return is_r500 ? 13 : 12;
 157
 158         /* Render targets. */
 159         case PIPE_CAP_MAX_RENDER_TARGETS:
 160             return 4;
 161     }
 162     return 0;
 163 }
 164
 165 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 166 {
 167    struct r300_screen* r300screen = r300_screen(pscreen);
 168    boolean is_r400 = r300screen->caps.is_r400;
 169    boolean is_r500 = r300screen->caps.is_r500;
 170
 171    switch (shader) {
 172     case PIPE_SHADER_FRAGMENT:
 173         switch (param)
 174         {
 175         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 176             return is_r500 || is_r400 ? 512 : 96;
 177         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 178             return is_r500 || is_r400 ? 512 : 64;
 179         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 180             return is_r500 || is_r400 ? 512 : 32;
 181         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 182             return is_r500 ? 511 : 4;
 183         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 184             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 185             /* Fragment shader limits. */
 186         case PIPE_SHADER_CAP_MAX_INPUTS:
 187             /* 2 colors + 8 texcoords are always supported
 188              * (minus fog and wpos).
 189              *
 190              * R500 has the ability to turn 3rd and 4th color into
 191              * additional texcoords but there is no two-sided color
 192              * selection then. However the facing bit can be used instead. */
 193             return 10;
 194         case PIPE_SHADER_CAP_MAX_CONSTS:
 195             return is_r500 ? 256 : 32;
 196         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 197             return 1;
 198         case PIPE_SHADER_CAP_MAX_TEMPS:
 199             return is_r500 ? 128 : is_r400 ? 64 : 32;
 200         case PIPE_SHADER_CAP_MAX_PREDS:
 201             return is_r500 ? 1 : 0;
 202         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 203            return r300screen->caps.num_tex_units;
 204         case PIPE_SHADER_CAP_MAX_ADDRS:
 205         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 206         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 207         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 208         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 209         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 210         case PIPE_SHADER_CAP_SUBROUTINES:
 211         case PIPE_SHADER_CAP_INTEGERS:
 212         case PIPE_SHADER_CAP_OUTPUT_READ:
 213             return 0;
 214         }
 215         break;
 216     case PIPE_SHADER_VERTEX:
 217         switch (param)
 218         {
 219         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 220             return 0;
 221         default:;
 222         }
 223
 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_CONTROL_FLOW_DEPTH:
 234             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 235         case PIPE_SHADER_CAP_MAX_INPUTS:
 236             return 16;
 237         case PIPE_SHADER_CAP_MAX_CONSTS:
 238             return 256;
 239         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 240             return 1;
 241         case PIPE_SHADER_CAP_MAX_TEMPS:
 242             return 32;
 243         case PIPE_SHADER_CAP_MAX_ADDRS:
 244             return 1; /* XXX guessed */
 245         case PIPE_SHADER_CAP_MAX_PREDS:
 246             return is_r500 ? 4 : 0; /* XXX guessed. */
 247         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 248             return 1;
 249         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 250         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 251         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 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         case PIPE_SHADER_CAP_SUBROUTINES:
 256         case PIPE_SHADER_CAP_INTEGERS:
 257         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 258         case PIPE_SHADER_CAP_OUTPUT_READ:
 259             return 0;
 260         }
 261         break;
 262     }
 263     return 0;
 264 }
 265
 266 static float r300_get_paramf(struct pipe_screen* pscreen,
 267                              enum pipe_capf param)
 268 {
 269     struct r300_screen* r300screen = r300_screen(pscreen);
 270
 271     switch (param) {
 272         case PIPE_CAPF_MAX_LINE_WIDTH:
 273         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 274         case PIPE_CAPF_MAX_POINT_WIDTH:
 275         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 276             /* The maximum dimensions of the colorbuffer are our practical
 277              * rendering limits. 2048 pixels should be enough for anybody. */
 278             if (r300screen->caps.is_r500) {
 279                 return 4096.0f;
 280             } else if (r300screen->caps.is_r400) {
 281                 return 4021.0f;
 282             } else {
 283                 return 2560.0f;
 284             }
 285         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 286             return 16.0f;
 287         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 288             return 16.0f;
 289         case PIPE_CAPF_GUARD_BAND_LEFT:
 290         case PIPE_CAPF_GUARD_BAND_TOP:
 291         case PIPE_CAPF_GUARD_BAND_RIGHT:
 292         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 293             /* XXX I don't know what these should be but the least we can do is
 294              * silence the potential error message */
 295             return 0.0f;
 296         default:
 297             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 298                          param);
 299             return 0.0f;
 300     }
 301 }
 302
 303 static int r300_get_video_param(struct pipe_screen *screen,
 304                                 enum pipe_video_profile profile,
 305                                 enum pipe_video_cap param)
 306 {
 307    switch (param) {
 308       case PIPE_VIDEO_CAP_SUPPORTED:
 309          return vl_profile_supported(screen, profile);
 310       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 311          return 0;
 312       case PIPE_VIDEO_CAP_MAX_WIDTH:
 313       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 314          return vl_video_buffer_max_size(screen);
 315       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 316          return PIPE_FORMAT_NV12;
 317       default:
 318          return 0;
 319    }
 320 }
 321
 322 static boolean r300_is_format_supported(struct pipe_screen* screen,
 323                                         enum pipe_format format,
 324                                         enum pipe_texture_target target,
 325                                         unsigned sample_count,
 326                                         unsigned usage)
 327 {
 328     uint32_t retval = 0;
 329     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 330     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 331     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 332     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 333                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 334                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 335                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 336     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 337                        format == PIPE_FORMAT_RGTC1_SNORM ||
 338                        format == PIPE_FORMAT_LATC1_UNORM ||
 339                        format == PIPE_FORMAT_LATC1_SNORM;
 340     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 341                        format == PIPE_FORMAT_RGTC2_SNORM ||
 342                        format == PIPE_FORMAT_LATC2_UNORM ||
 343                        format == PIPE_FORMAT_LATC2_SNORM;
 344     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 345                             format == PIPE_FORMAT_R16G16_FLOAT ||
 346                             format == PIPE_FORMAT_A16_FLOAT ||
 347                             format == PIPE_FORMAT_L16_FLOAT ||
 348                             format == PIPE_FORMAT_L16A16_FLOAT ||
 349                             format == PIPE_FORMAT_I16_FLOAT;
 350     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 351                             format == PIPE_FORMAT_R16G16_FLOAT ||
 352                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 353                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 354     boolean is_fixed = format == PIPE_FORMAT_R32_FIXED ||
 355                        format == PIPE_FORMAT_R32G32_FIXED ||
 356                        format == PIPE_FORMAT_R32G32B32_FIXED ||
 357                        format == PIPE_FORMAT_R32G32B32A32_FIXED;
 358
 359     if (!util_format_is_supported(format, usage))
 360        return FALSE;
 361
 362     /* Check multisampling support. */
 363     switch (sample_count) {
 364         case 0:
 365         case 1:
 366             break;
 367         case 2:
 368         case 3:
 369         case 4:
 370         case 6:
 371             return FALSE;
 372 #if 0
 373             if (usage != PIPE_BIND_RENDER_TARGET ||
 374                 !util_format_is_rgba8_variant(
 375                     util_format_description(format))) {
 376                 return FALSE;
 377             }
 378 #endif
 379             break;
 380         default:
 381             return FALSE;
 382     }
 383
 384     /* Check sampler format support. */
 385     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 386         /* ATI1N is r5xx-only. */
 387         (is_r500 || !is_ati1n) &&
 388         /* ATI2N is supported on r4xx-r5xx. */
 389         (is_r400 || is_r500 || !is_ati2n) &&
 390         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 391         (drm_2_8_0 || !is_x16f_xy16f) &&
 392         r300_is_sampler_format_supported(format)) {
 393         retval |= PIPE_BIND_SAMPLER_VIEW;
 394     }
 395
 396     /* Check colorbuffer format support. */
 397     if ((usage & (PIPE_BIND_RENDER_TARGET |
 398                   PIPE_BIND_DISPLAY_TARGET |
 399                   PIPE_BIND_SCANOUT |
 400                   PIPE_BIND_SHARED)) &&
 401         /* 2101010 cannot be rendered to on non-r5xx. */
 402         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 403         r300_is_colorbuffer_format_supported(format)) {
 404         retval |= usage &
 405             (PIPE_BIND_RENDER_TARGET |
 406              PIPE_BIND_DISPLAY_TARGET |
 407              PIPE_BIND_SCANOUT |
 408              PIPE_BIND_SHARED);
 409     }
 410
 411     /* Check depth-stencil format support. */
 412     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 413         r300_is_zs_format_supported(format)) {
 414         retval |= PIPE_BIND_DEPTH_STENCIL;
 415     }
 416
 417     /* Check vertex buffer format support. */
 418     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 419         /* Half float is supported on >= R400. */
 420         (is_r400 || is_r500 || !is_half_float) &&
 421         /* We have a fallback for FIXED. */
 422         (is_fixed || r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT)) {
 423         retval |= PIPE_BIND_VERTEX_BUFFER;
 424     }
 425
 426     /* Transfers are always supported. */
 427     if (usage & PIPE_BIND_TRANSFER_READ)
 428         retval |= PIPE_BIND_TRANSFER_READ;
 429     if (usage & PIPE_BIND_TRANSFER_WRITE)
 430         retval |= PIPE_BIND_TRANSFER_WRITE;
 431
 432     return retval == usage;
 433 }
 434
 435 static void r300_destroy_screen(struct pipe_screen* pscreen)
 436 {
 437     struct r300_screen* r300screen = r300_screen(pscreen);
 438     struct radeon_winsys *rws = radeon_winsys(pscreen);
 439
 440     util_slab_destroy(&r300screen->pool_buffers);
 441     pipe_mutex_destroy(r300screen->num_contexts_mutex);
 442
 443     if (rws)
 444       rws->destroy(rws);
 445
 446     FREE(r300screen);
 447 }
 448
 449 static void r300_fence_reference(struct pipe_screen *screen,
 450                                  struct pipe_fence_handle **ptr,
 451                                  struct pipe_fence_handle *fence)
 452 {
 453     pb_reference((struct pb_buffer**)ptr,
 454                              (struct pb_buffer*)fence);
 455 }
 456
 457 static boolean r300_fence_signalled(struct pipe_screen *screen,
 458                                     struct pipe_fence_handle *fence)
 459 {
 460     struct radeon_winsys *rws = r300_screen(screen)->rws;
 461     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 462
 463     return !rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE);
 464 }
 465
 466 static boolean r300_fence_finish(struct pipe_screen *screen,
 467                                  struct pipe_fence_handle *fence,
 468                                  uint64_t timeout)
 469 {
 470     struct radeon_winsys *rws = r300_screen(screen)->rws;
 471     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 472
 473     if (timeout != PIPE_TIMEOUT_INFINITE) {
 474         int64_t start_time = os_time_get();
 475
 476         /* Convert to microseconds. */
 477         timeout /= 1000;
 478
 479         /* Wait in a loop. */
 480         while (rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE)) {
 481             if (os_time_get() - start_time >= timeout) {
 482                 return FALSE;
 483             }
 484             os_time_sleep(10);
 485         }
 486         return TRUE;
 487     }
 488
 489     rws->buffer_wait(rfence, RADEON_USAGE_READWRITE);
 490     return TRUE;
 491 }
 492
 493 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 494 {
 495     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 496
 497     if (!r300screen) {
 498         FREE(r300screen);
 499         return NULL;
 500     }
 501
 502     rws->query_info(rws, &r300screen->info);
 503
 504     r300_init_debug(r300screen);
 505     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 506
 507     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 508         r300screen->caps.zmask_ram = 0;
 509     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 510         r300screen->caps.hiz_ram = 0;
 511
 512     if (r300screen->info.drm_minor < 8)
 513         r300screen->caps.has_us_format = FALSE;
 514
 515     pipe_mutex_init(r300screen->num_contexts_mutex);
 516
 517     util_slab_create(&r300screen->pool_buffers,
 518                      sizeof(struct r300_resource), 64,
 519                      UTIL_SLAB_SINGLETHREADED);
 520
 521     r300screen->rws = rws;
 522     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 523     r300screen->screen.destroy = r300_destroy_screen;
 524     r300screen->screen.get_name = r300_get_name;
 525     r300screen->screen.get_vendor = r300_get_vendor;
 526     r300screen->screen.get_param = r300_get_param;
 527     r300screen->screen.get_shader_param = r300_get_shader_param;
 528     r300screen->screen.get_paramf = r300_get_paramf;
 529     r300screen->screen.get_video_param = r300_get_video_param;
 530     r300screen->screen.is_format_supported = r300_is_format_supported;
 531     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 532     r300screen->screen.context_create = r300_create_context;
 533     r300screen->screen.fence_reference = r300_fence_reference;
 534     r300screen->screen.fence_signalled = r300_fence_signalled;
 535     r300screen->screen.fence_finish = r300_fence_finish;
 536
 537     r300_init_screen_resource_functions(r300screen);
 538
 539     util_format_s3tc_init();
 540
 541     return &r300screen->screen;
 542 }