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