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         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 144             return 0;
 145
 146         /* SWTCL-only features. */
 147         case PIPE_CAP_PRIMITIVE_RESTART:
 148             return !r300screen->caps.has_tcl;
 149
 150         /* Texturing. */
 151         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 152             return r300screen->caps.num_tex_units;
 153         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 154         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 155         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 156             /* 13 == 4096, 12 == 2048 */
 157             return is_r500 ? 13 : 12;
 158
 159         /* Render targets. */
 160         case PIPE_CAP_MAX_RENDER_TARGETS:
 161             return 4;
 162     }
 163     return 0;
 164 }
 165
 166 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 167 {
 168    struct r300_screen* r300screen = r300_screen(pscreen);
 169    boolean is_r400 = r300screen->caps.is_r400;
 170    boolean is_r500 = r300screen->caps.is_r500;
 171
 172    switch (shader) {
 173     case PIPE_SHADER_FRAGMENT:
 174         switch (param)
 175         {
 176         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 177             return is_r500 || is_r400 ? 512 : 96;
 178         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 179             return is_r500 || is_r400 ? 512 : 64;
 180         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 181             return is_r500 || is_r400 ? 512 : 32;
 182         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 183             return is_r500 ? 511 : 4;
 184         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 185             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 186             /* Fragment shader limits. */
 187         case PIPE_SHADER_CAP_MAX_INPUTS:
 188             /* 2 colors + 8 texcoords are always supported
 189              * (minus fog and wpos).
 190              *
 191              * R500 has the ability to turn 3rd and 4th color into
 192              * additional texcoords but there is no two-sided color
 193              * selection then. However the facing bit can be used instead. */
 194             return 10;
 195         case PIPE_SHADER_CAP_MAX_CONSTS:
 196             return is_r500 ? 256 : 32;
 197         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 198             return 1;
 199         case PIPE_SHADER_CAP_MAX_TEMPS:
 200             return is_r500 ? 128 : is_r400 ? 64 : 32;
 201         case PIPE_SHADER_CAP_MAX_PREDS:
 202             return is_r500 ? 1 : 0;
 203         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 204            return r300screen->caps.num_tex_units;
 205         case PIPE_SHADER_CAP_MAX_ADDRS:
 206         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 207         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 208         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 209         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 210         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 211         case PIPE_SHADER_CAP_SUBROUTINES:
 212         case PIPE_SHADER_CAP_INTEGERS:
 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             return 0;
 259         }
 260         break;
 261     }
 262     return 0;
 263 }
 264
 265 static float r300_get_paramf(struct pipe_screen* pscreen,
 266                              enum pipe_capf param)
 267 {
 268     struct r300_screen* r300screen = r300_screen(pscreen);
 269
 270     switch (param) {
 271         case PIPE_CAPF_MAX_LINE_WIDTH:
 272         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 273         case PIPE_CAPF_MAX_POINT_WIDTH:
 274         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 275             /* The maximum dimensions of the colorbuffer are our practical
 276              * rendering limits. 2048 pixels should be enough for anybody. */
 277             if (r300screen->caps.is_r500) {
 278                 return 4096.0f;
 279             } else if (r300screen->caps.is_r400) {
 280                 return 4021.0f;
 281             } else {
 282                 return 2560.0f;
 283             }
 284         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 285             return 16.0f;
 286         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 287             return 16.0f;
 288         case PIPE_CAPF_GUARD_BAND_LEFT:
 289         case PIPE_CAPF_GUARD_BAND_TOP:
 290         case PIPE_CAPF_GUARD_BAND_RIGHT:
 291         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 292             /* XXX I don't know what these should be but the least we can do is
 293              * silence the potential error message */
 294             return 0.0f;
 295         default:
 296             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 297                          param);
 298             return 0.0f;
 299     }
 300 }
 301
 302 static int r300_get_video_param(struct pipe_screen *screen,
 303                                 enum pipe_video_profile profile,
 304                                 enum pipe_video_cap param)
 305 {
 306    switch (param) {
 307       case PIPE_VIDEO_CAP_SUPPORTED:
 308          return vl_profile_supported(screen, profile);
 309       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 310          return 0;
 311       case PIPE_VIDEO_CAP_MAX_WIDTH:
 312       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 313          return vl_video_buffer_max_size(screen);
 314       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 315          return PIPE_FORMAT_NV12;
 316       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 317          return false;
 318       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 319          return false;
 320       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 321          return true;
 322       default:
 323          return 0;
 324    }
 325 }
 326
 327 static boolean r300_is_format_supported(struct pipe_screen* screen,
 328                                         enum pipe_format format,
 329                                         enum pipe_texture_target target,
 330                                         unsigned sample_count,
 331                                         unsigned usage)
 332 {
 333     uint32_t retval = 0;
 334     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 335     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 336     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 337     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 338                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 339                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 340                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 341     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 342                        format == PIPE_FORMAT_RGTC1_SNORM ||
 343                        format == PIPE_FORMAT_LATC1_UNORM ||
 344                        format == PIPE_FORMAT_LATC1_SNORM;
 345     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 346                        format == PIPE_FORMAT_RGTC2_SNORM ||
 347                        format == PIPE_FORMAT_LATC2_UNORM ||
 348                        format == PIPE_FORMAT_LATC2_SNORM;
 349     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 350                             format == PIPE_FORMAT_R16G16_FLOAT ||
 351                             format == PIPE_FORMAT_A16_FLOAT ||
 352                             format == PIPE_FORMAT_L16_FLOAT ||
 353                             format == PIPE_FORMAT_L16A16_FLOAT ||
 354                             format == PIPE_FORMAT_I16_FLOAT;
 355     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 356                             format == PIPE_FORMAT_R16G16_FLOAT ||
 357                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 358                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 359     boolean is_fixed = format == PIPE_FORMAT_R32_FIXED ||
 360                        format == PIPE_FORMAT_R32G32_FIXED ||
 361                        format == PIPE_FORMAT_R32G32B32_FIXED ||
 362                        format == PIPE_FORMAT_R32G32B32A32_FIXED;
 363
 364     if (!util_format_is_supported(format, usage))
 365        return FALSE;
 366
 367     /* Check multisampling support. */
 368     switch (sample_count) {
 369         case 0:
 370         case 1:
 371             break;
 372         case 2:
 373         case 3:
 374         case 4:
 375         case 6:
 376             return FALSE;
 377 #if 0
 378             if (usage != PIPE_BIND_RENDER_TARGET ||
 379                 !util_format_is_rgba8_variant(
 380                     util_format_description(format))) {
 381                 return FALSE;
 382             }
 383 #endif
 384             break;
 385         default:
 386             return FALSE;
 387     }
 388
 389     /* Check sampler format support. */
 390     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 391         /* ATI1N is r5xx-only. */
 392         (is_r500 || !is_ati1n) &&
 393         /* ATI2N is supported on r4xx-r5xx. */
 394         (is_r400 || is_r500 || !is_ati2n) &&
 395         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 396         (drm_2_8_0 || !is_x16f_xy16f) &&
 397         r300_is_sampler_format_supported(format)) {
 398         retval |= PIPE_BIND_SAMPLER_VIEW;
 399     }
 400
 401     /* Check colorbuffer format support. */
 402     if ((usage & (PIPE_BIND_RENDER_TARGET |
 403                   PIPE_BIND_DISPLAY_TARGET |
 404                   PIPE_BIND_SCANOUT |
 405                   PIPE_BIND_SHARED)) &&
 406         /* 2101010 cannot be rendered to on non-r5xx. */
 407         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 408         r300_is_colorbuffer_format_supported(format)) {
 409         retval |= usage &
 410             (PIPE_BIND_RENDER_TARGET |
 411              PIPE_BIND_DISPLAY_TARGET |
 412              PIPE_BIND_SCANOUT |
 413              PIPE_BIND_SHARED);
 414     }
 415
 416     /* Check depth-stencil format support. */
 417     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 418         r300_is_zs_format_supported(format)) {
 419         retval |= PIPE_BIND_DEPTH_STENCIL;
 420     }
 421
 422     /* Check vertex buffer format support. */
 423     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 424         /* Half float is supported on >= R400. */
 425         (is_r400 || is_r500 || !is_half_float) &&
 426         /* We have a fallback for FIXED. */
 427         (is_fixed || r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT)) {
 428         retval |= PIPE_BIND_VERTEX_BUFFER;
 429     }
 430
 431     /* Transfers are always supported. */
 432     if (usage & PIPE_BIND_TRANSFER_READ)
 433         retval |= PIPE_BIND_TRANSFER_READ;
 434     if (usage & PIPE_BIND_TRANSFER_WRITE)
 435         retval |= PIPE_BIND_TRANSFER_WRITE;
 436
 437     return retval == usage;
 438 }
 439
 440 static void r300_destroy_screen(struct pipe_screen* pscreen)
 441 {
 442     struct r300_screen* r300screen = r300_screen(pscreen);
 443     struct radeon_winsys *rws = radeon_winsys(pscreen);
 444
 445     util_slab_destroy(&r300screen->pool_buffers);
 446     pipe_mutex_destroy(r300screen->num_contexts_mutex);
 447
 448     if (rws)
 449       rws->destroy(rws);
 450
 451     FREE(r300screen);
 452 }
 453
 454 static void r300_fence_reference(struct pipe_screen *screen,
 455                                  struct pipe_fence_handle **ptr,
 456                                  struct pipe_fence_handle *fence)
 457 {
 458     pb_reference((struct pb_buffer**)ptr,
 459                              (struct pb_buffer*)fence);
 460 }
 461
 462 static boolean r300_fence_signalled(struct pipe_screen *screen,
 463                                     struct pipe_fence_handle *fence)
 464 {
 465     struct radeon_winsys *rws = r300_screen(screen)->rws;
 466     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 467
 468     return !rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE);
 469 }
 470
 471 static boolean r300_fence_finish(struct pipe_screen *screen,
 472                                  struct pipe_fence_handle *fence,
 473                                  uint64_t timeout)
 474 {
 475     struct radeon_winsys *rws = r300_screen(screen)->rws;
 476     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 477
 478     if (timeout != PIPE_TIMEOUT_INFINITE) {
 479         int64_t start_time = os_time_get();
 480
 481         /* Convert to microseconds. */
 482         timeout /= 1000;
 483
 484         /* Wait in a loop. */
 485         while (rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE)) {
 486             if (os_time_get() - start_time >= timeout) {
 487                 return FALSE;
 488             }
 489             os_time_sleep(10);
 490         }
 491         return TRUE;
 492     }
 493
 494     rws->buffer_wait(rfence, RADEON_USAGE_READWRITE);
 495     return TRUE;
 496 }
 497
 498 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 499 {
 500     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 501
 502     if (!r300screen) {
 503         FREE(r300screen);
 504         return NULL;
 505     }
 506
 507     rws->query_info(rws, &r300screen->info);
 508
 509     r300_init_debug(r300screen);
 510     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 511
 512     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 513         r300screen->caps.zmask_ram = 0;
 514     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 515         r300screen->caps.hiz_ram = 0;
 516
 517     if (r300screen->info.drm_minor < 8)
 518         r300screen->caps.has_us_format = FALSE;
 519
 520     pipe_mutex_init(r300screen->num_contexts_mutex);
 521
 522     util_slab_create(&r300screen->pool_buffers,
 523                      sizeof(struct r300_resource), 64,
 524                      UTIL_SLAB_SINGLETHREADED);
 525
 526     r300screen->rws = rws;
 527     r300screen->screen.destroy = r300_destroy_screen;
 528     r300screen->screen.get_name = r300_get_name;
 529     r300screen->screen.get_vendor = r300_get_vendor;
 530     r300screen->screen.get_param = r300_get_param;
 531     r300screen->screen.get_shader_param = r300_get_shader_param;
 532     r300screen->screen.get_paramf = r300_get_paramf;
 533     r300screen->screen.get_video_param = r300_get_video_param;
 534     r300screen->screen.is_format_supported = r300_is_format_supported;
 535     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 536     r300screen->screen.context_create = r300_create_context;
 537     r300screen->screen.fence_reference = r300_fence_reference;
 538     r300screen->screen.fence_signalled = r300_fence_signalled;
 539     r300screen->screen.fence_finish = r300_fence_finish;
 540
 541     r300_init_screen_resource_functions(r300screen);
 542
 543     util_format_s3tc_init();
 544
 545     return &r300screen->screen;
 546 }