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         case PIPE_CAP_USER_INDEX_BUFFERS:
 107         case PIPE_CAP_USER_CONSTANT_BUFFERS:
 108         case PIPE_CAP_DEPTH_CLIP_DISABLE: /* XXX implemented, but breaks Regnum Online */
 109             return 1;
 110
 111         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 112             return R300_BUFFER_ALIGNMENT;
 113
 114         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 115             return 16;
 116
 117         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 118             return 120;
 119
 120         /* r300 cannot do swizzling of compressed textures. Supported otherwise. */
 121         case PIPE_CAP_TEXTURE_SWIZZLE:
 122             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 123
 124         /* Supported on r500 only. */
 125         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 126         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 127         case PIPE_CAP_SM3:
 128             return is_r500 ? 1 : 0;
 129
 130         /* Unsupported features. */
 131         case PIPE_CAP_QUERY_TIME_ELAPSED:
 132         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 133         case PIPE_CAP_INDEP_BLEND_ENABLE:
 134         case PIPE_CAP_INDEP_BLEND_FUNC:
 135         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 136         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 137         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 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_SEAMLESS_CUBE_MAP:
 142         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 143         case PIPE_CAP_SCALED_RESOLVE:
 144         case PIPE_CAP_MIN_TEXEL_OFFSET:
 145         case PIPE_CAP_MAX_TEXEL_OFFSET:
 146         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 147         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 148         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 149         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 150         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 151         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 152         case PIPE_CAP_COMPUTE:
 153         case PIPE_CAP_START_INSTANCE:
 154         case PIPE_CAP_QUERY_TIMESTAMP:
 155         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 156         case PIPE_CAP_CUBE_MAP_ARRAY:
 157         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 158             return 0;
 159
 160         /* SWTCL-only features. */
 161         case PIPE_CAP_PRIMITIVE_RESTART:
 162         case PIPE_CAP_USER_VERTEX_BUFFERS:
 163             return !r300screen->caps.has_tcl;
 164
 165         /* HWTCL-only features / limitations. */
 166         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 167         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 168         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 169             return r300screen->caps.has_tcl;
 170
 171         /* Texturing. */
 172         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 173             return r300screen->caps.num_tex_units;
 174         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 175         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 176         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 177             /* 13 == 4096, 12 == 2048 */
 178             return is_r500 ? 13 : 12;
 179
 180         /* Render targets. */
 181         case PIPE_CAP_MAX_RENDER_TARGETS:
 182             return 4;
 183     }
 184     return 0;
 185 }
 186
 187 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 188 {
 189    struct r300_screen* r300screen = r300_screen(pscreen);
 190    boolean is_r400 = r300screen->caps.is_r400;
 191    boolean is_r500 = r300screen->caps.is_r500;
 192
 193    switch (shader) {
 194     case PIPE_SHADER_FRAGMENT:
 195         switch (param)
 196         {
 197         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 198             return is_r500 || is_r400 ? 512 : 96;
 199         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 200             return is_r500 || is_r400 ? 512 : 64;
 201         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 202             return is_r500 || is_r400 ? 512 : 32;
 203         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 204             return is_r500 ? 511 : 4;
 205         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 206             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 207             /* Fragment shader limits. */
 208         case PIPE_SHADER_CAP_MAX_INPUTS:
 209             /* 2 colors + 8 texcoords are always supported
 210              * (minus fog and wpos).
 211              *
 212              * R500 has the ability to turn 3rd and 4th color into
 213              * additional texcoords but there is no two-sided color
 214              * selection then. However the facing bit can be used instead. */
 215             return 10;
 216         case PIPE_SHADER_CAP_MAX_CONSTS:
 217             return is_r500 ? 256 : 32;
 218         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 219             return 1;
 220         case PIPE_SHADER_CAP_MAX_TEMPS:
 221             return is_r500 ? 128 : is_r400 ? 64 : 32;
 222         case PIPE_SHADER_CAP_MAX_PREDS:
 223             return is_r500 ? 1 : 0;
 224         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 225            return r300screen->caps.num_tex_units;
 226         case PIPE_SHADER_CAP_MAX_ADDRS:
 227         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 228         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 229         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 230         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 231         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 232         case PIPE_SHADER_CAP_SUBROUTINES:
 233         case PIPE_SHADER_CAP_INTEGERS:
 234             return 0;
 235         case PIPE_SHADER_CAP_PREFERRED_IR:
 236             return PIPE_SHADER_IR_TGSI;
 237         }
 238         break;
 239     case PIPE_SHADER_VERTEX:
 240         switch (param)
 241         {
 242         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 243         case PIPE_SHADER_CAP_SUBROUTINES:
 244             return 0;
 245         default:;
 246         }
 247
 248         if (!r300screen->caps.has_tcl) {
 249             return draw_get_shader_param(shader, param);
 250         }
 251
 252         switch (param)
 253         {
 254         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 255         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 256             return is_r500 ? 1024 : 256;
 257         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 258             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 259         case PIPE_SHADER_CAP_MAX_INPUTS:
 260             return 16;
 261         case PIPE_SHADER_CAP_MAX_CONSTS:
 262             return 256;
 263         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 264             return 1;
 265         case PIPE_SHADER_CAP_MAX_TEMPS:
 266             return 32;
 267         case PIPE_SHADER_CAP_MAX_ADDRS:
 268             return 1; /* XXX guessed */
 269         case PIPE_SHADER_CAP_MAX_PREDS:
 270             return is_r500 ? 4 : 0; /* XXX guessed. */
 271         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 272             return 1;
 273         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 274         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 275         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 276         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 277         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 278         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 279         case PIPE_SHADER_CAP_SUBROUTINES:
 280         case PIPE_SHADER_CAP_INTEGERS:
 281         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 282             return 0;
 283         case PIPE_SHADER_CAP_PREFERRED_IR:
 284             return PIPE_SHADER_IR_TGSI;
 285         }
 286         break;
 287     }
 288     return 0;
 289 }
 290
 291 static float r300_get_paramf(struct pipe_screen* pscreen,
 292                              enum pipe_capf param)
 293 {
 294     struct r300_screen* r300screen = r300_screen(pscreen);
 295
 296     switch (param) {
 297         case PIPE_CAPF_MAX_LINE_WIDTH:
 298         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 299         case PIPE_CAPF_MAX_POINT_WIDTH:
 300         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 301             /* The maximum dimensions of the colorbuffer are our practical
 302              * rendering limits. 2048 pixels should be enough for anybody. */
 303             if (r300screen->caps.is_r500) {
 304                 return 4096.0f;
 305             } else if (r300screen->caps.is_r400) {
 306                 return 4021.0f;
 307             } else {
 308                 return 2560.0f;
 309             }
 310         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 311             return 16.0f;
 312         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 313             return 16.0f;
 314         case PIPE_CAPF_GUARD_BAND_LEFT:
 315         case PIPE_CAPF_GUARD_BAND_TOP:
 316         case PIPE_CAPF_GUARD_BAND_RIGHT:
 317         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 318             /* XXX I don't know what these should be but the least we can do is
 319              * silence the potential error message */
 320             return 0.0f;
 321         default:
 322             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 323                          param);
 324             return 0.0f;
 325     }
 326 }
 327
 328 static int r300_get_video_param(struct pipe_screen *screen,
 329                                 enum pipe_video_profile profile,
 330                                 enum pipe_video_cap param)
 331 {
 332    switch (param) {
 333       case PIPE_VIDEO_CAP_SUPPORTED:
 334          return vl_profile_supported(screen, profile);
 335       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 336          return 0;
 337       case PIPE_VIDEO_CAP_MAX_WIDTH:
 338       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 339          return vl_video_buffer_max_size(screen);
 340       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 341          return PIPE_FORMAT_NV12;
 342       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 343          return false;
 344       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 345          return false;
 346       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 347          return true;
 348       default:
 349          return 0;
 350    }
 351 }
 352
 353 static boolean r300_is_format_supported(struct pipe_screen* screen,
 354                                         enum pipe_format format,
 355                                         enum pipe_texture_target target,
 356                                         unsigned sample_count,
 357                                         unsigned usage)
 358 {
 359     uint32_t retval = 0;
 360     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 361     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 362     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 363     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 364                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 365                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 366                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 367     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 368                        format == PIPE_FORMAT_RGTC1_SNORM ||
 369                        format == PIPE_FORMAT_LATC1_UNORM ||
 370                        format == PIPE_FORMAT_LATC1_SNORM;
 371     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 372                        format == PIPE_FORMAT_RGTC2_SNORM ||
 373                        format == PIPE_FORMAT_LATC2_UNORM ||
 374                        format == PIPE_FORMAT_LATC2_SNORM;
 375     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 376                             format == PIPE_FORMAT_R16G16_FLOAT ||
 377                             format == PIPE_FORMAT_A16_FLOAT ||
 378                             format == PIPE_FORMAT_L16_FLOAT ||
 379                             format == PIPE_FORMAT_L16A16_FLOAT ||
 380                             format == PIPE_FORMAT_I16_FLOAT;
 381     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 382                             format == PIPE_FORMAT_R16G16_FLOAT ||
 383                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 384                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 385
 386     if (!util_format_is_supported(format, usage))
 387        return FALSE;
 388
 389     /* Check multisampling support. */
 390     switch (sample_count) {
 391         case 0:
 392         case 1:
 393             break;
 394         case 2:
 395         case 3:
 396         case 4:
 397         case 6:
 398             return FALSE;
 399 #if 0
 400             if (usage != PIPE_BIND_RENDER_TARGET ||
 401                 !util_format_is_rgba8_variant(
 402                     util_format_description(format))) {
 403                 return FALSE;
 404             }
 405 #endif
 406             break;
 407         default:
 408             return FALSE;
 409     }
 410
 411     /* Check sampler format support. */
 412     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 413         /* ATI1N is r5xx-only. */
 414         (is_r500 || !is_ati1n) &&
 415         /* ATI2N is supported on r4xx-r5xx. */
 416         (is_r400 || is_r500 || !is_ati2n) &&
 417         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 418         (drm_2_8_0 || !is_x16f_xy16f) &&
 419         r300_is_sampler_format_supported(format)) {
 420         retval |= PIPE_BIND_SAMPLER_VIEW;
 421     }
 422
 423     /* Check colorbuffer format support. */
 424     if ((usage & (PIPE_BIND_RENDER_TARGET |
 425                   PIPE_BIND_DISPLAY_TARGET |
 426                   PIPE_BIND_SCANOUT |
 427                   PIPE_BIND_SHARED)) &&
 428         /* 2101010 cannot be rendered to on non-r5xx. */
 429         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 430         r300_is_colorbuffer_format_supported(format)) {
 431         retval |= usage &
 432             (PIPE_BIND_RENDER_TARGET |
 433              PIPE_BIND_DISPLAY_TARGET |
 434              PIPE_BIND_SCANOUT |
 435              PIPE_BIND_SHARED);
 436     }
 437
 438     /* Check depth-stencil format support. */
 439     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 440         r300_is_zs_format_supported(format)) {
 441         retval |= PIPE_BIND_DEPTH_STENCIL;
 442     }
 443
 444     /* Check vertex buffer format support. */
 445     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 446         if (r300_screen(screen)->caps.has_tcl) {
 447             /* Half float is supported on >= R400. */
 448             if ((is_r400 || is_r500 || !is_half_float) &&
 449                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 450                 retval |= PIPE_BIND_VERTEX_BUFFER;
 451             }
 452         } else {
 453             /* SW TCL */
 454             if (!util_format_is_pure_integer(format)) {
 455                 retval |= PIPE_BIND_VERTEX_BUFFER;
 456             }
 457         }
 458     }
 459
 460     /* Transfers are always supported. */
 461     if (usage & PIPE_BIND_TRANSFER_READ)
 462         retval |= PIPE_BIND_TRANSFER_READ;
 463     if (usage & PIPE_BIND_TRANSFER_WRITE)
 464         retval |= PIPE_BIND_TRANSFER_WRITE;
 465
 466     return retval == usage;
 467 }
 468
 469 static void r300_destroy_screen(struct pipe_screen* pscreen)
 470 {
 471     struct r300_screen* r300screen = r300_screen(pscreen);
 472     struct radeon_winsys *rws = radeon_winsys(pscreen);
 473
 474     if (rws)
 475       rws->destroy(rws);
 476
 477     FREE(r300screen);
 478 }
 479
 480 static void r300_fence_reference(struct pipe_screen *screen,
 481                                  struct pipe_fence_handle **ptr,
 482                                  struct pipe_fence_handle *fence)
 483 {
 484     pb_reference((struct pb_buffer**)ptr,
 485                              (struct pb_buffer*)fence);
 486 }
 487
 488 static boolean r300_fence_signalled(struct pipe_screen *screen,
 489                                     struct pipe_fence_handle *fence)
 490 {
 491     struct radeon_winsys *rws = r300_screen(screen)->rws;
 492     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 493
 494     return !rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE);
 495 }
 496
 497 static boolean r300_fence_finish(struct pipe_screen *screen,
 498                                  struct pipe_fence_handle *fence,
 499                                  uint64_t timeout)
 500 {
 501     struct radeon_winsys *rws = r300_screen(screen)->rws;
 502     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 503
 504     if (timeout != PIPE_TIMEOUT_INFINITE) {
 505         int64_t start_time = os_time_get();
 506
 507         /* Convert to microseconds. */
 508         timeout /= 1000;
 509
 510         /* Wait in a loop. */
 511         while (rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE)) {
 512             if (os_time_get() - start_time >= timeout) {
 513                 return FALSE;
 514             }
 515             os_time_sleep(10);
 516         }
 517         return TRUE;
 518     }
 519
 520     rws->buffer_wait(rfence, RADEON_USAGE_READWRITE);
 521     return TRUE;
 522 }
 523
 524 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 525 {
 526     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 527
 528     if (!r300screen) {
 529         FREE(r300screen);
 530         return NULL;
 531     }
 532
 533     rws->query_info(rws, &r300screen->info);
 534
 535     r300_init_debug(r300screen);
 536     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 537
 538     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 539         r300screen->caps.zmask_ram = 0;
 540     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 541         r300screen->caps.hiz_ram = 0;
 542
 543     if (r300screen->info.drm_minor < 8)
 544         r300screen->caps.has_us_format = FALSE;
 545
 546     r300screen->rws = rws;
 547     r300screen->screen.destroy = r300_destroy_screen;
 548     r300screen->screen.get_name = r300_get_name;
 549     r300screen->screen.get_vendor = r300_get_vendor;
 550     r300screen->screen.get_param = r300_get_param;
 551     r300screen->screen.get_shader_param = r300_get_shader_param;
 552     r300screen->screen.get_paramf = r300_get_paramf;
 553     r300screen->screen.get_video_param = r300_get_video_param;
 554     r300screen->screen.is_format_supported = r300_is_format_supported;
 555     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 556     r300screen->screen.context_create = r300_create_context;
 557     r300screen->screen.fence_reference = r300_fence_reference;
 558     r300screen->screen.fence_signalled = r300_fence_signalled;
 559     r300screen->screen.fence_finish = r300_fence_finish;
 560
 561     r300_init_screen_resource_functions(r300screen);
 562
 563     util_format_s3tc_init();
 564
 565     return &r300screen->screen;
 566 }