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         default:
 153             debug_printf("r300: Warning: Unknown CAP %d in get_param.\n",
 154                          param);
 155             return 0;
 156     }
 157 }
 158
 159 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 160 {
 161    struct r300_screen* r300screen = r300_screen(pscreen);
 162    boolean is_r400 = r300screen->caps.is_r400;
 163    boolean is_r500 = r300screen->caps.is_r500;
 164
 165    switch (shader)
 166     {
 167     case PIPE_SHADER_FRAGMENT:
 168         switch (param)
 169         {
 170         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 171             return is_r500 || is_r400 ? 512 : 96;
 172         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 173             return is_r500 || is_r400 ? 512 : 64;
 174         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 175             return is_r500 || is_r400 ? 512 : 32;
 176         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 177             return is_r500 ? 511 : 4;
 178         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 179             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 180             /* Fragment shader limits. */
 181         case PIPE_SHADER_CAP_MAX_INPUTS:
 182             /* 2 colors + 8 texcoords are always supported
 183              * (minus fog and wpos).
 184              *
 185              * R500 has the ability to turn 3rd and 4th color into
 186              * additional texcoords but there is no two-sided color
 187              * selection then. However the facing bit can be used instead. */
 188             return 10;
 189         case PIPE_SHADER_CAP_MAX_CONSTS:
 190             return is_r500 ? 256 : 32;
 191         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 192             return 1;
 193         case PIPE_SHADER_CAP_MAX_TEMPS:
 194             return is_r500 ? 128 : is_r400 ? 64 : 32;
 195         case PIPE_SHADER_CAP_MAX_ADDRS:
 196             return 0;
 197         case PIPE_SHADER_CAP_MAX_PREDS:
 198             return is_r500 ? 1 : 0;
 199         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 200         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 201         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 202         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 203         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 204         case PIPE_SHADER_CAP_SUBROUTINES:
 205         case PIPE_SHADER_CAP_INTEGERS:
 206             return 0;
 207         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 208            return r300screen->caps.num_tex_units;
 209         }
 210         break;
 211     case PIPE_SHADER_VERTEX:
 212         switch (param)
 213         {
 214         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 215             return 0;
 216         default:;
 217         }
 218
 219         if (!r300screen->caps.has_tcl) {
 220             return draw_get_shader_param(shader, param);
 221         }
 222
 223         switch (param)
 224         {
 225         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 226         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 227             return is_r500 ? 1024 : 256;
 228         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 229         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 230             return 0;
 231         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 232             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 233         case PIPE_SHADER_CAP_MAX_INPUTS:
 234             return 16;
 235         case PIPE_SHADER_CAP_MAX_CONSTS:
 236             return 256;
 237         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 238             return 1;
 239         case PIPE_SHADER_CAP_MAX_TEMPS:
 240             return 32;
 241         case PIPE_SHADER_CAP_MAX_ADDRS:
 242             return 1; /* XXX guessed */
 243         case PIPE_SHADER_CAP_MAX_PREDS:
 244             return is_r500 ? 4 : 0; /* XXX guessed. */
 245         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 246             return 1;
 247         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 248         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 249         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 250         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 251         case PIPE_SHADER_CAP_SUBROUTINES:
 252         case PIPE_SHADER_CAP_INTEGERS:
 253             return 0;
 254         default:;
 255         }
 256         break;
 257     }
 258     return 0;
 259 }
 260
 261 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 262 {
 263     struct r300_screen* r300screen = r300_screen(pscreen);
 264
 265     switch (param) {
 266         case PIPE_CAP_MAX_LINE_WIDTH:
 267         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 268         case PIPE_CAP_MAX_POINT_WIDTH:
 269         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 270             /* The maximum dimensions of the colorbuffer are our practical
 271              * rendering limits. 2048 pixels should be enough for anybody. */
 272             if (r300screen->caps.is_r500) {
 273                 return 4096.0f;
 274             } else if (r300screen->caps.is_r400) {
 275                 return 4021.0f;
 276             } else {
 277                 return 2560.0f;
 278             }
 279         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 280             return 16.0f;
 281         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 282             return 16.0f;
 283         case PIPE_CAP_GUARD_BAND_LEFT:
 284         case PIPE_CAP_GUARD_BAND_TOP:
 285         case PIPE_CAP_GUARD_BAND_RIGHT:
 286         case PIPE_CAP_GUARD_BAND_BOTTOM:
 287             /* XXX I don't know what these should be but the least we can do is
 288              * silence the potential error message */
 289             return 0.0f;
 290         default:
 291             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 292                          param);
 293             return 0.0f;
 294     }
 295 }
 296
 297 static int r300_get_video_param(struct pipe_screen *screen,
 298                                 enum pipe_video_profile profile,
 299                                 enum pipe_video_cap param)
 300 {
 301    switch (param) {
 302       case PIPE_VIDEO_CAP_SUPPORTED:
 303          return vl_profile_supported(screen, profile);
 304       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 305          return 0;
 306       case PIPE_VIDEO_CAP_MAX_WIDTH:
 307       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 308          return vl_video_buffer_max_size(screen);
 309       case PIPE_VIDEO_CAP_NUM_BUFFERS_DESIRED:
 310          return vl_num_buffers_desired(screen, profile);
 311       default:
 312          return 0;
 313    }
 314 }
 315
 316 static boolean r300_is_format_supported(struct pipe_screen* screen,
 317                                         enum pipe_format format,
 318                                         enum pipe_texture_target target,
 319                                         unsigned sample_count,
 320                                         unsigned usage)
 321 {
 322     uint32_t retval = 0;
 323     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 324     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 325     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 326     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 327                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 328                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 329                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 330     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 331                        format == PIPE_FORMAT_RGTC1_SNORM ||
 332                        format == PIPE_FORMAT_LATC1_UNORM ||
 333                        format == PIPE_FORMAT_LATC1_SNORM;
 334     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 335                        format == PIPE_FORMAT_RGTC2_SNORM ||
 336                        format == PIPE_FORMAT_LATC2_UNORM ||
 337                        format == PIPE_FORMAT_LATC2_SNORM;
 338     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 339                             format == PIPE_FORMAT_R16G16_FLOAT ||
 340                             format == PIPE_FORMAT_A16_FLOAT ||
 341                             format == PIPE_FORMAT_L16_FLOAT ||
 342                             format == PIPE_FORMAT_L16A16_FLOAT ||
 343                             format == PIPE_FORMAT_I16_FLOAT;
 344     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 345                             format == PIPE_FORMAT_R16G16_FLOAT ||
 346                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 347                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 348     boolean is_fixed = format == PIPE_FORMAT_R32_FIXED ||
 349                        format == PIPE_FORMAT_R32G32_FIXED ||
 350                        format == PIPE_FORMAT_R32G32B32_FIXED ||
 351                        format == PIPE_FORMAT_R32G32B32A32_FIXED;
 352
 353     if (!util_format_is_supported(format, usage))
 354        return FALSE;
 355
 356     /* Check multisampling support. */
 357     switch (sample_count) {
 358         case 0:
 359         case 1:
 360             break;
 361         case 2:
 362         case 3:
 363         case 4:
 364         case 6:
 365             return FALSE;
 366 #if 0
 367             if (usage != PIPE_BIND_RENDER_TARGET ||
 368                 !util_format_is_rgba8_variant(
 369                     util_format_description(format))) {
 370                 return FALSE;
 371             }
 372 #endif
 373             break;
 374         default:
 375             return FALSE;
 376     }
 377
 378     /* Check sampler format support. */
 379     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 380         /* ATI1N is r5xx-only. */
 381         (is_r500 || !is_ati1n) &&
 382         /* ATI2N is supported on r4xx-r5xx. */
 383         (is_r400 || is_r500 || !is_ati2n) &&
 384         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 385         (drm_2_8_0 || !is_x16f_xy16f) &&
 386         r300_is_sampler_format_supported(format)) {
 387         retval |= PIPE_BIND_SAMPLER_VIEW;
 388     }
 389
 390     /* Check colorbuffer format support. */
 391     if ((usage & (PIPE_BIND_RENDER_TARGET |
 392                   PIPE_BIND_DISPLAY_TARGET |
 393                   PIPE_BIND_SCANOUT |
 394                   PIPE_BIND_SHARED)) &&
 395         /* 2101010 cannot be rendered to on non-r5xx. */
 396         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 397         r300_is_colorbuffer_format_supported(format)) {
 398         retval |= usage &
 399             (PIPE_BIND_RENDER_TARGET |
 400              PIPE_BIND_DISPLAY_TARGET |
 401              PIPE_BIND_SCANOUT |
 402              PIPE_BIND_SHARED);
 403     }
 404
 405     /* Check depth-stencil format support. */
 406     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 407         r300_is_zs_format_supported(format)) {
 408         retval |= PIPE_BIND_DEPTH_STENCIL;
 409     }
 410
 411     /* Check vertex buffer format support. */
 412     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 413         /* Half float is supported on >= R400. */
 414         (is_r400 || is_r500 || !is_half_float) &&
 415         /* We have a fallback for FIXED. */
 416         (is_fixed || r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT)) {
 417         retval |= PIPE_BIND_VERTEX_BUFFER;
 418     }
 419
 420     /* Transfers are always supported. */
 421     if (usage & PIPE_BIND_TRANSFER_READ)
 422         retval |= PIPE_BIND_TRANSFER_READ;
 423     if (usage & PIPE_BIND_TRANSFER_WRITE)
 424         retval |= PIPE_BIND_TRANSFER_WRITE;
 425
 426     return retval == usage;
 427 }
 428
 429 static void r300_destroy_screen(struct pipe_screen* pscreen)
 430 {
 431     struct r300_screen* r300screen = r300_screen(pscreen);
 432     struct radeon_winsys *rws = radeon_winsys(pscreen);
 433
 434     util_slab_destroy(&r300screen->pool_buffers);
 435     pipe_mutex_destroy(r300screen->num_contexts_mutex);
 436
 437     if (rws)
 438       rws->destroy(rws);
 439
 440     FREE(r300screen);
 441 }
 442
 443 static void r300_fence_reference(struct pipe_screen *screen,
 444                                  struct pipe_fence_handle **ptr,
 445                                  struct pipe_fence_handle *fence)
 446 {
 447     pb_reference((struct pb_buffer**)ptr,
 448                              (struct pb_buffer*)fence);
 449 }
 450
 451 static boolean r300_fence_signalled(struct pipe_screen *screen,
 452                                     struct pipe_fence_handle *fence)
 453 {
 454     struct radeon_winsys *rws = r300_screen(screen)->rws;
 455     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 456
 457     return !rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE);
 458 }
 459
 460 static boolean r300_fence_finish(struct pipe_screen *screen,
 461                                  struct pipe_fence_handle *fence,
 462                                  uint64_t timeout)
 463 {
 464     struct radeon_winsys *rws = r300_screen(screen)->rws;
 465     struct pb_buffer *rfence = (struct pb_buffer*)fence;
 466
 467     if (timeout != PIPE_TIMEOUT_INFINITE) {
 468         int64_t start_time = os_time_get();
 469
 470         /* Convert to microseconds. */
 471         timeout /= 1000;
 472
 473         /* Wait in a loop. */
 474         while (rws->buffer_is_busy(rfence, RADEON_USAGE_READWRITE)) {
 475             if (os_time_get() - start_time >= timeout) {
 476                 return FALSE;
 477             }
 478             os_time_sleep(10);
 479         }
 480         return TRUE;
 481     }
 482
 483     rws->buffer_wait(rfence, RADEON_USAGE_READWRITE);
 484     return TRUE;
 485 }
 486
 487 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 488 {
 489     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 490
 491     if (!r300screen) {
 492         FREE(r300screen);
 493         return NULL;
 494     }
 495
 496     rws->query_info(rws, &r300screen->info);
 497
 498     r300_init_debug(r300screen);
 499     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 500
 501     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 502         r300screen->caps.zmask_ram = 0;
 503     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 504         r300screen->caps.hiz_ram = 0;
 505
 506     if (r300screen->info.drm_minor < 8)
 507         r300screen->caps.has_us_format = FALSE;
 508
 509     pipe_mutex_init(r300screen->num_contexts_mutex);
 510
 511     util_slab_create(&r300screen->pool_buffers,
 512                      sizeof(struct r300_resource), 64,
 513                      UTIL_SLAB_SINGLETHREADED);
 514
 515     r300screen->rws = rws;
 516     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 517     r300screen->screen.destroy = r300_destroy_screen;
 518     r300screen->screen.get_name = r300_get_name;
 519     r300screen->screen.get_vendor = r300_get_vendor;
 520     r300screen->screen.get_param = r300_get_param;
 521     r300screen->screen.get_shader_param = r300_get_shader_param;
 522     r300screen->screen.get_paramf = r300_get_paramf;
 523     r300screen->screen.get_video_param = r300_get_video_param;
 524     r300screen->screen.is_format_supported = r300_is_format_supported;
 525     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 526     r300screen->screen.context_create = r300_create_context;
 527     r300screen->screen.fence_reference = r300_fence_reference;
 528     r300screen->screen.fence_signalled = r300_fence_signalled;
 529     r300screen->screen.fence_finish = r300_fence_finish;
 530
 531     r300_init_screen_resource_functions(r300screen);
 532
 533     util_format_s3tc_init();
 534
 535     return &r300screen->screen;
 536 }